使用了阿里巴巴的 fastjson 首先引入依賴
<dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>2.0.32</version> </dependency>
import com.alibaba.fastjson.JSONObject;
import com.example.springbootdemo.domain.dto.Student;
import lombok.extern.log4j.Log4j2;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* @Author Let's go Lakers
* @Date 2023/5/30
**/
@Log4j2
public class JsonToListTest {
public static void main(String[] args) {
List<Student> studentList = new ArrayList<>();
Student student1 = new Student("張三", 23, "女", "山東省煙臺(tái)市芝罘區(qū)環(huán)海路2號(hào)");
Student student2 = new Student("李四", 19, "男", "安徽省六安市霍邱縣安徽霍邱經(jīng)濟(jì)開(kāi)發(fā)區(qū)G35濟(jì)廣高速");
studentList.add(student1);
studentList.add(student2);
Map<String, Object> param = new HashMap<>();
param.put("studentList", studentList);
// 把List對(duì)象集合作為json格式推給第三方接口
log.info("入?yún)ⅲ?quot; + JSONObject.toJSONString(param));
// 調(diào)用三方接口
//HttpUtil.post("/urlTest", JSONObject.toJSONString(param), 5);
// 三方接收并轉(zhuǎn)為list對(duì)象集合
String result = JSONObject.toJSONString(param);
log.info("三方接收：" + result);
JSONObject studentJson = JSONObject.parseObject(result);
// 轉(zhuǎn)成list對(duì)象集合
List<Student> studentLists = JSONObject.parseArray(studentJson.get("studentList").toString(), Student.class);
log.info("studentList: " + studentList);
log.info("studentLists: " + studentLists);
}
}09:47:06.833 [main] INFO com.example.springbootdemo.Test.JsonToListTest - 入?yún)ⅲ簕"studentList":[{"address":"山東省煙臺(tái)市芝罘區(qū)環(huán)海路2號(hào)","age":23,"name":"張三","sex":"女"},{"address":"安徽省六安市霍邱縣安徽霍邱經(jīng)濟(jì)開(kāi)發(fā)區(qū)G35濟(jì)廣高速","age":19,"name":"李四","sex":"男"}]}
09:47:06.836 [main] INFO com.example.springbootdemo.Test.JsonToListTest - 三方接收：{"studentList":[{"address":"山東省煙臺(tái)市芝罘區(qū)環(huán)海路2號(hào)","age":23,"name":"張三","sex":"女"},{"address":"安徽省六安市霍邱縣安徽霍邱經(jīng)濟(jì)開(kāi)發(fā)區(qū)G35濟(jì)廣高速","age":19,"name":"李四","sex":"男"}]}
09:47:06.855 [main] INFO com.example.springbootdemo.Test.JsonToListTest - studentList: [Student(name=張三, age=23, sex=女, address=山東省煙臺(tái)市芝罘區(qū)環(huán)海路2號(hào)), Student(name=李四, age=19, sex=男, address=安徽省六安市霍邱縣安徽霍邱經(jīng)濟(jì)開(kāi)發(fā)區(qū)G35濟(jì)廣高速)]
09:47:06.855 [main] INFO com.example.springbootdemo.Test.JsonToListTest - studentLists: [Student(name=張三, age=23, sex=女, address=山東省煙臺(tái)市芝罘區(qū)環(huán)海路2號(hào)), Student(name=李四, age=19, sex=男, address=安徽省六安市霍邱縣安徽霍邱經(jīng)濟(jì)開(kāi)發(fā)區(qū)G35濟(jì)廣高速)]
Process finished with exit code 0來(lái)源：https://blog.csdn.net/zxc_wzhzjqeds/article/details/130941993