SerializeWriter：相当于StringBuffer

JSONArray：相当于List<Object>

比如说List<Strudent>

List转Json

List<Student> students = new ArrayList();

String str = JSON.toJSONString(students); // List转json

Json 转List 方法一

String json = ""; //获取的Json数据

List<Student> students = JSON.parseObject(json,new TypeReference<List<Student>>(){}); // Json 转List

Json 转List方法二

List<Student> students = JSON.parseArray(json,Student.class);

Student 对象要实现Serializable接口

import java.io.Serializable;  

public class Student implements Serializable{ 

借鉴大佬文章装逼下：https://www.tuicool.com/articles/zUbQfa