响应JSON格式数据

前台代码

<script type="text/javascript">

      $(function () {
          $("#btn").click(function () {
             alert("kobe 24");
              $.ajax({
                  url:"testAjax2",
                  contentType: "application/json; charset=utf-8",
                //  data:'{"name":"kobe","age"："12","date":"2019/07/15"}', //错误写法,age有空格
                    data:'{"name":"zdww","age":"12","date":"2019-12-12"}',
                  dataType:"json",
                  type:"post",
                  success:function (data) {
                     // alert(data)
                  }
              });
          });
      });
    </script>

后台代码

  @RequestMapping("testAjax")
    public  void  testAjax(@RequestBody String body){

        //@RequestBody获得整个请求体的内容
        System.out.println("ajax方法");
        System.out.println(body);
    }


//响应json格式数据

    @RequestMapping("testAjax2")
    public  @ResponseBody People  testAjax(@RequestBody People people){
        System.out.println("响应json格式数据");
        people.setDate(new Date());
        System.out.println(people);
        return  people;
    }