把日志从数据库导出到Excel表格中(poi)

前台页面

<div class="padding border-bottom">
            <a href="download" class="button border-blue"
            >下载</a>
            </div>

后台代码

    @RequestMapping("download")
    
    public void download(HttpServletResponse resp,HttpServletRequest req) throws IOException{
        try {
        req.setCharacterEncoding("UTF-8");
        resp.setContentType("text/html;charset=UTF-8");
        String outputFile="F:\outFile\outFile.xls"; 
        HSSFWorkbook workbook = new HSSFWorkbook();
        HSSFSheet sheet = workbook.createSheet();
        workbook.setSheetName(0, "demo");
        HSSFRow row = sheet.createRow((int)0);
        HSSFCellStyle style = workbook.createCellStyle();
        style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
        String [] excelHeader = {"日志编号","操作人","操作内容","时间"};
        for (int i = 0; i < excelHeader.length; i++) {
            HSSFCell cell = row.createCell(i);
            cell.setCellValue(excelHeader[i]);
            cell.setCellStyle(style);
//            sheet.autoSizeColumn(i);
        }
        List<Log> logs = logService.selectLogs();
        for (int i = 0; i < logs.size(); i++) {
            Log log = logs.get(i);
            HSSFRow hssfRow = sheet.createRow(i+1);
            hssfRow.createCell(0).setCellValue(log.getId());
            hssfRow.createCell(1).setCellValue(log.getUserName());
            hssfRow.createCell(2).setCellValue(log.getMethod());
            hssfRow.createCell(3).setCellValue(log.getTime());
            sheet.autoSizeColumn(i);
        }
        
            FileOutputStream fos = new FileOutputStream(outputFile);
            workbook.write(fos);
            fos.close();
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        resp.getWriter().print("导出日志成功!");
    }

截图