Merge branch '2.1.x' into 2.1.x

README.md

@@ -30,7 +30,7 @@ DEMO代码地址：[https://github.com/alibaba/easyexcel/blob/master/src/test/ja
     /**
      * 最简单的读
      * <p>1. 创建excel对应的实体对象 参照{@link DemoData}
-     * <p>2. 由于默认异步读取excel，所以需要创建excel一行一行的回调监听器，参照{@link DemoDataListener}
+     * <p>2. 由于默认一行行的读取excel，所以需要创建excel一行一行的回调监听器，参照{@link DemoDataListener}
      * <p>3. 直接读即可
      */
     @Test
@@ -62,29 +62,32 @@ DEMO代码地址：[https://github.com/alibaba/easyexcel/blob/master/src/test/ja
 DEMO代码地址：[https://github.com/alibaba/easyexcel/blob/master/src/test/java/com/alibaba/easyexcel/test/demo/web/WebTest.java](/src/test/java/com/alibaba/easyexcel/test/demo/web/WebTest.java)
 ```java
  /**
-     * 文件下载
+     * 文件下载（失败了会返回一个有部分数据的Excel）
      * <p>1. 创建excel对应的实体对象 参照{@link DownloadData}
      * <p>2. 设置返回的 参数
      * <p>3. 直接写，这里注意，finish的时候会自动关闭OutputStream,当然你外面再关闭流问题不大
      */
     @GetMapping("download")
     public void download(HttpServletResponse response) throws IOException {
+        // 这里注意 有同学反应使用swagger 会导致各种问题，请直接用浏览器或者用postman
         response.setContentType("application/vnd.ms-excel");
         response.setCharacterEncoding("utf-8");
-        response.setHeader("Content-disposition", "attachment;filename=demo.xlsx");
+        // 这里URLEncoder.encode可以防止中文乱码 当然和easyexcel没有关系
+        String fileName = URLEncoder.encode("测试", "UTF-8");
+        response.setHeader("Content-disposition", "attachment;filename=" + fileName + ".xlsx");
         EasyExcel.write(response.getOutputStream(), DownloadData.class).sheet("模板").doWrite(data());
     }
 
     /**
      * 文件上传
      * <p>1. 创建excel对应的实体对象 参照{@link UploadData}
-     * <p>2. 由于默认异步读取excel，所以需要创建excel一行一行的回调监听器，参照{@link UploadDataListener}
+     * <p>2. 由于默认一行行的读取excel，所以需要创建excel一行一行的回调监听器，参照{@link UploadDataListener}
      * <p>3. 直接读即可
      */
     @PostMapping("upload")
     @ResponseBody
     public String upload(MultipartFile file) throws IOException {
-        EasyExcel.read(file.getInputStream(), UploadData.class, new UploadDataListener()).sheet().doRead();
+        EasyExcel.read(file.getInputStream(), UploadData.class, new UploadDataListener(uploadDAO)).sheet().doRead();
         return "success";
     }
 ```

pom.xml

@@ -4,7 +4,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.alibaba</groupId>
     <artifactId>easyexcel</artifactId>
-    <version>2.1.0-beta1</version>
+    <version>2.1.4</version>
     <packaging>jar</packaging>
     <name>easyexcel</name>
 
@@ -17,7 +17,7 @@
     <properties>
         <!--<gpg.skip>true</gpg.skip>-->
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <jdk.version>1.7</jdk.version>
+        <jdk.version>1.6</jdk.version>
     </properties>
 
     <scm>
@@ -66,6 +66,11 @@
             <artifactId>poi-ooxml</artifactId>
             <version>3.17</version>
         </dependency>
+        <dependency>
+            <groupId>org.apache.poi</groupId>
+            <artifactId>poi-ooxml-schemas</artifactId>
+            <version>3.17</version>
+        </dependency>
         <dependency>
             <groupId>cglib</groupId>
             <artifactId>cglib</artifactId>
@@ -79,7 +84,7 @@
         <dependency>
             <groupId>org.ehcache</groupId>
             <artifactId>ehcache</artifactId>
-            <version>3.7.1</version>
+            <version>3.4.0</version>
         </dependency>
         <!--test-->
         <dependency>
@@ -132,11 +137,11 @@
 
     <build>
         <plugins>
-            <!-- 用pmd校验阿里的p3c规范 -->
+            <!-- code style -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-pmd-plugin</artifactId>
-                <version>3.12.0</version>
+                <version>3.8</version>
                 <configuration>
                     <printFailingErrors>true</printFailingErrors>
                     <verbose>true</verbose>
@@ -157,7 +162,6 @@
                     </excludes>
                 </configuration>
                 <executions>
-                    <!-- 绑定pmd:check到verify生命周期 -->
                     <execution>
                         <id>pmd-check-verify</id>
                         <phase>validate</phase>
@@ -170,7 +174,7 @@
                     <dependency>
                         <groupId>com.alibaba.p3c</groupId>
                         <artifactId>p3c-pmd</artifactId>
-                        <version>2.0.0</version>
+                        <version>1.3.6</version>
                     </dependency>
                 </dependencies>
             </plugin>

src/main/java/com/alibaba/excel/ExcelReader.java

@@ -14,7 +14,6 @@ import com.alibaba.excel.analysis.ExcelReadExecutor;
 import com.alibaba.excel.cache.MapCache;
 import com.alibaba.excel.context.AnalysisContext;
 import com.alibaba.excel.event.AnalysisEventListener;
-import com.alibaba.excel.exception.ExcelAnalysisException;
 import com.alibaba.excel.metadata.Sheet;
 import com.alibaba.excel.parameter.AnalysisParam;
 import com.alibaba.excel.read.listener.ReadListener;
@@ -35,8 +34,6 @@ public class ExcelReader {
      */
     private ExcelAnalyser excelAnalyser;
 
-    private boolean finished = false;
-
     /**
      * Create new reader
      *
@@ -160,7 +157,6 @@ public class ExcelReader {
      * Parse all sheet content by default
      */
     public void readAll() {
-        checkFinished();
         excelAnalyser.analysis(null, Boolean.TRUE);
     }
 
@@ -181,7 +177,6 @@ public class ExcelReader {
      * @return
      */
     public ExcelReader read(List<ReadSheet> readSheetList) {
-        checkFinished();
         excelAnalyser.analysis(readSheetList, Boolean.FALSE);
         return this;
     }
@@ -231,7 +226,6 @@ public class ExcelReader {
      * @return
      */
     public AnalysisContext analysisContext() {
-        checkFinished();
         return excelAnalyser.analysisContext();
     }
 
@@ -241,7 +235,6 @@ public class ExcelReader {
      * @return
      */
     public ExcelReadExecutor excelExecutor() {
-        checkFinished();
         return excelAnalyser.excelExecutor();
     }
 
@@ -281,10 +274,6 @@ public class ExcelReader {
      * Complete the entire read file.Release the cache and close stream.
      */
     public void finish() {
-        if (finished) {
-            return;
-        }
-        finished = true;
         excelAnalyser.finish();
     }
 
@@ -294,19 +283,11 @@ public class ExcelReader {
      */
     @Override
     protected void finalize() {
-        if (finished) {
-            return;
-        }
         try {
-            excelAnalyser.finish();
+            finish();
         } catch (Throwable e) {
             LOGGER.warn("Destroy object failed", e);
         }
     }
 
-    private void checkFinished() {
-        if (finished) {
-            throw new ExcelAnalysisException("Can not use a finished reader.");
-        }
-    }
 }

src/main/java/com/alibaba/excel/ExcelWriter.java

@@ -5,6 +5,9 @@ import java.io.OutputStream;
 import java.util.ArrayList;
 import java.util.List;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import com.alibaba.excel.context.WriteContext;
 import com.alibaba.excel.metadata.Sheet;
 import com.alibaba.excel.metadata.Table;
@@ -31,6 +34,8 @@ import com.alibaba.excel.write.metadata.fill.FillConfig;
  * @author jipengfei
  */
 public class ExcelWriter {
+    private static final Logger LOGGER = LoggerFactory.getLogger(ExcelWriter.class);
+
     private ExcelBuilder excelBuilder;
 
     /**
@@ -320,7 +325,20 @@ public class ExcelWriter {
      * Close IO
      */
     public void finish() {
-        excelBuilder.finish();
+        excelBuilder.finish(false);
+    }
+
+    /**
+     * Prevents calls to {@link #finish} from freeing the cache
+     *
+     */
+    @Override
+    protected void finalize() {
+        try {
+            finish();
+        } catch (Throwable e) {
+            LOGGER.warn("Destroy object failed", e);
+        }
     }
 
     /**

src/main/java/com/alibaba/excel/analysis/ExcelAnalyserImpl.java

@@ -1,13 +1,10 @@
 package com.alibaba.excel.analysis;
 
-import java.io.FileInputStream;
 import java.io.InputStream;
 import java.util.List;
 
 import org.apache.poi.hssf.record.crypto.Biff8EncryptionKey;
-import org.apache.poi.hssf.usermodel.HSSFWorkbook;
 import org.apache.poi.poifs.crypt.Decryptor;
-import org.apache.poi.poifs.crypt.EncryptionInfo;
 import org.apache.poi.poifs.filesystem.DocumentFactoryHelper;
 import org.apache.poi.poifs.filesystem.POIFSFileSystem;
 import org.apache.poi.util.IOUtils;
@@ -25,7 +22,9 @@ import com.alibaba.excel.read.metadata.ReadWorkbook;
 import com.alibaba.excel.read.metadata.holder.ReadWorkbookHolder;
 import com.alibaba.excel.support.ExcelTypeEnum;
 import com.alibaba.excel.util.CollectionUtils;
+import com.alibaba.excel.util.DateUtils;
 import com.alibaba.excel.util.FileUtils;
+import com.alibaba.excel.util.NumberDataFormatterUtils;
 import com.alibaba.excel.util.StringUtils;
 
 /**
@@ -37,6 +36,10 @@ public class ExcelAnalyserImpl implements ExcelAnalyser {
     private AnalysisContext analysisContext;
 
     private ExcelReadExecutor excelReadExecutor;
+    /**
+     * Prevent multiple shutdowns
+     */
+    private boolean finished = false;
 
     public ExcelAnalyserImpl(ReadWorkbook readWorkbook) {
         try {
@@ -124,31 +127,37 @@ public class ExcelAnalyserImpl implements ExcelAnalyser {
 
     @Override
     public void finish() {
+        if (finished) {
+            return;
+        }
+        finished = true;
         if (analysisContext == null || analysisContext.readWorkbookHolder() == null) {
             return;
         }
         ReadWorkbookHolder readWorkbookHolder = analysisContext.readWorkbookHolder();
 
+        Throwable throwable = null;
+
         try {
             if (readWorkbookHolder.getReadCache() != null) {
                 readWorkbookHolder.getReadCache().destroy();
             }
         } catch (Throwable t) {
-            throwCanNotCloseIo(t);
+            throwable = t;
         }
         try {
             if (readWorkbookHolder.getOpcPackage() != null) {
                 readWorkbookHolder.getOpcPackage().revert();
             }
         } catch (Throwable t) {
-            throwCanNotCloseIo(t);
+            throwable = t;
         }
         try {
             if (readWorkbookHolder.getPoifsFileSystem() != null) {
                 readWorkbookHolder.getPoifsFileSystem().close();
             }
         } catch (Throwable t) {
-            throwCanNotCloseIo(t);
+            throwable = t;
         }
         try {
             if (analysisContext.readWorkbookHolder().getAutoCloseStream()
@@ -156,17 +165,28 @@ public class ExcelAnalyserImpl implements ExcelAnalyser {
                 readWorkbookHolder.getInputStream().close();
             }
         } catch (Throwable t) {
-            throwCanNotCloseIo(t);
+            throwable = t;
         }
         try {
             if (readWorkbookHolder.getTempFile() != null) {
                 FileUtils.delete(readWorkbookHolder.getTempFile());
             }
         } catch (Throwable t) {
-            throwCanNotCloseIo(t);
+            throwable = t;
         }
 
         clearEncrypt03();
+
+        removeThreadLocalCache();
+
+        if (throwable != null) {
+            throw new ExcelAnalysisException("Can not close IO.", throwable);
+        }
+    }
+
+    private void removeThreadLocalCache() {
+        NumberDataFormatterUtils.removeThreadLocalCache();
+        DateUtils.removeThreadLocalCache();
     }
 
     private void clearEncrypt03() {
@@ -177,10 +197,6 @@ public class ExcelAnalyserImpl implements ExcelAnalyser {
         Biff8EncryptionKey.setCurrentUserPassword(null);
     }
 
-    private void throwCanNotCloseIo(Throwable t) {
-        throw new ExcelAnalysisException("Can not close IO", t);
-    }
-
     @Override
     public ExcelReadExecutor excelExecutor() {
         return excelReadExecutor;

src/main/java/com/alibaba/excel/analysis/v03/XlsSaxAnalyser.java

@@ -4,9 +4,9 @@ import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
+import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
-import java.util.TreeMap;
 
 import com.alibaba.excel.util.StringUtils;
 import org.apache.poi.hssf.eventusermodel.EventWorkbookBuilder;
@@ -33,6 +33,7 @@ import com.alibaba.excel.analysis.ExcelReadExecutor;
 import com.alibaba.excel.analysis.v03.handlers.BlankOrErrorRecordHandler;
 import com.alibaba.excel.analysis.v03.handlers.BofRecordHandler;
 import com.alibaba.excel.analysis.v03.handlers.FormulaRecordHandler;
+import com.alibaba.excel.analysis.v03.handlers.IndexRecordHandler;
 import com.alibaba.excel.analysis.v03.handlers.LabelRecordHandler;
 import com.alibaba.excel.analysis.v03.handlers.MissingCellDummyRecordHandler;
 import com.alibaba.excel.analysis.v03.handlers.NoteRecordHandler;
@@ -86,7 +87,7 @@ public class XlsSaxAnalyser implements HSSFListener, ExcelReadExecutor {
 
     public XlsSaxAnalyser(AnalysisContext context, POIFSFileSystem poifsFileSystem) {
         this.analysisContext = context;
-        this.records = new TreeMap<Integer, CellData>();
+        this.records = new LinkedHashMap<Integer, CellData>();
         this.poifsFileSystem = poifsFileSystem;
         try {
             this.poiWorkbook = WorkbookFactory.create(poifsFileSystem);
@@ -134,7 +135,7 @@ public class XlsSaxAnalyser implements HSSFListener, ExcelReadExecutor {
     private void init() {
         lastRowNumber = 0;
         lastColumnNumber = 0;
-        records = new TreeMap<Integer, CellData>();
+        records = new LinkedHashMap<Integer, CellData>();
         buildXlsRecordHandlers();
     }
 
@@ -227,7 +228,7 @@ public class XlsSaxAnalyser implements HSSFListener, ExcelReadExecutor {
             analysisContext.readRowHolder().setRowComments(rowComments);
         }
         analysisContext.readSheetHolder().notifyEndOneRow(new EachRowAnalysisFinishEvent(records), analysisContext);
-        records.clear();
+        records = new HashMap<Integer, CellData>();
         lastColumnNumber = -1;
     }
 
@@ -244,10 +245,11 @@ public class XlsSaxAnalyser implements HSSFListener, ExcelReadExecutor {
             recordHandlers.add(new FormulaRecordHandler(stubWorkbook, formatListener));
             recordHandlers.add(new LabelRecordHandler());
             recordHandlers.add(new NoteRecordHandler());
-            recordHandlers.add(new NumberRecordHandler(formatListener));
+            recordHandlers.add(new NumberRecordHandler(analysisContext, formatListener));
             recordHandlers.add(new RkRecordHandler());
             recordHandlers.add(new SstRecordHandler());
             recordHandlers.add(new MissingCellDummyRecordHandler());
+            recordHandlers.add(new IndexRecordHandler(analysisContext));
             Collections.sort(recordHandlers);
         }
 

src/main/java/com/alibaba/excel/analysis/v03/handlers/BofRecordHandler.java

@@ -73,7 +73,7 @@ public class BofRecordHandler extends AbstractXlsRecordHandler {
                     readSheet = SheetUtils.match(readSheet, readSheetList, readAll,
                         context.readWorkbookHolder().getGlobalConfiguration());
                     if (readSheet != null) {
-                        if (readSheet.getSheetNo() != 0) {
+                        if (readSheet.getSheetNo() != 0 && context.readSheetHolder() != null) {
                             // Prompt for the end of the previous form read
                             context.readSheetHolder().notifyAfterAllAnalysed(context);
                         }

src/main/java/com/alibaba/excel/analysis/v03/handlers/IndexRecordHandler.java

@@ -0,0 +1,42 @@
+package com.alibaba.excel.analysis.v03.handlers;
+
+import org.apache.poi.hssf.record.IndexRecord;
+import org.apache.poi.hssf.record.Record;
+
+import com.alibaba.excel.analysis.v03.AbstractXlsRecordHandler;
+import com.alibaba.excel.context.AnalysisContext;
+
+/**
+ * Record handler
+ *
+ * @author Jiaju Zhuang
+ */
+public class IndexRecordHandler extends AbstractXlsRecordHandler {
+
+    private AnalysisContext context;
+
+    public IndexRecordHandler(AnalysisContext context) {
+        this.context = context;
+    }
+
+    @Override
+    public boolean support(Record record) {
+        return record instanceof IndexRecord;
+    }
+
+    @Override
+    public void init() {}
+
+    @Override
+    public void processRecord(Record record) {
+        if (context.readSheetHolder() == null) {
+            return;
+        }
+        context.readSheetHolder().setApproximateTotalRowNumber(((IndexRecord)record).getLastRowAdd1());
+    }
+
+    @Override
+    public int getOrder() {
+        return 1;
+    }
+}

src/main/java/com/alibaba/excel/analysis/v03/handlers/NumberRecordHandler.java

@@ -7,6 +7,8 @@ import org.apache.poi.hssf.record.NumberRecord;
 import org.apache.poi.hssf.record.Record;
 
 import com.alibaba.excel.analysis.v03.AbstractXlsRecordHandler;
+import com.alibaba.excel.constant.BuiltinFormats;
+import com.alibaba.excel.context.AnalysisContext;
 import com.alibaba.excel.metadata.CellData;
 
 /**
@@ -17,7 +19,10 @@ import com.alibaba.excel.metadata.CellData;
 public class NumberRecordHandler extends AbstractXlsRecordHandler {
     private FormatTrackingHSSFListener formatListener;
 
-    public NumberRecordHandler(FormatTrackingHSSFListener formatListener) {
+    private AnalysisContext context;
+
+    public NumberRecordHandler(AnalysisContext context, FormatTrackingHSSFListener formatListener) {
+        this.context = context;
         this.formatListener = formatListener;
     }
 
@@ -32,8 +37,10 @@ public class NumberRecordHandler extends AbstractXlsRecordHandler {
         this.row = numrec.getRow();
         this.column = numrec.getColumn();
         this.cellData = new CellData(BigDecimal.valueOf(numrec.getValue()));
-        this.cellData.setDataFormat(formatListener.getFormatIndex(numrec));
-        this.cellData.setDataFormatString(formatListener.getFormatString(numrec));
+        int dataFormat = formatListener.getFormatIndex(numrec);
+        this.cellData.setDataFormat(dataFormat);
+        this.cellData.setDataFormatString(BuiltinFormats.getBuiltinFormat(dataFormat,
+            formatListener.getFormatString(numrec), context.readSheetHolder().getGlobalConfiguration().getLocale()));
     }
 
     @Override

src/main/java/com/alibaba/excel/analysis/v07/XlsxSaxAnalyser.java

@@ -15,7 +15,6 @@ import javax.xml.parsers.SAXParserFactory;
 import org.apache.poi.openxml4j.opc.OPCPackage;
 import org.apache.poi.openxml4j.opc.PackageAccess;
 import org.apache.poi.openxml4j.opc.PackagePart;
-import org.apache.poi.ss.usermodel.Sheet;
 import org.apache.poi.xssf.eventusermodel.XSSFReader;
 import org.apache.poi.xssf.model.CommentsTable;
 import org.apache.poi.xssf.model.StylesTable;
@@ -164,7 +163,13 @@ public class XlsxSaxAnalyser implements ExcelReadExecutor {
     private void parseXmlSource(InputStream inputStream, ContentHandler handler) {
         InputSource inputSource = new InputSource(inputStream);
         try {
-            SAXParserFactory saxFactory = SAXParserFactory.newInstance();
+            SAXParserFactory saxFactory;
+            String xlsxSAXParserFactoryName = analysisContext.readWorkbookHolder().getXlsxSAXParserFactoryName();
+            if (StringUtils.isEmpty(xlsxSAXParserFactoryName)) {
+                saxFactory = SAXParserFactory.newInstance();
+            } else {
+                saxFactory = SAXParserFactory.newInstance(xlsxSAXParserFactoryName, null);
+            }
             saxFactory.setFeature("http://apache.org/xml/features/disallow-doctype-decl", true);
             saxFactory.setFeature("http://xml.org/sax/features/external-general-entities", false);
             saxFactory.setFeature("http://xml.org/sax/features/external-parameter-entities", false);

src/main/java/com/alibaba/excel/analysis/v07/handlers/CountRowCellHandler.java

@@ -10,7 +10,7 @@ import com.alibaba.excel.context.AnalysisContext;
 
 /**
  * Cell Handler
- * 
+ *
  * @author jipengfei
  */
 public class CountRowCellHandler implements XlsxCellHandler {
@@ -31,7 +31,7 @@ public class CountRowCellHandler implements XlsxCellHandler {
         String d = attributes.getValue(DIMENSION_REF);
         String totalStr = d.substring(d.indexOf(":") + 1, d.length());
         String c = totalStr.toUpperCase().replaceAll("[A-Z]", "");
-        analysisContext.readSheetHolder().setTotal(Integer.parseInt(c));
+        analysisContext.readSheetHolder().setApproximateTotalRowNumber(Integer.parseInt(c));
     }
 
     @Override

src/main/java/com/alibaba/excel/analysis/v07/handlers/DefaultCellHandler.java

@@ -9,11 +9,10 @@ import static com.alibaba.excel.constant.ExcelXmlConstants.CELL_VALUE_TYPE_TAG;
 
 import java.math.BigDecimal;
 import java.util.Deque;
+import java.util.LinkedHashMap;
 import java.util.LinkedList;
 import java.util.Map;
-import java.util.TreeMap;
 
-import org.apache.poi.ss.usermodel.BuiltinFormats;
 import org.apache.poi.xssf.model.StylesTable;
 import org.apache.poi.xssf.usermodel.XSSFCellStyle;
 import org.apache.poi.xssf.usermodel.XSSFRichTextString;
@@ -21,6 +20,7 @@ import org.xml.sax.Attributes;
 
 import com.alibaba.excel.analysis.v07.XlsxCellHandler;
 import com.alibaba.excel.analysis.v07.XlsxRowResultHolder;
+import com.alibaba.excel.constant.BuiltinFormats;
 import com.alibaba.excel.constant.ExcelXmlConstants;
 import com.alibaba.excel.context.AnalysisContext;
 import com.alibaba.excel.enums.CellDataTypeEnum;
@@ -37,7 +37,7 @@ public class DefaultCellHandler implements XlsxCellHandler, XlsxRowResultHolder
     private final AnalysisContext analysisContext;
     private Deque<String> currentTagDeque = new LinkedList<String>();
     private int curCol;
-    private Map<Integer, CellData> curRowContent = new TreeMap<Integer, CellData>();
+    private Map<Integer, CellData> curRowContent = new LinkedHashMap<Integer, CellData>();
     private CellData currentCellData;
     private StringBuilder dataStringBuilder;
     private StringBuilder formulaStringBuilder;
@@ -54,7 +54,7 @@ public class DefaultCellHandler implements XlsxCellHandler, XlsxRowResultHolder
 
     @Override
     public void clearResult() {
-        curRowContent = new TreeMap<Integer, CellData>();
+        curRowContent = new LinkedHashMap<Integer, CellData>();
     }
 
     @Override
@@ -87,13 +87,10 @@ public class DefaultCellHandler implements XlsxCellHandler, XlsxRowResultHolder
                 int dateFormatIndexInteger = Integer.parseInt(dateFormatIndex);
                 XSSFCellStyle xssfCellStyle = stylesTable.getStyleAt(dateFormatIndexInteger);
                 int dataFormat = xssfCellStyle.getDataFormat();
-                String dataFormatString = xssfCellStyle.getDataFormatString();
                 currentCellData.setDataFormat(dataFormat);
-                if (dataFormatString == null) {
-                    currentCellData.setDataFormatString(BuiltinFormats.getBuiltinFormat(dataFormat));
-                } else {
-                    currentCellData.setDataFormatString(dataFormatString);
-                }
+                currentCellData.setDataFormatString(
+                    BuiltinFormats.getBuiltinFormat(dataFormat, xssfCellStyle.getDataFormatString(),
+                        analysisContext.readSheetHolder().getGlobalConfiguration().getLocale()));
             }
         }
         // cell is formula

src/main/java/com/alibaba/excel/constant/BuiltinFormats.java

@@ -0,0 +1,379 @@
+package com.alibaba.excel.constant;
+
+import java.util.Locale;
+
+/**
+ * Excel's built-in format conversion.Currently only supports Chinese.
+ *
+ * <p>
+ * If it is not Chinese, it is recommended to directly modify the builtinFormats, which will better support
+ * internationalization in the future.
+ *
+ * <p>
+ * Specific correspondence please see:
+ * https://docs.microsoft.com/en-us/dotnet/api/documentformat.openxml.spreadsheet.numberingformat?view=openxml-2.8.1
+ *
+ * @author Jiaju Zhuang
+ **/
+public class BuiltinFormats {
+
+    private static final String[] BUILTIN_FORMATS_CN = {
+        // 0
+        "General",
+        // 1
+        "0",
+        // 2
+        "0.00",
+        // 3
+        "#,##0",
+        // 4
+        "#,##0.00",
+        // 5
+        "\"￥\"#,##0_);(\"￥\"#,##0)",
+        // 6
+        "\"￥\"#,##0_);[Red](\"￥\"#,##0)",
+        // 7
+        "\"￥\"#,##0.00_);(\"￥\"#,##0.00)",
+        // 8
+        "\"￥\"#,##0.00_);[Red](\"￥\"#,##0.00)",
+        // 9
+        "0%",
+        // 10
+        "0.00%",
+        // 11
+        "0.00E+00",
+        // 12
+        "# ?/?",
+        // 13
+        "# ??/??",
+        // 14
+        // The official documentation shows "m/d/yy", but the actual test is "yyyy/m/d".
+        "yyyy/m/d",
+        // 15
+        "d-mmm-yy",
+        // 16
+        "d-mmm",
+        // 17
+        "mmm-yy",
+        // 18
+        "h:mm AM/PM",
+        // 19
+        "h:mm:ss AM/PM",
+        // 20
+        "h:mm",
+        // 21
+        "h:mm:ss",
+        // 22
+        // The official documentation shows "m/d/yy h:mm", but the actual test is "yyyy/m/d h:mm".
+        "yyyy/m/d h:mm",
+        // 23-26 No specific correspondence found in the official documentation.
+        // 23
+        null,
+        // 24
+        null,
+        // 25
+        null,
+        // 26
+        null,
+        // 27
+        "yyyy\"年\"m\"月\"",
+        // 28
+        "m\"月\"d\"日\"",
+        // 29
+        "m\"月\"d\"日\"",
+        // 30
+        "m-d-yy",
+        // 31
+        "yyyy\"年\"m\"月\"d\"日\"",
+        // 32
+        "h\"时\"mm\"分\"",
+        // 33
+        "h\"时\"mm\"分\"ss\"秒\"",
+        // 34
+        "上午/下午h\"时\"mm\"分\"",
+        // 35
+        "上午/下午h\"时\"mm\"分\"ss\"秒\"",
+        // 36
+        "yyyy\"年\"m\"月\"",
+        // 37
+        "#,##0_);(#,##0)",
+        // 38
+        "#,##0_);[Red](#,##0)",
+        // 39
+        "#,##0.00_);(#,##0.00)",
+        // 40
+        "#,##0.00_);[Red](#,##0.00)",
+        // 41
+        "_(* #,##0_);_(* (#,##0);_(* \"-\"_);_(@_)",
+        // 42
+        "_(\"￥\"* #,##0_);_(\"￥\"* (#,##0);_(\"￥\"* \"-\"_);_(@_)",
+        // 43
+        "_(* #,##0.00_);_(* (#,##0.00);_(* \"-\"??_);_(@_)",
+        // 44
+        "_(\"￥\"* #,##0.00_);_(\"￥\"* (#,##0.00);_(\"￥\"* \"-\"??_);_(@_)",
+        // 45
+        "mm:ss",
+        // 46
+        "[h]:mm:ss",
+        // 47
+        "mm:ss.0",
+        // 48
+        "##0.0E+0",
+        // 49
+        "@",
+        // 50
+        "yyyy\"年\"m\"月\"",
+        // 51
+        "m\"月\"d\"日\"",
+        // 52
+        "yyyy\"年\"m\"月\"",
+        // 53
+        "m\"月\"d\"日\"",
+        // 54
+        "m\"月\"d\"日\"",
+        // 55
+        "上午/下午h\"时\"mm\"分\"",
+        // 56
+        "上午/下午h\"时\"mm\"分\"ss\"秒\"",
+        // 57
+        "yyyy\"年\"m\"月\"",
+        // 58
+        "m\"月\"d\"日\"",
+        // 59
+        "t0",
+        // 60
+        "t0.00",
+        // 61
+        "t#,##0",
+        // 62
+        "t#,##0.00",
+        // 63-66 No specific correspondence found in the official documentation.
+        // 63
+        null,
+        // 64
+        null,
+        // 65
+        null,
+        // 66
+        null,
+        // 67
+        "t0%",
+        // 68
+        "t0.00%",
+        // 69
+        "t# ?/?",
+        // 70
+        "t# ??/??",
+        // 71
+        "ว/ด/ปปปป",
+        // 72
+        "ว-ดดด-ปป",
+        // 73
+        "ว-ดดด",
+        // 74
+        "ดดด-ปป",
+        // 75
+        "ช:นน",
+        // 76
+        "ช:นน:ทท",
+        // 77
+        "ว/ด/ปปปป ช:นน",
+        // 78
+        "นน:ทท",
+        // 79
+        "[ช]:นน:ทท",
+        // 80
+        "นน:ทท.0",
+        // 81
+        "d/m/bb",
+        // end
+    };
+
+    private static final String[] BUILTIN_FORMATS_US = {
+        // 0
+        "General",
+        // 1
+        "0",
+        // 2
+        "0.00",
+        // 3
+        "#,##0",
+        // 4
+        "#,##0.00",
+        // 5
+        "\"$\"#,##0_);(\"$\"#,##0)",
+        // 6
+        "\"$\"#,##0_);[Red](\"$\"#,##0)",
+        // 7
+        "\"$\"#,##0.00_);(\"$\"#,##0.00)",
+        // 8
+        "\"$\"#,##0.00_);[Red](\"$\"#,##0.00)",
+        // 9
+        "0%",
+        // 10
+        "0.00%",
+        // 11
+        "0.00E+00",
+        // 12
+        "# ?/?",
+        // 13
+        "# ??/??",
+        // 14
+        // The official documentation shows "m/d/yy", but the actual test is "yyyy/m/d".
+        "yyyy/m/d",
+        // 15
+        "d-mmm-yy",
+        // 16
+        "d-mmm",
+        // 17
+        "mmm-yy",
+        // 18
+        "h:mm AM/PM",
+        // 19
+        "h:mm:ss AM/PM",
+        // 20
+        "h:mm",
+        // 21
+        "h:mm:ss",
+        // 22
+        // The official documentation shows "m/d/yy h:mm", but the actual test is "yyyy/m/d h:mm".
+        "yyyy/m/d h:mm",
+        // 23-26 No specific correspondence found in the official documentation.
+        // 23
+        null,
+        // 24
+        null,
+        // 25
+        null,
+        // 26
+        null,
+        // 27
+        "yyyy\"年\"m\"月\"",
+        // 28
+        "m\"月\"d\"日\"",
+        // 29
+        "m\"月\"d\"日\"",
+        // 30
+        "m-d-yy",
+        // 31
+        "yyyy\"年\"m\"月\"d\"日\"",
+        // 32
+        "h\"时\"mm\"分\"",
+        // 33
+        "h\"时\"mm\"分\"ss\"秒\"",
+        // 34
+        "上午/下午h\"时\"mm\"分\"",
+        // 35
+        "上午/下午h\"时\"mm\"分\"ss\"秒\"",
+        // 36
+        "yyyy\"年\"m\"月\"",
+        // 37
+        "#,##0_);(#,##0)",
+        // 38
+        "#,##0_);[Red](#,##0)",
+        // 39
+        "#,##0.00_);(#,##0.00)",
+        // 40
+        "#,##0.00_);[Red](#,##0.00)",
+        // 41
+        "_(* #,##0_);_(* (#,##0);_(* \"-\"_);_(@_)",
+        // 42
+        "_(\"$\"* #,##0_);_(\"$\"* (#,##0);_(\"$\"* \"-\"_);_(@_)",
+        // 43
+        "_(* #,##0.00_);_(* (#,##0.00);_(* \"-\"??_);_(@_)",
+        // 44
+        "_(\"$\"* #,##0.00_);_(\"$\"* (#,##0.00);_(\"$\"* \"-\"??_);_(@_)",
+        // 45
+        "mm:ss",
+        // 46
+        "[h]:mm:ss",
+        // 47
+        "mm:ss.0",
+        // 48
+        "##0.0E+0",
+        // 49
+        "@",
+        // 50
+        "yyyy\"年\"m\"月\"",
+        // 51
+        "m\"月\"d\"日\"",
+        // 52
+        "yyyy\"年\"m\"月\"",
+        // 53
+        "m\"月\"d\"日\"",
+        // 54
+        "m\"月\"d\"日\"",
+        // 55
+        "上午/下午h\"时\"mm\"分\"",
+        // 56
+        "上午/下午h\"时\"mm\"分\"ss\"秒\"",
+        // 57
+        "yyyy\"年\"m\"月\"",
+        // 58
+        "m\"月\"d\"日\"",
+        // 59
+        "t0",
+        // 60
+        "t0.00",
+        // 61
+        "t#,##0",
+        // 62
+        "t#,##0.00",
+        // 63-66 No specific correspondence found in the official documentation.
+        // 63
+        null,
+        // 64
+        null,
+        // 65
+        null,
+        // 66
+        null,
+        // 67
+        "t0%",
+        // 68
+        "t0.00%",
+        // 69
+        "t# ?/?",
+        // 70
+        "t# ??/??",
+        // 71
+        "ว/ด/ปปปป",
+        // 72
+        "ว-ดดด-ปป",
+        // 73
+        "ว-ดดด",
+        // 74
+        "ดดด-ปป",
+        // 75
+        "ช:นน",
+        // 76
+        "ช:นน:ทท",
+        // 77
+        "ว/ด/ปปปป ช:นน",
+        // 78
+        "นน:ทท",
+        // 79
+        "[ช]:นน:ทท",
+        // 80
+        "นน:ทท.0",
+        // 81
+        "d/m/bb",
+        // end
+    };
+
+    public static String getBuiltinFormat(Integer index, String defaultFormat, Locale locale) {
+        String[] builtinFormat = switchBuiltinFormats(locale);
+        if (index == null || index < 0 || index >= builtinFormat.length) {
+            return defaultFormat;
+        }
+        return builtinFormat[index];
+    }
+
+    private static String[] switchBuiltinFormats(Locale locale) {
+        if (locale != null && Locale.US.getCountry().equals(locale.getCountry())) {
+            return BUILTIN_FORMATS_US;
+        }
+        return BUILTIN_FORMATS_CN;
+    }
+
+}

src/main/java/com/alibaba/excel/context/AnalysisContext.java

@@ -2,7 +2,6 @@ package com.alibaba.excel.context;
 
 import java.io.InputStream;
 
-import com.alibaba.excel.analysis.ExcelReadExecutor;
 import com.alibaba.excel.event.AnalysisEventListener;
 import com.alibaba.excel.metadata.Sheet;
 import com.alibaba.excel.read.metadata.ReadSheet;

src/main/java/com/alibaba/excel/context/WriteContext.java

@@ -66,9 +66,10 @@ public interface WriteContext {
 
     /**
      * close
+     *
+     * @param onException
      */
-    void finish();
-
+    void finish(boolean onException);
 
     /**
      * Current sheet

src/main/java/com/alibaba/excel/context/WriteContextImpl.java

@@ -1,27 +1,17 @@
 package com.alibaba.excel.context;
 
-import com.alibaba.excel.support.ExcelTypeEnum;
-import com.alibaba.excel.util.FileUtils;
-import com.alibaba.excel.util.StringUtils;
-
 import java.io.File;
-import java.io.FileInputStream;
 import java.io.FileOutputStream;
-import java.io.InputStream;
 import java.io.OutputStream;
-import java.security.GeneralSecurityException;
 import java.util.Map;
 import java.util.UUID;
 
 import org.apache.poi.hssf.record.crypto.Biff8EncryptionKey;
-import org.apache.poi.hssf.usermodel.HSSFWorkbook;
 import org.apache.poi.openxml4j.opc.OPCPackage;
 import org.apache.poi.openxml4j.opc.PackageAccess;
-import org.apache.poi.poifs.crypt.Decryptor;
 import org.apache.poi.poifs.crypt.EncryptionInfo;
 import org.apache.poi.poifs.crypt.EncryptionMode;
 import org.apache.poi.poifs.crypt.Encryptor;
-import org.apache.poi.poifs.filesystem.DocumentOutputStream;
 import org.apache.poi.poifs.filesystem.POIFSFileSystem;
 import org.apache.poi.ss.usermodel.Cell;
 import org.apache.poi.ss.usermodel.Row;
@@ -36,6 +26,11 @@ import com.alibaba.excel.enums.WriteTypeEnum;
 import com.alibaba.excel.exception.ExcelGenerateException;
 import com.alibaba.excel.metadata.CellData;
 import com.alibaba.excel.metadata.Head;
+import com.alibaba.excel.support.ExcelTypeEnum;
+import com.alibaba.excel.util.DateUtils;
+import com.alibaba.excel.util.FileUtils;
+import com.alibaba.excel.util.NumberDataFormatterUtils;
+import com.alibaba.excel.util.StringUtils;
 import com.alibaba.excel.util.WorkBookUtil;
 import com.alibaba.excel.util.WriteHandlerUtils;
 import com.alibaba.excel.write.metadata.WriteSheet;
@@ -72,6 +67,10 @@ public class WriteContextImpl implements WriteContext {
      * Configuration of currently operated cell
      */
     private WriteHolder currentWriteHolder;
+    /**
+     * Prevent multiple shutdowns
+     */
+    private boolean finished = false;
 
     public WriteContextImpl(WriteWorkbook writeWorkbook) {
         if (writeWorkbook == null) {
@@ -172,20 +171,24 @@ public class WriteContextImpl implements WriteContext {
         int newRowIndex = writeSheetHolder.getNewRowIndexAndStartDoWrite();
         newRowIndex += currentWriteHolder.relativeHeadRowIndex();
         // Combined head
-        addMergedRegionToCurrentSheet(excelWriteHeadProperty, newRowIndex);
+        if (currentWriteHolder.automaticMergeHead()) {
+            addMergedRegionToCurrentSheet(excelWriteHeadProperty, newRowIndex);
+        }
         for (int relativeRowIndex = 0, i = newRowIndex; i < excelWriteHeadProperty.getHeadRowNumber() + newRowIndex;
             i++, relativeRowIndex++) {
             WriteHandlerUtils.beforeRowCreate(this, newRowIndex, relativeRowIndex, Boolean.TRUE);
             Row row = WorkBookUtil.createRow(writeSheetHolder.getSheet(), i);
             WriteHandlerUtils.afterRowCreate(this, row, relativeRowIndex, Boolean.TRUE);
             addOneRowOfHeadDataToExcel(row, excelWriteHeadProperty.getHeadMap(), relativeRowIndex);
+            WriteHandlerUtils.afterRowDispose(this, row, relativeRowIndex, Boolean.TRUE);
         }
     }
 
     private void addMergedRegionToCurrentSheet(ExcelWriteHeadProperty excelWriteHeadProperty, int rowIndex) {
         for (com.alibaba.excel.metadata.CellRange cellRangeModel : excelWriteHeadProperty.headCellRangeList()) {
-            writeSheetHolder.getSheet().addMergedRegion(new CellRangeAddress(cellRangeModel.getFirstRow() + rowIndex,
-                cellRangeModel.getLastRow() + rowIndex, cellRangeModel.getFirstCol(), cellRangeModel.getLastCol()));
+            writeSheetHolder.getSheet()
+                .addMergedRegionUnsafe(new CellRangeAddress(cellRangeModel.getFirstRow() + rowIndex,
+                    cellRangeModel.getLastRow() + rowIndex, cellRangeModel.getFirstCol(), cellRangeModel.getLastCol()));
         }
     }
 
@@ -197,8 +200,7 @@ public class WriteContextImpl implements WriteContext {
             Cell cell = row.createCell(columnIndex);
             WriteHandlerUtils.afterCellCreate(this, cell, head, relativeRowIndex, Boolean.TRUE);
             cell.setCellValue(head.getHeadNameList().get(relativeRowIndex));
-            CellData cellData = null;
-            WriteHandlerUtils.afterCellDispose(this, cellData, cell, head, relativeRowIndex, Boolean.TRUE);
+            WriteHandlerUtils.afterCellDispose(this, (CellData)null, cell, head, relativeRowIndex, Boolean.TRUE);
         }
     }
 
@@ -256,25 +258,39 @@ public class WriteContextImpl implements WriteContext {
     }
 
     @Override
-    public void finish() {
+    public void finish(boolean onException) {
+        if (finished) {
+            return;
+        }
+        finished = true;
         WriteHandlerUtils.afterWorkbookDispose(this);
         if (writeWorkbookHolder == null) {
             return;
         }
-
+        Throwable throwable = null;
         boolean isOutputStreamEncrypt = false;
-        try {
-            isOutputStreamEncrypt = doOutputStreamEncrypt07();
-        } catch (Throwable t) {
-            throwCanNotCloseIo(t);
+        // Determine if you need to write excel
+        boolean writeExcel = !onException;
+        if (writeWorkbookHolder.getWriteExcelOnException()) {
+            writeExcel = Boolean.TRUE;
+        }
+        // No data is written if an exception is thrown
+        if (writeExcel) {
+            try {
+                isOutputStreamEncrypt = doOutputStreamEncrypt07();
+            } catch (Throwable t) {
+                throwable = t;
+            }
         }
 
         if (!isOutputStreamEncrypt) {
             try {
-                writeWorkbookHolder.getWorkbook().write(writeWorkbookHolder.getOutputStream());
+                if (writeExcel) {
+                    writeWorkbookHolder.getWorkbook().write(writeWorkbookHolder.getOutputStream());
+                }
                 writeWorkbookHolder.getWorkbook().close();
             } catch (Throwable t) {
-                throwCanNotCloseIo(t);
+                throwable = t;
             }
         }
 
@@ -284,7 +300,7 @@ public class WriteContextImpl implements WriteContext {
                 ((SXSSFWorkbook)workbook).dispose();
             }
         } catch (Throwable t) {
-            throwCanNotCloseIo(t);
+            throwable = t;
         }
 
         try {
@@ -292,14 +308,14 @@ public class WriteContextImpl implements WriteContext {
                 writeWorkbookHolder.getOutputStream().close();
             }
         } catch (Throwable t) {
-            throwCanNotCloseIo(t);
+            throwable = t;
         }
 
-        if (!isOutputStreamEncrypt) {
+        if (writeExcel && !isOutputStreamEncrypt) {
             try {
                 doFileEncrypt07();
             } catch (Throwable t) {
-                throwCanNotCloseIo(t);
+                throwable = t;
             }
         }
 
@@ -308,18 +324,25 @@ public class WriteContextImpl implements WriteContext {
                 writeWorkbookHolder.getTempTemplateInputStream().close();
             }
         } catch (Throwable t) {
-            throwCanNotCloseIo(t);
+            throwable = t;
         }
 
         clearEncrypt03();
 
+        removeThreadLocalCache();
+
+        if (throwable != null) {
+            throw new ExcelGenerateException("Can not close IO.", throwable);
+        }
+
         if (LOGGER.isDebugEnabled()) {
             LOGGER.debug("Finished write.");
         }
     }
 
-    private void throwCanNotCloseIo(Throwable t) {
-        throw new ExcelGenerateException("Can not close IO", t);
+    private void removeThreadLocalCache() {
+        NumberDataFormatterUtils.removeThreadLocalCache();
+        DateUtils.removeThreadLocalCache();
     }
 
     @Override
@@ -428,7 +451,9 @@ public class WriteContextImpl implements WriteContext {
             OutputStream outputStream = encryptor.getDataStream(fileSystem);
             opcPackage.save(outputStream);
         } finally {
-            opcPackage.close();
+            if (opcPackage != null) {
+                opcPackage.close();
+            }
         }
         return fileSystem;
     }

src/main/java/com/alibaba/excel/converters/DefaultConverterLoader.java

@@ -37,6 +37,7 @@ import com.alibaba.excel.converters.string.StringBooleanConverter;
 import com.alibaba.excel.converters.string.StringErrorConverter;
 import com.alibaba.excel.converters.string.StringNumberConverter;
 import com.alibaba.excel.converters.string.StringStringConverter;
+import com.alibaba.excel.converters.url.UrlImageConverter;
 
 /**
  * Load default handler
@@ -71,6 +72,7 @@ public class DefaultConverterLoader {
         putWriteConverter(new InputStreamImageConverter());
         putWriteConverter(new ByteArrayImageConverter());
         putWriteConverter(new BoxingByteArrayImageConverter());
+        putWriteConverter(new UrlImageConverter());
         return defaultWriteConverter;
     }
 

src/main/java/com/alibaba/excel/converters/byteconverter/ByteNumberConverter.java

@@ -34,7 +34,7 @@ public class ByteNumberConverter implements Converter<Byte> {
     @Override
     public CellData convertToExcelData(Byte value, ExcelContentProperty contentProperty,
         GlobalConfiguration globalConfiguration) {
-        return new CellData(BigDecimal.valueOf(value));
+        return new CellData(new BigDecimal(Byte.toString(value)));
     }
 
 }

src/main/java/com/alibaba/excel/converters/floatconverter/FloatNumberConverter.java

@@ -34,7 +34,7 @@ public class FloatNumberConverter implements Converter<Float> {
     @Override
     public CellData convertToExcelData(Float value, ExcelContentProperty contentProperty,
         GlobalConfiguration globalConfiguration) {
-        return new CellData(BigDecimal.valueOf(value));
+        return new CellData(new BigDecimal(Float.toString(value)));
     }
 
 }

src/main/java/com/alibaba/excel/converters/integer/IntegerNumberConverter.java

@@ -34,7 +34,7 @@ public class IntegerNumberConverter implements Converter<Integer> {
     @Override
     public CellData convertToExcelData(Integer value, ExcelContentProperty contentProperty,
         GlobalConfiguration globalConfiguration) {
-        return new CellData(BigDecimal.valueOf(value));
+        return new CellData(new BigDecimal(Integer.toString(value)));
     }
 
 }

src/main/java/com/alibaba/excel/converters/shortconverter/ShortNumberConverter.java

@@ -34,7 +34,7 @@ public class ShortNumberConverter implements Converter<Short> {
     @Override
     public CellData convertToExcelData(Short value, ExcelContentProperty contentProperty,
         GlobalConfiguration globalConfiguration) {
-        return new CellData(BigDecimal.valueOf(value));
+        return new CellData(new BigDecimal(Short.toString(value)));
     }
 
 }

src/main/java/com/alibaba/excel/converters/string/StringNumberConverter.java

@@ -10,7 +10,9 @@ import com.alibaba.excel.metadata.CellData;
 import com.alibaba.excel.metadata.GlobalConfiguration;
 import com.alibaba.excel.metadata.property.ExcelContentProperty;
 import com.alibaba.excel.util.DateUtils;
+import com.alibaba.excel.util.NumberDataFormatterUtils;
 import com.alibaba.excel.util.NumberUtils;
+import com.alibaba.excel.util.StringUtils;
 
 /**
  * String and number converter
@@ -44,13 +46,9 @@ public class StringNumberConverter implements Converter<String> {
             return NumberUtils.format(cellData.getNumberValue(), contentProperty);
         }
         // Excel defines formatting
-        if (cellData.getDataFormat() != null) {
-            if (DateUtil.isADateFormat(cellData.getDataFormat(), cellData.getDataFormatString())) {
-                return DateUtils.format(DateUtil.getJavaDate(cellData.getNumberValue().doubleValue(),
-                    globalConfiguration.getUse1904windowing(), null));
-            } else {
-                return NumberUtils.format(cellData.getNumberValue(), contentProperty);
-            }
+        if (cellData.getDataFormat() != null && !StringUtils.isEmpty(cellData.getDataFormatString())) {
+            return NumberDataFormatterUtils.format(cellData.getNumberValue().doubleValue(), cellData.getDataFormat(),
+                cellData.getDataFormatString(), globalConfiguration);
         }
         // Default conversion number
         return NumberUtils.format(cellData.getNumberValue(), contentProperty);

src/main/java/com/alibaba/excel/converters/url/UrlImageConverter.java

@@ -0,0 +1,52 @@
+package com.alibaba.excel.converters.url;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+
+import com.alibaba.excel.converters.Converter;
+import com.alibaba.excel.enums.CellDataTypeEnum;
+import com.alibaba.excel.metadata.CellData;
+import com.alibaba.excel.metadata.GlobalConfiguration;
+import com.alibaba.excel.metadata.property.ExcelContentProperty;
+import com.alibaba.excel.util.IoUtils;
+
+/**
+ * Url and image converter
+ *
+ * @since 2.1.1
+ * @author Jiaju Zhuang
+ */
+public class UrlImageConverter implements Converter<URL> {
+    @Override
+    public Class supportJavaTypeKey() {
+        return URL.class;
+    }
+
+    @Override
+    public CellDataTypeEnum supportExcelTypeKey() {
+        return CellDataTypeEnum.IMAGE;
+    }
+
+    @Override
+    public URL convertToJavaData(CellData cellData, ExcelContentProperty contentProperty,
+        GlobalConfiguration globalConfiguration) {
+        throw new UnsupportedOperationException("Cannot convert images to url.");
+    }
+
+    @Override
+    public CellData convertToExcelData(URL value, ExcelContentProperty contentProperty,
+        GlobalConfiguration globalConfiguration) throws IOException {
+        InputStream inputStream = null;
+        try {
+            inputStream = value.openStream();
+            byte[] bytes = IoUtils.toByteArray(inputStream);
+            return new CellData(bytes);
+        } finally {
+            if (inputStream != null) {
+                inputStream.close();
+            }
+        }
+    }
+
+}

src/main/java/com/alibaba/excel/event/AnalysisEventListener.java

@@ -16,7 +16,7 @@ public abstract class AnalysisEventListener<T> implements ReadListener<T> {
 
     @Override
     public void invokeHead(Map<Integer, CellData> headMap, AnalysisContext context) {
-        invokeHeadMap(ConverterUtils.convertToStringMap(headMap, context.currentReadHolder()), context);
+        invokeHeadMap(ConverterUtils.convertToStringMap(headMap, context), context);
     }
 
     /**

src/main/java/com/alibaba/excel/exception/ExcelDataConvertException.java

@@ -1,5 +1,6 @@
 package com.alibaba.excel.exception;
 
+import com.alibaba.excel.metadata.CellData;
 import com.alibaba.excel.metadata.property.ExcelContentProperty;
 import com.alibaba.excel.write.builder.ExcelWriterBuilder;
 
@@ -17,6 +18,10 @@ public class ExcelDataConvertException extends RuntimeException {
      * NotNull.
      */
     private Integer columnIndex;
+    /**
+     * NotNull.
+     */
+    private CellData cellData;
     /**
      * Nullable.Only when the header is configured and when the class header is used is not null.
      *
@@ -24,34 +29,24 @@ public class ExcelDataConvertException extends RuntimeException {
      */
     private ExcelContentProperty excelContentProperty;
 
-    public ExcelDataConvertException(String message) {
-        super(message);
-    }
-
-    public ExcelDataConvertException(Integer rowIndex, Integer columnIndex, ExcelContentProperty excelContentProperty,
-        String message) {
+    public ExcelDataConvertException(Integer rowIndex, Integer columnIndex, CellData cellData,
+        ExcelContentProperty excelContentProperty, String message) {
         super(message);
         this.rowIndex = rowIndex;
         this.columnIndex = columnIndex;
+        this.cellData = cellData;
         this.excelContentProperty = excelContentProperty;
     }
 
-    public ExcelDataConvertException(Integer rowIndex, Integer columnIndex, ExcelContentProperty excelContentProperty,
-        String message, Throwable cause) {
+    public ExcelDataConvertException(Integer rowIndex, Integer columnIndex, CellData cellData,
+        ExcelContentProperty excelContentProperty, String message, Throwable cause) {
         super(message, cause);
         this.rowIndex = rowIndex;
         this.columnIndex = columnIndex;
+        this.cellData = cellData;
         this.excelContentProperty = excelContentProperty;
     }
 
-    public ExcelDataConvertException(String message, Throwable cause) {
-        super(message, cause);
-    }
-
-    public ExcelDataConvertException(Throwable cause) {
-        super(cause);
-    }
-
     public Integer getRowIndex() {
         return rowIndex;
     }
@@ -75,4 +70,12 @@ public class ExcelDataConvertException extends RuntimeException {
     public void setExcelContentProperty(ExcelContentProperty excelContentProperty) {
         this.excelContentProperty = excelContentProperty;
     }
+
+    public CellData getCellData() {
+        return cellData;
+    }
+
+    public void setCellData(CellData cellData) {
+        this.cellData = cellData;
+    }
 }

src/main/java/com/alibaba/excel/metadata/AbstractHolder.java

@@ -1,6 +1,7 @@
 package com.alibaba.excel.metadata;
 
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 
 import com.alibaba.excel.converters.Converter;
@@ -27,7 +28,6 @@ public abstract class AbstractHolder implements ConfigurationHolder {
      * Some global variables
      */
     private GlobalConfiguration globalConfiguration;
-
     /**
      * <p>
      * Read key:
@@ -58,6 +58,16 @@ public abstract class AbstractHolder implements ConfigurationHolder {
         } else {
             globalConfiguration.setAutoTrim(basicParameter.getAutoTrim());
         }
+
+        if (basicParameter.getLocale() == null) {
+            if (prentAbstractHolder == null) {
+                globalConfiguration.setLocale(Locale.getDefault());
+            } else {
+                globalConfiguration.setLocale(prentAbstractHolder.getGlobalConfiguration().getLocale());
+            }
+        } else {
+            globalConfiguration.setLocale(basicParameter.getLocale());
+        }
     }
 
     public Boolean getNewInitialization() {

src/main/java/com/alibaba/excel/metadata/AbstractParameterBuilder.java

@@ -0,0 +1,93 @@
+package com.alibaba.excel.metadata;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Locale;
+
+import com.alibaba.excel.converters.Converter;
+
+/**
+ * ExcelBuilder
+ *
+ * @author Jiaju Zhuang
+ */
+public abstract class AbstractParameterBuilder<T extends AbstractParameterBuilder, C extends BasicParameter> {
+    /**
+     * You can only choose one of the {@link #head(List)} and {@link #head(Class)}
+     *
+     * @param head
+     * @return
+     */
+    public T head(List<List<String>> head) {
+        parameter().setHead(head);
+        return self();
+    }
+
+    /**
+     * You can only choose one of the {@link #head(List)} and {@link #head(Class)}
+     *
+     * @param clazz
+     * @return
+     */
+    public T head(Class clazz) {
+        parameter().setClazz(clazz);
+        return self();
+    }
+
+    /**
+     * Custom type conversions override the default.
+     *
+     * @param converter
+     * @return
+     */
+    public T registerConverter(Converter converter) {
+        if (parameter().getCustomConverterList() == null) {
+            parameter().setCustomConverterList(new ArrayList<Converter>());
+        }
+        parameter().getCustomConverterList().add(converter);
+        return self();
+    }
+
+    /**
+     * true if date uses 1904 windowing, or false if using 1900 date windowing.
+     *
+     * default is false
+     *
+     * @param use1904windowing
+     * @return
+     */
+    public T use1904windowing(Boolean use1904windowing) {
+        parameter().setUse1904windowing(use1904windowing);
+        return self();
+    }
+
+    /**
+     * A <code>Locale</code> object represents a specific geographical, political, or cultural region. This parameter is
+     * used when formatting dates and numbers.
+     *
+     * @param locale
+     * @return
+     */
+    public T locale(Locale locale) {
+        parameter().setLocale(locale);
+        return self();
+    }
+
+    /**
+     * Automatic trim includes sheet name and content
+     *
+     * @param autoTrim
+     * @return
+     */
+    public T autoTrim(Boolean autoTrim) {
+        parameter().setAutoTrim(autoTrim);
+        return self();
+    }
+
+    @SuppressWarnings("unchecked")
+    protected T self() {
+        return (T)this;
+    }
+
+    protected abstract C parameter();
+}

src/main/java/com/alibaba/excel/metadata/BasicParameter.java

@@ -1,6 +1,7 @@
 package com.alibaba.excel.metadata;
 
 import java.util.List;
+import java.util.Locale;
 
 import com.alibaba.excel.converters.Converter;
 
@@ -34,6 +35,11 @@ public class BasicParameter {
      * @return
      */
     private Boolean use1904windowing;
+    /**
+     * A <code>Locale</code> object represents a specific geographical, political, or cultural region. This parameter is
+     * used when formatting dates and numbers.
+     */
+    private Locale locale;
 
     public List<List<String>> getHead() {
         return head;
@@ -75,4 +81,11 @@ public class BasicParameter {
         this.use1904windowing = use1904windowing;
     }
 
+    public Locale getLocale() {
+        return locale;
+    }
+
+    public void setLocale(Locale locale) {
+        this.locale = locale;
+    }
 }

src/main/java/com/alibaba/excel/metadata/CellData.java

@@ -202,6 +202,9 @@ public class CellData<T> {
      * Ensure that the object does not appear null
      */
     public void checkEmpty() {
+        if (type == null) {
+            type = CellDataTypeEnum.EMPTY;
+        }
         switch (type) {
             case STRING:
             case ERROR:
@@ -225,16 +228,22 @@ public class CellData<T> {
 
     @Override
     public String toString() {
+        if (type == null) {
+            return StringUtils.EMPTY;
+        }
         switch (type) {
             case NUMBER:
                 return numberValue.toString();
             case BOOLEAN:
                 return booleanValue.toString();
+            case DIRECT_STRING:
             case STRING:
             case ERROR:
                 return stringValue;
+            case IMAGE:
+                return "image[" + imageValue.length + "]";
             default:
-                return "empty";
+                return StringUtils.EMPTY;
         }
     }
 

src/main/java/com/alibaba/excel/metadata/DataFormatter.java

@@ -0,0 +1,786 @@
+/*
+ * ==================================================================== Licensed to the Apache Software Foundation (ASF)
+ * under one or more contributor license agreements. See the NOTICE file distributed with this work for additional
+ * information regarding copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the
+ * License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ *
+ * 2012 - Alfresco Software, Ltd. Alfresco Software has modified source of this file The details of changes as svn diff
+ * can be found in svn at location root/projects/3rd-party/src
+ * ====================================================================
+ */
+package com.alibaba.excel.metadata;
+
+import java.math.BigDecimal;
+import java.math.RoundingMode;
+import java.text.DateFormatSymbols;
+import java.text.DecimalFormat;
+import java.text.DecimalFormatSymbols;
+import java.text.FieldPosition;
+import java.text.Format;
+import java.text.ParsePosition;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Locale;
+import java.util.Map;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.apache.poi.ss.usermodel.DateUtil;
+import org.apache.poi.ss.usermodel.ExcelGeneralNumberFormat;
+import org.apache.poi.ss.usermodel.ExcelStyleDateFormatter;
+import org.apache.poi.ss.usermodel.FractionFormat;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.alibaba.excel.util.DateUtils;
+
+/**
+ * Written with reference to {@link org.apache.poi.ss.usermodel.DataFormatter}.Made some optimizations for date
+ * conversion.
+ * <p>
+ * This is a non-thread-safe class.
+ *
+ * @author Jiaju Zhuang
+ */
+public class DataFormatter {
+    /** For logging any problems we find */
+    private static final Logger LOGGER = LoggerFactory.getLogger(DataFormatter.class);
+    private static final String defaultFractionWholePartFormat = "#";
+    private static final String defaultFractionFractionPartFormat = "#/##";
+    /** Pattern to find a number format: "0" or "#" */
+    private static final Pattern numPattern = Pattern.compile("[0#]+");
+
+    /** Pattern to find days of week as text "ddd...." */
+    private static final Pattern daysAsText = Pattern.compile("([d]{3,})", Pattern.CASE_INSENSITIVE);
+
+    /** Pattern to find "AM/PM" marker */
+    private static final Pattern amPmPattern =
+        Pattern.compile("(([AP])[M/P]*)|(([上下])[午/下]*)", Pattern.CASE_INSENSITIVE);
+
+    /** Pattern to find formats with condition ranges e.g. [>=100] */
+    private static final Pattern rangeConditionalPattern =
+        Pattern.compile(".*\\[\\s*(>|>=|<|<=|=)\\s*[0-9]*\\.*[0-9].*");
+
+    /**
+     * A regex to find locale patterns like [$$-1009] and [$?-452]. Note that we don't currently process these into
+     * locales
+     */
+    private static final Pattern localePatternGroup = Pattern.compile("(\\[\\$[^-\\]]*-[0-9A-Z]+])");
+
+    /**
+     * A regex to match the colour formattings rules. Allowed colours are: Black, Blue, Cyan, Green, Magenta, Red,
+     * White, Yellow, "Color n" (1<=n<=56)
+     */
+    private static final Pattern colorPattern = Pattern.compile(
+        "(\\[BLACK])|(\\[BLUE])|(\\[CYAN])|(\\[GREEN])|" + "(\\[MAGENTA])|(\\[RED])|(\\[WHITE])|(\\[YELLOW])|"
+            + "(\\[COLOR\\s*\\d])|(\\[COLOR\\s*[0-5]\\d])|(\\[DBNum(1|2|3)])|(\\[\\$-\\d{0,3}])",
+        Pattern.CASE_INSENSITIVE);
+
+    /**
+     * A regex to identify a fraction pattern. This requires that replaceAll("\\?", "#") has already been called
+     */
+    private static final Pattern fractionPattern = Pattern.compile("(?:([#\\d]+)\\s+)?(#+)\\s*/\\s*([#\\d]+)");
+
+    /**
+     * A regex to strip junk out of fraction formats
+     */
+    private static final Pattern fractionStripper = Pattern.compile("(\"[^\"]*\")|([^ ?#\\d/]+)");
+
+    /**
+     * A regex to detect if an alternate grouping character is used in a numeric format
+     */
+    private static final Pattern alternateGrouping = Pattern.compile("([#0]([^.#0])[#0]{3})");
+
+    /**
+     * Cells formatted with a date or time format and which contain invalid date or time values show 255 pound signs
+     * ("#").
+     */
+    private static final String invalidDateTimeString;
+    static {
+        StringBuilder buf = new StringBuilder();
+        for (int i = 0; i < 255; i++)
+            buf.append('#');
+        invalidDateTimeString = buf.toString();
+    }
+
+    /**
+     * The decimal symbols of the locale used for formatting values.
+     */
+    private DecimalFormatSymbols decimalSymbols;
+
+    /**
+     * The date symbols of the locale used for formatting values.
+     */
+    private DateFormatSymbols dateSymbols;
+    /** A default format to use when a number pattern cannot be parsed. */
+    private Format defaultNumFormat;
+    /**
+     * A map to cache formats. Map<String,Format> formats
+     */
+    private final Map<String, Format> formats = new HashMap<String, Format>();
+
+    /** stores the locale valid it the last formatting call */
+    private Locale locale;
+    /**
+     * true if date uses 1904 windowing, or false if using 1900 date windowing.
+     *
+     * default is false
+     *
+     * @return
+     */
+    private Boolean use1904windowing;
+
+    /**
+     * Creates a formatter using the {@link Locale#getDefault() default locale}.
+     */
+    public DataFormatter() {
+        this(null, null);
+    }
+
+    /**
+     * Creates a formatter using the given locale.
+     *
+     */
+    public DataFormatter(Locale locale, Boolean use1904windowing) {
+        this.use1904windowing = use1904windowing != null ? use1904windowing : Boolean.FALSE;
+        this.locale = locale != null ? locale : Locale.getDefault();
+        this.dateSymbols = DateFormatSymbols.getInstance(this.locale);
+        this.decimalSymbols = DecimalFormatSymbols.getInstance(this.locale);
+    }
+
+    private Format getFormat(Integer dataFormat, String dataFormatString) {
+        // See if we already have it cached
+        Format format = formats.get(dataFormatString);
+        if (format != null) {
+            return format;
+        }
+        // Is it one of the special built in types, General or @?
+        if ("General".equalsIgnoreCase(dataFormatString) || "@".equals(dataFormatString)) {
+            format = getDefaultFormat();
+            addFormat(dataFormatString, format);
+            return format;
+        }
+
+        // Build a formatter, and cache it
+        format = createFormat(dataFormat, dataFormatString);
+        addFormat(dataFormatString, format);
+        return format;
+    }
+
+    private Format createFormat(Integer dataFormat, String dataFormatString) {
+        String formatStr = dataFormatString;
+
+        Format format = checkSpecialConverter(formatStr);
+        if (format != null) {
+            return format;
+        }
+
+        // Remove colour formatting if present
+        Matcher colourM = colorPattern.matcher(formatStr);
+        while (colourM.find()) {
+            String colour = colourM.group();
+
+            // Paranoid replacement...
+            int at = formatStr.indexOf(colour);
+            if (at == -1)
+                break;
+            String nFormatStr = formatStr.substring(0, at) + formatStr.substring(at + colour.length());
+            if (nFormatStr.equals(formatStr))
+                break;
+
+            // Try again in case there's multiple
+            formatStr = nFormatStr;
+            colourM = colorPattern.matcher(formatStr);
+        }
+
+        // Strip off the locale information, we use an instance-wide locale for everything
+        Matcher m = localePatternGroup.matcher(formatStr);
+        while (m.find()) {
+            String match = m.group();
+            String symbol = match.substring(match.indexOf('$') + 1, match.indexOf('-'));
+            if (symbol.indexOf('$') > -1) {
+                symbol = symbol.substring(0, symbol.indexOf('$')) + '\\' + symbol.substring(symbol.indexOf('$'));
+            }
+            formatStr = m.replaceAll(symbol);
+            m = localePatternGroup.matcher(formatStr);
+        }
+
+        // Check for special cases
+        if (formatStr == null || formatStr.trim().length() == 0) {
+            return getDefaultFormat();
+        }
+
+        if ("General".equalsIgnoreCase(formatStr) || "@".equals(formatStr)) {
+            return getDefaultFormat();
+        }
+
+        if (DateUtils.isADateFormat(dataFormat, formatStr)) {
+            return createDateFormat(formatStr);
+        }
+        // Excel supports fractions in format strings, which Java doesn't
+        if (formatStr.contains("#/") || formatStr.contains("?/")) {
+            String[] chunks = formatStr.split(";");
+            for (String chunk1 : chunks) {
+                String chunk = chunk1.replaceAll("\\?", "#");
+                Matcher matcher = fractionStripper.matcher(chunk);
+                chunk = matcher.replaceAll(" ");
+                chunk = chunk.replaceAll(" +", " ");
+                Matcher fractionMatcher = fractionPattern.matcher(chunk);
+                // take the first match
+                if (fractionMatcher.find()) {
+                    String wholePart = (fractionMatcher.group(1) == null) ? "" : defaultFractionWholePartFormat;
+                    return new FractionFormat(wholePart, fractionMatcher.group(3));
+                }
+            }
+
+            // Strip custom text in quotes and escaped characters for now as it can cause performance problems in
+            // fractions.
+            // String strippedFormatStr = formatStr.replaceAll("\\\\ ", " ").replaceAll("\\\\.",
+            // "").replaceAll("\"[^\"]*\"", " ").replaceAll("\\?", "#");
+            return new FractionFormat(defaultFractionWholePartFormat, defaultFractionFractionPartFormat);
+        }
+
+        if (numPattern.matcher(formatStr).find()) {
+            return createNumberFormat(formatStr);
+        }
+        return getDefaultFormat();
+    }
+
+    private Format checkSpecialConverter(String dataFormatString) {
+        if ("00000\\-0000".equals(dataFormatString) || "00000-0000".equals(dataFormatString)) {
+            return new ZipPlusFourFormat();
+        }
+        if ("[<=9999999]###\\-####;\\(###\\)\\ ###\\-####".equals(dataFormatString)
+            || "[<=9999999]###-####;(###) ###-####".equals(dataFormatString)
+            || "###\\-####;\\(###\\)\\ ###\\-####".equals(dataFormatString)
+            || "###-####;(###) ###-####".equals(dataFormatString)) {
+            return new PhoneFormat();
+        }
+        if ("000\\-00\\-0000".equals(dataFormatString) || "000-00-0000".equals(dataFormatString)) {
+            return new SSNFormat();
+        }
+        return null;
+    }
+
+    private Format createDateFormat(String pFormatStr) {
+        String formatStr = pFormatStr;
+        formatStr = formatStr.replaceAll("\\\\-", "-");
+        formatStr = formatStr.replaceAll("\\\\,", ",");
+        formatStr = formatStr.replaceAll("\\\\\\.", "."); // . is a special regexp char
+        formatStr = formatStr.replaceAll("\\\\ ", " ");
+        formatStr = formatStr.replaceAll("\\\\/", "/"); // weird: m\\/d\\/yyyy
+        formatStr = formatStr.replaceAll(";@", "");
+        formatStr = formatStr.replaceAll("\"/\"", "/"); // "/" is escaped for no reason in: mm"/"dd"/"yyyy
+        formatStr = formatStr.replace("\"\"", "'"); // replace Excel quoting with Java style quoting
+        formatStr = formatStr.replaceAll("\\\\T", "'T'"); // Quote the T is iso8601 style dates
+        formatStr = formatStr.replace("\"", "");
+
+        boolean hasAmPm = false;
+        Matcher amPmMatcher = amPmPattern.matcher(formatStr);
+        while (amPmMatcher.find()) {
+            formatStr = amPmMatcher.replaceAll("@");
+            hasAmPm = true;
+            amPmMatcher = amPmPattern.matcher(formatStr);
+        }
+        formatStr = formatStr.replaceAll("@", "a");
+
+        Matcher dateMatcher = daysAsText.matcher(formatStr);
+        if (dateMatcher.find()) {
+            String match = dateMatcher.group(0).toUpperCase(Locale.ROOT).replaceAll("D", "E");
+            formatStr = dateMatcher.replaceAll(match);
+        }
+
+        // Convert excel date format to SimpleDateFormat.
+        // Excel uses lower and upper case 'm' for both minutes and months.
+        // From Excel help:
+        /*
+            The "m" or "mm" code must appear immediately after the "h" or"hh"
+            code or immediately before the "ss" code; otherwise, Microsoft
+            Excel displays the month instead of minutes."
+          */
+        StringBuilder sb = new StringBuilder();
+        char[] chars = formatStr.toCharArray();
+        boolean mIsMonth = true;
+        List<Integer> ms = new ArrayList<Integer>();
+        boolean isElapsed = false;
+        for (int j = 0; j < chars.length; j++) {
+            char c = chars[j];
+            if (c == '\'') {
+                sb.append(c);
+                j++;
+
+                // skip until the next quote
+                while (j < chars.length) {
+                    c = chars[j];
+                    sb.append(c);
+                    if (c == '\'') {
+                        break;
+                    }
+                    j++;
+                }
+            } else if (c == '[' && !isElapsed) {
+                isElapsed = true;
+                mIsMonth = false;
+                sb.append(c);
+            } else if (c == ']' && isElapsed) {
+                isElapsed = false;
+                sb.append(c);
+            } else if (isElapsed) {
+                if (c == 'h' || c == 'H') {
+                    sb.append('H');
+                } else if (c == 'm' || c == 'M') {
+                    sb.append('m');
+                } else if (c == 's' || c == 'S') {
+                    sb.append('s');
+                } else {
+                    sb.append(c);
+                }
+            } else if (c == 'h' || c == 'H') {
+                mIsMonth = false;
+                if (hasAmPm) {
+                    sb.append('h');
+                } else {
+                    sb.append('H');
+                }
+            } else if (c == 'm' || c == 'M') {
+                if (mIsMonth) {
+                    sb.append('M');
+                    ms.add(Integer.valueOf(sb.length() - 1));
+                } else {
+                    sb.append('m');
+                }
+            } else if (c == 's' || c == 'S') {
+                sb.append('s');
+                // if 'M' precedes 's' it should be minutes ('m')
+                for (int index : ms) {
+                    if (sb.charAt(index) == 'M') {
+                        sb.replace(index, index + 1, "m");
+                    }
+                }
+                mIsMonth = true;
+                ms.clear();
+            } else if (Character.isLetter(c)) {
+                mIsMonth = true;
+                ms.clear();
+                if (c == 'y' || c == 'Y') {
+                    sb.append('y');
+                } else if (c == 'd' || c == 'D') {
+                    sb.append('d');
+                } else {
+                    sb.append(c);
+                }
+            } else {
+                if (Character.isWhitespace(c)) {
+                    ms.clear();
+                }
+                sb.append(c);
+            }
+        }
+        formatStr = sb.toString();
+
+        try {
+            return new ExcelStyleDateFormatter(formatStr, dateSymbols);
+        } catch (IllegalArgumentException iae) {
+            LOGGER.debug("Formatting failed for format {}, falling back", formatStr, iae);
+            // the pattern could not be parsed correctly,
+            // so fall back to the default number format
+            return getDefaultFormat();
+        }
+
+    }
+
+    private String cleanFormatForNumber(String formatStr) {
+        StringBuilder sb = new StringBuilder(formatStr);
+        // If they requested spacers, with "_",
+        // remove those as we don't do spacing
+        // If they requested full-column-width
+        // padding, with "*", remove those too
+        for (int i = 0; i < sb.length(); i++) {
+            char c = sb.charAt(i);
+            if (c == '_' || c == '*') {
+                if (i > 0 && sb.charAt((i - 1)) == '\\') {
+                    // It's escaped, don't worry
+                    continue;
+                }
+                if (i < sb.length() - 1) {
+                    // Remove the character we're supposed
+                    // to match the space of / pad to the
+                    // column width with
+                    sb.deleteCharAt(i + 1);
+                }
+                // Remove the _ too
+                sb.deleteCharAt(i);
+                i--;
+            }
+        }
+
+        // Now, handle the other aspects like
+        // quoting and scientific notation
+        for (int i = 0; i < sb.length(); i++) {
+            char c = sb.charAt(i);
+            // remove quotes and back slashes
+            if (c == '\\' || c == '"') {
+                sb.deleteCharAt(i);
+                i--;
+
+                // for scientific/engineering notation
+            } else if (c == '+' && i > 0 && sb.charAt(i - 1) == 'E') {
+                sb.deleteCharAt(i);
+                i--;
+            }
+        }
+
+        return sb.toString();
+    }
+
+    private static class InternalDecimalFormatWithScale extends Format {
+
+        private static final Pattern endsWithCommas = Pattern.compile("(,+)$");
+        private BigDecimal divider;
+        private static final BigDecimal ONE_THOUSAND = new BigDecimal(1000);
+        private final DecimalFormat df;
+
+        private static String trimTrailingCommas(String s) {
+            return s.replaceAll(",+$", "");
+        }
+
+        public InternalDecimalFormatWithScale(String pattern, DecimalFormatSymbols symbols) {
+            df = new DecimalFormat(trimTrailingCommas(pattern), symbols);
+            setExcelStyleRoundingMode(df);
+            Matcher endsWithCommasMatcher = endsWithCommas.matcher(pattern);
+            if (endsWithCommasMatcher.find()) {
+                String commas = (endsWithCommasMatcher.group(1));
+                BigDecimal temp = BigDecimal.ONE;
+                for (int i = 0; i < commas.length(); ++i) {
+                    temp = temp.multiply(ONE_THOUSAND);
+                }
+                divider = temp;
+            } else {
+                divider = null;
+            }
+        }
+
+        private Object scaleInput(Object obj) {
+            if (divider != null) {
+                if (obj instanceof BigDecimal) {
+                    obj = ((BigDecimal)obj).divide(divider, RoundingMode.HALF_UP);
+                } else if (obj instanceof Double) {
+                    obj = (Double)obj / divider.doubleValue();
+                } else {
+                    throw new UnsupportedOperationException();
+                }
+            }
+            return obj;
+        }
+
+        @Override
+        public StringBuffer format(Object obj, StringBuffer toAppendTo, FieldPosition pos) {
+            obj = scaleInput(obj);
+            return df.format(obj, toAppendTo, pos);
+        }
+
+        @Override
+        public Object parseObject(String source, ParsePosition pos) {
+            throw new UnsupportedOperationException();
+        }
+    }
+
+    private Format createNumberFormat(String formatStr) {
+        String format = cleanFormatForNumber(formatStr);
+        DecimalFormatSymbols symbols = decimalSymbols;
+
+        // Do we need to change the grouping character?
+        // eg for a format like #'##0 which wants 12'345 not 12,345
+        Matcher agm = alternateGrouping.matcher(format);
+        if (agm.find()) {
+            char grouping = agm.group(2).charAt(0);
+            // Only replace the grouping character if it is not the default
+            // grouping character for the US locale (',') in order to enable
+            // correct grouping for non-US locales.
+            if (grouping != ',') {
+                symbols = DecimalFormatSymbols.getInstance(locale);
+
+                symbols.setGroupingSeparator(grouping);
+                String oldPart = agm.group(1);
+                String newPart = oldPart.replace(grouping, ',');
+                format = format.replace(oldPart, newPart);
+            }
+        }
+
+        try {
+            return new InternalDecimalFormatWithScale(format, symbols);
+        } catch (IllegalArgumentException iae) {
+            LOGGER.debug("Formatting failed for format {}, falling back", formatStr, iae);
+            // the pattern could not be parsed correctly,
+            // so fall back to the default number format
+            return getDefaultFormat();
+        }
+    }
+
+    private Format getDefaultFormat() {
+        // for numeric cells try user supplied default
+        if (defaultNumFormat != null) {
+            return defaultNumFormat;
+            // otherwise use general format
+        }
+        defaultNumFormat = new ExcelGeneralNumberFormat(locale);
+        return defaultNumFormat;
+    }
+
+    /**
+     * Performs Excel-style date formatting, using the supplied Date and format
+     */
+    private String performDateFormatting(Date d, Format dateFormat) {
+        Format df = dateFormat != null ? dateFormat : getDefaultFormat();
+        return df.format(d);
+    }
+
+    /**
+     * Returns the formatted value of an Excel date as a <tt>String</tt> based on the cell's <code>DataFormat</code>.
+     * i.e. "Thursday, January 02, 2003" , "01/02/2003" , "02-Jan" , etc.
+     * <p>
+     * If any conditional format rules apply, the highest priority with a number format is used. If no rules contain a
+     * number format, or no rules apply, the cell's style format is used. If the style does not have a format, the
+     * default date format is applied.
+     *
+     * @param data
+     *            to format
+     * @param dataFormat
+     * @param dataFormatString
+     * @return Formatted value
+     */
+    private String getFormattedDateString(Double data, Integer dataFormat, String dataFormatString) {
+        Format dateFormat = getFormat(dataFormat, dataFormatString);
+        if (dateFormat instanceof ExcelStyleDateFormatter) {
+            // Hint about the raw excel value
+            ((ExcelStyleDateFormatter)dateFormat).setDateToBeFormatted(data);
+        }
+        return performDateFormatting(DateUtil.getJavaDate(data, use1904windowing), dateFormat);
+    }
+
+    /**
+     * Returns the formatted value of an Excel number as a <tt>String</tt> based on the cell's <code>DataFormat</code>.
+     * Supported formats include currency, percents, decimals, phone number, SSN, etc.: "61.54%", "$100.00", "(800)
+     * 555-1234".
+     * <p>
+     * Format comes from either the highest priority conditional format rule with a specified format, or from the cell
+     * style.
+     *
+     * @param data
+     *            to format
+     * @param dataFormat
+     * @param dataFormatString
+     * @return a formatted number string
+     */
+    private String getFormattedNumberString(Double data, Integer dataFormat, String dataFormatString) {
+        Format numberFormat = getFormat(dataFormat, dataFormatString);
+        String formatted = numberFormat.format(data);
+        return formatted.replaceFirst("E(\\d)", "E+$1"); // to match Excel's E-notation
+    }
+
+    /**
+     * Format data.
+     *
+     * @param data
+     * @param dataFormat
+     * @param dataFormatString
+     * @return
+     */
+    public String format(Double data, Integer dataFormat, String dataFormatString) {
+        if (DateUtils.isADateFormat(dataFormat, dataFormatString)) {
+            return getFormattedDateString(data, dataFormat, dataFormatString);
+        }
+        return getFormattedNumberString(data, dataFormat, dataFormatString);
+    }
+
+    /**
+     * <p>
+     * Sets a default number format to be used when the Excel format cannot be parsed successfully. <b>Note:</b> This is
+     * a fall back for when an error occurs while parsing an Excel number format pattern. This will not affect cells
+     * with the <em>General</em> format.
+     * </p>
+     * <p>
+     * The value that will be passed to the Format's format method (specified by <code>java.text.Format#format</code>)
+     * will be a double value from a numeric cell. Therefore the code in the format method should expect a
+     * <code>Number</code> value.
+     * </p>
+     *
+     * @param format
+     *            A Format instance to be used as a default
+     * @see Format#format
+     */
+    public void setDefaultNumberFormat(Format format) {
+        for (Map.Entry<String, Format> entry : formats.entrySet()) {
+            if (entry.getValue() == defaultNumFormat) {
+                entry.setValue(format);
+            }
+        }
+        defaultNumFormat = format;
+    }
+
+    /**
+     * Adds a new format to the available formats.
+     * <p>
+     * The value that will be passed to the Format's format method (specified by <code>java.text.Format#format</code>)
+     * will be a double value from a numeric cell. Therefore the code in the format method should expect a
+     * <code>Number</code> value.
+     * </p>
+     *
+     * @param excelFormatStr
+     *            The data format string
+     * @param format
+     *            A Format instance
+     */
+    public void addFormat(String excelFormatStr, Format format) {
+        formats.put(excelFormatStr, format);
+    }
+
+    // Some custom formats
+
+    /**
+     * @return a <tt>DecimalFormat</tt> with parseIntegerOnly set <code>true</code>
+     */
+    private static DecimalFormat createIntegerOnlyFormat(String fmt) {
+        DecimalFormatSymbols dsf = DecimalFormatSymbols.getInstance(Locale.ROOT);
+        DecimalFormat result = new DecimalFormat(fmt, dsf);
+        result.setParseIntegerOnly(true);
+        return result;
+    }
+
+    /**
+     * Enables excel style rounding mode (round half up) on the Decimal Format given.
+     */
+    public static void setExcelStyleRoundingMode(DecimalFormat format) {
+        setExcelStyleRoundingMode(format, RoundingMode.HALF_UP);
+    }
+
+    /**
+     * Enables custom rounding mode on the given Decimal Format.
+     *
+     * @param format
+     *            DecimalFormat
+     * @param roundingMode
+     *            RoundingMode
+     */
+    public static void setExcelStyleRoundingMode(DecimalFormat format, RoundingMode roundingMode) {
+        format.setRoundingMode(roundingMode);
+    }
+
+    /**
+     * Format class for Excel's SSN format. This class mimics Excel's built-in SSN formatting.
+     *
+     * @author James May
+     */
+    @SuppressWarnings("serial")
+    private static final class SSNFormat extends Format {
+        private static final DecimalFormat df = createIntegerOnlyFormat("000000000");
+
+        private SSNFormat() {
+            // enforce singleton
+        }
+
+        /** Format a number as an SSN */
+        public static String format(Number num) {
+            String result = df.format(num);
+            return result.substring(0, 3) + '-' + result.substring(3, 5) + '-' + result.substring(5, 9);
+        }
+
+        @Override
+        public StringBuffer format(Object obj, StringBuffer toAppendTo, FieldPosition pos) {
+            return toAppendTo.append(format((Number)obj));
+        }
+
+        @Override
+        public Object parseObject(String source, ParsePosition pos) {
+            return df.parseObject(source, pos);
+        }
+    }
+
+    /**
+     * Format class for Excel Zip + 4 format. This class mimics Excel's built-in formatting for Zip + 4.
+     *
+     * @author James May
+     */
+    @SuppressWarnings("serial")
+    private static final class ZipPlusFourFormat extends Format {
+        private static final DecimalFormat df = createIntegerOnlyFormat("000000000");
+
+        private ZipPlusFourFormat() {
+            // enforce singleton
+        }
+
+        /** Format a number as Zip + 4 */
+        public static String format(Number num) {
+            String result = df.format(num);
+            return result.substring(0, 5) + '-' + result.substring(5, 9);
+        }
+
+        @Override
+        public StringBuffer format(Object obj, StringBuffer toAppendTo, FieldPosition pos) {
+            return toAppendTo.append(format((Number)obj));
+        }
+
+        @Override
+        public Object parseObject(String source, ParsePosition pos) {
+            return df.parseObject(source, pos);
+        }
+    }
+
+    /**
+     * Format class for Excel phone number format. This class mimics Excel's built-in phone number formatting.
+     *
+     * @author James May
+     */
+    @SuppressWarnings("serial")
+    private static final class PhoneFormat extends Format {
+        private static final DecimalFormat df = createIntegerOnlyFormat("##########");
+
+        private PhoneFormat() {
+            // enforce singleton
+        }
+
+        /** Format a number as a phone number */
+        public static String format(Number num) {
+            String result = df.format(num);
+            StringBuilder sb = new StringBuilder();
+            String seg1, seg2, seg3;
+            int len = result.length();
+            if (len <= 4) {
+                return result;
+            }
+
+            seg3 = result.substring(len - 4, len);
+            seg2 = result.substring(Math.max(0, len - 7), len - 4);
+            seg1 = result.substring(Math.max(0, len - 10), Math.max(0, len - 7));
+
+            if (seg1.trim().length() > 0) {
+                sb.append('(').append(seg1).append(") ");
+            }
+            if (seg2.trim().length() > 0) {
+                sb.append(seg2).append('-');
+            }
+            sb.append(seg3);
+            return sb.toString();
+        }
+
+        @Override
+        public StringBuffer format(Object obj, StringBuffer toAppendTo, FieldPosition pos) {
+            return toAppendTo.append(format((Number)obj));
+        }
+
+        @Override
+        public Object parseObject(String source, ParsePosition pos) {
+            return df.parseObject(source, pos);
+        }
+    }
+
+}

src/main/java/com/alibaba/excel/metadata/GlobalConfiguration.java

@@ -1,5 +1,7 @@
 package com.alibaba.excel.metadata;
 
+import java.util.Locale;
+
 /**
  * Global configuration
  *
@@ -18,6 +20,11 @@ public class GlobalConfiguration {
      * @return
      */
     private Boolean use1904windowing;
+    /**
+     * A <code>Locale</code> object represents a specific geographical, political, or cultural region. This parameter is
+     * used when formatting dates and numbers.
+     */
+    private Locale locale;
 
     public Boolean getUse1904windowing() {
         return use1904windowing;
@@ -34,4 +41,12 @@ public class GlobalConfiguration {
     public void setAutoTrim(Boolean autoTrim) {
         this.autoTrim = autoTrim;
     }
+
+    public Locale getLocale() {
+        return locale;
+    }
+
+    public void setLocale(Locale locale) {
+        this.locale = locale;
+    }
 }

src/main/java/com/alibaba/excel/metadata/property/ExcelHeadProperty.java

@@ -17,14 +17,16 @@ import com.alibaba.excel.annotation.ExcelIgnoreUnannotated;
 import com.alibaba.excel.annotation.ExcelProperty;
 import com.alibaba.excel.annotation.format.DateTimeFormat;
 import com.alibaba.excel.annotation.format.NumberFormat;
-import com.alibaba.excel.annotation.write.style.ColumnWidth;
 import com.alibaba.excel.converters.AutoConverter;
 import com.alibaba.excel.converters.Converter;
 import com.alibaba.excel.enums.HeadKindEnum;
 import com.alibaba.excel.exception.ExcelCommonException;
 import com.alibaba.excel.exception.ExcelGenerateException;
 import com.alibaba.excel.metadata.Head;
+import com.alibaba.excel.metadata.Holder;
+import com.alibaba.excel.util.ClassUtils;
 import com.alibaba.excel.util.StringUtils;
+import com.alibaba.excel.write.metadata.holder.AbstractWriteHolder;
 
 /**
  * Define the header attribute of excel
@@ -46,7 +48,6 @@ public class ExcelHeadProperty {
      * The number of rows in the line with the most rows
      */
     private int headRowNumber;
-
     /**
      * Configuration header information
      */
@@ -64,7 +65,7 @@ public class ExcelHeadProperty {
      */
     private Map<String, Field> ignoreMap;
 
-    public ExcelHeadProperty(Class headClazz, List<List<String>> head, Boolean convertAllFiled) {
+    public ExcelHeadProperty(Holder holder, Class headClazz, List<List<String>> head, Boolean convertAllFiled) {
         this.headClazz = headClazz;
         headMap = new TreeMap<Integer, Head>();
         contentPropertyMap = new TreeMap<Integer, ExcelContentProperty>();
@@ -73,14 +74,21 @@ public class ExcelHeadProperty {
         headKind = HeadKindEnum.NONE;
         headRowNumber = 0;
         if (head != null && !head.isEmpty()) {
+            int headIndex = 0;
             for (int i = 0; i < head.size(); i++) {
-                headMap.put(i, new Head(i, null, head.get(i), Boolean.FALSE, Boolean.TRUE));
-                contentPropertyMap.put(i, null);
+                if (holder instanceof AbstractWriteHolder) {
+                    if (((AbstractWriteHolder)holder).ignore(null, i)) {
+                        continue;
+                    }
+                }
+                headMap.put(headIndex, new Head(headIndex, null, head.get(i), Boolean.FALSE, Boolean.TRUE));
+                contentPropertyMap.put(headIndex, null);
+                headIndex++;
             }
             headKind = HeadKindEnum.STRING;
         } else {
             // convert headClazz to head
-            initColumnProperties(convertAllFiled);
+            initColumnProperties(holder, convertAllFiled);
         }
         initHeadRowNumber();
         if (LOGGER.isDebugEnabled()) {
@@ -108,73 +116,49 @@ public class ExcelHeadProperty {
         }
     }
 
-    private void initColumnProperties(Boolean convertAllFiled) {
+    private void initColumnProperties(Holder holder, Boolean convertAllFiled) {
         if (headClazz == null) {
             return;
         }
-        List<Field> fieldList = new ArrayList<Field>();
-        Class tempClass = headClazz;
-        // When the parent class is null, it indicates that the parent class (Object class) has reached the top
-        // level.
-        while (tempClass != null) {
-            Collections.addAll(fieldList, tempClass.getDeclaredFields());
-            // Get the parent class and give it to yourself
-            tempClass = tempClass.getSuperclass();
-        }
-
-        ExcelIgnoreUnannotated excelIgnoreUnannotated =
-            (ExcelIgnoreUnannotated)headClazz.getAnnotation(ExcelIgnoreUnannotated.class);
-        // Screening of field
+        // Declared fields
         List<Field> defaultFieldList = new ArrayList<Field>();
         Map<Integer, Field> customFiledMap = new TreeMap<Integer, Field>();
-        for (Field field : fieldList) {
-            ExcelIgnore excelIgnore = field.getAnnotation(ExcelIgnore.class);
-            if (excelIgnore != null) {
-                ignoreMap.put(field.getName(), field);
-                continue;
-            }
-            ExcelProperty excelProperty = field.getAnnotation(ExcelProperty.class);
-            boolean noExcelProperty = excelProperty == null
-                && ((convertAllFiled != null && !convertAllFiled) || excelIgnoreUnannotated != null);
-            if (noExcelProperty) {
-                ignoreMap.put(field.getName(), field);
-                continue;
-            }
-            boolean isStaticFinalOrTransient =
-                (Modifier.isStatic(field.getModifiers()) && Modifier.isFinal(field.getModifiers()))
-                    || Modifier.isTransient(field.getModifiers());
-            if (excelProperty == null && isStaticFinalOrTransient) {
-                ignoreMap.put(field.getName(), field);
-                continue;
-            }
-            if (excelProperty == null || excelProperty.index() < 0) {
-                defaultFieldList.add(field);
-                continue;
-            }
-            if (customFiledMap.containsKey(excelProperty.index())) {
-                throw new ExcelGenerateException("The index of '" + customFiledMap.get(excelProperty.index()).getName()
-                    + "' and '" + field.getName() + "' must be inconsistent");
-            }
-            customFiledMap.put(excelProperty.index(), field);
-        }
+        ClassUtils.declaredFields(headClazz, defaultFieldList, customFiledMap, ignoreMap, convertAllFiled);
 
         int index = 0;
         for (Field field : defaultFieldList) {
             while (customFiledMap.containsKey(index)) {
-                initOneColumnProperty(index, customFiledMap.get(index), Boolean.TRUE);
+                Field customFiled = customFiledMap.get(index);
                 customFiledMap.remove(index);
+                if (!initOneColumnProperty(holder, index, customFiled, Boolean.TRUE)) {
+                    index++;
+                }
+            }
+            if (!initOneColumnProperty(holder, index, field, Boolean.FALSE)) {
                 index++;
             }
-            initOneColumnProperty(index, field, Boolean.FALSE);
-            index++;
         }
         for (Map.Entry<Integer, Field> entry : customFiledMap.entrySet()) {
-            initOneColumnProperty(entry.getKey(), entry.getValue(), Boolean.TRUE);
+            initOneColumnProperty(holder, entry.getKey(), entry.getValue(), Boolean.TRUE);
         }
         headKind = HeadKindEnum.CLASS;
     }
 
-    private void initOneColumnProperty(int index, Field field, Boolean forceIndex) {
+    /**
+     * Initialization column property
+     *
+     * @param holder
+     * @param index
+     * @param field
+     * @param forceIndex
+     * @return Ignore current field
+     */
+    private boolean initOneColumnProperty(Holder holder, int index, Field field, Boolean forceIndex) {
+        if (holder instanceof AbstractWriteHolder) {
+            if (((AbstractWriteHolder)holder).ignore(field.getName(), index)) {
+                return true;
+            }
+        }
         ExcelProperty excelProperty = field.getAnnotation(ExcelProperty.class);
         List<String> tmpHeadList = new ArrayList<String>();
         boolean notForceName = excelProperty == null || excelProperty.value().length <= 0
@@ -206,6 +190,7 @@ public class ExcelHeadProperty {
         headMap.put(index, head);
         contentPropertyMap.put(index, excelContentProperty);
         fieldNameContentPropertyMap.put(field.getName(), excelContentProperty);
+        return false;
     }
 
     public Class getHeadClazz() {

src/main/java/com/alibaba/excel/read/builder/AbstractExcelReaderParameterBuilder.java

@@ -0,0 +1,47 @@
+package com.alibaba.excel.read.builder;
+
+import java.util.ArrayList;
+
+import com.alibaba.excel.metadata.AbstractParameterBuilder;
+import com.alibaba.excel.read.listener.ReadListener;
+import com.alibaba.excel.read.metadata.ReadBasicParameter;
+
+/**
+ * Build ExcelBuilder
+ *
+ * @author Jiaju Zhuang
+ */
+public abstract class AbstractExcelReaderParameterBuilder<T extends AbstractExcelReaderParameterBuilder,
+    C extends ReadBasicParameter> extends AbstractParameterBuilder<T, C> {
+    /**
+     * Count the number of added heads when read sheet.
+     *
+     * <p>
+     * 0 - This Sheet has no head ,since the first row are the data
+     * <p>
+     * 1 - This Sheet has one row head , this is the default
+     * <p>
+     * 2 - This Sheet has two row head ,since the third row is the data
+     *
+     * @param headRowNumber
+     * @return
+     */
+    public T headRowNumber(Integer headRowNumber) {
+        parameter().setHeadRowNumber(headRowNumber);
+        return self();
+    }
+
+    /**
+     * Custom type listener run after default
+     *
+     * @param readListener
+     * @return
+     */
+    public T registerReadListener(ReadListener readListener) {
+        if (parameter().getCustomReadListenerList() == null) {
+            parameter().setCustomReadListenerList(new ArrayList<ReadListener>());
+        }
+        parameter().getCustomReadListenerList().add(readListener);
+        return self();
+    }
+}

src/main/java/com/alibaba/excel/read/builder/ExcelReaderBuilder.java

@@ -2,15 +2,15 @@ package com.alibaba.excel.read.builder;
 
 import java.io.File;
 import java.io.InputStream;
-import java.util.ArrayList;
-import java.util.List;
+
+import javax.xml.parsers.SAXParserFactory;
 
 import com.alibaba.excel.ExcelReader;
 import com.alibaba.excel.cache.ReadCache;
 import com.alibaba.excel.cache.selector.ReadCacheSelector;
 import com.alibaba.excel.context.AnalysisContext;
-import com.alibaba.excel.converters.Converter;
 import com.alibaba.excel.event.AnalysisEventListener;
+import com.alibaba.excel.read.listener.ModelBuildEventListener;
 import com.alibaba.excel.read.listener.ReadListener;
 import com.alibaba.excel.read.metadata.ReadWorkbook;
 import com.alibaba.excel.support.ExcelTypeEnum;
@@ -20,7 +20,7 @@ import com.alibaba.excel.support.ExcelTypeEnum;
  *
  * @author Jiaju Zhuang
  */
-public class ExcelReaderBuilder {
+public class ExcelReaderBuilder extends AbstractExcelReaderParameterBuilder<ExcelReaderBuilder, ReadWorkbook> {
     /**
      * Workbook
      */
@@ -131,105 +131,43 @@ public class ExcelReaderBuilder {
     }
 
     /**
-     * Count the number of added heads when read sheet.
-     *
-     * <p>
-     * 0 - This Sheet has no head ,since the first row are the data
-     * <p>
-     * 1 - This Sheet has one row head , this is the default
-     * <p>
-     * 2 - This Sheet has two row head ,since the third row is the data
-     *
-     * @param headRowNumber
-     * @return
-     */
-    public ExcelReaderBuilder headRowNumber(Integer headRowNumber) {
-        readWorkbook.setHeadRowNumber(headRowNumber);
-        return this;
-    }
-
-    /**
-     * You can only choose one of the {@link ExcelReaderBuilder#head(List)} and {@link ExcelReaderBuilder#head(Class)}
-     *
-     * @param head
-     * @return
-     */
-    public ExcelReaderBuilder head(List<List<String>> head) {
-        readWorkbook.setHead(head);
-        return this;
-    }
-
-    /**
-     * You can only choose one of the {@link ExcelReaderBuilder#head(List)} and {@link ExcelReaderBuilder#head(Class)}
-     *
-     * @param clazz
-     * @return
-     */
-    public ExcelReaderBuilder head(Class clazz) {
-        readWorkbook.setClazz(clazz);
-        return this;
-    }
-
-    /**
-     * Custom type conversions override the default.
-     *
-     * @param converter
-     * @return
-     */
-    public ExcelReaderBuilder registerConverter(Converter converter) {
-        if (readWorkbook.getCustomConverterList() == null) {
-            readWorkbook.setCustomConverterList(new ArrayList<Converter>());
-        }
-        readWorkbook.getCustomConverterList().add(converter);
-        return this;
-    }
-
-    /**
-     * Custom type listener run after default
-     *
-     * @param readListener
-     * @return
-     */
-    public ExcelReaderBuilder registerReadListener(ReadListener readListener) {
-        if (readWorkbook.getCustomReadListenerList() == null) {
-            readWorkbook.setCustomReadListenerList(new ArrayList<ReadListener>());
-        }
-        readWorkbook.getCustomReadListenerList().add(readListener);
-        return this;
-    }
-
-    /**
-     * true if date uses 1904 windowing, or false if using 1900 date windowing.
-     *
-     * default is false
+     * Whether the encryption
      *
-     * @param use1904windowing
+     * @param password
      * @return
      */
-    public ExcelReaderBuilder use1904windowing(Boolean use1904windowing) {
-        readWorkbook.setUse1904windowing(use1904windowing);
+    public ExcelReaderBuilder password(String password) {
+        readWorkbook.setPassword(password);
         return this;
     }
 
     /**
-     * Automatic trim includes sheet name and content
+     * SAXParserFactory used when reading xlsx.
+     * <p>
+     * The default will automatically find.
+     * <p>
+     * Please pass in the name of a class ,like : "com.sun.org.apache.xerces.internal.jaxp.SAXParserFactoryImpl"
      *
-     * @param autoTrim
+     * @see SAXParserFactory#newInstance()
+     * @see SAXParserFactory#newInstance(String, ClassLoader)
+     * @param xlsxSAXParserFactoryName
      * @return
      */
-    public ExcelReaderBuilder autoTrim(Boolean autoTrim) {
-        readWorkbook.setAutoTrim(autoTrim);
+    public ExcelReaderBuilder xlsxSAXParserFactoryName(String xlsxSAXParserFactoryName) {
+        readWorkbook.setXlsxSAXParserFactoryName(xlsxSAXParserFactoryName);
         return this;
     }
 
     /**
-     * Whether the encryption
+     * Whether to use the default listener, which is used by default.
+     * <p>
+     * The {@link ModelBuildEventListener} is loaded by default to convert the object.
      *
-     * @param password
+     * @param useDefaultListener
      * @return
      */
-    public ExcelReaderBuilder password(String password) {
-        readWorkbook.setPassword(password);
+    public ExcelReaderBuilder useDefaultListener(Boolean useDefaultListener) {
+        readWorkbook.setUseDefaultListener(useDefaultListener);
         return this;
     }
 
@@ -266,4 +204,9 @@ public class ExcelReaderBuilder {
         }
         return excelReaderSheetBuilder;
     }
+
+    @Override
+    protected ReadWorkbook parameter() {
+        return readWorkbook;
+    }
 }

src/main/java/com/alibaba/excel/read/builder/ExcelReaderSheetBuilder.java

@@ -1,14 +1,11 @@
 package com.alibaba.excel.read.builder;
 
-import java.util.ArrayList;
 import java.util.List;
 
 import com.alibaba.excel.ExcelReader;
-import com.alibaba.excel.converters.Converter;
 import com.alibaba.excel.event.SyncReadListener;
 import com.alibaba.excel.exception.ExcelAnalysisException;
 import com.alibaba.excel.exception.ExcelGenerateException;
-import com.alibaba.excel.read.listener.ReadListener;
 import com.alibaba.excel.read.metadata.ReadSheet;
 
 /**
@@ -16,7 +13,7 @@ import com.alibaba.excel.read.metadata.ReadSheet;
  *
  * @author Jiaju Zhuang
  */
-public class ExcelReaderSheetBuilder {
+public class ExcelReaderSheetBuilder extends AbstractExcelReaderParameterBuilder<ExcelReaderSheetBuilder, ReadSheet> {
     private ExcelReader excelReader;
     /**
      * Sheet
@@ -54,98 +51,6 @@ public class ExcelReaderSheetBuilder {
         return this;
     }
 
-    /**
-     * Count the number of added heads when read sheet.
-     *
-     * <p>
-     * 0 - This Sheet has no head ,since the first row are the data
-     * <p>
-     * 1 - This Sheet has one row head , this is the default
-     * <p>
-     * 2 - This Sheet has two row head ,since the third row is the data
-     *
-     * @param headRowNumber
-     * @return
-     */
-    public ExcelReaderSheetBuilder headRowNumber(Integer headRowNumber) {
-        readSheet.setHeadRowNumber(headRowNumber);
-        return this;
-    }
-
-    /**
-     * You can only choose one of the {@link ExcelReaderBuilder#head(List)} and {@link ExcelReaderBuilder#head(Class)}
-     *
-     * @param head
-     * @return
-     */
-    public ExcelReaderSheetBuilder head(List<List<String>> head) {
-        readSheet.setHead(head);
-        return this;
-    }
-
-    /**
-     * You can only choose one of the {@link ExcelReaderBuilder#head(List)} and {@link ExcelReaderBuilder#head(Class)}
-     *
-     * @param clazz
-     * @return
-     */
-    public ExcelReaderSheetBuilder head(Class clazz) {
-        readSheet.setClazz(clazz);
-        return this;
-    }
-
-    /**
-     * Custom type conversions override the default.
-     *
-     * @param converter
-     * @return
-     */
-    public ExcelReaderSheetBuilder registerConverter(Converter converter) {
-        if (readSheet.getCustomConverterList() == null) {
-            readSheet.setCustomConverterList(new ArrayList<Converter>());
-        }
-        readSheet.getCustomConverterList().add(converter);
-        return this;
-    }
-
-    /**
-     * Custom type listener run after default
-     *
-     * @param readListener
-     * @return
-     */
-    public ExcelReaderSheetBuilder registerReadListener(ReadListener readListener) {
-        if (readSheet.getCustomReadListenerList() == null) {
-            readSheet.setCustomReadListenerList(new ArrayList<ReadListener>());
-        }
-        readSheet.getCustomReadListenerList().add(readListener);
-        return this;
-    }
-
-    /**
-     * true if date uses 1904 windowing, or false if using 1900 date windowing.
-     *
-     * default is false
-     *
-     * @param use1904windowing
-     * @return
-     */
-    public ExcelReaderSheetBuilder use1904windowing(Boolean use1904windowing) {
-        readSheet.setUse1904windowing(use1904windowing);
-        return this;
-    }
-
-    /**
-     * Automatic trim includes sheet name and content
-     *
-     * @param autoTrim
-     * @return
-     */
-    public ExcelReaderSheetBuilder autoTrim(Boolean autoTrim) {
-        readSheet.setAutoTrim(autoTrim);
-        return this;
-    }
-
     public ReadSheet build() {
         return readSheet;
     }
@@ -166,7 +71,7 @@ public class ExcelReaderSheetBuilder {
      *
      * @return
      */
-    public List<Object> doReadSync() {
+    public <T> List<T> doReadSync() {
         if (excelReader == null) {
             throw new ExcelAnalysisException("Must use 'EasyExcelFactory.read().sheet()' to call this method");
         }
@@ -174,7 +79,11 @@ public class ExcelReaderSheetBuilder {
         registerReadListener(syncReadListener);
         excelReader.read(build());
         excelReader.finish();
-        return syncReadListener.getList();
+        return (List<T>)syncReadListener.getList();
     }
 
+    @Override
+    protected ReadSheet parameter() {
+        return readSheet;
+    }
 }

src/main/java/com/alibaba/excel/read/listener/ModelBuildEventListener.java

@@ -2,6 +2,7 @@ package com.alibaba.excel.read.listener;
 
 import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
 
@@ -44,7 +45,7 @@ public class ModelBuildEventListener extends AbstractIgnoreExceptionReadListener
         AnalysisContext context) {
         int index = 0;
         if (context.readWorkbookHolder().getDefaultReturnMap()) {
-            Map<Integer, String> map = new HashMap<Integer, String>(cellDataMap.size() * 4 / 3 + 1);
+            Map<Integer, String> map = new LinkedHashMap<Integer, String>(cellDataMap.size() * 4 / 3 + 1);
             for (Map.Entry<Integer, CellData> entry : cellDataMap.entrySet()) {
                 Integer key = entry.getKey();
                 CellData cellData = entry.getValue();
@@ -92,7 +93,8 @@ public class ModelBuildEventListener extends AbstractIgnoreExceptionReadListener
         try {
             resultModel = excelReadHeadProperty.getHeadClazz().newInstance();
         } catch (Exception e) {
-            throw new ExcelDataConvertException(
+            throw new ExcelDataConvertException(context.readRowHolder().getRowIndex(), 0,
+                new CellData(CellDataTypeEnum.EMPTY), null,
                 "Can not instance class: " + excelReadHeadProperty.getHeadClazz().getName(), e);
         }
         Map<Integer, Head> headMap = excelReadHeadProperty.getHeadMap();

src/main/java/com/alibaba/excel/read/metadata/ReadWorkbook.java

@@ -3,10 +3,13 @@ package com.alibaba.excel.read.metadata;
 import java.io.File;
 import java.io.InputStream;
 
+import javax.xml.parsers.SAXParserFactory;
+
 import com.alibaba.excel.cache.ReadCache;
 import com.alibaba.excel.cache.selector.ReadCacheSelector;
 import com.alibaba.excel.context.AnalysisContext;
 import com.alibaba.excel.event.AnalysisEventListener;
+import com.alibaba.excel.read.listener.ModelBuildEventListener;
 import com.alibaba.excel.support.ExcelTypeEnum;
 
 /**
@@ -63,6 +66,23 @@ public class ReadWorkbook extends ReadBasicParameter {
      * Whether the encryption
      */
     private String password;
+    /**
+     * SAXParserFactory used when reading xlsx.
+     * <p>
+     * The default will automatically find.
+     * <p>
+     * Please pass in the name of a class ,like : "com.sun.org.apache.xerces.internal.jaxp.SAXParserFactoryImpl"
+     *
+     * @see SAXParserFactory#newInstance()
+     * @see SAXParserFactory#newInstance(String, ClassLoader)
+     */
+    private String xlsxSAXParserFactoryName;
+    /**
+     * Whether to use the default listener, which is used by default.
+     * <p>
+     * The {@link ModelBuildEventListener} is loaded by default to convert the object.
+     */
+    private Boolean useDefaultListener;
     /**
      * The default is all excel objects.Default is true.
      * <p>
@@ -176,4 +196,20 @@ public class ReadWorkbook extends ReadBasicParameter {
     public void setPassword(String password) {
         this.password = password;
     }
+
+    public String getXlsxSAXParserFactoryName() {
+        return xlsxSAXParserFactoryName;
+    }
+
+    public void setXlsxSAXParserFactoryName(String xlsxSAXParserFactoryName) {
+        this.xlsxSAXParserFactoryName = xlsxSAXParserFactoryName;
+    }
+
+    public Boolean getUseDefaultListener() {
+        return useDefaultListener;
+    }
+
+    public void setUseDefaultListener(Boolean useDefaultListener) {
+        this.useDefaultListener = useDefaultListener;
+    }
 }

src/main/java/com/alibaba/excel/read/metadata/holder/AbstractReadHolder.java

@@ -26,6 +26,7 @@ import com.alibaba.excel.read.listener.ReadListener;
 import com.alibaba.excel.read.listener.ReadListenerRegistryCenter;
 import com.alibaba.excel.read.listener.event.AnalysisFinishEvent;
 import com.alibaba.excel.read.metadata.ReadBasicParameter;
+import com.alibaba.excel.read.metadata.ReadWorkbook;
 import com.alibaba.excel.read.metadata.property.ExcelReadHeadProperty;
 import com.alibaba.excel.util.CollectionUtils;
 import com.alibaba.excel.util.ConverterUtils;
@@ -70,7 +71,7 @@ public abstract class AbstractReadHolder extends AbstractHolder implements ReadH
         }
 
         // Initialization property
-        this.excelReadHeadProperty = new ExcelReadHeadProperty(getClazz(), getHead(), convertAllFiled);
+        this.excelReadHeadProperty = new ExcelReadHeadProperty(this, getClazz(), getHead(), convertAllFiled);
         if (readBasicParameter.getHeadRowNumber() == null) {
             if (parentAbstractReadHolder == null) {
                 if (excelReadHeadProperty.hasHead()) {
@@ -91,7 +92,10 @@ public abstract class AbstractReadHolder extends AbstractHolder implements ReadH
             this.readListenerList = new ArrayList<ReadListener>(parentAbstractReadHolder.getReadListenerList());
         }
         if (HolderEnum.WORKBOOK.equals(holderType())) {
-            readListenerList.add(new ModelBuildEventListener());
+            Boolean useDefaultListener = ((ReadWorkbook)readBasicParameter).getUseDefaultListener();
+            if (useDefaultListener == null || useDefaultListener) {
+                readListenerList.add(new ModelBuildEventListener());
+            }
         }
         if (readBasicParameter.getCustomReadListenerList() != null
             && !readBasicParameter.getCustomReadListenerList().isEmpty()) {
@@ -144,7 +148,7 @@ public abstract class AbstractReadHolder extends AbstractHolder implements ReadH
                         try {
                             readListenerException.onException(e, analysisContext);
                         } catch (Exception exception) {
-                            throw new ExcelAnalysisException("Listen error!", exception);
+                            throw new ExcelAnalysisException(exception.getMessage(), exception);
                         }
                     }
                     break;
@@ -158,7 +162,6 @@ public abstract class AbstractReadHolder extends AbstractHolder implements ReadH
             if (currentheadRowNumber == rowIndex + 1) {
                 buildHead(analysisContext, cellDataMap);
             }
-
             // Now is header
             for (ReadListener readListener : analysisContext.currentReadHolder().readListenerList()) {
                 try {
@@ -168,7 +171,7 @@ public abstract class AbstractReadHolder extends AbstractHolder implements ReadH
                         try {
                             readListenerException.onException(e, analysisContext);
                         } catch (Exception exception) {
-                            throw new ExcelAnalysisException("Listen error!", exception);
+                            throw new ExcelAnalysisException(exception.getMessage(), exception);
                         }
                     }
                     break;
@@ -191,8 +194,7 @@ public abstract class AbstractReadHolder extends AbstractHolder implements ReadH
         if (!HeadKindEnum.CLASS.equals(analysisContext.currentReadHolder().excelReadHeadProperty().getHeadKind())) {
             return;
         }
-        Map<Integer, String> dataMap =
-            ConverterUtils.convertToStringMap(cellDataMap, analysisContext.currentReadHolder());
+        Map<Integer, String> dataMap = ConverterUtils.convertToStringMap(cellDataMap, analysisContext);
         ExcelReadHeadProperty excelHeadPropertyData = analysisContext.readSheetHolder().excelReadHeadProperty();
         Map<Integer, Head> headMapData = excelHeadPropertyData.getHeadMap();
         Map<Integer, ExcelContentProperty> contentPropertyMapData = excelHeadPropertyData.getContentPropertyMap();
@@ -206,9 +208,12 @@ public abstract class AbstractReadHolder extends AbstractHolder implements ReadH
                 tmpContentPropertyMap.put(entry.getKey(), contentPropertyMapData.get(entry.getKey()));
                 continue;
             }
-            String headName = headData.getHeadNameList().get(0);
-
+            List<String> headNameList = headData.getHeadNameList();
+            String headName = headNameList.get(headNameList.size() - 1);
             for (Map.Entry<Integer, String> stringEntry : dataMap.entrySet()) {
+                if (stringEntry == null) {
+                    continue;
+                }
                 String headString = stringEntry.getValue();
                 Integer stringKey = stringEntry.getKey();
                 if (StringUtils.isEmpty(headString)) {

src/main/java/com/alibaba/excel/read/metadata/holder/ReadSheetHolder.java

@@ -26,10 +26,9 @@ public class ReadSheetHolder extends AbstractReadHolder {
      */
     private String sheetName;
     /**
-     * get total row , Data may be inaccurate
+     * Gets the total number of rows , data may be inaccurate
      */
-    @Deprecated
-    private Integer total;
+    private Integer approximateTotalRowNumber;
 
     public ReadSheetHolder(ReadSheet readSheet, ReadWorkbookHolder readWorkbookHolder) {
         super(readSheet, readWorkbookHolder, readWorkbookHolder.getReadWorkbook().getConvertAllFiled());
@@ -71,12 +70,29 @@ public class ReadSheetHolder extends AbstractReadHolder {
         this.sheetName = sheetName;
     }
 
+    /**
+     *
+     * Approximate total number of rows
+     *
+     * @return
+     * @see #getApproximateTotalRowNumber()
+     */
+    @Deprecated
     public Integer getTotal() {
-        return total;
+        return approximateTotalRowNumber;
+    }
+
+    /**
+     * Approximate total number of rows
+     *
+     * @return
+     */
+    public Integer getApproximateTotalRowNumber() {
+        return approximateTotalRowNumber;
     }
 
-    public void setTotal(Integer total) {
-        this.total = total;
+    public void setApproximateTotalRowNumber(Integer approximateTotalRowNumber) {
+        this.approximateTotalRowNumber = approximateTotalRowNumber;
     }
 
     @Override

src/main/java/com/alibaba/excel/read/metadata/holder/ReadWorkbookHolder.java

@@ -6,6 +6,8 @@ import java.io.InputStream;
 import java.util.HashSet;
 import java.util.Set;
 
+import javax.xml.parsers.SAXParserFactory;
+
 import org.apache.poi.openxml4j.opc.OPCPackage;
 import org.apache.poi.poifs.filesystem.POIFSFileSystem;
 
@@ -83,6 +85,17 @@ public class ReadWorkbookHolder extends AbstractReadHolder {
      * Whether the encryption
      */
     private String password;
+    /**
+     * SAXParserFactory used when reading xlsx.
+     * <p>
+     * The default will automatically find.
+     * <p>
+     * Please pass in the name of a class ,like : "com.sun.org.apache.xerces.internal.jaxp.SAXParserFactoryImpl"
+     *
+     * @see SAXParserFactory#newInstance()
+     * @see SAXParserFactory#newInstance(String, ClassLoader)
+     */
+    private String xlsxSAXParserFactoryName;
     /**
      * The default is all excel objects.if true , you can use {@link com.alibaba.excel.annotation.ExcelIgnore} ignore a
      * field. if false , you must use {@link com.alibaba.excel.annotation.ExcelProperty} to use a filed.
@@ -172,6 +185,7 @@ public class ReadWorkbookHolder extends AbstractReadHolder {
         } else {
             this.defaultReturnMap = readWorkbook.getDefaultReturnMap();
         }
+        this.xlsxSAXParserFactoryName = readWorkbook.getXlsxSAXParserFactoryName();
         this.hasReadSheet = new HashSet<Integer>();
         this.ignoreRecord03 = Boolean.FALSE;
         this.password = readWorkbook.getPassword();
@@ -321,6 +335,14 @@ public class ReadWorkbookHolder extends AbstractReadHolder {
         this.password = password;
     }
 
+    public String getXlsxSAXParserFactoryName() {
+        return xlsxSAXParserFactoryName;
+    }
+
+    public void setXlsxSAXParserFactoryName(String xlsxSAXParserFactoryName) {
+        this.xlsxSAXParserFactoryName = xlsxSAXParserFactoryName;
+    }
+
     @Override
     public HolderEnum holderType() {
         return HolderEnum.WORKBOOK;

src/main/java/com/alibaba/excel/read/metadata/property/ExcelReadHeadProperty.java

@@ -2,6 +2,7 @@ package com.alibaba.excel.read.metadata.property;
 
 import java.util.List;
 
+import com.alibaba.excel.metadata.Holder;
 import com.alibaba.excel.metadata.property.ExcelHeadProperty;
 
 /**
@@ -11,7 +12,7 @@ import com.alibaba.excel.metadata.property.ExcelHeadProperty;
  */
 public class ExcelReadHeadProperty extends ExcelHeadProperty {
 
-    public ExcelReadHeadProperty(Class headClazz, List<List<String>> head, Boolean convertAllFiled) {
-        super(headClazz, head, convertAllFiled);
+    public ExcelReadHeadProperty(Holder holder, Class headClazz, List<List<String>> head, Boolean convertAllFiled) {
+        super(holder, headClazz, head, convertAllFiled);
     }
 }

src/main/java/com/alibaba/excel/util/ClassUtils.java

@@ -0,0 +1,150 @@
+package com.alibaba.excel.util;
+
+import java.lang.ref.SoftReference;
+import java.lang.reflect.Field;
+import java.lang.reflect.Modifier;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.TreeMap;
+import java.util.concurrent.ConcurrentHashMap;
+
+import com.alibaba.excel.annotation.ExcelIgnore;
+import com.alibaba.excel.annotation.ExcelIgnoreUnannotated;
+import com.alibaba.excel.annotation.ExcelProperty;
+import com.alibaba.excel.exception.ExcelCommonException;
+import com.alibaba.excel.metadata.BaseRowModel;
+
+/**
+ * Class utils
+ *
+ * @author Jiaju Zhuang
+ **/
+public class ClassUtils {
+    private static final Map<Class, SoftReference<FieldCache>> FIELD_CACHE =
+        new ConcurrentHashMap<Class, SoftReference<FieldCache>>();
+
+    public static void declaredFields(Class clazz, List<Field> defaultFieldList, Map<Integer, Field> customFiledMap,
+        Map<String, Field> ignoreMap, Boolean convertAllFiled) {
+        FieldCache fieldCache = getFieldCache(clazz, convertAllFiled);
+        if (fieldCache != null) {
+            defaultFieldList.addAll(fieldCache.getDefaultFieldList());
+            customFiledMap.putAll(fieldCache.getCustomFiledMap());
+            ignoreMap.putAll(fieldCache.getIgnoreMap());
+        }
+    }
+
+    public static void declaredFields(Class clazz, List<Field> fieldList, Boolean convertAllFiled) {
+        FieldCache fieldCache = getFieldCache(clazz, convertAllFiled);
+        if (fieldCache != null) {
+            fieldList.addAll(fieldCache.getAllFieldList());
+        }
+    }
+
+    private static FieldCache getFieldCache(Class clazz, Boolean convertAllFiled) {
+        if (clazz == null) {
+            return null;
+        }
+        SoftReference<FieldCache> fieldCacheSoftReference = FIELD_CACHE.get(clazz);
+        if (fieldCacheSoftReference != null && fieldCacheSoftReference.get() != null) {
+            return fieldCacheSoftReference.get();
+        }
+        synchronized (clazz) {
+            fieldCacheSoftReference = FIELD_CACHE.get(clazz);
+            if (fieldCacheSoftReference != null && fieldCacheSoftReference.get() != null) {
+                return fieldCacheSoftReference.get();
+            }
+            declaredFields(clazz, convertAllFiled);
+        }
+        return FIELD_CACHE.get(clazz).get();
+    }
+
+    private static void declaredFields(Class clazz, Boolean convertAllFiled) {
+        List<Field> tempFieldList = new ArrayList<Field>();
+        Class tempClass = clazz;
+        // When the parent class is null, it indicates that the parent class (Object class) has reached the top
+        // level.
+        while (tempClass != null && tempClass != BaseRowModel.class) {
+            Collections.addAll(tempFieldList, tempClass.getDeclaredFields());
+            // Get the parent class and give it to yourself
+            tempClass = tempClass.getSuperclass();
+        }
+        // Screening of field
+        List<Field> defaultFieldList = new ArrayList<Field>();
+        Map<Integer, Field> customFiledMap = new TreeMap<Integer, Field>();
+        List<Field> allFieldList = new ArrayList<Field>();
+        Map<String, Field> ignoreMap = new HashMap<String, Field>(16);
+
+        ExcelIgnoreUnannotated excelIgnoreUnannotated =
+            (ExcelIgnoreUnannotated)clazz.getAnnotation(ExcelIgnoreUnannotated.class);
+        for (Field field : tempFieldList) {
+            ExcelIgnore excelIgnore = field.getAnnotation(ExcelIgnore.class);
+            if (excelIgnore != null) {
+                ignoreMap.put(field.getName(), field);
+                continue;
+            }
+            ExcelProperty excelProperty = field.getAnnotation(ExcelProperty.class);
+            boolean noExcelProperty = excelProperty == null
+                && ((convertAllFiled != null && !convertAllFiled) || excelIgnoreUnannotated != null);
+            if (noExcelProperty) {
+                ignoreMap.put(field.getName(), field);
+                continue;
+            }
+            boolean isStaticFinalOrTransient =
+                (Modifier.isStatic(field.getModifiers()) && Modifier.isFinal(field.getModifiers()))
+                    || Modifier.isTransient(field.getModifiers());
+            if (excelProperty == null && isStaticFinalOrTransient) {
+                ignoreMap.put(field.getName(), field);
+                continue;
+            }
+            if (excelProperty == null || excelProperty.index() < 0) {
+                defaultFieldList.add(field);
+                allFieldList.add(field);
+                continue;
+            }
+            if (customFiledMap.containsKey(excelProperty.index())) {
+                throw new ExcelCommonException("The index of '" + customFiledMap.get(excelProperty.index()).getName()
+                    + "' and '" + field.getName() + "' must be inconsistent");
+            }
+            customFiledMap.put(excelProperty.index(), field);
+            allFieldList.add(field);
+        }
+
+        FIELD_CACHE.put(clazz,
+            new SoftReference<FieldCache>(new FieldCache(defaultFieldList, customFiledMap, allFieldList, ignoreMap)));
+    }
+
+    private static class FieldCache {
+        private List<Field> defaultFieldList;
+        private Map<Integer, Field> customFiledMap;
+        private List<Field> allFieldList;
+        private Map<String, Field> ignoreMap;
+
+        public FieldCache(List<Field> defaultFieldList, Map<Integer, Field> customFiledMap, List<Field> allFieldList,
+            Map<String, Field> ignoreMap) {
+            this.defaultFieldList = defaultFieldList;
+            this.customFiledMap = customFiledMap;
+            this.allFieldList = allFieldList;
+            this.ignoreMap = ignoreMap;
+        }
+
+        public List<Field> getDefaultFieldList() {
+            return defaultFieldList;
+        }
+
+        public Map<Integer, Field> getCustomFiledMap() {
+            return customFiledMap;
+        }
+
+        public List<Field> getAllFieldList() {
+            return allFieldList;
+        }
+
+        public Map<String, Field> getIgnoreMap() {
+            return ignoreMap;
+        }
+
+    }
+}

src/main/java/com/alibaba/excel/util/ConverterUtils.java

@@ -6,6 +6,7 @@ import java.lang.reflect.Type;
 import java.util.HashMap;
 import java.util.Map;
 
+import com.alibaba.excel.context.AnalysisContext;
 import com.alibaba.excel.converters.Converter;
 import com.alibaba.excel.converters.ConverterKeyBuild;
 import com.alibaba.excel.enums.CellDataTypeEnum;
@@ -28,28 +29,37 @@ public class ConverterUtils {
      * Convert it into a String map
      *
      * @param cellDataMap
-     * @param readHolder
+     * @param context
      * @return
      */
-    public static Map<Integer, String> convertToStringMap(Map<Integer, CellData> cellDataMap, ReadHolder readHolder) {
+    public static Map<Integer, String> convertToStringMap(Map<Integer, CellData> cellDataMap, AnalysisContext context) {
         Map<Integer, String> stringMap = new HashMap<Integer, String>(cellDataMap.size() * 4 / 3 + 1);
+        ReadHolder currentReadHolder = context.currentReadHolder();
+        int index = 0;
         for (Map.Entry<Integer, CellData> entry : cellDataMap.entrySet()) {
+            Integer key = entry.getKey();
             CellData cellData = entry.getValue();
+            while (index < key) {
+                stringMap.put(index, null);
+                index++;
+            }
+            index++;
             if (cellData.getType() == CellDataTypeEnum.EMPTY) {
-                stringMap.put(entry.getKey(), null);
+                stringMap.put(key, null);
                 continue;
             }
             Converter converter =
-                readHolder.converterMap().get(ConverterKeyBuild.buildKey(String.class, cellData.getType()));
+                currentReadHolder.converterMap().get(ConverterKeyBuild.buildKey(String.class, cellData.getType()));
             if (converter == null) {
-                throw new ExcelDataConvertException(
+                throw new ExcelDataConvertException(context.readRowHolder().getRowIndex(), key, cellData, null,
                     "Converter not found, convert " + cellData.getType() + " to String");
             }
             try {
-                stringMap.put(entry.getKey(),
-                    (String)(converter.convertToJavaData(cellData, null, readHolder.globalConfiguration())));
+                stringMap.put(key,
+                    (String)(converter.convertToJavaData(cellData, null, currentReadHolder.globalConfiguration())));
             } catch (Exception e) {
-                throw new ExcelDataConvertException("Convert data " + cellData + " to String error ", e);
+                throw new ExcelDataConvertException(context.readRowHolder().getRowIndex(), key, cellData, null,
+                    "Convert data " + cellData + " to String error ", e);
             }
         }
         return stringMap;
@@ -116,13 +126,13 @@ public class ConverterUtils {
             converter = converterMap.get(ConverterKeyBuild.buildKey(clazz, cellData.getType()));
         }
         if (converter == null) {
-            throw new ExcelDataConvertException(rowIndex, columnIndex, contentProperty,
+            throw new ExcelDataConvertException(rowIndex, columnIndex, cellData, contentProperty,
                 "Converter not found, convert " + cellData.getType() + " to " + clazz.getName());
         }
         try {
             return converter.convertToJavaData(cellData, contentProperty, globalConfiguration);
         } catch (Exception e) {
-            throw new ExcelDataConvertException(rowIndex, columnIndex, contentProperty,
+            throw new ExcelDataConvertException(rowIndex, columnIndex, cellData, contentProperty,
                 "Convert data " + cellData + " to " + clazz + " error ", e);
         }
     }

src/main/java/com/alibaba/excel/util/DateUtils.java

@@ -1,10 +1,12 @@
 package com.alibaba.excel.util;
 
+import java.text.DateFormat;
 import java.text.ParseException;
 import java.text.SimpleDateFormat;
 import java.util.Date;
-
-import com.alibaba.excel.exception.ExcelDataConvertException;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.regex.Pattern;
 
 /**
  * Date utils
@@ -12,6 +14,34 @@ import com.alibaba.excel.exception.ExcelDataConvertException;
  * @author Jiaju Zhuang
  **/
 public class DateUtils {
+    /**
+     * Is a cache of dates
+     */
+    private static final ThreadLocal<Map<Integer, Boolean>> DATE_THREAD_LOCAL =
+        new ThreadLocal<Map<Integer, Boolean>>();
+    /**
+     * Is a cache of dates
+     */
+    private static final ThreadLocal<Map<String, SimpleDateFormat>> DATE_FORMAT_THREAD_LOCAL =
+        new ThreadLocal<Map<String, SimpleDateFormat>>();
+
+    /**
+     * The following patterns are used in {@link #isADateFormat(Integer, String)}
+     */
+    private static final Pattern date_ptrn1 = Pattern.compile("^\\[\\$\\-.*?\\]");
+    private static final Pattern date_ptrn2 = Pattern.compile("^\\[[a-zA-Z]+\\]");
+    private static final Pattern date_ptrn3a = Pattern.compile("[yYmMdDhHsS]");
+    // add "\u5e74 \u6708 \u65e5" for Chinese/Japanese date format:2017 \u5e74 2 \u6708 7 \u65e5
+    private static final Pattern date_ptrn3b =
+        Pattern.compile("^[\\[\\]yYmMdDhHsS\\-T/\u5e74\u6708\u65e5,. :\"\\\\]+0*[ampAMP/]*$");
+    // elapsed time patterns: [h],[m] and [s]
+    private static final Pattern date_ptrn4 = Pattern.compile("^\\[([hH]+|[mM]+|[sS]+)\\]");
+    // for format which start with "[DBNum1]" or "[DBNum2]" or "[DBNum3]" could be a Chinese date
+    private static final Pattern date_ptrn5 = Pattern.compile("^\\[DBNum(1|2|3)\\]");
+    // for format which start with "年" or "月" or "日" or "时" or "分" or "秒" could be a Chinese date
+    private static final Pattern date_ptrn6 = Pattern.compile("(年|月|日|时|分|秒)+");
+
+    public static final String DATE_FORMAT_10 = "yyyy-MM-dd";
     public static final String DATE_FORMAT_14 = "yyyyMMddHHmmss";
     public static final String DATE_FORMAT_17 = "yyyyMMdd HH:mm:ss";
     public static final String DATE_FORMAT_19 = "yyyy-MM-dd HH:mm:ss";
@@ -32,7 +62,7 @@ public class DateUtils {
         if (StringUtils.isEmpty(dateFormat)) {
             dateFormat = switchDateFormat(dateString);
         }
-        return new SimpleDateFormat(dateFormat).parse(dateString);
+        return getCacheDateFormat(dateFormat).parse(dateString);
     }
 
     /**
@@ -65,8 +95,10 @@ public class DateUtils {
                 return DATE_FORMAT_17;
             case 14:
                 return DATE_FORMAT_14;
+            case 10:
+                return DATE_FORMAT_10;
             default:
-                throw new ExcelDataConvertException("can not find date format for：" + dateString);
+                throw new IllegalArgumentException("can not find date format for：" + dateString);
         }
     }
 
@@ -96,6 +128,182 @@ public class DateUtils {
         if (StringUtils.isEmpty(dateFormat)) {
             dateFormat = DATE_FORMAT_19;
         }
-        return new SimpleDateFormat(dateFormat).format(date);
+        return getCacheDateFormat(dateFormat).format(date);
+    }
+
+    private static DateFormat getCacheDateFormat(String dateFormat) {
+        Map<String, SimpleDateFormat> dateFormatMap = DATE_FORMAT_THREAD_LOCAL.get();
+        if (dateFormatMap == null) {
+            dateFormatMap = new HashMap<String, SimpleDateFormat>();
+            DATE_FORMAT_THREAD_LOCAL.set(dateFormatMap);
+        } else {
+            SimpleDateFormat dateFormatCached = dateFormatMap.get(dateFormat);
+            if (dateFormatCached != null) {
+                return dateFormatCached;
+            }
+        }
+        SimpleDateFormat simpleDateFormat = new SimpleDateFormat(dateFormat);
+        dateFormatMap.put(dateFormat, simpleDateFormat);
+        return simpleDateFormat;
+    }
+
+    /**
+     * Determine if it is a date format.
+     *
+     * @param formatIndex
+     * @param formatString
+     * @return
+     */
+    public static boolean isADateFormat(Integer formatIndex, String formatString) {
+        if (formatIndex == null) {
+            return false;
+        }
+        Map<Integer, Boolean> isDateCache = DATE_THREAD_LOCAL.get();
+        if (isDateCache == null) {
+            isDateCache = new HashMap<Integer, Boolean>();
+            DATE_THREAD_LOCAL.set(isDateCache);
+        } else {
+            Boolean isDateCachedData = isDateCache.get(formatIndex);
+            if (isDateCachedData != null) {
+                return isDateCachedData;
+            }
+        }
+        boolean isDate = isADateFormatUncached(formatIndex, formatString);
+        isDateCache.put(formatIndex, isDate);
+        return isDate;
+    }
+
+    /**
+     * Determine if it is a date format.
+     *
+     * @param formatIndex
+     * @param formatString
+     * @return
+     */
+    public static boolean isADateFormatUncached(Integer formatIndex, String formatString) {
+        // First up, is this an internal date format?
+        if (isInternalDateFormat(formatIndex)) {
+            return true;
+        }
+        if (StringUtils.isEmpty(formatString)) {
+            return false;
+        }
+        String fs = formatString;
+        final int length = fs.length();
+        StringBuilder sb = new StringBuilder(length);
+        for (int i = 0; i < length; i++) {
+            char c = fs.charAt(i);
+            if (i < length - 1) {
+                char nc = fs.charAt(i + 1);
+                if (c == '\\') {
+                    switch (nc) {
+                        case '-':
+                        case ',':
+                        case '.':
+                        case ' ':
+                        case '\\':
+                            // skip current '\' and continue to the next char
+                            continue;
+                    }
+                } else if (c == ';' && nc == '@') {
+                    i++;
+                    // skip ";@" duplets
+                    continue;
+                }
+            }
+            sb.append(c);
+        }
+        fs = sb.toString();
+
+        // short-circuit if it indicates elapsed time: [h], [m] or [s]
+        if (date_ptrn4.matcher(fs).matches()) {
+            return true;
+        }
+        // If it starts with [DBNum1] or [DBNum2] or [DBNum3]
+        // then it could be a Chinese date
+        fs = date_ptrn5.matcher(fs).replaceAll("");
+        // If it starts with [$-...], then could be a date, but
+        // who knows what that starting bit is all about
+        fs = date_ptrn1.matcher(fs).replaceAll("");
+        // If it starts with something like [Black] or [Yellow],
+        // then it could be a date
+        fs = date_ptrn2.matcher(fs).replaceAll("");
+        // You're allowed something like dd/mm/yy;[red]dd/mm/yy
+        // which would place dates before 1900/1904 in red
+        // For now, only consider the first one
+        final int separatorIndex = fs.indexOf(';');
+        if (0 < separatorIndex && separatorIndex < fs.length() - 1) {
+            fs = fs.substring(0, separatorIndex);
+        }
+
+        // Ensure it has some date letters in it
+        // (Avoids false positives on the rest of pattern 3)
+        if (!date_ptrn3a.matcher(fs).find()) {
+            return false;
+        }
+
+        // If we get here, check it's only made up, in any case, of:
+        // y m d h s - \ / , . : [ ] T
+        // optionally followed by AM/PM
+        boolean result = date_ptrn3b.matcher(fs).matches();
+        if (result) {
+            return true;
+        }
+        result = date_ptrn6.matcher(fs).find();
+        return result;
+    }
+
+    /**
+     * Given a format ID this will check whether the format represents an internal excel date format or not.
+     *
+     * @see #isADateFormat(Integer, String)
+     */
+    public static boolean isInternalDateFormat(int format) {
+        switch (format) {
+            // Internal Date Formats as described on page 427 in
+            // Microsoft Excel Dev's Kit...
+            // 14-22
+            case 0x0e:
+            case 0x0f:
+            case 0x10:
+            case 0x11:
+            case 0x12:
+            case 0x13:
+            case 0x14:
+            case 0x15:
+            case 0x16:
+                // 27-36
+            case 0x1b:
+            case 0x1c:
+            case 0x1d:
+            case 0x1e:
+            case 0x1f:
+            case 0x20:
+            case 0x21:
+            case 0x22:
+            case 0x23:
+            case 0x24:
+                // 45-47
+            case 0x2d:
+            case 0x2e:
+            case 0x2f:
+                // 50-58
+            case 0x32:
+            case 0x33:
+            case 0x34:
+            case 0x35:
+            case 0x36:
+            case 0x37:
+            case 0x38:
+            case 0x39:
+            case 0x3a:
+                return true;
+        }
+        return false;
+    }
+
+    public static void removeThreadLocalCache() {
+        DATE_THREAD_LOCAL.remove();
+        DATE_FORMAT_THREAD_LOCAL.remove();
     }
 }

src/main/java/com/alibaba/excel/util/FileUtils.java

@@ -9,24 +9,50 @@ import java.io.InputStream;
 import java.io.OutputStream;
 import java.util.UUID;
 
+import org.apache.poi.util.DefaultTempFileCreationStrategy;
+import org.apache.poi.util.TempFile;
+
 import com.alibaba.excel.exception.ExcelAnalysisException;
-import com.alibaba.excel.exception.ExcelGenerateException;
+import com.alibaba.excel.exception.ExcelCommonException;
 
 /**
  *
  * @author jipengfei
  */
 public class FileUtils {
+    public static final String POI_FILES = "poifiles";
+    public static final String EX_CACHE = "excache";
+    /**
+     * If a server has multiple projects in use at the same time, a directory with the same name will be created under
+     * the temporary directory, but each project is run by a different user, so there is a permission problem, so each
+     * project creates a unique UUID as a separate Temporary Files.
+     */
+    private static String tempFilePrefix =
+        System.getProperty(TempFile.JAVA_IO_TMPDIR) + File.separator + UUID.randomUUID().toString() + File.separator;
+    /**
+     * Used to store poi temporary files.
+     */
+    private static String poiFilesPath = tempFilePrefix + POI_FILES + File.separator;
+    /**
+     * Used to store easy excel temporary files.
+     */
+    private static String cachePath = tempFilePrefix + EX_CACHE + File.separator;
 
-    private static final String JAVA_IO_TMPDIR = "java.io.tmpdir";
-
-    private static final String POIFILES = "poifiles";
-
-    private static final String CACHE = "excache";
     private static final int WRITE_BUFF_SIZE = 8192;
 
     private FileUtils() {}
 
+    static {
+        // Create a temporary directory in advance
+        File tempFile = new File(tempFilePrefix);
+        createDirectory(tempFile);
+        tempFile.deleteOnExit();
+        // Initialize the cache directory
+        File cacheFile = new File(cachePath);
+        createDirectory(cacheFile);
+        cacheFile.deleteOnExit();
+    }
+
     /**
      * Reads the contents of a file into a byte array. * The file is always closed.
      *
@@ -106,19 +132,31 @@ public class FileUtils {
         }
     }
 
-    /**
-     */
     public static void createPoiFilesDirectory() {
-        createTmpDirectory(POIFILES);
+        File poiFilesPathFile = new File(poiFilesPath);
+        createDirectory(poiFilesPathFile);
+        TempFile.setTempFileCreationStrategy(new DefaultTempFileCreationStrategy(poiFilesPathFile));
+        poiFilesPathFile.deleteOnExit();
     }
 
     public static File createCacheTmpFile() {
-        File directory = createTmpDirectory(CACHE);
-        File cache = new File(directory.getPath(), UUID.randomUUID().toString());
-        if (!cache.mkdir()) {
-            throw new ExcelGenerateException("Can not create temp file!");
+        return createDirectory(new File(cachePath + UUID.randomUUID().toString()));
+    }
+
+    public static File createTmpFile(String fileName) {
+        File directory = createDirectory(new File(tempFilePrefix));
+        return new File(directory, fileName);
+    }
+
+    /**
+     *
+     * @param directory
+     */
+    private static File createDirectory(File directory) {
+        if (!directory.exists() && !directory.mkdirs()) {
+            throw new ExcelCommonException("Cannot create directory:" + directory.getAbsolutePath());
         }
-        return cache;
+        return directory;
     }
 
     /**
@@ -144,35 +182,27 @@ public class FileUtils {
         }
     }
 
-    public static File createTmpDirectory(String path) {
-        String tmpDir = System.getProperty(JAVA_IO_TMPDIR);
-        if (tmpDir == null) {
-            throw new RuntimeException(
-                "Systems temporary directory not defined - set the -D" + JAVA_IO_TMPDIR + " jvm property!");
-        }
-        File directory = new File(tmpDir, path);
-        if (!directory.exists()) {
-            syncCreatePoiFilesDirectory(directory);
-        }
-        return directory;
+    public static String getTempFilePrefix() {
+        return tempFilePrefix;
     }
 
-    public static File createTmpFile(String fileName) {
-        String tmpDir = System.getProperty(JAVA_IO_TMPDIR);
-        if (tmpDir == null) {
-            throw new RuntimeException(
-                "Systems temporary directory not defined - set the -D" + JAVA_IO_TMPDIR + " jvm property!");
-        }
-        return new File(tmpDir, fileName);
+    public static void setTempFilePrefix(String tempFilePrefix) {
+        FileUtils.tempFilePrefix = tempFilePrefix;
     }
 
-    /**
-     *
-     * @param directory
-     */
-    private static synchronized void syncCreatePoiFilesDirectory(File directory) {
-        if (!directory.exists()) {
-            directory.mkdirs();
-        }
+    public static String getPoiFilesPath() {
+        return poiFilesPath;
+    }
+
+    public static void setPoiFilesPath(String poiFilesPath) {
+        FileUtils.poiFilesPath = poiFilesPath;
+    }
+
+    public static String getCachePath() {
+        return cachePath;
+    }
+
+    public static void setCachePath(String cachePath) {
+        FileUtils.cachePath = cachePath;
     }
 }

src/main/java/com/alibaba/excel/util/NumberDataFormatterUtils.java

@@ -0,0 +1,46 @@
+package com.alibaba.excel.util;
+
+import com.alibaba.excel.metadata.DataFormatter;
+import com.alibaba.excel.metadata.GlobalConfiguration;
+
+/**
+ * Convert number data, including date.
+ *
+ * @author Jiaju Zhuang
+ **/
+public class NumberDataFormatterUtils {
+    /**
+     * Cache DataFormatter.
+     */
+    private static final ThreadLocal<DataFormatter> DATA_FORMATTER_THREAD_LOCAL = new ThreadLocal<DataFormatter>();
+
+    /**
+     * Format number data.
+     *
+     * @param data
+     * @param dataFormat
+     *            Not null.
+     * @param dataFormatString
+     * @param globalConfiguration
+     * @return
+     */
+    public static String format(Double data, Integer dataFormat, String dataFormatString,
+        GlobalConfiguration globalConfiguration) {
+        DataFormatter dataFormatter = DATA_FORMATTER_THREAD_LOCAL.get();
+        if (dataFormatter == null) {
+            if (globalConfiguration != null) {
+                dataFormatter =
+                    new DataFormatter(globalConfiguration.getLocale(), globalConfiguration.getUse1904windowing());
+            } else {
+                dataFormatter = new DataFormatter();
+            }
+            DATA_FORMATTER_THREAD_LOCAL.set(dataFormatter);
+        }
+        return dataFormatter.format(data, dataFormat, dataFormatString);
+
+    }
+
+    public static void removeThreadLocalCache() {
+        DATA_FORMATTER_THREAD_LOCAL.remove();
+    }
+}

src/main/java/com/alibaba/excel/util/WorkBookUtil.java

@@ -31,12 +31,21 @@ public class WorkBookUtil {
             if (writeWorkbookHolder.getTempTemplateInputStream() != null) {
                 XSSFWorkbook xssfWorkbook = new XSSFWorkbook(writeWorkbookHolder.getTempTemplateInputStream());
                 writeWorkbookHolder.setCachedWorkbook(xssfWorkbook);
-                writeWorkbookHolder.setWorkbook(new SXSSFWorkbook(xssfWorkbook, ROW_ACCESS_WINDOW_SIZE));
+                if (writeWorkbookHolder.getInMemory()) {
+                    writeWorkbookHolder.setWorkbook(xssfWorkbook);
+                } else {
+                    writeWorkbookHolder.setWorkbook(new SXSSFWorkbook(xssfWorkbook, ROW_ACCESS_WINDOW_SIZE));
+                }
                 return;
             }
-            SXSSFWorkbook sxssWorkbook = new SXSSFWorkbook(ROW_ACCESS_WINDOW_SIZE);
-            writeWorkbookHolder.setCachedWorkbook(sxssWorkbook);
-            writeWorkbookHolder.setWorkbook(sxssWorkbook);
+            Workbook workbook = null;
+            if (writeWorkbookHolder.getInMemory()) {
+                workbook = new XSSFWorkbook();
+            } else {
+                workbook = new SXSSFWorkbook(ROW_ACCESS_WINDOW_SIZE);
+            }
+            writeWorkbookHolder.setCachedWorkbook(workbook);
+            writeWorkbookHolder.setWorkbook(workbook);
             return;
         }
         HSSFWorkbook hssfWorkbook;

src/main/java/com/alibaba/excel/write/ExcelBuilder.java

@@ -71,11 +71,14 @@ public interface ExcelBuilder {
 
     /**
      * Close io
+     *
+     * @param onException
      */
-    void finish();
+    void finish(boolean onException);
 
     /**
      * add password
+     *
      * @param data
      * @param writeSheet
      * @param writeTable

src/main/java/com/alibaba/excel/write/ExcelBuilderImpl.java

@@ -25,16 +25,19 @@ public class ExcelBuilderImpl implements ExcelBuilder {
     private ExcelWriteFillExecutor excelWriteFillExecutor;
     private ExcelWriteAddExecutor excelWriteAddExecutor;
 
+    static {
+        // Create temporary cache directory at initialization time to avoid POI concurrent write bugs
+        FileUtils.createPoiFilesDirectory();
+    }
+
     public ExcelBuilderImpl(WriteWorkbook writeWorkbook) {
         try {
-            // Create temporary cache directory at initialization time to avoid POI concurrent write bugs
-            FileUtils.createPoiFilesDirectory();
             context = new WriteContextImpl(writeWorkbook);
         } catch (RuntimeException e) {
-            finish();
+            finishOnException();
             throw e;
         } catch (Throwable e) {
-            finish();
+            finishOnException();
             throw new ExcelGenerateException(e);
         }
     }
@@ -57,10 +60,10 @@ public class ExcelBuilderImpl implements ExcelBuilder {
             }
             excelWriteAddExecutor.add(data);
         } catch (RuntimeException e) {
-            finish();
+            finishOnException();
             throw e;
         } catch (Throwable e) {
-            finish();
+            finishOnException();
             throw new ExcelGenerateException(e);
         }
     }
@@ -80,18 +83,22 @@ public class ExcelBuilderImpl implements ExcelBuilder {
             }
             excelWriteFillExecutor.fill(data, fillConfig);
         } catch (RuntimeException e) {
-            finish();
+            finishOnException();
             throw e;
         } catch (Throwable e) {
-            finish();
+            finishOnException();
             throw new ExcelGenerateException(e);
         }
     }
 
+    private void finishOnException() {
+        finish(true);
+    }
+
     @Override
-    public void finish() {
+    public void finish(boolean onException) {
         if (context != null) {
-            context.finish();
+            context.finish(onException);
         }
     }
 
@@ -108,10 +115,10 @@ public class ExcelBuilderImpl implements ExcelBuilder {
             }
             excelWriteAddExecutor.add(data);
         } catch (RuntimeException e) {
-            finish();
+            finishOnException();
             throw e;
         } catch (Throwable e) {
-            finish();
+            finishOnException();
             throw new ExcelGenerateException(e);
         }
     }

src/main/java/com/alibaba/excel/write/builder/AbstractExcelWriterParameterBuilder.java

@@ -0,0 +1,104 @@
+package com.alibaba.excel.write.builder;
+
+import java.util.ArrayList;
+import java.util.Collection;
+
+import com.alibaba.excel.metadata.AbstractParameterBuilder;
+import com.alibaba.excel.write.handler.WriteHandler;
+import com.alibaba.excel.write.metadata.WriteBasicParameter;
+
+/**
+ * Build ExcelBuilder
+ *
+ * @author Jiaju Zhuang
+ */
+public abstract class AbstractExcelWriterParameterBuilder<T extends AbstractExcelWriterParameterBuilder,
+    C extends WriteBasicParameter> extends AbstractParameterBuilder<T, C> {
+    /**
+     * Writes the head relative to the existing contents of the sheet. Indexes are zero-based.
+     *
+     * @param relativeHeadRowIndex
+     * @return
+     */
+    public T relativeHeadRowIndex(Integer relativeHeadRowIndex) {
+        parameter().setRelativeHeadRowIndex(relativeHeadRowIndex);
+        return self();
+    }
+
+    /**
+     * Need Head
+     */
+    public T needHead(Boolean needHead) {
+        parameter().setNeedHead(needHead);
+        return self();
+    }
+
+    /**
+     * Custom write handler
+     *
+     * @param writeHandler
+     * @return
+     */
+    public T registerWriteHandler(WriteHandler writeHandler) {
+        if (parameter().getCustomWriteHandlerList() == null) {
+            parameter().setCustomWriteHandlerList(new ArrayList<WriteHandler>());
+        }
+        parameter().getCustomWriteHandlerList().add(writeHandler);
+        return self();
+    }
+
+    /**
+     * Use the default style.Default is true.
+     *
+     * @param useDefaultStyle
+     * @return
+     */
+    public T useDefaultStyle(Boolean useDefaultStyle) {
+        parameter().setUseDefaultStyle(useDefaultStyle);
+        return self();
+    }
+
+    /**
+     * Whether to automatically merge headers.Default is true.
+     *
+     * @param automaticMergeHead
+     * @return
+     */
+    public T automaticMergeHead(Boolean automaticMergeHead) {
+        parameter().setAutomaticMergeHead(automaticMergeHead);
+        return self();
+    }
+
+    /**
+     * Ignore the custom columns.
+     */
+    public T excludeColumnIndexes(Collection<Integer> excludeColumnIndexes) {
+        parameter().setExcludeColumnIndexes(excludeColumnIndexes);
+        return self();
+    }
+
+    /**
+     * Ignore the custom columns.
+     */
+    public T excludeColumnFiledNames(Collection<String> excludeColumnFiledNames) {
+        parameter().setExcludeColumnFiledNames(excludeColumnFiledNames);
+        return self();
+    }
+
+    /**
+     * Only output the custom columns.
+     */
+    public T includeColumnIndexes(Collection<Integer> includeColumnIndexes) {
+        parameter().setIncludeColumnIndexes(includeColumnIndexes);
+        return self();
+    }
+
+    /**
+     * Only output the custom columns.
+     */
+    public T includeColumnFiledNames(Collection<String> includeColumnFiledNames) {
+        parameter().setIncludeColumnFiledNames(includeColumnFiledNames);
+        return self();
+    }
+
+}

src/main/java/com/alibaba/excel/write/builder/ExcelWriterBuilder.java

@@ -3,11 +3,8 @@ package com.alibaba.excel.write.builder;
 import java.io.File;
 import java.io.InputStream;
 import java.io.OutputStream;
-import java.util.ArrayList;
-import java.util.List;
 
 import com.alibaba.excel.ExcelWriter;
-import com.alibaba.excel.converters.Converter;
 import com.alibaba.excel.support.ExcelTypeEnum;
 import com.alibaba.excel.write.handler.WriteHandler;
 import com.alibaba.excel.write.metadata.WriteWorkbook;
@@ -17,7 +14,7 @@ import com.alibaba.excel.write.metadata.WriteWorkbook;
  *
  * @author Jiaju Zhuang
  */
-public class ExcelWriterBuilder {
+public class ExcelWriterBuilder extends AbstractExcelWriterParameterBuilder<ExcelWriterBuilder, WriteWorkbook> {
     /**
      * Workbook
      */
@@ -27,47 +24,6 @@ public class ExcelWriterBuilder {
         this.writeWorkbook = new WriteWorkbook();
     }
 
-    /**
-     * Writes the head relative to the existing contents of the sheet. Indexes are zero-based.
-     *
-     * @param relativeHeadRowIndex
-     * @return
-     */
-    public ExcelWriterBuilder relativeHeadRowIndex(Integer relativeHeadRowIndex) {
-        writeWorkbook.setRelativeHeadRowIndex(relativeHeadRowIndex);
-        return this;
-    }
-
-    /**
-     * You can only choose one of the {@link ExcelWriterBuilder#head(List)} and {@link ExcelWriterBuilder#head(Class)}
-     *
-     * @param head
-     * @return
-     */
-    public ExcelWriterBuilder head(List<List<String>> head) {
-        writeWorkbook.setHead(head);
-        return this;
-    }
-
-    /**
-     * You can only choose one of the {@link ExcelWriterBuilder#head(List)} and {@link ExcelWriterBuilder#head(Class)}
-     *
-     * @param clazz
-     * @return
-     */
-    public ExcelWriterBuilder head(Class clazz) {
-        writeWorkbook.setClazz(clazz);
-        return this;
-    }
-
-    /**
-     * Need Head
-     */
-    public ExcelWriterBuilder needHead(Boolean needHead) {
-        writeWorkbook.setNeedHead(needHead);
-        return this;
-    }
-
     /**
      * Default true
      *
@@ -79,17 +35,6 @@ public class ExcelWriterBuilder {
         return this;
     }
 
-    /**
-     * Use the default style.Default is true.
-     *
-     * @param useDefaultStyle
-     * @return
-     */
-    public ExcelWriterBuilder useDefaultStyle(Boolean useDefaultStyle) {
-        writeWorkbook.setUseDefaultStyle(useDefaultStyle);
-        return this;
-    }
-
     /**
      * Whether the encryption.
      * <p>
@@ -104,46 +49,36 @@ public class ExcelWriterBuilder {
     }
 
     /**
-     * The default is all excel objects.if true , you can use {@link com.alibaba.excel.annotation.ExcelIgnore} ignore a
-     * field. if false , you must use {@link com.alibaba.excel.annotation.ExcelProperty} to use a filed.
+     * Write excel in memory. Default false,the cache file is created and finally written to excel.
      * <p>
-     * Default true
-     *
-     * @param convertAllFiled
-     * @return
-     * @deprecated Just to be compatible with historical data, The default is always going to be convert all filed.
+     * Comment and RichTextString are only supported in memory mode.
      */
-    @Deprecated
-    public ExcelWriterBuilder convertAllFiled(Boolean convertAllFiled) {
-        writeWorkbook.setConvertAllFiled(convertAllFiled);
+    public ExcelWriterBuilder inMemory(Boolean inMemory) {
+        writeWorkbook.setInMemory(inMemory);
         return this;
     }
 
     /**
-     * Custom type conversions override the default.
-     *
-     * @param converter
-     * @return
+     * Excel is also written in the event of an exception being thrown.The default false.
      */
-    public ExcelWriterBuilder registerConverter(Converter converter) {
-        if (writeWorkbook.getCustomConverterList() == null) {
-            writeWorkbook.setCustomConverterList(new ArrayList<Converter>());
-        }
-        writeWorkbook.getCustomConverterList().add(converter);
+    public ExcelWriterBuilder writeExcelOnException(Boolean writeExcelOnException) {
+        writeWorkbook.setWriteExcelOnException(writeExcelOnException);
         return this;
     }
 
     /**
-     * Custom write handler
+     * The default is all excel objects.if true , you can use {@link com.alibaba.excel.annotation.ExcelIgnore} ignore a
+     * field. if false , you must use {@link com.alibaba.excel.annotation.ExcelProperty} to use a filed.
+     * <p>
+     * Default true
      *
-     * @param writeHandler
+     * @param convertAllFiled
      * @return
+     * @deprecated Just to be compatible with historical data, The default is always going to be convert all filed.
      */
-    public ExcelWriterBuilder registerWriteHandler(WriteHandler writeHandler) {
-        if (writeWorkbook.getCustomWriteHandlerList() == null) {
-            writeWorkbook.setCustomWriteHandlerList(new ArrayList<WriteHandler>());
-        }
-        writeWorkbook.getCustomWriteHandlerList().add(writeHandler);
+    @Deprecated
+    public ExcelWriterBuilder convertAllFiled(Boolean convertAllFiled) {
+        writeWorkbook.setConvertAllFiled(convertAllFiled);
         return this;
     }
 
@@ -219,4 +154,8 @@ public class ExcelWriterBuilder {
         return excelWriterSheetBuilder;
     }
 
+    @Override
+    protected WriteWorkbook parameter() {
+        return writeWorkbook;
+    }
 }

src/main/java/com/alibaba/excel/write/builder/ExcelWriterSheetBuilder.java

@@ -1,12 +1,9 @@
 package com.alibaba.excel.write.builder;
 
-import java.util.ArrayList;
 import java.util.List;
 
 import com.alibaba.excel.ExcelWriter;
-import com.alibaba.excel.converters.Converter;
 import com.alibaba.excel.exception.ExcelGenerateException;
-import com.alibaba.excel.write.handler.WriteHandler;
 import com.alibaba.excel.write.metadata.WriteSheet;
 import com.alibaba.excel.write.metadata.fill.FillConfig;
 
@@ -15,7 +12,7 @@ import com.alibaba.excel.write.metadata.fill.FillConfig;
  *
  * @author Jiaju Zhuang
  */
-public class ExcelWriterSheetBuilder {
+public class ExcelWriterSheetBuilder extends AbstractExcelWriterParameterBuilder<ExcelWriterSheetBuilder, WriteSheet> {
     private ExcelWriter excelWriter;
     /**
      * Sheet
@@ -31,88 +28,6 @@ public class ExcelWriterSheetBuilder {
         this.excelWriter = excelWriter;
     }
 
-    /**
-     * Writes the head relative to the existing contents of the sheet. Indexes are zero-based.
-     *
-     * @param relativeHeadRowIndex
-     * @return
-     */
-    public ExcelWriterSheetBuilder relativeHeadRowIndex(Integer relativeHeadRowIndex) {
-        writeSheet.setRelativeHeadRowIndex(relativeHeadRowIndex);
-        return this;
-    }
-
-    /**
-     * You can only choose one of the {@link ExcelWriterSheetBuilder#head(List)} and
-     * {@link ExcelWriterSheetBuilder#head(Class)}
-     *
-     * @param head
-     * @return
-     */
-    public ExcelWriterSheetBuilder head(List<List<String>> head) {
-        writeSheet.setHead(head);
-        return this;
-    }
-
-    /**
-     * You can only choose one of the {@link ExcelWriterSheetBuilder#head(List)} and
-     * {@link ExcelWriterSheetBuilder#head(Class)}
-     *
-     * @param clazz
-     * @return
-     */
-    public ExcelWriterSheetBuilder head(Class clazz) {
-        writeSheet.setClazz(clazz);
-        return this;
-    }
-
-    /**
-     * Need Head
-     */
-    public ExcelWriterSheetBuilder needHead(Boolean needHead) {
-        writeSheet.setNeedHead(needHead);
-        return this;
-    }
-
-    /**
-     * Use the default style.Default is true.
-     *
-     * @param useDefaultStyle
-     * @return
-     */
-    public ExcelWriterSheetBuilder useDefaultStyle(Boolean useDefaultStyle) {
-        writeSheet.setUseDefaultStyle(useDefaultStyle);
-        return this;
-    }
-
-    /**
-     * Custom type conversions override the default.
-     *
-     * @param converter
-     * @return
-     */
-    public ExcelWriterSheetBuilder registerConverter(Converter converter) {
-        if (writeSheet.getCustomConverterList() == null) {
-            writeSheet.setCustomConverterList(new ArrayList<Converter>());
-        }
-        writeSheet.getCustomConverterList().add(converter);
-        return this;
-    }
-
-    /**
-     * Custom write handler
-     *
-     * @param writeHandler
-     * @return
-     */
-    public ExcelWriterSheetBuilder registerWriteHandler(WriteHandler writeHandler) {
-        if (writeSheet.getCustomWriteHandlerList() == null) {
-            writeSheet.setCustomWriteHandlerList(new ArrayList<WriteHandler>());
-        }
-        writeSheet.getCustomWriteHandlerList().add(writeHandler);
-        return this;
-    }
-
     /**
      * Starting from 0
      *
@@ -171,4 +86,9 @@ public class ExcelWriterSheetBuilder {
         return excelWriterTableBuilder;
     }
 
+    @Override
+    protected WriteSheet parameter() {
+        return writeSheet;
+    }
+
 }

src/main/java/com/alibaba/excel/write/builder/ExcelWriterTableBuilder.java

@@ -1,12 +1,9 @@
 package com.alibaba.excel.write.builder;
 
-import java.util.ArrayList;
 import java.util.List;
 
 import com.alibaba.excel.ExcelWriter;
-import com.alibaba.excel.converters.Converter;
 import com.alibaba.excel.exception.ExcelGenerateException;
-import com.alibaba.excel.write.handler.WriteHandler;
 import com.alibaba.excel.write.metadata.WriteSheet;
 import com.alibaba.excel.write.metadata.WriteTable;
 
@@ -15,7 +12,7 @@ import com.alibaba.excel.write.metadata.WriteTable;
  *
  * @author Jiaju Zhuang
  */
-public class ExcelWriterTableBuilder {
+public class ExcelWriterTableBuilder extends AbstractExcelWriterParameterBuilder<ExcelWriterTableBuilder, WriteTable> {
 
     private ExcelWriter excelWriter;
 
@@ -35,88 +32,6 @@ public class ExcelWriterTableBuilder {
         this.writeTable = new WriteTable();
     }
 
-    /**
-     * Writes the head relative to the existing contents of the sheet. Indexes are zero-based.
-     *
-     * @param relativeHeadRowIndex
-     * @return
-     */
-    public ExcelWriterTableBuilder relativeHeadRowIndex(Integer relativeHeadRowIndex) {
-        writeTable.setRelativeHeadRowIndex(relativeHeadRowIndex);
-        return this;
-    }
-
-    /**
-     * You can only choose one of the {@link ExcelWriterTableBuilder#head(List)} and
-     * {@link ExcelWriterTableBuilder#head(Class)}
-     *
-     * @param head
-     * @return
-     */
-    public ExcelWriterTableBuilder head(List<List<String>> head) {
-        writeTable.setHead(head);
-        return this;
-    }
-
-    /**
-     * You can only choose one of the {@link ExcelWriterTableBuilder#head(List)} and
-     * {@link ExcelWriterTableBuilder#head(Class)}
-     *
-     * @param clazz
-     * @return
-     */
-    public ExcelWriterTableBuilder head(Class clazz) {
-        writeTable.setClazz(clazz);
-        return this;
-    }
-
-    /**
-     * Need Head
-     */
-    public ExcelWriterTableBuilder needHead(Boolean needHead) {
-        writeTable.setNeedHead(needHead);
-        return this;
-    }
-
-    /**
-     * Use the default style.Default is true.
-     *
-     * @param useDefaultStyle
-     * @return
-     */
-    public ExcelWriterTableBuilder useDefaultStyle(Boolean useDefaultStyle) {
-        writeTable.setUseDefaultStyle(useDefaultStyle);
-        return this;
-    }
-
-    /**
-     * Custom type conversions override the default.
-     *
-     * @param converter
-     * @return
-     */
-    public ExcelWriterTableBuilder registerConverter(Converter converter) {
-        if (writeTable.getCustomConverterList() == null) {
-            writeTable.setCustomConverterList(new ArrayList<Converter>());
-        }
-        writeTable.getCustomConverterList().add(converter);
-        return this;
-    }
-
-    /**
-     * Custom write handler
-     *
-     * @param writeHandler
-     * @return
-     */
-    public ExcelWriterTableBuilder registerWriteHandler(WriteHandler writeHandler) {
-        if (writeTable.getCustomWriteHandlerList() == null) {
-            writeTable.setCustomWriteHandlerList(new ArrayList<WriteHandler>());
-        }
-        writeTable.getCustomWriteHandlerList().add(writeHandler);
-        return this;
-    }
-
     /**
      * Starting from 0
      *
@@ -140,4 +55,8 @@ public class ExcelWriterTableBuilder {
         excelWriter.finish();
     }
 
+    @Override
+    protected WriteTable parameter() {
+        return writeTable;
+    }
 }

src/main/java/com/alibaba/excel/write/executor/AbstractExcelWriteExecutor.java

@@ -31,7 +31,7 @@ public abstract class AbstractExcelWriteExecutor implements ExcelWriteExecutor {
     protected CellData converterAndSet(WriteHolder currentWriteHolder, Class clazz, Cell cell, Object value,
         ExcelContentProperty excelContentProperty) {
         if (value == null) {
-            return new CellData();
+            return new CellData(CellDataTypeEnum.EMPTY);
         }
         if (value instanceof String && currentWriteHolder.globalConfiguration().getAutoTrim()) {
             value = ((String)value).trim();
@@ -40,6 +40,9 @@ public abstract class AbstractExcelWriteExecutor implements ExcelWriteExecutor {
         if (cellData.getFormula() != null && cellData.getFormula()) {
             cell.setCellFormula(cellData.getFormulaValue());
         }
+        if (cellData.getType() == null) {
+            cellData.setType(CellDataTypeEnum.EMPTY);
+        }
         switch (cellData.getType()) {
             case STRING:
                 cell.setCellValue(cellData.getStringValue());
@@ -56,15 +59,16 @@ public abstract class AbstractExcelWriteExecutor implements ExcelWriteExecutor {
             case EMPTY:
                 return cellData;
             default:
-                throw new ExcelDataConvertException("Not supported data:" + value + " return type:" + cell.getCellType()
-                    + "at row:" + cell.getRow().getRowNum());
+                throw new ExcelDataConvertException(cell.getRow().getRowNum(), cell.getColumnIndex(), cellData,
+                    excelContentProperty, "Not supported data:" + value + " return type:" + cell.getCellType()
+                        + "at row:" + cell.getRow().getRowNum());
         }
     }
 
     protected CellData convert(WriteHolder currentWriteHolder, Class clazz, Cell cell, Object value,
         ExcelContentProperty excelContentProperty) {
         if (value == null) {
-            return new CellData();
+            return new CellData(CellDataTypeEnum.EMPTY);
         }
         // This means that the user has defined the data.
         if (value instanceof CellData) {
@@ -99,7 +103,8 @@ public abstract class AbstractExcelWriteExecutor implements ExcelWriteExecutor {
             converter = currentWriteHolder.converterMap().get(ConverterKeyBuild.buildKey(clazz));
         }
         if (converter == null) {
-            throw new ExcelDataConvertException(
+            throw new ExcelDataConvertException(cell.getRow().getRowNum(), cell.getColumnIndex(),
+                new CellData(CellDataTypeEnum.EMPTY), excelContentProperty,
                 "Can not find 'Converter' support class " + clazz.getSimpleName() + ".");
         }
         CellData cellData;
@@ -107,11 +112,13 @@ public abstract class AbstractExcelWriteExecutor implements ExcelWriteExecutor {
             cellData =
                 converter.convertToExcelData(value, excelContentProperty, currentWriteHolder.globalConfiguration());
         } catch (Exception e) {
-            throw new ExcelDataConvertException("Convert data:" + value + " error,at row:" + cell.getRow().getRowNum(),
-                e);
+            throw new ExcelDataConvertException(cell.getRow().getRowNum(), cell.getColumnIndex(),
+                new CellData(CellDataTypeEnum.EMPTY), excelContentProperty,
+                "Convert data:" + value + " error,at row:" + cell.getRow().getRowNum(), e);
         }
         if (cellData == null || cellData.getType() == null) {
-            throw new ExcelDataConvertException(
+            throw new ExcelDataConvertException(cell.getRow().getRowNum(), cell.getColumnIndex(),
+                new CellData(CellDataTypeEnum.EMPTY), excelContentProperty,
                 "Convert data:" + value + " return null,at row:" + cell.getRow().getRowNum());
         }
         return cellData;

src/main/java/com/alibaba/excel/write/executor/ExcelWriteAddExecutor.java

@@ -2,7 +2,6 @@ package com.alibaba.excel.write.executor;
 
 import java.lang.reflect.Field;
 import java.util.ArrayList;
-import java.util.Collections;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
@@ -13,10 +12,10 @@ import org.apache.poi.ss.usermodel.Row;
 
 import com.alibaba.excel.context.WriteContext;
 import com.alibaba.excel.enums.HeadKindEnum;
-import com.alibaba.excel.metadata.BaseRowModel;
 import com.alibaba.excel.metadata.CellData;
 import com.alibaba.excel.metadata.Head;
 import com.alibaba.excel.metadata.property.ExcelContentProperty;
+import com.alibaba.excel.util.ClassUtils;
 import com.alibaba.excel.util.CollectionUtils;
 import com.alibaba.excel.util.WorkBookUtil;
 import com.alibaba.excel.util.WriteHandlerUtils;
@@ -98,6 +97,9 @@ public class ExcelWriteAddExecutor extends AbstractExcelWriteExecutor {
 
     private void doAddBasicTypeToExcel(List<Object> oneRowData, Head head, Row row, int relativeRowIndex, int dataIndex,
         int cellIndex) {
+        if (writeContext.currentWriteHolder().ignore(null, cellIndex)) {
+            return;
+        }
         WriteHandlerUtils.beforeCellCreate(writeContext, row, head, cellIndex, relativeRowIndex, Boolean.FALSE);
         Cell cell = WorkBookUtil.createCell(row, cellIndex);
         WriteHandlerUtils.afterCellCreate(writeContext, cell, head, relativeRowIndex, Boolean.FALSE);
@@ -121,6 +123,9 @@ public class ExcelWriteAddExecutor extends AbstractExcelWriteExecutor {
                 cellIndex = entry.getKey();
                 ExcelContentProperty excelContentProperty = entry.getValue();
                 String name = excelContentProperty.getField().getName();
+                if (writeContext.currentWriteHolder().ignore(name, cellIndex)) {
+                    continue;
+                }
                 if (!beanMap.containsKey(name)) {
                     continue;
                 }
@@ -147,18 +152,16 @@ public class ExcelWriteAddExecutor extends AbstractExcelWriteExecutor {
         for (Field field : fieldList) {
             String filedName = field.getName();
             boolean uselessData = !beanMap.containsKey(filedName) || beanMapHandledSet.contains(filedName)
-                || ignoreMap.containsKey(filedName);
+                || ignoreMap.containsKey(filedName) || writeContext.currentWriteHolder().ignore(filedName, cellIndex);
             if (uselessData) {
                 continue;
             }
             Object value = beanMap.get(filedName);
-            if (value == null) {
-                continue;
-            }
             WriteHandlerUtils.beforeCellCreate(writeContext, row, null, cellIndex, relativeRowIndex, Boolean.FALSE);
             Cell cell = WorkBookUtil.createCell(row, cellIndex++);
             WriteHandlerUtils.afterCellCreate(writeContext, cell, null, relativeRowIndex, Boolean.FALSE);
-            CellData cellData = converterAndSet(currentWriteHolder, value.getClass(), cell, value, null);
+            CellData cellData =
+                converterAndSet(currentWriteHolder, value == null ? null : value.getClass(), cell, value, null);
             WriteHandlerUtils.afterCellDispose(writeContext, cellData, cell, null, relativeRowIndex, Boolean.FALSE);
         }
     }
@@ -167,13 +170,8 @@ public class ExcelWriteAddExecutor extends AbstractExcelWriteExecutor {
         if (!fieldList.isEmpty()) {
             return;
         }
-        Class tempClass = clazz;
-        while (tempClass != null) {
-            if (tempClass != BaseRowModel.class) {
-                Collections.addAll(fieldList, tempClass.getDeclaredFields());
-            }
-            tempClass = tempClass.getSuperclass();
-        }
+        ClassUtils.declaredFields(clazz, fieldList,
+            writeContext.writeWorkbookHolder().getWriteWorkbook().getConvertAllFiled());
     }
 
 }

src/main/java/com/alibaba/excel/write/executor/ExcelWriteFillExecutor.java

@@ -3,21 +3,24 @@ package com.alibaba.excel.write.executor;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashMap;
+import java.util.HashSet;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
+import java.util.Set;
 
 import org.apache.poi.ss.usermodel.Cell;
 import org.apache.poi.ss.usermodel.CellStyle;
+import org.apache.poi.ss.usermodel.CellType;
 import org.apache.poi.ss.usermodel.Row;
 import org.apache.poi.ss.usermodel.Sheet;
 
 import com.alibaba.excel.context.WriteContext;
+import com.alibaba.excel.enums.CellDataTypeEnum;
 import com.alibaba.excel.enums.WriteDirectionEnum;
 import com.alibaba.excel.enums.WriteTemplateAnalysisCellTypeEnum;
 import com.alibaba.excel.exception.ExcelGenerateException;
 import com.alibaba.excel.metadata.CellData;
-import com.alibaba.excel.metadata.Head;
 import com.alibaba.excel.metadata.property.ExcelContentProperty;
 import com.alibaba.excel.util.CollectionUtils;
 import com.alibaba.excel.util.StringUtils;
@@ -55,12 +58,18 @@ public class ExcelWriteFillExecutor extends AbstractExcelWriteExecutor {
      */
     private Map<Integer, Map<AnalysisCell, CellStyle>> collectionFieldStyleCache =
         new HashMap<Integer, Map<AnalysisCell, CellStyle>>(8);
+    /**
+     * Row height cache for collection
+     */
+    private Map<Integer, Short> collectionRowHeightCache = new HashMap<Integer, Short>(8);
     /**
      * Last index cache for collection fields
      */
     private Map<Integer, Map<AnalysisCell, Integer>> collectionLastIndexCache =
         new HashMap<Integer, Map<AnalysisCell, Integer>>(8);
 
+    private Map<Integer, Integer> relativeRowIndexMap = new HashMap<Integer, Integer>(8);
+
     public ExcelWriteFillExecutor(WriteContext writeContext) {
         super(writeContext);
     }
@@ -81,10 +90,10 @@ public class ExcelWriteFillExecutor extends AbstractExcelWriteExecutor {
                 shiftRows(collectionData.size(), analysisCellList);
             }
             while (iterator.hasNext()) {
-                doFill(analysisCellList, iterator.next(), fillConfig);
+                doFill(analysisCellList, iterator.next(), fillConfig, getRelativeRowIndex());
             }
         } else {
-            doFill(readTemplateData(templateAnalysisCache), data, fillConfig);
+            doFill(readTemplateData(templateAnalysisCache), data, fillConfig, null);
         }
     }
 
@@ -119,7 +128,10 @@ public class ExcelWriteFillExecutor extends AbstractExcelWriteExecutor {
         if (collectionLastIndexMap == null) {
             number--;
         }
-        sheet.shiftRows(maxRowIndex + 1, lastRowIndex, number);
+        if (number <= 0) {
+            return;
+        }
+        sheet.shiftRows(maxRowIndex + 1, lastRowIndex, number, true, false);
         for (AnalysisCell analysisCell : templateAnalysisCache.get(writeContext.writeSheetHolder().getSheetNo())) {
             if (analysisCell.getRowIndex() > maxRowIndex) {
                 analysisCell.setRowIndex(analysisCell.getRowIndex() + number);
@@ -127,7 +139,8 @@ public class ExcelWriteFillExecutor extends AbstractExcelWriteExecutor {
         }
     }
 
-    private void doFill(List<AnalysisCell> analysisCellList, Object oneRowData, FillConfig fillConfig) {
+    private void doFill(List<AnalysisCell> analysisCellList, Object oneRowData, FillConfig fillConfig,
+        Integer relativeRowIndex) {
         Map dataMap;
         if (oneRowData instanceof Map) {
             dataMap = (Map)oneRowData;
@@ -141,19 +154,25 @@ public class ExcelWriteFillExecutor extends AbstractExcelWriteExecutor {
             Cell cell = getOneCell(analysisCell, fillConfig);
             if (analysisCell.getOnlyOneVariable()) {
                 String variable = analysisCell.getVariableList().get(0);
+                if (writeContext.currentWriteHolder().ignore(variable, analysisCell.getColumnIndex())) {
+                    continue;
+                }
                 if (!dataMap.containsKey(variable)) {
                     continue;
                 }
                 Object value = dataMap.get(variable);
                 CellData cellData = converterAndSet(writeSheetHolder, value == null ? null : value.getClass(), cell,
                     value, fieldNameContentPropertyMap.get(variable));
-                WriteHandlerUtils.afterCellDispose(writeContext, cellData, cell, null, null, Boolean.FALSE);
+                WriteHandlerUtils.afterCellDispose(writeContext, cellData, cell, null, relativeRowIndex, Boolean.FALSE);
             } else {
                 StringBuilder cellValueBuild = new StringBuilder();
                 int index = 0;
                 List<CellData> cellDataList = new ArrayList<CellData>();
                 for (String variable : analysisCell.getVariableList()) {
                     cellValueBuild.append(analysisCell.getPrepareDataList().get(index++));
+                    if (writeContext.currentWriteHolder().ignore(variable, analysisCell.getColumnIndex())) {
+                        continue;
+                    }
                     if (!dataMap.containsKey(variable)) {
                         continue;
                     }
@@ -161,27 +180,43 @@ public class ExcelWriteFillExecutor extends AbstractExcelWriteExecutor {
                     CellData cellData = convert(writeSheetHolder, value == null ? null : value.getClass(), cell, value,
                         fieldNameContentPropertyMap.get(variable));
                     cellDataList.add(cellData);
-                    switch (cellData.getType()) {
-                        case STRING:
-                            cellValueBuild.append(cellData.getStringValue());
-                            break;
-                        case BOOLEAN:
-                            cellValueBuild.append(cellData.getBooleanValue());
-                            break;
-                        case NUMBER:
-                            cellValueBuild.append(cellData.getNumberValue());
-                            break;
-                        default:
-                            break;
+                    CellDataTypeEnum type = cellData.getType();
+                    if (type != null) {
+                        switch (type) {
+                            case STRING:
+                                cellValueBuild.append(cellData.getStringValue());
+                                break;
+                            case BOOLEAN:
+                                cellValueBuild.append(cellData.getBooleanValue());
+                                break;
+                            case NUMBER:
+                                cellValueBuild.append(cellData.getNumberValue());
+                                break;
+                            default:
+                                break;
+                        }
                     }
                 }
                 cellValueBuild.append(analysisCell.getPrepareDataList().get(index));
                 cell.setCellValue(cellValueBuild.toString());
-                WriteHandlerUtils.afterCellDispose(writeContext, cellDataList, cell, null, null, Boolean.FALSE);
+                WriteHandlerUtils.afterCellDispose(writeContext, cellDataList, cell, null, relativeRowIndex,
+                    Boolean.FALSE);
             }
         }
     }
 
+    private Integer getRelativeRowIndex() {
+        Integer sheetNo = writeContext.writeSheetHolder().getSheetNo();
+        Integer relativeRowIndex = relativeRowIndexMap.get(sheetNo);
+        if (relativeRowIndex == null) {
+            relativeRowIndex = 0;
+        } else {
+            relativeRowIndex++;
+        }
+        relativeRowIndexMap.put(sheetNo, relativeRowIndex);
+        return relativeRowIndex;
+    }
+
     private Cell getOneCell(AnalysisCell analysisCell, FillConfig fillConfig) {
         Sheet cachedSheet = writeContext.writeSheetHolder().getCachedSheet();
         if (WriteTemplateAnalysisCellTypeEnum.COMMON.equals(analysisCell.getCellType())) {
@@ -234,7 +269,10 @@ public class ExcelWriteFillExecutor extends AbstractExcelWriteExecutor {
                 } else {
                     row = sheet.createRow(lastRowIndex);
                 }
+                checkRowHeight(analysisCell, fillConfig, isOriginalCell, row, sheetNo);
                 WriteHandlerUtils.afterRowCreate(writeContext, row, null, Boolean.FALSE);
+            } else {
+                checkRowHeight(analysisCell, fillConfig, isOriginalCell, row, sheetNo);
             }
         }
         Cell cell = row.getCell(lastColumnIndex);
@@ -260,6 +298,21 @@ public class ExcelWriteFillExecutor extends AbstractExcelWriteExecutor {
         return cell;
     }
 
+    private void checkRowHeight(AnalysisCell analysisCell, FillConfig fillConfig, boolean isOriginalCell, Row row,
+        Integer sheetNo) {
+        if (!analysisCell.getFirstColumn() || !WriteDirectionEnum.VERTICAL.equals(fillConfig.getDirection())) {
+            return;
+        }
+        if (isOriginalCell) {
+            collectionRowHeightCache.put(sheetNo, row.getHeight());
+            return;
+        }
+        Short rowHeight = collectionRowHeightCache.get(sheetNo);
+        if (rowHeight != null) {
+            row.setHeight(rowHeight);
+        }
+    }
+
     private List<AnalysisCell> readTemplateData(Map<Integer, List<AnalysisCell>> analysisCache) {
         Integer sheetNo = writeContext.writeSheetHolder().getSheetNo();
         List<AnalysisCell> analysisCellList = analysisCache.get(sheetNo);
@@ -269,6 +322,7 @@ public class ExcelWriteFillExecutor extends AbstractExcelWriteExecutor {
         Sheet sheet = writeContext.writeSheetHolder().getCachedSheet();
         analysisCellList = new ArrayList<AnalysisCell>();
         List<AnalysisCell> collectionAnalysisCellList = new ArrayList<AnalysisCell>();
+        Set<Integer> firstColumnCache = new HashSet<Integer>();
         for (int i = 0; i <= sheet.getLastRowNum(); i++) {
             Row row = sheet.getRow(i);
             if (row == null) {
@@ -279,7 +333,12 @@ public class ExcelWriteFillExecutor extends AbstractExcelWriteExecutor {
                 if (cell == null) {
                     continue;
                 }
-                prepareData(cell.getStringCellValue(), analysisCellList, collectionAnalysisCellList, i, j);
+                String preparedData =
+                    prepareData(cell, analysisCellList, collectionAnalysisCellList, i, j, firstColumnCache);
+                // Prevent empty data from not being replaced
+                if (preparedData != null) {
+                    cell.setCellValue(preparedData);
+                }
             }
         }
         templateAnalysisCache.put(sheetNo, analysisCellList);
@@ -287,12 +346,29 @@ public class ExcelWriteFillExecutor extends AbstractExcelWriteExecutor {
         return analysisCache.get(sheetNo);
     }
 
-    private void prepareData(String value, List<AnalysisCell> analysisCellList,
-        List<AnalysisCell> collectionAnalysisCellList, int rowIndex, int columnIndex) {
+    /**
+     * To prepare data
+     *
+     * @param cell
+     * @param analysisCellList
+     * @param collectionAnalysisCellList
+     * @param rowIndex
+     * @param columnIndex
+     * @param firstColumnCache
+     * @return Returns the data that the cell needs to replace
+     */
+    private String prepareData(Cell cell, List<AnalysisCell> analysisCellList,
+        List<AnalysisCell> collectionAnalysisCellList, int rowIndex, int columnIndex, Set<Integer> firstColumnCache) {
+        if (!CellType.STRING.equals(cell.getCellTypeEnum())) {
+            return null;
+        }
+        String value = cell.getStringCellValue();
         if (StringUtils.isEmpty(value)) {
-            return;
+            return null;
         }
+        StringBuilder preparedData = new StringBuilder();
         AnalysisCell analysisCell = null;
+
         int startIndex = 0;
         int length = value.length();
         int lastPrepareDataIndex = 0;
@@ -322,15 +398,7 @@ public class ExcelWriteFillExecutor extends AbstractExcelWriteExecutor {
                 }
             }
             if (analysisCell == null) {
-                analysisCell = new AnalysisCell();
-                analysisCell.setRowIndex(rowIndex);
-                analysisCell.setColumnIndex(columnIndex);
-                analysisCell.setOnlyOneVariable(Boolean.TRUE);
-                List<String> variableList = new ArrayList<String>();
-                analysisCell.setVariableList(variableList);
-                List<String> prepareDataList = new ArrayList<String>();
-                analysisCell.setPrepareDataList(prepareDataList);
-                analysisCell.setCellType(WriteTemplateAnalysisCellTypeEnum.COMMON);
+                analysisCell = initAnalysisCell(rowIndex, columnIndex);
             }
             String variable = value.substring(prefixIndex + 1, suffixIndex);
             if (StringUtils.isEmpty(variable)) {
@@ -347,12 +415,20 @@ public class ExcelWriteFillExecutor extends AbstractExcelWriteExecutor {
             if (lastPrepareDataIndex == prefixIndex) {
                 analysisCell.getPrepareDataList().add(StringUtils.EMPTY);
             } else {
-                analysisCell.getPrepareDataList()
-                    .add(convertPrepareData(value.substring(lastPrepareDataIndex, prefixIndex)));
+                String data = convertPrepareData(value.substring(lastPrepareDataIndex, prefixIndex));
+                preparedData.append(data);
+                analysisCell.getPrepareDataList().add(data);
                 analysisCell.setOnlyOneVariable(Boolean.FALSE);
             }
             lastPrepareDataIndex = suffixIndex + 1;
         }
+        return dealAnalysisCell(analysisCell, value, rowIndex, lastPrepareDataIndex, length, analysisCellList,
+            collectionAnalysisCellList, firstColumnCache, preparedData);
+    }
+
+    private String dealAnalysisCell(AnalysisCell analysisCell, String value, int rowIndex, int lastPrepareDataIndex,
+        int length, List<AnalysisCell> analysisCellList, List<AnalysisCell> collectionAnalysisCellList,
+        Set<Integer> firstColumnCache, StringBuilder preparedData) {
         if (analysisCell != null) {
             if (lastPrepareDataIndex == length) {
                 analysisCell.getPrepareDataList().add(StringUtils.EMPTY);
@@ -363,9 +439,29 @@ public class ExcelWriteFillExecutor extends AbstractExcelWriteExecutor {
             if (WriteTemplateAnalysisCellTypeEnum.COMMON.equals(analysisCell.getCellType())) {
                 analysisCellList.add(analysisCell);
             } else {
+                if (!firstColumnCache.contains(rowIndex)) {
+                    analysisCell.setFirstColumn(Boolean.TRUE);
+                    firstColumnCache.add(rowIndex);
+                }
                 collectionAnalysisCellList.add(analysisCell);
             }
+            return preparedData.toString();
         }
+        return null;
+    }
+
+    private AnalysisCell initAnalysisCell(Integer rowIndex, Integer columnIndex) {
+        AnalysisCell analysisCell = new AnalysisCell();
+        analysisCell.setRowIndex(rowIndex);
+        analysisCell.setColumnIndex(columnIndex);
+        analysisCell.setOnlyOneVariable(Boolean.TRUE);
+        List<String> variableList = new ArrayList<String>();
+        analysisCell.setVariableList(variableList);
+        List<String> prepareDataList = new ArrayList<String>();
+        analysisCell.setPrepareDataList(prepareDataList);
+        analysisCell.setCellType(WriteTemplateAnalysisCellTypeEnum.COMMON);
+        analysisCell.setFirstColumn(Boolean.FALSE);
+        return analysisCell;
     }
 
     private String convertPrepareData(String prepareData) {

src/main/java/com/alibaba/excel/write/merge/AbstractMergeStrategy.java

@@ -45,5 +45,5 @@ public abstract class AbstractMergeStrategy implements CellWriteHandler {
      * @param head
      * @param relativeRowIndex
      */
-    protected abstract void merge(Sheet sheet, Cell cell, Head head, int relativeRowIndex);
+    protected abstract void merge(Sheet sheet, Cell cell, Head head, Integer relativeRowIndex);
 }

src/main/java/com/alibaba/excel/write/merge/LoopMergeStrategy.java

@@ -13,25 +13,46 @@ import com.alibaba.excel.metadata.Head;
  */
 public class LoopMergeStrategy extends AbstractMergeStrategy {
     private int eachRow;
+    private int columnCount;
     private int columnIndex;
 
     public LoopMergeStrategy(int eachRow, int columnIndex) {
+        this(eachRow, 1, columnIndex);
+    }
+
+    public LoopMergeStrategy(int eachRow, int columnCount, int columnIndex) {
         if (eachRow < 1) {
             throw new IllegalArgumentException("EachRows must be greater than 1");
         }
+        if (columnCount < 1) {
+            throw new IllegalArgumentException("ColumnCount must be greater than 1");
+        }
+        if (columnCount == 1 && eachRow == 1) {
+            throw new IllegalArgumentException("ColumnCount or eachRows must be greater than 1");
+        }
         if (columnIndex < 0) {
             throw new IllegalArgumentException("ColumnIndex must be greater than 0");
         }
         this.eachRow = eachRow;
+        this.columnCount = columnCount;
         this.columnIndex = columnIndex;
     }
 
     @Override
-    protected void merge(Sheet sheet, Cell cell, Head head, int relativeRowIndex) {
-        if (head.getColumnIndex() == columnIndex && relativeRowIndex % eachRow == 0) {
+    protected void merge(Sheet sheet, Cell cell, Head head, Integer relativeRowIndex) {
+        if (relativeRowIndex == null) {
+            return;
+        }
+        Integer currentColumnIndex;
+        if (head != null) {
+            currentColumnIndex = head.getColumnIndex();
+        } else {
+            currentColumnIndex = cell.getColumnIndex();
+        }
+        if (currentColumnIndex == columnIndex && relativeRowIndex % eachRow == 0) {
             CellRangeAddress cellRangeAddress = new CellRangeAddress(cell.getRowIndex(),
-                cell.getRowIndex() + eachRow - 1, cell.getColumnIndex(), cell.getColumnIndex());
-            sheet.addMergedRegion(cellRangeAddress);
+                cell.getRowIndex() + eachRow - 1, cell.getColumnIndex(), cell.getColumnIndex() + columnCount - 1);
+            sheet.addMergedRegionUnsafe(cellRangeAddress);
         }
     }
 }

src/main/java/com/alibaba/excel/write/merge/OnceAbsoluteMergeStrategy.java

@@ -29,11 +29,11 @@ public class OnceAbsoluteMergeStrategy extends AbstractMergeStrategy {
     }
 
     @Override
-    protected void merge(Sheet sheet, Cell cell, Head head, int relativeRowIndex) {
+    protected void merge(Sheet sheet, Cell cell, Head head, Integer relativeRowIndex) {
         if (cell.getRowIndex() == firstRowIndex && cell.getColumnIndex() == firstColumnIndex) {
             CellRangeAddress cellRangeAddress =
                 new CellRangeAddress(firstRowIndex, lastRowIndex, firstColumnIndex, lastColumnIndex);
-            sheet.addMergedRegion(cellRangeAddress);
+            sheet.addMergedRegionUnsafe(cellRangeAddress);
         }
     }
 }

src/main/java/com/alibaba/excel/write/metadata/WriteBasicParameter.java

@@ -1,6 +1,7 @@
 package com.alibaba.excel.write.metadata;
 
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.List;
 
 import com.alibaba.excel.metadata.BasicParameter;
@@ -28,6 +29,26 @@ public class WriteBasicParameter extends BasicParameter {
      * Use the default style.Default is true.
      */
     private Boolean useDefaultStyle;
+    /**
+     * Whether to automatically merge headers.Default is true.
+     */
+    private Boolean automaticMergeHead;
+    /**
+     * Ignore the custom columns.
+     */
+    private Collection<Integer> excludeColumnIndexes;
+    /**
+     * Ignore the custom columns.
+     */
+    private Collection<String> excludeColumnFiledNames;
+    /**
+     * Only output the custom columns.
+     */
+    private Collection<Integer> includeColumnIndexes;
+    /**
+     * Only output the custom columns.
+     */
+    private Collection<String> includeColumnFiledNames;
 
     public Integer getRelativeHeadRowIndex() {
         return relativeHeadRowIndex;
@@ -60,4 +81,45 @@ public class WriteBasicParameter extends BasicParameter {
     public void setUseDefaultStyle(Boolean useDefaultStyle) {
         this.useDefaultStyle = useDefaultStyle;
     }
+
+    public Boolean getAutomaticMergeHead() {
+        return automaticMergeHead;
+    }
+
+    public void setAutomaticMergeHead(Boolean automaticMergeHead) {
+        this.automaticMergeHead = automaticMergeHead;
+    }
+
+    public Collection<Integer> getExcludeColumnIndexes() {
+        return excludeColumnIndexes;
+    }
+
+    public void setExcludeColumnIndexes(Collection<Integer> excludeColumnIndexes) {
+        this.excludeColumnIndexes = excludeColumnIndexes;
+    }
+
+    public Collection<String> getExcludeColumnFiledNames() {
+        return excludeColumnFiledNames;
+    }
+
+    public void setExcludeColumnFiledNames(Collection<String> excludeColumnFiledNames) {
+        this.excludeColumnFiledNames = excludeColumnFiledNames;
+    }
+
+    public Collection<Integer> getIncludeColumnIndexes() {
+        return includeColumnIndexes;
+    }
+
+    public void setIncludeColumnIndexes(Collection<Integer> includeColumnIndexes) {
+        this.includeColumnIndexes = includeColumnIndexes;
+    }
+
+    public Collection<String> getIncludeColumnFiledNames() {
+        return includeColumnFiledNames;
+    }
+
+    public void setIncludeColumnFiledNames(Collection<String> includeColumnFiledNames) {
+        this.includeColumnFiledNames = includeColumnFiledNames;
+    }
+
 }

src/main/java/com/alibaba/excel/write/metadata/WriteWorkbook.java

@@ -43,7 +43,7 @@ public class WriteWorkbook extends WriteBasicParameter {
      */
     private File templateFile;
     /**
-     * Default trueuseDefaultStyle
+     * Default true.
      */
     private Boolean autoCloseStream;
     /**
@@ -57,6 +57,16 @@ public class WriteWorkbook extends WriteBasicParameter {
      *
      */
     private String password;
+    /**
+     * Write excel in memory. Default false,the cache file is created and finally written to excel.
+     * <p>
+     * Comment and RichTextString are only supported in memory mode.
+     */
+    private Boolean inMemory;
+    /**
+     * Excel is also written in the event of an exception being thrown.The default false.
+     */
+    private Boolean writeExcelOnException;
     /**
      * The default is all excel objects.Default is true.
      * <p>
@@ -155,4 +165,20 @@ public class WriteWorkbook extends WriteBasicParameter {
     public void setPassword(String password) {
         this.password = password;
     }
+
+    public Boolean getInMemory() {
+        return inMemory;
+    }
+
+    public void setInMemory(Boolean inMemory) {
+        this.inMemory = inMemory;
+    }
+
+    public Boolean getWriteExcelOnException() {
+        return writeExcelOnException;
+    }
+
+    public void setWriteExcelOnException(Boolean writeExcelOnException) {
+        this.writeExcelOnException = writeExcelOnException;
+    }
 }

src/main/java/com/alibaba/excel/write/metadata/fill/AnalysisCell.java

@@ -16,6 +16,7 @@ public class AnalysisCell {
     private List<String> prepareDataList;
     private Boolean onlyOneVariable;
     private WriteTemplateAnalysisCellTypeEnum cellType;
+    private Boolean firstColumn;
 
     public int getColumnIndex() {
         return columnIndex;
@@ -65,6 +66,14 @@ public class AnalysisCell {
         this.cellType = cellType;
     }
 
+    public Boolean getFirstColumn() {
+        return firstColumn;
+    }
+
+    public void setFirstColumn(Boolean firstColumn) {
+        this.firstColumn = firstColumn;
+    }
+
     @Override
     public boolean equals(Object o) {
         if (this == o) {

src/main/java/com/alibaba/excel/write/metadata/holder/AbstractWriteHolder.java

@@ -1,6 +1,7 @@
 package com.alibaba.excel.write.metadata.holder;
 
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
@@ -65,6 +66,26 @@ public abstract class AbstractWriteHolder extends AbstractHolder implements Writ
      * Use the default style.Default is true.
      */
     private Boolean useDefaultStyle;
+    /**
+     * Whether to automatically merge headers.Default is true.
+     */
+    private Boolean automaticMergeHead;
+    /**
+     * Ignore the custom columns.
+     */
+    private Collection<Integer> excludeColumnIndexes;
+    /**
+     * Ignore the custom columns.
+     */
+    private Collection<String> excludeColumnFiledNames;
+    /**
+     * Only output the custom columns.
+     */
+    private Collection<Integer> includeColumnIndexes;
+    /**
+     * Only output the custom columns.
+     */
+    private Collection<String> includeColumnFiledNames;
 
     public AbstractWriteHolder(WriteBasicParameter writeBasicParameter, AbstractWriteHolder parentAbstractWriteHolder,
         Boolean convertAllFiled) {
@@ -110,8 +131,39 @@ public abstract class AbstractWriteHolder extends AbstractHolder implements Writ
             this.useDefaultStyle = writeBasicParameter.getUseDefaultStyle();
         }
 
+        if (writeBasicParameter.getAutomaticMergeHead() == null) {
+            if (parentAbstractWriteHolder == null) {
+                this.automaticMergeHead = Boolean.TRUE;
+            } else {
+                this.automaticMergeHead = parentAbstractWriteHolder.getAutomaticMergeHead();
+            }
+        } else {
+            this.automaticMergeHead = writeBasicParameter.getAutomaticMergeHead();
+        }
+
+        if (writeBasicParameter.getExcludeColumnFiledNames() == null && parentAbstractWriteHolder != null) {
+            this.excludeColumnFiledNames = parentAbstractWriteHolder.getExcludeColumnFiledNames();
+        } else {
+            this.excludeColumnFiledNames = writeBasicParameter.getExcludeColumnFiledNames();
+        }
+        if (writeBasicParameter.getExcludeColumnIndexes() == null && parentAbstractWriteHolder != null) {
+            this.excludeColumnIndexes = parentAbstractWriteHolder.getExcludeColumnIndexes();
+        } else {
+            this.excludeColumnIndexes = writeBasicParameter.getExcludeColumnIndexes();
+        }
+        if (writeBasicParameter.getIncludeColumnFiledNames() == null && parentAbstractWriteHolder != null) {
+            this.includeColumnFiledNames = parentAbstractWriteHolder.getIncludeColumnFiledNames();
+        } else {
+            this.includeColumnFiledNames = writeBasicParameter.getIncludeColumnFiledNames();
+        }
+        if (writeBasicParameter.getIncludeColumnIndexes() == null && parentAbstractWriteHolder != null) {
+            this.includeColumnIndexes = parentAbstractWriteHolder.getIncludeColumnIndexes();
+        } else {
+            this.includeColumnIndexes = writeBasicParameter.getIncludeColumnIndexes();
+        }
+
         // Initialization property
-        this.excelWriteHeadProperty = new ExcelWriteHeadProperty(getClazz(), getHead(), convertAllFiled);
+        this.excelWriteHeadProperty = new ExcelWriteHeadProperty(this, getClazz(), getHead(), convertAllFiled);
 
         // Compatible with old code
         compatibleOldCode(writeBasicParameter);
@@ -148,7 +200,6 @@ public abstract class AbstractWriteHolder extends AbstractHolder implements Writ
                 getConverterMap().put(ConverterKeyBuild.buildKey(converter.supportJavaTypeKey()), converter);
             }
         }
-
     }
 
     /**
@@ -214,7 +265,7 @@ public abstract class AbstractWriteHolder extends AbstractHolder implements Writ
         }
         writeBasicParameter.getCustomWriteHandlerList().add(new AbstractHeadColumnWidthStyleStrategy() {
             @Override
-            protected Integer columnWidth(Head head) {
+            protected Integer columnWidth(Head head, Integer columnIndex) {
                 if (columnWidthMap.containsKey(head.getColumnIndex())) {
                     return columnWidthMap.get(head.getColumnIndex()) / 256;
                 }
@@ -263,7 +314,7 @@ public abstract class AbstractWriteHolder extends AbstractHolder implements Writ
     private void dealColumnWidth(List<WriteHandler> handlerList) {
         WriteHandler columnWidthStyleStrategy = new AbstractHeadColumnWidthStyleStrategy() {
             @Override
-            protected Integer columnWidth(Head head) {
+            protected Integer columnWidth(Head head, Integer columnIndex) {
                 if (head == null) {
                     return null;
                 }
@@ -343,6 +394,27 @@ public abstract class AbstractWriteHolder extends AbstractHolder implements Writ
         return result;
     }
 
+    @Override
+    public boolean ignore(String fieldName, Integer columnIndex) {
+        if (fieldName != null) {
+            if (includeColumnFiledNames != null && !includeColumnFiledNames.contains(fieldName)) {
+                return true;
+            }
+            if (excludeColumnFiledNames != null && excludeColumnFiledNames.contains(fieldName)) {
+                return true;
+            }
+        }
+        if (columnIndex != null) {
+            if (includeColumnIndexes != null && !includeColumnIndexes.contains(columnIndex)) {
+                return true;
+            }
+            if (excludeColumnIndexes != null && excludeColumnIndexes.contains(columnIndex)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
     public Boolean getNeedHead() {
         return needHead;
     }
@@ -383,6 +455,46 @@ public abstract class AbstractWriteHolder extends AbstractHolder implements Writ
         this.useDefaultStyle = useDefaultStyle;
     }
 
+    public Boolean getAutomaticMergeHead() {
+        return automaticMergeHead;
+    }
+
+    public void setAutomaticMergeHead(Boolean automaticMergeHead) {
+        this.automaticMergeHead = automaticMergeHead;
+    }
+
+    public Collection<Integer> getExcludeColumnIndexes() {
+        return excludeColumnIndexes;
+    }
+
+    public void setExcludeColumnIndexes(Collection<Integer> excludeColumnIndexes) {
+        this.excludeColumnIndexes = excludeColumnIndexes;
+    }
+
+    public Collection<String> getExcludeColumnFiledNames() {
+        return excludeColumnFiledNames;
+    }
+
+    public void setExcludeColumnFiledNames(Collection<String> excludeColumnFiledNames) {
+        this.excludeColumnFiledNames = excludeColumnFiledNames;
+    }
+
+    public Collection<Integer> getIncludeColumnIndexes() {
+        return includeColumnIndexes;
+    }
+
+    public void setIncludeColumnIndexes(Collection<Integer> includeColumnIndexes) {
+        this.includeColumnIndexes = includeColumnIndexes;
+    }
+
+    public Collection<String> getIncludeColumnFiledNames() {
+        return includeColumnFiledNames;
+    }
+
+    public void setIncludeColumnFiledNames(Collection<String> includeColumnFiledNames) {
+        this.includeColumnFiledNames = includeColumnFiledNames;
+    }
+
     @Override
     public ExcelWriteHeadProperty excelWriteHeadProperty() {
         return getExcelWriteHeadProperty();
@@ -402,4 +514,9 @@ public abstract class AbstractWriteHolder extends AbstractHolder implements Writ
     public int relativeHeadRowIndex() {
         return getRelativeHeadRowIndex();
     }
+
+    @Override
+    public boolean automaticMergeHead() {
+        return getAutomaticMergeHead();
+    }
 }

src/main/java/com/alibaba/excel/write/metadata/holder/WriteHolder.java

@@ -28,6 +28,15 @@ public interface WriteHolder extends ConfigurationHolder {
      */
     Map<Class<? extends WriteHandler>, List<WriteHandler>> writeHandlerMap();
 
+    /**
+     * Is to determine if a field needs to be ignored
+     *
+     * @param fieldName
+     * @param columnIndex
+     * @return
+     */
+    boolean ignore(String fieldName, Integer columnIndex);
+
     /**
      * Whether a header is required for the currently operated cell
      *
@@ -35,6 +44,13 @@ public interface WriteHolder extends ConfigurationHolder {
      */
     boolean needHead();
 
+    /**
+     * Whether need automatic merge headers.
+     *
+     * @return
+     */
+    boolean automaticMergeHead();
+
     /**
      * Writes the head relative to the existing contents of the sheet. Indexes are zero-based.
      *

src/main/java/com/alibaba/excel/write/metadata/holder/WriteSheetHolder.java

@@ -156,6 +156,11 @@ public class WriteSheetHolder extends AbstractWriteHolder {
         int newRowIndex = 0;
         switch (writeLastRowTypeEnum) {
             case TEMPLATE_EMPTY:
+                newRowIndex = Math.max(sheet.getLastRowNum(), cachedSheet.getLastRowNum());
+                if (newRowIndex != 0 || cachedSheet.getRow(0) != null) {
+                    newRowIndex++;
+                }
+                break;
             case HAS_DATA:
                 newRowIndex = Math.max(sheet.getLastRowNum(), cachedSheet.getLastRowNum());
                 newRowIndex++;

src/main/java/com/alibaba/excel/write/metadata/holder/WriteWorkbookHolder.java

@@ -97,6 +97,16 @@ public class WriteWorkbookHolder extends AbstractWriteHolder {
      * Whether the encryption
      */
     private String password;
+    /**
+     * Write excel in memory. Default false,the cache file is created and finally written to excel.
+     * <p>
+     * Comment and RichTextString are only supported in memory mode.
+     */
+    private Boolean inMemory;
+    /**
+     * Excel is also written in the event of an exception being thrown.The default false.
+     */
+    private Boolean writeExcelOnException;
 
     public WriteWorkbookHolder(WriteWorkbook writeWorkbook) {
         super(writeWorkbook, null, writeWorkbook.getConvertAllFiled());
@@ -122,7 +132,10 @@ public class WriteWorkbookHolder extends AbstractWriteHolder {
             throw new ExcelGenerateException("Copy template failure.", e);
         }
         if (writeWorkbook.getExcelType() == null) {
-            if (file != null && file.getName().endsWith(ExcelTypeEnum.XLS.getValue())) {
+            boolean isXls = (file != null && file.getName().endsWith(ExcelTypeEnum.XLS.getValue()))
+                || (writeWorkbook.getTemplateFile() != null
+                    && writeWorkbook.getTemplateFile().getName().endsWith(ExcelTypeEnum.XLS.getValue()));
+            if (isXls) {
                 this.excelType = ExcelTypeEnum.XLS;
             } else {
                 this.excelType = ExcelTypeEnum.XLSX;
@@ -137,6 +150,16 @@ public class WriteWorkbookHolder extends AbstractWriteHolder {
         }
         this.hasBeenInitializedSheet = new HashMap<Integer, WriteSheetHolder>();
         this.password = writeWorkbook.getPassword();
+        if (writeWorkbook.getInMemory() == null) {
+            this.inMemory = Boolean.FALSE;
+        } else {
+            this.inMemory = writeWorkbook.getInMemory();
+        }
+        if (writeWorkbook.getWriteExcelOnException() == null) {
+            this.writeExcelOnException = Boolean.FALSE;
+        } else {
+            this.writeExcelOnException = writeWorkbook.getWriteExcelOnException();
+        }
     }
 
     private void copyTemplate() throws IOException {
@@ -146,7 +169,7 @@ public class WriteWorkbookHolder extends AbstractWriteHolder {
         byte[] templateFileByte = null;
         if (writeWorkbook.getTemplateFile() != null) {
             templateFileByte = FileUtils.readFileToByteArray(writeWorkbook.getTemplateFile());
-        } else if (writeWorkbook.getTemplateInputStream() == null) {
+        } else if (writeWorkbook.getTemplateInputStream() != null) {
             try {
                 templateFileByte = IoUtils.toByteArray(writeWorkbook.getTemplateInputStream());
             } finally {
@@ -262,6 +285,22 @@ public class WriteWorkbookHolder extends AbstractWriteHolder {
         this.password = password;
     }
 
+    public Boolean getInMemory() {
+        return inMemory;
+    }
+
+    public void setInMemory(Boolean inMemory) {
+        this.inMemory = inMemory;
+    }
+
+    public Boolean getWriteExcelOnException() {
+        return writeExcelOnException;
+    }
+
+    public void setWriteExcelOnException(Boolean writeExcelOnException) {
+        this.writeExcelOnException = writeExcelOnException;
+    }
+
     @Override
     public HolderEnum holderType() {
         return HolderEnum.WORKBOOK;

src/main/java/com/alibaba/excel/write/property/ExcelWriteHeadProperty.java

@@ -17,6 +17,7 @@ import com.alibaba.excel.enums.CellDataTypeEnum;
 import com.alibaba.excel.enums.HeadKindEnum;
 import com.alibaba.excel.metadata.CellRange;
 import com.alibaba.excel.metadata.Head;
+import com.alibaba.excel.metadata.Holder;
 import com.alibaba.excel.metadata.property.ColumnWidthProperty;
 import com.alibaba.excel.metadata.property.ExcelContentProperty;
 import com.alibaba.excel.metadata.property.ExcelHeadProperty;
@@ -31,8 +32,8 @@ public class ExcelWriteHeadProperty extends ExcelHeadProperty {
     private RowHeightProperty headRowHeightProperty;
     private RowHeightProperty contentRowHeightProperty;
 
-    public ExcelWriteHeadProperty(Class headClazz, List<List<String>> head, Boolean convertAllFiled) {
-        super(headClazz, head, convertAllFiled);
+    public ExcelWriteHeadProperty(Holder holder, Class headClazz, List<List<String>> head, Boolean convertAllFiled) {
+        super(holder, headClazz, head, convertAllFiled);
         if (getHeadKind() != HeadKindEnum.CLASS) {
             return;
         }

src/main/java/com/alibaba/excel/write/style/column/AbstractHeadColumnWidthStyleStrategy.java

@@ -22,7 +22,7 @@ public abstract class AbstractHeadColumnWidthStyleStrategy extends AbstractColum
         if (!needSetWidth) {
             return;
         }
-        Integer width = columnWidth(head);
+        Integer width = columnWidth(head, cell.getColumnIndex());
         if (width != null) {
             width = width * 256;
             writeSheetHolder.getSheet().setColumnWidth(cell.getColumnIndex(), width);
@@ -36,9 +36,11 @@ public abstract class AbstractHeadColumnWidthStyleStrategy extends AbstractColum
      * if return null,ignore
      *
      * @param head
-     *            Nullable
+     *            Nullable.
+     * @param columnIndex
+     *            Not null.
      * @return
      */
-    protected abstract Integer columnWidth(Head head);
+    protected abstract Integer columnWidth(Head head, Integer columnIndex);
 
 }

src/main/java/com/alibaba/excel/write/style/column/LongestMatchColumnWidthStyleStrategy.java

@@ -6,6 +6,7 @@ import java.util.Map;
 
 import org.apache.poi.ss.usermodel.Cell;
 
+import com.alibaba.excel.enums.CellDataTypeEnum;
 import com.alibaba.excel.metadata.CellData;
 import com.alibaba.excel.metadata.Head;
 import com.alibaba.excel.util.CollectionUtils;
@@ -21,7 +22,7 @@ import com.alibaba.excel.write.metadata.holder.WriteSheetHolder;
  */
 public class LongestMatchColumnWidthStyleStrategy extends AbstractColumnWidthStyleStrategy {
 
-    private static final int MAX_COLUMN_WIDTH = 256;
+    private static final int MAX_COLUMN_WIDTH = 255;
 
     private static final Map<Integer, Map<Integer, Integer>> CACHE = new HashMap<Integer, Map<Integer, Integer>>(8);
 
@@ -56,7 +57,11 @@ public class LongestMatchColumnWidthStyleStrategy extends AbstractColumnWidthSty
             return cell.getStringCellValue().getBytes().length;
         }
         CellData cellData = cellDataList.get(0);
-        switch (cellData.getType()) {
+        CellDataTypeEnum type = cellData.getType();
+        if (type == null) {
+            return -1;
+        }
+        switch (type) {
             case STRING:
                 return cellData.getStringValue().getBytes().length;
             case BOOLEAN:

src/main/java/com/alibaba/excel/write/style/column/SimpleColumnWidthStyleStrategy.java

@@ -19,7 +19,7 @@ public class SimpleColumnWidthStyleStrategy extends AbstractHeadColumnWidthStyle
     }
 
     @Override
-    protected Integer columnWidth(Head head) {
+    protected Integer columnWidth(Head head, Integer columnIndex) {
         return columnWidth;
     }
 }

src/test/java/com/alibaba/easyexcel/test/core/dataformat/DateFormatData.java

@@ -0,0 +1,16 @@
+package com.alibaba.easyexcel.test.core.dataformat;
+
+import lombok.Data;
+
+/**
+ * @author Jiaju Zhuang
+ */
+@Data
+public class DateFormatData {
+    private String date;
+    private String dateStringCn;
+    private String dateStringUs;
+    private String number;
+    private String numberStringCn;
+    private String numberStringUs;
+}

src/test/java/com/alibaba/easyexcel/test/core/dataformat/DateFormatTest.java

@@ -0,0 +1,61 @@
+package com.alibaba.easyexcel.test.core.dataformat;
+
+import java.io.File;
+import java.util.List;
+import java.util.Locale;
+
+import org.junit.Assert;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.alibaba.easyexcel.test.util.TestFileUtil;
+import com.alibaba.excel.EasyExcel;
+
+/**
+ *
+ * @author Jiaju Zhuang
+ */
+public class DateFormatTest {
+    private static final Logger LOGGER = LoggerFactory.getLogger(DateFormatTest.class);
+
+    private static File file07;
+    private static File file03;
+
+    @BeforeClass
+    public static void init() {
+        file07 = TestFileUtil.readFile("dataformat" + File.separator + "dataformat.xlsx");
+        file03 = TestFileUtil.readFile("dataformat" + File.separator + "dataformat.xls");
+    }
+
+    @Test
+    public void t01Read07() {
+        readCn(file07);
+        readUs(file07);
+    }
+
+    @Test
+    public void t02Read03() {
+        readCn(file03);
+        readUs(file03);
+    }
+
+    private void readCn(File file) {
+        List<DateFormatData> list =
+            EasyExcel.read(file, DateFormatData.class, null).locale(Locale.CHINA).sheet().doReadSync();
+        for (DateFormatData data : list) {
+            Assert.assertEquals(data.getDate(), data.getDateStringCn());
+            Assert.assertEquals(data.getNumber(), data.getNumberStringCn());
+        }
+    }
+
+    private void readUs(File file) {
+        List<DateFormatData> list =
+            EasyExcel.read(file, DateFormatData.class, null).locale(Locale.US).sheet().doReadSync();
+        for (DateFormatData data : list) {
+            Assert.assertEquals(data.getDate(), data.getDateStringUs());
+            Assert.assertEquals(data.getNumber(), data.getNumberStringUs());
+        }
+    }
+}

src/test/java/com/alibaba/easyexcel/test/core/fill/FillData.java

@@ -14,5 +14,6 @@ public class FillData {
     private String name;
     @NumberFormat("#")
     @ExcelProperty(converter = DoubleStringConverter.class)
-    private double number;
+    private Double number;
+    private String empty;
 }

src/test/java/com/alibaba/easyexcel/test/core/fill/FillDataTest.java

@@ -6,35 +6,19 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
-import org.apache.poi.ss.usermodel.BorderStyle;
-import org.apache.poi.ss.usermodel.FillPatternType;
-import org.apache.poi.ss.usermodel.Font;
-import org.apache.poi.ss.usermodel.HorizontalAlignment;
-import org.apache.poi.ss.usermodel.IndexedColors;
-import org.apache.poi.ss.usermodel.VerticalAlignment;
 import org.junit.Assert;
 import org.junit.BeforeClass;
 import org.junit.FixMethodOrder;
 import org.junit.Test;
 import org.junit.runners.MethodSorters;
 
-import com.alibaba.easyexcel.test.core.style.StyleData;
-import com.alibaba.easyexcel.test.core.style.StyleDataListener;
 import com.alibaba.easyexcel.test.util.TestFileUtil;
 import com.alibaba.excel.EasyExcel;
 import com.alibaba.excel.ExcelWriter;
 import com.alibaba.excel.enums.WriteDirectionEnum;
-import com.alibaba.excel.metadata.Head;
 import com.alibaba.excel.write.merge.LoopMergeStrategy;
-import com.alibaba.excel.write.merge.OnceAbsoluteMergeStrategy;
 import com.alibaba.excel.write.metadata.WriteSheet;
 import com.alibaba.excel.write.metadata.fill.FillConfig;
-import com.alibaba.excel.write.metadata.style.WriteCellStyle;
-import com.alibaba.excel.write.metadata.style.WriteFont;
-import com.alibaba.excel.write.style.AbstractVerticalCellStyleStrategy;
-import com.alibaba.excel.write.style.HorizontalCellStyleStrategy;
-import com.alibaba.excel.write.style.column.SimpleColumnWidthStyleStrategy;
-import com.alibaba.excel.write.style.row.SimpleRowHeightStyleStrategy;
 
 /**
  *
@@ -121,7 +105,7 @@ public class FillDataTest {
 
     private void complexFill(File file, File template) {
         ExcelWriter excelWriter = EasyExcel.write(file).withTemplate(template).build();
-        WriteSheet writeSheet = EasyExcel.writerSheet().build();
+        WriteSheet writeSheet = EasyExcel.writerSheet().registerWriteHandler(new LoopMergeStrategy(2, 0)).build();
         FillConfig fillConfig = FillConfig.builder().forceNewRow(Boolean.TRUE).build();
         excelWriter.fill(data(), fillConfig, writeSheet);
         excelWriter.fill(data(), fillConfig, writeSheet);