Springmvc和ajax如何实现前后端交互

这篇文章主要介绍了Springmvc和ajax如何实现前后端交互,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下

springmvc使用@RequestBody来获取前端的json字符串并转化为java对象

使用@ReponseBody来将返回的java对象转换为json形式返回前端

下面是几个使用springmvc和ajax进行前后端交互的简单实例

1.传递简单对象：

前端：

 $(function(){ $("#btn3").click(function(){ //准备好要发的数组 var array=[16,18,56]; var jsonArray=JSON.stringify(array); $.ajax({ "url":"send/three/array.html", "type":"post", "data":jsonArray, "dataType":"text", "contentType":"application/json;charset=UTF-8", "success":function (response) { alert(response); }, "error":function (response) { alert(response); } } ); }); });

后端：

 @ResponseBody @RequestMapping("/send/three/array.html") public String testReceiveArrayThreee(@RequestBody List array){ for (int i : array) { System.out.println(i); } return "success"; }

结果：

2.传递复杂对象:

1.实体类：

 public class Student { private Integer stuId; private String studentName; private Address address; private List subjectList; private Map map; get和set方法省略 } public class Subject { private String subjectName; private Integer subjectScore;} public class Address { private String province; private String city; private String street;}

2.前端ajax:

 $(function(){ $("#btn4").click(function(){ //准备要发送的数据 var student={ "stuId":5, "studentName":"tom", "address":{ "province":"海南省", "city":"海南市", "street":"不知道" }, "subjectList":[ { "subjectName":"test", "subjectScore":60 }, { "subjectName":"ssm", "subjectScore":70 } ], "map":{ "k1":"v2", "k2":"v3", "k3":"v4" } }; //json对象转化为json字符串 var requestBody=JSON.stringify(student); $.ajax({ "url":"send/compose/object.json", "type":"post", "data":requestBody, "contentType":"application/json;charset=UTF-8", "dataType":"json", "success":function (response) { console.log(response); }, "error":function (response) { console.log(response); } } ); }); });

后端：

 @ResponseBody @RequestMapping("/send/compose/object.html") public String testComposeObject(@RequestBody Student student){ System.out.println(student.toString()); return "success"; }

结果：