java - Json 序列化为带有嵌套 List 属性的 java pojo

Question

下面是我的代码尝试通过 JQuery Ajax 调用 Spring MVC Controller 来发布 Json 序列化对象(具有其他 pojo 列表的 java pojo)。

从服务器收到错误请求错误。

当从 Json 对象中删除 modalForm 数据时，MainPojo 数据在服务器端正确接收。

HTML代码

   Fisrt form
   ------------- 
    <form id="mainForm">
           .....
    </form>

    Form in the modal
    -----------------
    <form  id="modelform" ..>
         <div id="row"> 
    <input type="text" id="subject" />
    <input type="text" id="max" />
    <input type="text" id="min" />
      </div>
     <div id="row"> 
    <input type="text" id="subject" />
    <input type="text" id="max" />
    <input type="text" id="min" />
     </div>
         ............. 
    </form>}

Jquery

          var mainObject = $('#mainForm').serializeObject();

          var modelObject = $('#modelform').serializeObject();

          mainObject.marks = modelObject;

Json(预期)

          {
            "name": "Some Name",
             "age": "10",
             "marks": [
               {
                 "subject": "maths",
                 "max": "20",
             "min":"12"
                },
               {
                 "subject": "english",
                 "max": "20",
             "min":"12",
                }
              ]
          }

Json(上面代码的实际输出)

           {
             "name": "Some Name",
              "age": "10",
              "marks": [
                        {
                         "subject": "maths",
                         "subject": "english"
                         },
                         {
                          "max": "20",
                       "max":"20",
                          },
                      {
                       "min": "12",
                       "min":"12"
                       }
                          ]
               }

                 //Ajax call
                 $.ajax({
                       url: '/save',
                   type: 'POST',
                   contentType: 'application/json',
                   mimeType: 'application/json',
                   data : JSON.stringify(mainObject),
                   dataType: 'json',
                   success: function(data) {
                      alert(data.msg);
                   },
                   error:function (xhr, ajaxOptions, thrownError) {
                      alert('Technical error occured');
                   }
           });

Java Pojo 的

          public class MainPojo {

            private String name;
            private String age;            
                private Lists<marks>
                ..................
          }

          public class ModelPojo {

            private String subject;
            private String maxMarks;
            private String minMarks;

                .....................
            }

Controller 方法

@RequestMapping(value = "save", headers = "Accept=application/json",
                method = RequestMethod.POST)
public @ResponseBody String save(@RequestBody final  MainPojo  mainPojo) {

} 

请帮我找出问题所在。

谢谢。

Answer 1

像这样修改html文本

     <form id="mainForm">
    <input name="name" type="text" value="Some Name">
    <input name="age" type="text" value="20">
     </form>
     <form  class="modelform">

    <input type="text" value="subject" name="subject"/>
    <input type="text" value="max" name="max"/>
    <input type="text" value="min" name="min"/>
      </form>
     <form  class="modelform">
    <input type="text" value="subject" name="subject" />
    <input type="text" value="max" name="max"/>
    <input type="text" value="min"  name="min"/>
   </form>

然后编写javascript代码来分配对象值

<script>
    var mainObject = $('#mainForm').serializeObject();
    var modelObject = [];
     $('.modelform').each(function(o){
        modelObject.push($(this).serializeObject());
    })
    mainObject.marks = modelObject;
</script>