EasyExcel导出excel

Question

问题遇到的现象和发生背景

使用EasyExcel导出单文件多sheet页的excel文件，使用postman测试时，文件会直接导出到项目目录下，此时文件时正确的，但是当我用浏览器直接访问接口时，下载的文件是错误的，我在下面放图片。请看到的各位给指点一下。谢谢！

问题相关代码，请勿粘贴截图

@Override
    @Transactional
    public void WriteEmpeInfo(HttpServletResponse response) throws IOException {
        String fileName = "EmpeInfo" + System.currentTimeMillis() + ".xlsx";
        int count = 0;
        ExcelWriter excelWriter = null;
        excelWriter = EasyExcel.write(fileName).build();//创建文件
        /*创建sheet页
         * writerSheet：第几个sheet页，sheet页名
         * head：继承了BaseRowModel的实体类 .class
         * */
        WriteSheet empeInfo = EasyExcel.writerSheet(0, "empeInfo").head(EmpeInfoExcel.class).build();
        List<EmpeInfoExcel> empe = easyExcelMapper.selectEmpe();//查询数据库数据
        excelWriter.write(empe, empeInfo);//把查到的数据写进sheet页

        WriteSheet edauInfo = EasyExcel.writerSheet(1, "edauInfo").head(EdauInfoExcel.class).build();
        List<EdauInfoExcel> edau = easyExcelMapper.selectEdau();
        excelWriter.write(edau, edauInfo);

        WriteSheet workInfo = EasyExcel.writerSheet(2, "workInfo").head(WorkInfoExcel.class).build();
        List<WorkInfoExcel> work = easyExcelMapper.selectWork();
        excelWriter.write(work, workInfo);

//        response.setContentType("application/vnd.ms-excel");
//        response.setCharacterEncoding("utf8");
//        response.setHeader("Content-Disposition", "attachment;filename*=UTF-8''" + URLEncoder.encode(fileName,"UTF-8"));
        File file = new File(fileName);
        try {
            if (!file.exists()) {
                response.sendError(404, "File not found!");
                return;
            }
            InputStream fis = new BufferedInputStream(new FileInputStream(fileName));
            byte[] buffer = new byte[fis.available()];
            fis.read(buffer);
            fis.close();
            // 清空response
            response.reset();
            response.setContentType("application/vnd.ms-excel");
            response.setHeader("Content-Disposition", "attachment;filename=" + new String(file.getName().getBytes("UTF-8"), "iso8859-1"));
            response.addHeader("Content-Length", "" + file.length());
            //编码
            response.setCharacterEncoding("UTF-8");
            OutputStream out = new BufferedOutputStream(response.getOutputStream());
            out.write(buffer);

            out.flush();
            out.close();

        } catch (Exception e) {
            e.printStackTrace();
        }
        // 千万别忘记finish 会帮忙关闭流
        excelWriter.finish();
    }

运行结果及报错内容

浏览器直接访问的方式，下载的文件有问题，请看到的给位多多指教

我的解答思路和尝试过的方法

我想要达到的结果

Answer 1

你的文件是二进制文件

这样下载