重写主流程，代码更加优雅 测试完毕

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

@@ -10,6 +10,7 @@ import com.alibaba.excel.enums.CellDataTypeEnum;
 import com.alibaba.excel.metadata.CellData;
 import com.alibaba.excel.read.metadata.holder.xlsx.XlsxReadSheetHolder;
 import com.alibaba.excel.util.PositionUtils;
+import com.alibaba.excel.util.StringUtils;
 
 /**
  * Cell Handler
@@ -18,6 +19,8 @@ import com.alibaba.excel.util.PositionUtils;
  */
 public class CellTagHandler extends AbstractXlsxTagHandler {
 
+    private static final int DEFAULT_FORMAT_INDEX = 0;
+
     @Override
     public void startElement(XlsxReadContext xlsxReadContext, String name, Attributes attributes) {
         XlsxReadSheetHolder xlsxReadSheetHolder = xlsxReadContext.xlsxReadSheetHolder();
@@ -36,15 +39,18 @@ public class CellTagHandler extends AbstractXlsxTagHandler {
 
         // Put in data transformation information
         String dateFormatIndex = attributes.getValue(ExcelXmlConstants.ATTRIBUTE_S);
-        if (dateFormatIndex != null) {
-            int dateFormatIndexInteger = Integer.parseInt(dateFormatIndex);
-            XSSFCellStyle xssfCellStyle =
-                xlsxReadContext.xlsxReadWorkbookHolder().getStylesTable().getStyleAt(dateFormatIndexInteger);
-            int dataFormat = xssfCellStyle.getDataFormat();
-            xlsxReadSheetHolder.getTempCellData().setDataFormat(dataFormat);
-            xlsxReadSheetHolder.getTempCellData().setDataFormatString(BuiltinFormats.getBuiltinFormat(dataFormat,
-                xssfCellStyle.getDataFormatString(), xlsxReadSheetHolder.getGlobalConfiguration().getLocale()));
+        Integer dateFormatIndexInteger;
+        if (StringUtils.isEmpty(dateFormatIndex)) {
+            dateFormatIndexInteger = DEFAULT_FORMAT_INDEX;
+        } else {
+            dateFormatIndexInteger = Integer.parseInt(dateFormatIndex);
         }
+        XSSFCellStyle xssfCellStyle =
+            xlsxReadContext.xlsxReadWorkbookHolder().getStylesTable().getStyleAt(dateFormatIndexInteger);
+        int dataFormat = xssfCellStyle.getDataFormat();
+        xlsxReadSheetHolder.getTempCellData().setDataFormat(dataFormat);
+        xlsxReadSheetHolder.getTempCellData().setDataFormatString(BuiltinFormats.getBuiltinFormat(dataFormat,
+            xssfCellStyle.getDataFormatString(), xlsxReadSheetHolder.getGlobalConfiguration().getLocale()));
     }
 
 }

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

@@ -64,8 +64,8 @@ public class BuiltinFormats {
         // 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",
+        // 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,
@@ -236,8 +236,8 @@ public class BuiltinFormats {
         // 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",
+        // 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,

src/main/java/com/alibaba/excel/support/ExcelTypeEnum.java

@@ -10,6 +10,7 @@ import org.apache.poi.poifs.filesystem.FileMagic;
 import com.alibaba.excel.exception.ExcelAnalysisException;
 import com.alibaba.excel.exception.ExcelCommonException;
 import com.alibaba.excel.read.metadata.ReadWorkbook;
+import com.alibaba.excel.util.StringUtils;
 
 /**
  * @author jipengfei
@@ -45,17 +46,29 @@ public enum ExcelTypeEnum {
                 if (!file.exists()) {
                     throw new ExcelAnalysisException("File " + file.getAbsolutePath() + " not exists.");
                 }
+                // If there is a password, use the FileMagic first
+                if (!StringUtils.isEmpty(readWorkbook.getPassword())) {
+                    BufferedInputStream bufferedInputStream = new BufferedInputStream(new FileInputStream(file));
+                    try {
+                        return recognitionExcelType(bufferedInputStream);
+                    } finally {
+                        bufferedInputStream.close();
+                    }
+                }
+                // Use the name to determine the type
                 String fileName = file.getName();
                 if (fileName.endsWith(XLSX.getValue())) {
                     return XLSX;
                 } else if (fileName.endsWith(XLS.getValue())) {
                     return XLS;
                 }
-                BufferedInputStream bufferedInputStream = new BufferedInputStream(new FileInputStream(file));
-                try {
-                    return recognitionExcelType(bufferedInputStream);
-                } finally {
-                    bufferedInputStream.close();
+                if (StringUtils.isEmpty(readWorkbook.getPassword())) {
+                    BufferedInputStream bufferedInputStream = new BufferedInputStream(new FileInputStream(file));
+                    try {
+                        return recognitionExcelType(bufferedInputStream);
+                    } finally {
+                        bufferedInputStream.close();
+                    }
                 }
             }
             if (!inputStream.markSupported()) {

src/test/java/com/alibaba/easyexcel/test/core/converter/ConverterDataListener.java

@@ -32,7 +32,7 @@ public class ConverterDataListener extends AnalysisEventListener<ConverterData>
         Assert.assertEquals(list.size(), 1);
         ConverterData data = list.get(0);
         try {
-            Assert.assertEquals(data.getDate(), DateUtils.parseDate("2020-01-01 01:01:01"));
+            Assert.assertEquals(DateUtils.parseDate("2020-01-01 01:01:01"), data.getDate());
         } catch (ParseException e) {
             throw new ExcelCommonException("Test Exception", e);
         }

src/test/java/com/alibaba/easyexcel/test/core/converter/ReadAllConverterDataListener.java

@@ -64,7 +64,7 @@ public class ReadAllConverterDataListener extends AnalysisEventListener<ReadAllC
         Assert.assertEquals(data.getStringBoolean(), "true");
         Assert.assertEquals(data.getStringString(), "测试");
         Assert.assertEquals(data.getStringError(), "#VALUE!");
-        Assert.assertEquals(data.getStringNumberDate(), "2020-01-01 01:01:01");
+        Assert.assertEquals("2020-1-1 1:01", data.getStringNumberDate());
         double doubleStringFormulaNumber = new BigDecimal(data.getStringFormulaNumber()).doubleValue();
         Assert.assertEquals(doubleStringFormulaNumber, 2.0, 0.0);
         Assert.assertEquals(data.getStringFormulaString(), "1测试");

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

@@ -12,7 +12,6 @@ import org.slf4j.LoggerFactory;
 
 import com.alibaba.easyexcel.test.util.TestFileUtil;
 import com.alibaba.excel.EasyExcel;
-import com.alibaba.fastjson.JSON;
 
 /**
  *
@@ -45,7 +44,6 @@ public class DateFormatTest {
     private void readCn(File file) {
         List<DateFormatData> list =
             EasyExcel.read(file, DateFormatData.class, null).locale(Locale.CHINA).sheet().doReadSync();
-        System.out.println(JSON.toJSONString(list));
         for (DateFormatData data : list) {
             Assert.assertEquals(data.getDateStringCn(), data.getDate());
             Assert.assertEquals(data.getNumberStringCn(), data.getNumber());

src/test/java/com/alibaba/easyexcel/test/core/encrypt/EncryptDataTest.java

@@ -6,19 +6,15 @@ import java.io.FileOutputStream;
 import java.util.ArrayList;
 import java.util.List;
 
-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.simple.SimpleData;
-import com.alibaba.easyexcel.test.core.simple.SimpleDataListener;
-import com.alibaba.easyexcel.test.core.simple.SimpleDataSheetNameListener;
 import com.alibaba.easyexcel.test.util.TestFileUtil;
 import com.alibaba.excel.EasyExcel;
 import com.alibaba.excel.support.ExcelTypeEnum;
-import com.alibaba.excel.util.FileUtils;
 
 /**
  *
@@ -51,12 +47,12 @@ public class EncryptDataTest {
     }
 
     @Test
-    public void t01ReadAndWriteStream07() throws Exception {
+    public void t03ReadAndWriteStream07() throws Exception {
         readAndWriteStream(file07OutputStream, ExcelTypeEnum.XLSX);
     }
 
     @Test
-    public void t02ReadAndWriteStream03() throws Exception {
+    public void t04ReadAndWriteStream03() throws Exception {
         readAndWriteStream(file03OutputStream, ExcelTypeEnum.XLS);
     }
 
@@ -72,8 +68,8 @@ public class EncryptDataTest {
         fileOutputStream.close();
 
         FileInputStream fileInputStream = new FileInputStream(file);
-        EasyExcel.read(fileInputStream, EncryptData.class, new EncryptDataListener()).password("123456")
-            .excelType(excelType).sheet().doRead();
+        EasyExcel.read(fileInputStream, EncryptData.class, new EncryptDataListener()).password("123456").sheet()
+            .doRead();
     }
 
     private List<SimpleData> data() {

src/test/java/com/alibaba/easyexcel/test/temp/read/CommentTest.java

@@ -24,7 +24,7 @@ public class CommentTest {
 
     @Test
     public void comment() throws Exception {
-        File file = new File("D:\\test\\listHead07.xlsx");
+        File file = new File("D:\\test\\d1.xlsx");
         List<Map<Integer, CellData>> datas = EasyExcel.read(file).doReadAllSync();
         for (Map<Integer, CellData> data : datas) {
             LOGGER.info("数据:{}", JSON.toJSONString(data));