一个简单的JSONDEMO

　用到的bean

　

public class User {
    private int id;
    private String name;
    private String password;

    public User() {
    }

    public User(int id, String name, String password) {
        this.id = id;
        this.name = name;
        this.password = password;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", password='" + password + '\'' +
                '}';
    }
}

华丽的分割线：+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

json转换的Bean

package com.example.demo.text;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.example.demo.bean.User;

/**
 * @date 2020/1/6 10:11
 */
public class t1 {
    public static void main(String[] args) {
        User user = new User(1,"老王","老王");
//        转成Json
        String json = JSON.toJSONString(user);
        System.out.println(json);
        final Object parse = JSON.parse(json);
        System.out.println(parse);
//        变成JavaBean对象
        final User user1 = JSONObject.parseObject(json, User.class);
        System.out.println(user1);
    }
}
华丽的分割线：——————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————
输出结果

{"id":1,"name":"老王","password":"老王"}
{"password":"老王","name":"老王","id":1}
User{id=1, name='老王', password='老王'}