@Test public void createXls() throws Exception{  //聲明一個工作薄  HSSFWorkbook wb = new HSSFWorkbook();  //聲明表  HSSFSheet sheet = wb.createSheet("第一個表");  //聲明行  HSSFRow row = sheet.createRow(7);  //聲明列  HSSFCell cel = row.createCell(3);  //寫入數據  cel.setCellValue("你也好");    FileOutputStream fileOut = new FileOutputStream("d:/a/b.xls");  wb.write(fileOut);  fileOut.close(); }