jquery ajax跨域的完美解决方法(jsonp方式)

1 $.ajax({

 2                     url:basepath+"/login/login?msg_base64="+msg_base64,
 3                     async: false,
 4 //                    data:{
 5 //                        "formContent":str,
 6 //                        "formName":formName,
 7 //                        "leixing":leixing
 8 //                    },
 9                     dataType:"jsonp",
10                     processData: false,     
11                     type:"get",
12                     success:function(data){
13                         data=data[0];
14                         alert(data);
15                         if(data.status=="0"){
16                             $("#usererror").html(data.msg);
17                         }else if(data.status=="1"){
18                             $("#pwderror").html(data.msg);
19                             }
20                         else if(data.status=="2"){
21                             alert("水电费:"+data.data);
22                             addCookie("token",data.data,1);//将令牌存入cookie中
23                             window.location.href="edit.html";
24                             }
25                     }
26                 });

 1 @ResponseBody // 将方法的返回结果自动转换为json格式字符串，注意需要导json的包
 2     @RequestMapping(value = "/login", method = RequestMethod.GET)
 3     public String login(HttpServletRequest request,String msg_base64) {
 4         
 5         
 6         String callback=request.getParameter("callback");
 7         //System.out.println(callback);
 8                                                                 // 信息
 9 //        String msg_context_base64 = msg_base64.split(" ")[1];
10         String msg = NoteUtil.base64Decode(msg_base64);// 解密，解密后：username:password
11         String name = msg.split(":")[0];
12         String pwd = msg.split(":")[1];
13         NoteResult result = service.checkUser(name, pwd);
14         System.out.println("result  "+result.toString());
15         JSONArray json=JSONArray.fromObject(result);
16         System.out.println("  "+callback+"("+json+")");
17         return callback+"("+json.toString()+")";
18     }
19