以下为真实案例，供日常开发使用

java">package com.somnus.json;import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.somnus.custom.domain.Area;
import com.somnus.custom.domain.Employee;
import com.somnus.custom.domain.EmployeeModel;
import org.junit.Test;import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.List;/*** @Author: Asan* @Date: 2024/1/11 14:39* @Description:演示fastjson实现复制： jar包：com.alibaba.fastjson* 备注： 将一个对象转换为json字符串* (JSONObject)JSONObject.toJSON(实体对象);//将实体对象转换为JSON对象* JSON.parseArray(String str,Class class);//将json字符串类型转换为list集合* JSON.parseObject(String str,Class class);//将json字符串类型转换为实体对象* JSON.parseObject(String text);//将json字符串类型转换为JOSN对象*/
public class FastJsonTest {@Testpublic void testCP() {String dateTime = LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));//fastjson实现复制List<Employee> list = new ArrayList<>();Employee employee1 = new Employee();employee1.setEmpId("1001");employee1.setEmpName("张珊");employee1.setOrgId("001");employee1.setOrgName("常熟");employee1.setCreateTime(dateTime);employee1.setUpdateTime(dateTime);Employee employee2 = new Employee();employee2.setEmpId("1002");employee2.setEmpName("王五");employee2.setOrgId("002");employee2.setOrgName("苏州");employee2.setCreateTime(dateTime);employee2.setUpdateTime(dateTime);list.add(employee1);list.add(employee2);//将一个List<Employee> 转为List<EmployeeModel>List<EmployeeModel> data = JSON.parseArray(JSON.toJSONString(list), EmployeeModel.class);System.out.println("fastjson实现复制,复制集合：" + JSON.toJSONString(data));Employee employee3= new Employee();employee3.setEmpId("1003");employee3.setEmpName("李萌");employee3.setOrgId("003");employee3.setOrgName("南京");employee3.setCreateTime(dateTime);employee3.setUpdateTime(dateTime);EmployeeModel model=JSON.parseObject(JSON.toJSONString(employee3),EmployeeModel.class);System.out.println("fastjson实现复制，复制对象："+JSON.toJSONString(model));}@Testpublic void test2() {//fastjson实现将java对象转换为json object对象Area area1 = new Area();area1.setCode("001");area1.setName("江苏省");JSONObject obj=JSON.parseObject(JSON.toJSONString(area1));System.out.println("fastjson实现将java对象转换为json object对象：" + JSON.toJSONString(obj));}}