@RequestMapping(value="/Xxxxx/authenticate")
    public @ResponseBody String getToken(@RequestParam String username, @RequestParam String password) throws Exception {
        InputStream is = null;
        BufferedReader br = null;
        StringBuilder sBuilder = null;
        try {
            HttpClient httpClient = new
 
 DefaultHttpClient();
            HttpPut httpPut = new HttpPut("url");
            httpPut.addHeader("username",username);
            httpPut.addHeader("password",password);
            HttpResponse httpResponse = httpClient.execute(httpPut);
            //連線成功
            if(200 == httpResponse.getStatusLine().getStatusCode()){
                HttpEntity httpEntity = httpResponse.getEntity();
                is
 
 = httpEntity.getContent();
                br = new BufferedReader(new InputStreamReader(is));
                String tempStr;
                sBuilder = new StringBuilder();
                while ((tempStr = br.readLine()) != null) {
                    sBuilder.append(tempStr);
                }
                br.close();
                is
 
.close();
            }
        }catch (Exception e){
            System.out.println(e);
            e.printStackTrace();
        }
        return sBuilder==null? "":sBuilder.toString();
    }