1 <dependency>
2             <groupId>org.apache.poi</groupId>
3             <artifactId>poi</artifactId>
4             <version>3.10-FINAL</version>
5         </dependency>

 1 public static void Excel2003Operate(String filePath) throws Exception {
 2         HSSFWorkbook hssfWorkbook = new HSSFWorkbook(new FileInputStream(new File(filePath)));
 3         HSSFSheet sheet = hssfWorkbook.getSheetAt(0);
 4         for (int i = 0; i < 10000; i++) {
 5             HSSFRow hssfRow = sheet.createRow(i);
 6             for (int j = 0; j < 10; j++) {
 7                 HSSFCellUtil.createCell(hssfRow, j, String.valueOf(Math.random()));
 8             }
 9         }
10         FileOutputStream out = new FileOutputStream("workbook.xlsx");
11         hssfWorkbook.write(out);
12         out.close();
13     }

 1 Connected to the target VM, address: '127.0.0.1:62382', transport: 'socket'
 2 Exception in thread "main" org.apache.poi.poifs.filesystem.OfficeXmlFileException: The supplied data appears to be in the Office 2007+ XML. You are calling the part of POI that deals with OLE2 Office Documents. You need to call a different part of POI to process this data (eg XSSF instead of HSSF)
 3     at org.apache.poi.poifs.storage.HeaderBlock.<init>(HeaderBlock.java:131)
 4     at org.apache.poi.poifs.storage.HeaderBlock.<init>(HeaderBlock.java:104)
 5     at org.apache.poi.poifs.filesystem.POIFSFileSystem.<init>(POIFSFileSystem.java:128)
 6     at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:342)
 7     at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:323)
 8     at dev.tinyz.excel.POIUtil.Excel2003Operate(POIUtil.java:23)
 9     at dev.tinyz.excel.Main.main(Main.java:16)
10 Disconnected from the target VM, address: '127.0.0.1:62382', transport: 'socket'

 1 <dependency>
 2             <groupId>org.apache.poi</groupId>
 3             <artifactId>poi-ooxml</artifactId>
 4             <version>3.10-FINAL</version>
 5         </dependency>
 6         <dependency>
 7             <groupId>org.apache.poi</groupId>
 8             <artifactId>poi-ooxml-schemas</artifactId>
 9             <version>3.10-FINAL</version>
10         </dependency>

 1 public static void Excel2007AboveOperateOld(String filePath) throws IOException {
 2         XSSFWorkbook workbook = new XSSFWorkbook(new FileInputStream(new File(filePath)));
 3         // 获取第一个表单
 4         Sheet first = workbook.getSheetAt(0);
 5         for (int i = 0; i < 100000; i++) {
 6             Row row = first.createRow(i);
 7             for (int j = 0; j < 11; j++) {
 8                 if(i == 0) {
 9                     // 首行
10                     row.createCell(j).setCellValue("column" + j);
11                 } else {
12                     // 数据
13                     if (j == 0) {
14                         CellUtil.createCell(row, j, String.valueOf(i));
15                     } else
16                         CellUtil.createCell(row, j, String.valueOf(Math.random()));
17                 }
18             }
19         }
20         // 写入文件
21         FileOutputStream out = new FileOutputStream("workbook.xlsx");
22         workbook.write(out);
23         out.close();
24     }

1 Cast time : 49699

 1 public static void Excel2007AboveOperate(String filePath) throws IOException {
 2         XSSFWorkbook workbook1 = new XSSFWorkbook(new FileInputStream(new File(filePath)));
 3         SXSSFWorkbook sxssfWorkbook = new SXSSFWorkbook(workbook1, 100);
 4 //            Workbook workbook = WorkbookFactory.create(new FileInputStream(new File(filePath)));
 5         Sheet first = sxssfWorkbook.getSheetAt(0);
 6         for (int i = 0; i < 100000; i++) {
 7             Row row = first.createRow(i);
 8             for (int j = 0; j < 11; j++) {
 9                 if(i == 0) {
10                     // 首行
11                     row.createCell(j).setCellValue("column" + j);
12                 } else {
13                     // 数据
14                     if (j == 0) {
15                         CellUtil.createCell(row, j, String.valueOf(i));
16                     } else
17                         CellUtil.createCell(row, j, String.valueOf(Math.random()));
18                 }
19             }
20         }
21         FileOutputStream out = new FileOutputStream("workbook.xlsx");
22         sxssfWorkbook.write(out);
23         out.close();
24     }

1 Cast time : 11604

1 Cast time : 87782