JAVA代码（GET方式）请求URL

/**
 * 
 * @param url
 * @param request
 * @return
 */

public static String sendMessage(String url, HttpServletRequest request) {
   CloseableHttpClient httpClient = HttpClientBuilder.create().build();
   HttpGet httpGet = new HttpGet(url);  //url:请求地址 get请求
   httpGet.addHeader(HTTP.CONTENT_TYPE, "application/json;charset=UTF-8");
   try {
      HttpResponse res = httpClient.execute(httpGet);
      String rtn = EntityUtils.toString(res.getEntity());
      return rtn;
   } catch (Exception e) {
      e.printStackTrace();
   } finally {
      httpGet.releaseConnection();
   }
   return null;
}

JAVA代码（GET方式）请求URL

原文：https://www.cnblogs.com/pxblog/p/10524167.html