需要在java接口层编写模板下载的接口，应该怎么做？

@GetMapping("/template")
public void downloadTemplate(HttpServletResponse response) throws IOException {
        ClassPathResource resource = new ClassPathResource("apptag/sender_no_blacklist.xlsx");
        if (!resource.exists()) {
            throw BizException.of(ErrorCode.BAD_REQUEST, "未找到资源文件");
        }
        byte[] bytes = IoUtil.readBytes(resource.getInputStream(), true);
        response.setHeader(HttpHeaders.CONTENT_DISPOSITION, "attachment;filename=" + URLEncoder.encode("sender_no_blacklist.xlsx", StandardCharsets.UTF_8));
        response.setHeader(HttpHeaders.ACCESS_CONTROL_EXPOSE_HEADERS, HttpHeaders.CONTENT_DISPOSITION);
        response.setContentType("application/octet-stream");
        response.getOutputStream().write(bytes);
    }