@RequestMapping("/pluginDownload")

    public void pluginDownload(HttpServletResponse response) throws FileNotFoundException {

        // 下载本地文件

        String fileName = "plugin.rar";

        // 读到流中

        InputStream inStream = new FileInputStream("d:/up_pipegis/plugin/plugin.rar");

        // 设置输出的格式

        response.reset();

        response.setContentType("bin");

        response.addHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");

        // 循环取出流中的数据

        byte[] b = new byte[128];

        int len;

        try {

            while ((len = inStream.read(b)) > 0)

                response.getOutputStream().write(b, 0, len);

            inStream.close();

        } catch (IOException e) {

            e.printStackTrace();

        }

    }