关于execel 出现 unable to read entire header的问题 求各位大神分析一下 哪里出错了！！！！

Question

 public static Workbook fillExcelDataWithTemplate(List<StatisticsDTO> list ,String templateFileUrl) {
        Workbook wb = null ;
        try {
            File file  = new File(templateFileUrl);
            if(!file.exists()){
                file.createNewFile();
            }
            POIFSFileSystem fs = new POIFSFileSystem(new FileInputStream(file));
            wb = new HSSFWorkbook(fs);
            // 取得 模板的 第一个sheet 页
            Sheet sheet = wb.getSheetAt(0);
            // 拿到sheet页有 多少列
            int cellNums = sheet.getRow(0).getLastCellNum();
            // 从第2行 开搞    下标1  就是第2行
            int rowIndex = 1;
            Row row ;
            for(StatisticsDTO statisticsDTO : list){
                row = sheet.createRow(rowIndex);
                rowIndex ++;
                row.createCell( 0).setCellValue(statisticsDTO.getId());
                row.createCell(1).setCellValue(statisticsDTO.getNewUserCount());
                row.createCell(2).setCellValue(statisticsDTO.getTotalPayCount());
                row.createCell(3).setCellValue(statisticsDTO.getTotalPayNum());
                row.createCell(4).setCellValue(statisticsDTO.getWeixinpayPayCount());
                row.createCell(5).setCellValue(statisticsDTO.getWeixinpayPayNum());
                row.createCell(6).setCellValue(statisticsDTO.getAlipayPayCount());
                row.createCell(7).setCellValue(statisticsDTO.getAlipayPayNum());
                row.createCell(8).setCellValue(statisticsDTO.getDggPayCount());
                row.createCell(9).setCellValue(statisticsDTO.getDggPayNum());
                row.createCell(10).setCellValue(DateUtil.formatDate(statisticsDTO.getCreateTime(),"yyyy-MM-dd HH:mm:ss"));
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        return wb;
    }

Answer 1

格式不兼容，文件损坏，或者把xlsx误当作xls了