java导出excel

/**

       * 以下为生成Excel操作

       */

      // 1.创建一个workbook，对应一个Excel文件

      HSSFWorkbook wb = new HSSFWorkbook();

      // 2.在workbook中添加一个sheet，对应Excel中的一个sheet

      HSSFSheet sheet = wb.createSheet(\"XXX表\");

      // 3.在sheet中添加表头第0行，老版本poi对excel行数列数有限制short

      HSSFRow row = sheet.createRow((int) 0);

      // 4.创建单元格，设置值表头，设置表头居中

      HSSFCellStyle style = wb.createCellStyle();

      // 居中格式

      style.setAlignment(HSSFCellStyle.ALIGN_CENTER);

      // 设置表头

      HSSFCell cell = row.createCell(0);

      cell.setCellValue(\"表头1\");

      cell.setCellStyle(style);

      cell = row.createCell(1);

      cell.setCellValue(\"表头2\");

      cell.setCellStyle(style);

      cell = row.createCell(2);

      cell.setCellValue(\"表头3\");

      cell.setCellStyle(style);

      cell = row.createCell(3);

      cell.setCellValue(\"表头4\");

      cell.setCellStyle(style);

      cell = row.createCell(4);

      cell.setCellValue(\"表头5\");

      cell.setCellStyle(style);