springboot工程中发送post和get请求

import com.alibaba.fastjson.JSONObject;
import org.springframework.http.*;
import org.springframework.stereotype.Component;
import org.springframework.web.client.RestTemplate;
import java.util.HashMap;
import java.util.List;
import java.util.Map;


@Component
public class Utils {

    public static JSONObject sendPostRequest(String Url, Map<String,String> headerMap, JSONObject myBody)
    {
        // 创建 RestTemplate 实例
        RestTemplate restTemplate = new RestTemplate();

        // 设置请求头
        HttpHeaders headers = new HttpHeaders();
        if(headerMap!=null)
        {
            if(!headerMap.containsKey("Content-Type"))
            {
                headers.setContentType(MediaType.APPLICATION_JSON);
            }
            for(Map.Entry<String,String> entry:headerMap.entrySet())
            {
                headers.set(entry.getKey(),entry.getValue());
            }
        }
        else
        {
            headers.setContentType(MediaType.APPLICATION_JSON);
        }
        // 构造 HttpEntity 对象
        HttpEntity<String> requestEntity = new HttpEntity<>(myBody.toString(), headers);

        // 发送 POST 请求
        try {
            ResponseEntity<String> responseEntity = restTemplate.exchange(Url, HttpMethod.POST, requestEntity, String.class);
            // 获取响应结果
            String responseBody = responseEntity.getBody();
//            System.out.println(responseBody);
            JSONObject myResJson = JSONObject.parseObject(responseBody);
            return myResJson;

        }catch (Exception e)
        {
            e.printStackTrace();
            return null;
        }
    }

    public static JSONObject sendGetRequest(String url, Map<String,String>headerMap, Map<String,String>queryParams)
    {
        String myUrl = url;
        RestTemplate restTemplate = new RestTemplate();
        HttpHeaders headers = new HttpHeaders();
        if(headerMap!=null)
        {
            for(Map.Entry<String,String> entry:headerMap.entrySet())
            {
                headers.set(entry.getKey(),entry.getValue());
            }
        }
        if(queryParams!=null && !queryParams.isEmpty())
        {
            StringBuffer urlBuffer = new StringBuffer(url);
            urlBuffer.append("?");
            queryParams.forEach((key,value)->urlBuffer.append(key).append("=").append(value).append("&"));
            myUrl = urlBuffer.substring(0,urlBuffer.length()-1);
        }
        // 构造 HttpEntity 对象
        HttpEntity<Void> requestEntity = new HttpEntity<>(headers);
        ResponseEntity<String> responseEntity = restTemplate.exchange(myUrl, HttpMethod.GET, requestEntity, String.class);
        // 获取响应结果
        String responseBody = responseEntity.getBody();
//            System.out.println(responseBody);
        JSONObject myResJson = JSONObject.parseObject(responseBody);
        return myResJson;

    }

}