Spring MVC 中Ajax返回字符串

今天想用Ajax返回一个html的字符串数据。

JavaScript代码：

 function saveMarkSolve() {

     //editor1.sync();

     //var s = editor1.html();

     $.ajax({

            type: "GET",

            dataType: "html",

            url: "../exceptions/getHtml",

            //data: "ExceptionId=" + exceptionId,

            success: function(msg){

                    $("#main_container").empty();

                 $("#main_container").html(msg);

            },error :function() {

                alert("请求失败");

            }

         });

 }

Java代码：

　　

 @RequestMapping(value = "/getHtml", method = RequestMethod.GET)

     public void getHtml(HttpServletResponse responses){

         try{

           DefaultHttpClient httpclient = new DefaultHttpClient();

           String uri = "http://192.168.0.6:9011/home/WWW";

           HttpGet httppost = new HttpGet(uri);

           //添加http头信息

           httppost.addHeader("iv-user", "liu_jun"); //认证token

           //http post的json数据格式：  {"name": "your name","parentId": "id_of_parent"}

           //JSONObject obj = new JSONObject();

          // httppost.setEntity(new StringEntity(obj.toString()));

           HttpResponse response;

           response = httpclient.execute(httppost);

           //检验状态码，如果成功接收数据

           int code = response.getStatusLine().getStatusCode();

           Map<String, Object> msg = new HashMap<String, Object>();

           if (code == 200) {

               String rev = EntityUtils.toString(response.getEntity());//返回json格式： {"id": "27JpL~j4vsL0LX00E00005","version": "abc"}

               System.out.println(rev);

               responses.setContentType("text/html;charset=utf-8");

               PrintWriter out=responses.getWriter();

               out.print(rev);

           } else {

              System.out.println("111");

           }

       } catch (ClientProtocolException e) {

               e.printStackTrace();

       } catch (IOException e) {

           e.printStackTrace();

       } catch (Exception e) {

               e.printStackTrace();

       }

     }

核心代码：

 responses.setContentType("text/html;charset=utf-8");

 PrintWriter out=responses.getWriter();

 out.print(rev);