阿里巴巴的json使用时的一些转换方法

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;

import java.util.HashMap;
import java.util.Map;

/**
* Created by jiangzw on 2017/10/17.
*/
public class JsonDemo {

???public static void main(String[] args) {
???????JsonDemo jsonDemo = new JsonDemo();

// ???????jsonDemo.jsonString2JsonObject();
// ???????jsonDemo.javaObject2JsonObject();
// ???????jsonDemo.javaObject2JsonString();
// ???????jsonDemo.jsonObject2JavaObject();
// ???????jsonDemo.jsonString2JavaObject();
???????jsonDemo.map2JsonObject();
???}

???/**
????* json字符串转换成json对象
????*/
???public void jsonString2JsonObject() {
???????String jsonString = "{\"name\":\"jzw\"}";
???????JSONObject jsonObject = JSON.parseObject(jsonString);
???????System.out.println(jsonObject.get("name"));
???}

???/**
????* java对象转换成json对象
????*/
???public void javaObject2JsonObject() {
???????User user = new User("1001", "jzw");
???????JSONObject jsonObject = (JSONObject)JSON.toJSON(user);
???????System.out.println(jsonObject.get("id"));
???}

???/**
????* java对象转换成json字符串
????*/
???public void javaObject2JsonString() {
???????User user = new User("1001", "jzw");
???????String jsonString = JSON.toJSONString(user);
???????System.out.println(jsonString);
???}

???/**
????* json对象转换成java对象
????*/
???public void jsonObject2JavaObject() {
???????JSONObject jsonObject = new JSONObject();
???????jsonObject.put("id", "1001");
???????jsonObject.put("name", "jzw");
???????User user = JSON.toJavaObject(jsonObject, User.class);
???????System.out.println("id= " + user.getId());
???????System.out.println("name= " + user.getName());
???}

???/**
????* json字符串转换成java对象
????*/
???public void jsonString2JavaObject() {
???????String jsonString = "{\"id\":\"1001\", \"name\":\"jzw\"}";
???????User user = JSON.parseObject(jsonString, User.class);
???????System.out.println("id= " + user.getId());
???????System.out.println("name= " + user.getName());
???}

???/**
????* map转换成json对象
????*/
???public void map2JsonObject() {
???????Map<String, String> map = new HashMap<String, String>();
???????map.put("id", "1001");
???????map.put("name", "jzw");
???????JSONObject jsonObject = (JSONObject)JSON.toJSON(map);
???????System.out.println(jsonObject.get("id"));
???????System.out.println(jsonObject.get("name"));
???}

???public static class User {
???????String id;
???????String name;

???????public User() {
???????}

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

???????public String getId() {
???????????return id;
???????}

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

???????public String getName() {
???????????return name;
???????}

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

}

阿里巴巴的json使用时的一些转换方法

原文地址：http://www.cnblogs.com/wutongin/p/7779094.html