java下载文件

//下载模板
@RequestMapping("/download")
public void download(HttpServletResponse response) {
    logger.info("开始下载模板--------------->");
    //获取要下载的模板名称
    String fileName = "footMark.xlsx";
    //设置要下载的文件的名称
    response.setHeader("Content-Disposition", "attachment;fileName=" + fileName);
    //通知客服文件的MIME类型
    response.setContentType("application/vnd.ms-template;charset=UTF-8");
    //获取resource下的templates文件夹下的文件的路径
    try (InputStream inputStream = Thread.currentThread().getContextClassLoader().getResourceAsStream("templates/"+fileName)) {
    //读取excel模板
        XSSFWorkbook wb = new XSSFWorkbook(inputStream);
        OutputStream os = new BufferedOutputStream(response.getOutputStream());
        wb.write(os);
        os.flush();
        os.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}