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;
 }
}