如何将JSON中Java对象的实例类型发送给Java Spring-Server Post请求？

import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpEntity;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.web.client.RestTemplate;

public class Main {
    public static void main(String[] args) {
        RestTemplate restTemplate = new RestTemplate();

        // 设置请求头为application/json
        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.APPLICATION_JSON);

        // 创建要发送的Java对象实例
        MyObject myObject = new MyObject();
        // 设置对象属性

        // 创建HttpEntity对象，包含请求体和请求头
        HttpEntity<MyObject> requestEntity = new HttpEntity<>(myObject, headers);

        // 发送POST请求
        String url = "http://example.com/api/endpoint";
        ResponseEntity<String> responseEntity = restTemplate.postForEntity(url, requestEntity, String.class);

        // 处理返回结果
        if (responseEntity.getStatusCode().is2xxSuccessful()) {
            String response = responseEntity.getBody();
            // 处理响应数据
        }
    }
}