JSON串转换映射成java对象_JAVA_编程开发_程序员俱乐部

　　在工作中，经常会将JSON串转换映射成java对象，如下是fastjson和jsonLib将JSON串转换成JAVA对象的实例，特在此记录。

工程结构：

UserInfo.java

class="java" name="code">package com.bijian.test;

public class UserInfo {

    private String name;
    private int age;
    private String address;
    
    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 String getAddress() {
        return address;
    }
    public void setAddress(String address) {
        this.address = address;
    }
    @Override
    public String toString() {
        return "UserInfo [name=" + name + ", age=" + age + ", address=" + address + "]";
    }
}

Main.java

package com.bijian.test;

import com.alibaba.fastjson.JSON;

import net.sf.json.JSONObject;

public class Main {
    
    private static String jsonStr = "{\"name\":\"zhangshan\", \"age\": 10, \"address\": \"中国深圳\"}";
    
    public static void main(String[] args) {
        
        //JSON-LIB
        JSONObject jsonResult = JSONObject.fromObject(jsonStr);
        UserInfo userInfo = (UserInfo)JSONObject.toBean(jsonResult, UserInfo.class);
        System.out.println("userInfo:" + userInfo);
        
        //fastjson
        com.alibaba.fastjson.JSONObject jsonObject = JSON.parseObject(jsonStr);
        UserInfo userInfo2 = com.alibaba.fastjson.JSONObject.toJavaObject(jsonObject, UserInfo.class);
        System.out.println("userInfo2:" + userInfo2);
    }
}

?运行结果：

userInfo:UserInfo [name=zhangshan, age=10, address=中国深圳]
userInfo2:UserInfo [name=zhangshan, age=10, address=中国深圳]

　　当然，json-lib的使用坑可以进一步查看《JSONObject以及json串》一文了解。

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