SpringMVC深入—Json数据交互

前言

@RequestBody
- 直接将请求中的json格式的数据绑定为对象类型
@ResponseBody
- 直接将响应中的对象类型返回为json格式数据

演示案例

引入jar包

案例1单对象

编写controller方法

@RequestMapping(value="/test5.action", method = RequestMethod.POST)
@ResponseBody
public User test5(@RequestBody User user) {
    System.out.println("test5:"+user);
    return user;
}

请求页面

$(document).ready(function(){
    var user = {'password':'123','name':'hdq','id':1};

    $("#mybutton").click(function(){
        $.ajax({
            url: "test5.action",
            type: "post",
            dataType:"json",
            contentType:"application/json",
            data: JSON.stringify(user),
            success: function(data){
                alert(data);
                console.log(data);
            },
            error:function(data){
                console.log(data);
            }
        });
    });
});

测试结果

案例2多对象

编写controller方法

@RequestMapping(value = "/test6.action", method = {RequestMethod.POST })
@ResponseBody
public List<User> test6(@RequestBody List<User> users) {
        System.out.println(users);
        return users;
}

请求页面

$(document).ready(function(){
    $("#mybutton").click(function(){
        var saveDataAry=[];
        var data1={"password":"123","name":"gz","id":1};
        var data2={"password":"456","name":"gr","id":2};
        saveDataAry.push(data1);
        saveDataAry.push(data2);
        $.ajax({
            type:"POST",
            url:"test6.action",
            dataType:"json",
            contentType:"application/json",
            data:JSON.stringify(saveDataAry),
            success:function(data){
                alert(data);
                console.log(data);
            }
        });
    });
});