优化读写逻辑

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

@@ -1,5 +1,11 @@
 package com.alibaba.excel.analysis;
 
+import java.io.InputStream;
+
+import org.apache.poi.poifs.crypt.Decryptor;
+import org.apache.poi.poifs.filesystem.DocumentFactoryHelper;
+import org.apache.poi.poifs.filesystem.POIFSFileSystem;
+import org.apache.poi.util.IOUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -39,17 +45,38 @@ public class ExcelAnalyserImpl implements ExcelAnalyser {
     }
 
     private void choiceExcelExecutor() throws Exception {
-        ExcelTypeEnum excelType = analysisContext.readWorkbookHolder().getExcelType();
+        ReadWorkbookHolder readWorkbookHolder = analysisContext.readWorkbookHolder();
+        ExcelTypeEnum excelType = readWorkbookHolder.getExcelType();
         if (excelType == null) {
-            excelExecutor = new XlsxSaxAnalyser(analysisContext);
+            excelExecutor = new XlsxSaxAnalyser(analysisContext, null);
             return;
         }
         switch (excelType) {
             case XLS:
-                excelExecutor = new XlsSaxAnalyser(analysisContext);
+                POIFSFileSystem poifsFileSystem = null;
+                if (readWorkbookHolder.getFile() != null) {
+                    poifsFileSystem = new POIFSFileSystem(readWorkbookHolder.getFile());
+                } else {
+                    poifsFileSystem = new POIFSFileSystem(readWorkbookHolder.getInputStream());
+                }
+                // So in encrypted excel, it looks like XLS but it's actually XLSX
+                if (poifsFileSystem.getRoot().hasEntry(Decryptor.DEFAULT_POIFS_ENTRY)) {
+                    InputStream decryptedStream = null;
+                    try {
+                        decryptedStream = DocumentFactoryHelper.getDecryptedStream(poifsFileSystem.getRoot(), null);
+                        excelExecutor = new XlsxSaxAnalyser(analysisContext, decryptedStream);
+                        return;
+                    } finally {
+                        IOUtils.closeQuietly(decryptedStream);
+                        // as we processed the full stream already, we can close the filesystem here
+                        // otherwise file handles are leaked
+                        poifsFileSystem.close();
+                    }
+                }
+                excelExecutor = new XlsSaxAnalyser(analysisContext, poifsFileSystem);
                 break;
             case XLSX:
-                excelExecutor = new XlsxSaxAnalyser(analysisContext);
+                excelExecutor = new XlsxSaxAnalyser(analysisContext, null);
                 break;
             default:
         }

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

@@ -14,10 +14,7 @@ import org.apache.poi.hssf.eventusermodel.HSSFListener;
 import org.apache.poi.hssf.eventusermodel.HSSFRequest;
 import org.apache.poi.hssf.eventusermodel.MissingRecordAwareHSSFListener;
 import org.apache.poi.hssf.eventusermodel.dummyrecord.LastCellOfRowDummyRecord;
-import org.apache.poi.hssf.record.ExtendedFormatRecord;
 import org.apache.poi.hssf.record.Record;
-import org.apache.poi.hssf.record.StyleRecord;
-import org.apache.poi.hssf.usermodel.HSSFCellStyle;
 import org.apache.poi.hssf.usermodel.HSSFWorkbook;
 import org.apache.poi.poifs.filesystem.POIFSFileSystem;
 
@@ -38,7 +35,6 @@ import com.alibaba.excel.metadata.CellData;
 import com.alibaba.excel.read.listener.event.EachRowAnalysisFinishEvent;
 import com.alibaba.excel.read.metadata.ReadSheet;
 import com.alibaba.excel.read.metadata.holder.ReadRowHolder;
-import com.alibaba.excel.read.metadata.holder.ReadWorkbookHolder;
 import com.alibaba.excel.util.CollectionUtils;
 
 /**
@@ -58,7 +54,7 @@ import com.alibaba.excel.util.CollectionUtils;
  */
 public class XlsSaxAnalyser implements HSSFListener, ExcelExecutor {
     private boolean outputFormulaValues = true;
-    private POIFSFileSystem fs;
+    private POIFSFileSystem poifsFileSystem;
     private int lastRowNumber;
     private int lastColumnNumber;
     private boolean notAllEmpty = false;
@@ -73,16 +69,10 @@ public class XlsSaxAnalyser implements HSSFListener, ExcelExecutor {
     private List<XlsRecordHandler> recordHandlers = new ArrayList<XlsRecordHandler>();
     private AnalysisContext analysisContext;
 
-    public XlsSaxAnalyser(AnalysisContext context) throws IOException {
+    public XlsSaxAnalyser(AnalysisContext context, POIFSFileSystem poifsFileSystem) throws IOException {
         this.analysisContext = context;
         this.records = new TreeMap<Integer, CellData>();
-        ReadWorkbookHolder readWorkbookHolder = analysisContext.readWorkbookHolder();
-        if (readWorkbookHolder.getFile() != null) {
-            this.fs = new POIFSFileSystem(readWorkbookHolder.getFile());
-        } else {
-            this.fs = new POIFSFileSystem(readWorkbookHolder.getInputStream());
-        }
-
+        this.poifsFileSystem = poifsFileSystem;
     }
 
     @Override
@@ -110,7 +100,7 @@ public class XlsSaxAnalyser implements HSSFListener, ExcelExecutor {
         }
 
         try {
-            factory.processWorkbookEvents(request, fs);
+            factory.processWorkbookEvents(request, poifsFileSystem);
         } catch (IOException e) {
             throw new ExcelAnalysisException(e);
         }

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

@@ -53,12 +53,12 @@ public class XlsxSaxAnalyser implements ExcelExecutor {
      */
     private StylesTable stylesTable;
 
-    public XlsxSaxAnalyser(AnalysisContext analysisContext) throws Exception {
+    public XlsxSaxAnalyser(AnalysisContext analysisContext, InputStream decryptedStream) throws Exception {
         this.analysisContext = analysisContext;
         // Initialize cache
         ReadWorkbookHolder readWorkbookHolder = analysisContext.readWorkbookHolder();
 
-        OPCPackage pkg = readOpcPackage(readWorkbookHolder);
+        OPCPackage pkg = readOpcPackage(readWorkbookHolder, decryptedStream);
         PackagePart sharedStringsTablePackagePart =
             pkg.getPartsByContentType(XSSFRelation.SHARED_STRINGS.getContentType()).get(0);
 
@@ -134,17 +134,26 @@ public class XlsxSaxAnalyser implements ExcelExecutor {
         readWorkbookHolder.getReadCache().putFinished();
     }
 
-    private OPCPackage readOpcPackage(ReadWorkbookHolder readWorkbookHolder) throws Exception {
-        if (readWorkbookHolder.getFile() != null) {
+    private OPCPackage readOpcPackage(ReadWorkbookHolder readWorkbookHolder, InputStream decryptedStream)
+        throws Exception {
+        if (decryptedStream == null && readWorkbookHolder.getFile() != null) {
             return OPCPackage.open(readWorkbookHolder.getFile());
         }
         if (readWorkbookHolder.getMandatoryUseInputStream()) {
+            if (decryptedStream != null) {
+                return OPCPackage.open(decryptedStream);
+            } else {
                 return OPCPackage.open(readWorkbookHolder.getInputStream());
             }
+        }
         File readTempFile = FileUtils.createCacheTmpFile();
         readWorkbookHolder.setTempFile(readTempFile);
         File tempFile = new File(readTempFile.getPath(), UUID.randomUUID().toString() + ".xlsx");
+        if (decryptedStream != null) {
+            FileUtils.writeToFile(tempFile, decryptedStream);
+        } else {
             FileUtils.writeToFile(tempFile, readWorkbookHolder.getInputStream());
+        }
         return OPCPackage.open(tempFile);
     }
 

src/test/java/com/alibaba/easyexcel/test/temp/LockTest.java

@@ -0,0 +1,38 @@
+package com.alibaba.easyexcel.test.temp;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.util.List;
+
+import org.junit.Ignore;
+import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.alibaba.excel.EasyExcel;
+import com.alibaba.fastjson.JSON;
+
+/**
+ * 临时测试
+ *
+ * @author Jiaju Zhuang
+ **/
+@Ignore
+public class LockTest {
+    private static final Logger LOGGER = LoggerFactory.getLogger(LockTest.class);
+
+    @Test
+    public void test() throws Exception {
+
+        List<Object> list =
+            EasyExcel.read(new FileInputStream("D:\\test\\t222.xlsx")).sheet().headRowNumber(0).doReadSync();
+        for (Object data : list) {
+            LOGGER.info("返回数据：{}", JSON.toJSONString(data));
+        }
+        list = EasyExcel.read(new File("D:\\test\\t222.xlsx")).sheet().headRowNumber(0).doReadSync();
+        for (Object data : list) {
+            LOGGER.info("返回数据：{}", JSON.toJSONString(data));
+        }
+    }
+
+}

src/test/java/com/alibaba/easyexcel/test/temp/StyleTest.java

@@ -1,5 +1,6 @@
 package com.alibaba.easyexcel.test.temp;
 
+import java.io.File;
 import java.io.FileInputStream;
 import java.io.InputStream;
 import java.lang.reflect.Field;
@@ -10,6 +11,8 @@ import org.apache.poi.hssf.usermodel.HSSFDateUtil;
 import org.apache.poi.hssf.usermodel.HSSFRow;
 import org.apache.poi.hssf.usermodel.HSSFSheet;
 import org.apache.poi.hssf.usermodel.HSSFWorkbook;
+import org.apache.poi.poifs.crypt.Decryptor;
+import org.apache.poi.poifs.filesystem.POIFSFileSystem;
 import org.apache.poi.ss.usermodel.BuiltinFormats;
 import org.apache.poi.ss.usermodel.Cell;
 import org.apache.poi.ss.usermodel.DataFormatter;
@@ -19,7 +22,6 @@ import org.apache.poi.ss.usermodel.Row;
 import org.apache.poi.ss.usermodel.Sheet;
 import org.apache.poi.ss.usermodel.Workbook;
 import org.apache.poi.ss.usermodel.WorkbookFactory;
-import org.apache.tomcat.util.http.fileupload.IOUtils;
 import org.junit.Ignore;
 import org.junit.Test;
 import org.slf4j.Logger;
@@ -91,7 +93,7 @@ public class StyleTest {
     @Test
     public void poi0701() throws Exception {
         InputStream is = new FileInputStream("D:\\test\\f1.xlsx");
-        Workbook workbook = WorkbookFactory.create(is); // 这种方式 Excel 2003/2007/2010 都是可以处理的
+        Workbook workbook = WorkbookFactory.create(is);
         Sheet sheet = workbook.getSheetAt(0);
         print(sheet.getRow(0).getCell(0));
         print(sheet.getRow(1).getCell(0));
@@ -99,6 +101,44 @@ public class StyleTest {
         print(sheet.getRow(3).getCell(0));
     }
 
+    @Test
+    public void poi0702() throws Exception {
+        Workbook workbook = WorkbookFactory.create(new FileInputStream("D:\\test\\t2.xlsx"));
+        workbook = WorkbookFactory.create(new File("D:\\test\\t2.xlsx"));
+        Sheet sheet = workbook.getSheetAt(0);
+        Row row = sheet.getRow(0);
+        System.out.println(row.getCell(0).getNumericCellValue());
+    }
+
+    @Test
+    public void poi0703() throws Exception {
+        try {
+            POIFSFileSystem poifsFileSystem = new POIFSFileSystem(new FileInputStream("D:\\test\\t2.xlsx"));
+            System.out.println(poifsFileSystem.getRoot().hasEntry(Decryptor.DEFAULT_POIFS_ENTRY));
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        try {
+            POIFSFileSystem poifsFileSystem = new POIFSFileSystem(new File("D:\\test\\t2.xlsx"));
+            System.out.println(poifsFileSystem.getRoot().hasEntry(Decryptor.DEFAULT_POIFS_ENTRY));
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        try {
+            POIFSFileSystem poifsFileSystem = new POIFSFileSystem(new FileInputStream("D:\\test\\t222.xlsx"));
+            System.out.println(poifsFileSystem.getRoot().hasEntry(Decryptor.DEFAULT_POIFS_ENTRY));
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        try {
+            POIFSFileSystem poifsFileSystem = new POIFSFileSystem(new File("D:\\test\\t222.xlsx"));
+            System.out.println(poifsFileSystem.getRoot().hasEntry(Decryptor.DEFAULT_POIFS_ENTRY));
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
     private void print(Cell cell) {
         System.out.println(
             DateUtil.isADateFormat(cell.getCellStyle().getDataFormat(), cell.getCellStyle().getDataFormatString()));