fastjson之 JSON的用法

使用 fastjson-1.2.4.jar，一个解析json字符串jar包，由阿里巴巴工程师开发。

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User.java

 

package com.godcin.test.bean;

import java.util.List;

public class User {
    private String name;
    private int age;
    private List<String> habits;

    public String getName() {
        return name;
    }

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

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public List<String> getHabits() {
        return habits;
    }

    public void setHabits(List<String> habits) {
        this.habits = habits;
    }

}

 

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JSONTest.java

package com.godcin.test.json;

import java.util.ArrayList;
import java.util.List;

import com.alibaba.fastjson.JSON;
import com.godcin.test.bean.User;

public class JSONTest {

    public static void main(String[] args) {
        User user = new User();
        user.setName("张三");
        user.setAge(18);
        List<String> habits = new ArrayList<String>();
        habits.add("抽烟");
        habits.add("喝酒");
        user.setHabits(habits);

        String jsonStr = JSON.toJSONString(user);// bean类转json字符串
        System.out.println(jsonStr);//// 输入结果|{"age":18,"habits":["抽烟","喝酒"],"name":"张三"}
        
        user=JSON.parseObject(jsonStr, User.class);//json字符串转bean类
        System.out.println(user);// 输入结果|com.godcin.test.bean.User@2c13da15
        System.out.println("爱好："+user.getHabits());// 输入结果|爱好：[抽烟, 喝酒]

    }

}