java后台发起get请求获取响应数据

package com.jl.chromeTest;import java.io.BufferedReader;import java.io.InputStreamReader;import java.net.HttpURLConnection;import java.net.URL;import java.net.URLConnection;import java.nio.charset.StandardCharsets;/** * get请求测试 * @author liujilong * @since 2019-7-18 10:26:49 */public class Test { @org.junit.Test  public void test() throws Exception{  String result = get("http://www.baidu.com");  System.out.println("result====="+result); } /**  * get请求  * @param url  * @return  * @throws Exception  */ public String get(String url) throws Exception {  String content = null;  URLConnection urlConnection = new URL(url).openConnection();  HttpURLConnection connection = (HttpURLConnection) urlConnection;  connection.setRequestMethod("GET");  //连接  connection.connect();  //得到响应码  int responseCode = connection.getResponseCode();  if (responseCode == HttpURLConnection.HTTP_OK) {   BufferedReader bufferedReader = new BufferedReader(new InputStreamReader     (connection.getInputStream(), StandardCharsets.UTF_8));   StringBuilder bs = new StringBuilder();   String l;   while ((l = bufferedReader.readLine()) != null) {    bs.append(l).append("/n");   }   content = bs.toString();  }  return content; }}