JQuery Ajax-ajax () method

1.jsp page

functionOnsaveclick (BTN) {//Save$.ajax ({URL:"", type:"POST", Data: $ ("#form"). Serialize (), the data sent to the server must be in the Key/value format for example: {"AA": $ ("#id"). Val ()}, DataType:' JSON ', the data type returned by the server success:function(data) {if(data.success = = ' true ') {alert (' Operation succeeded! ');                        } Else{alert (' Operation failed: ' +data.msg); }}, Error:function() {alert ("Network Error");    }                }); }

2. Backstage (two kinds of return page data)

// Save     @RequestMapping ("/save")     @ResponseBody     public  String Save (User user) {           Try  {             //Operation return "{\" success\ ": \" true\ "}";          Catch (Exception e) {             e.printstacktrace ();              return "{\" success\ ": \" false\ ", \" msg\ ": \" "+ e.getmessage () +" \ "}";         }     }

//Save@RequestMapping (Value= "/save") @ResponseBody PublicObject Save (user user){Map<String,Object> map =NewHashmap<string, object>(); Try{String ID=meetingservice.save (form). GetId (); Map.put ("Success",true);        }Catch(Exception e) { //Operation Map.put ("Success",false); Map.put ("MSG", E.getmessage ()); }        returnmap; }

JQuery Ajax-ajax () method