Ajax传递数据前后端代码样例

前端

$.ajax({
 url:prefix+'/testSave',
 data:JSON.stringify({"a":1,"b":2}),
 cache:false,
 contentType:'application/json;charset=utf-8',
 type:'POST',
 success:function(result){
    alert(result.msg);
  }
});

后端

@PostMapping("/testSave")
@ResponseBody
public AjaxResult testSave(@RequestBody Map map){
   return AjaxResult.success("处理成功！", map);
}