@Operation(summary = "下載模版")
    @GetMapping("download")
    public Result<String> download(HttpServletResponse response) {
        String fileName = "demo模版.xlsx";
        ServletOutputStream outputStream = response.getOutputStream()
        try {
            // 清空下載文件的空白行（空白行是因為有的前端代碼編譯后產生的）
            response.reset();
            response.setCharacterEncoding("utf-8");
            // 解決中文文件名亂碼問題
            String encodedFileName = URLEncoder.encode(fileName, "UTF-8");
            response.setHeader("Content-Disposition", "attachment;filename=\"" + encodedFileName + "\";filename*=utf-8''" + encodedFileName);
            // 設置文件類型
            response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=utf-8");
            // 讀取文件并輸出到瀏覽器
            File file = FileUtil.file("templates/demo_templates.xlsx");
            outputStream.write(FileUtils.readFileToByteArray(file));
            outputStream.flush();
        } catch (IOException e) {
            log.error("下載文件失敗，{}", fileName, e);
        } finally {
            // 不要在此處關閉輸出流
            // outputStream.close();
        }
        return Result.success("下載成功");
    }