public org.springframework.http.ResponseEntity<InputStreamResource> handleExcel(HttpServletRequest request) throws Exception {

        String fileName = "模板下载.xsls";

            //解决浏览器下载汉字乱码的兼容问题

            String userAgent = request.getHeader("User-Agent");

            byte[] bytes = userAgent.contains("MSIE") ? fileName.getBytes() : fileName.getBytes("UTF-8");

            // 各浏览器基本都支持ISO编码

            String name = new String(bytes, "ISO-8859-1");

             //网络资源文件

             //可以替换为网络资源文件

             //本地文件

            PathResource file = new     PathResource(FileUtil.getNewFileName(fileName));

            HttpHeaders headers = new HttpHeaders();

            headers.add("Cache-Control", "no-cache, no-store, must-revalidate");

            headers.add("Content-Disposition", "attachment;fileName=" + name);

            headers.add("Pragma", "no-cache");

            headers.add("Expires", "0");

            org.springframework.http.ResponseEntity<InputStreamResource> entity = org.springframework.http.ResponseEntity

                    .ok()

                    .headers(headers)

                    .contentLength(file.contentLength())

                    .contentType(MediaType.parseMediaType("application/octet-stream"))

                    .body(new InputStreamResource(file.getInputStream()));

            return entity;

}