jsonp 实现跨域例子

直接上代码：

js：

<html>
<head>
<title>JSONP</title>
</head>
<script src = "jquery.js"></script>
<script>
$(function(){
$.ajax({  
        type:'POST',  
        url : 'http://mainsite.service.com:8090/article/get/by/typeid',
        dataType : 'jsonp',  
        data:{"siteid":0,"tagid":0,"page":1,"size":2,"jsonpCallback":"callback"},
        jsonpCallback: 'callback',
        success  : function() {  
           //do something...
        },  
        error : function(data) {  
          //do something...
        }  
   });
})

function callback(data){
    var jsonobj = eval('(' + data + ')'); 
    alert(jsonobj.name);
}
</script>
<body>

</body>
</html>

后端代码：

@RequestMapping(value = "/get/by/typeid"
            ,method=RequestMethod.GET,
            produces = "application/json;charset=utf-8"
    )
    @ResponseBody
    public void getArticles_post(HttpServletResponse resp, HttpServletRequest req) throws TException {
        
        PrintWriter pWriter = null;
        try {
            String callback = req.getParameter("jsonpCallback");
            pWriter = resp.getWriter();
            //json数据
            String json = "{\"name\":\"chopper\",\"sex\":\"man\"}";

             pWriter.write(callback+"('"+json+"')");

        } catch (Exception e) {
            // TODO: handle exception
            e.printStackTrace();
        }finally{
            if(pWriter!=null){
                pWriter.flush();
                pWriter.close();
            }
        }
    }

 

 

posted @ 2016-11-12 13:38  Enast  阅读(1064)  评论(0)  编辑  收藏  举报