String fileUrl = request.getRequestURL().substring(0,

                    request.getRequestURL().indexOf("/rest"))

                    + "/test/resources/images/template.jpg";

            URL url = new URL(fileUrl);

            HttpURLConnection conn = (HttpURLConnection) url.openConnection();

            conn.connect();

            response.reset();

            response.setContentType("application/x-msdownload");

            response.addHeader("Content-Disposition", "attachment; filename="

                    + new String("template.jpg".getBytes("gbk"), "iso-8859-1"));

            OutputStream os = response.getOutputStream();

            InputStream in = conn.getInputStream();

            byte[] b = new byte[1024];

            int r = 0;

            while ((r = in.read(b)) != -1) {

                os.write(b, 0, r);

            }

            os.flush();

            os.close();

            in.close();

            conn.disconnect();