最近在工作的过程中有遇到httpClient接口，今天特意些一个小示例对这个知识点进行温习。
下面是代码小片段：
1 package com.sinosoft.lis.mgubq.zhaoyongqiang; 2 3 import org.apache.http.HttpEntity; 4 import org.apache.http.client.ClientProtocolException; 5 import org.apache.http.client.methods.CloseableHttpResponse; 6 import org.apache.http.client.methods.HttpGet; 7 import org.apache.http.impl.client.CloseableHttpClient; 8 import org.apache.http.impl.client.HttpClients; 9 import org.apache.http.util.EntityUtils; 10 11 import java.io.IOException; 12 13 /** 14 * Created by zyq on 2019/9/11. 15 */ 16 public class HttpClientTest { 17 //练习使用HttpClient接口的使用 18 public static void main(String[] args) { 19 // 创建httpClient实例 20 CloseableHttpClient httpClient = HttpClients.createDefault(); 21 // 创建httpGet实例 22 HttpGet httpGet = new HttpGet("https://www.baidu.com"); // http://www.tuicool.com/ 23 CloseableHttpResponse response; 24 try { 25 response = httpClient.execute(httpGet); 26 if(response != null){ 27 HttpEntity entity = response.getEntity(); // 获取网页内容 28 String result = EntityUtils.toString(entity, "UTF-8"); 29 System.out.println("网页内容：" + result); 30 } 31 if(response != null){ 32 response.close(); 33 } 34 if(httpClient != null){ 35 httpClient.close(); 36 } 37 } catch (ClientProtocolException e) { 38 // TODO Auto-generated catch block 39 e.printStackTrace(); 40 } catch (IOException e) { 41 // TODO Auto-generated catch block 42 e.printStackTrace(); 43 } 44 45 } 46 }
最终的运行结果：（这个应该就是我们非常熟悉的百度的首页的html代码了）
1 网页内容：<!DOCTYPE html> 2 <!--STATUS OK--><html> <head><meta http-equiv=content-type content=text/html;charset=utf-8><meta http-equiv=X-UA-Compatible content=IE=Edge><meta content=always name=referrer><link rel=stylesheet type=text/css href=https://ss1.bdstatic.com/5eN1bjq8AAUYm2zgoY3K/r/www/cache/bdorz/baidu.min.css><title>百度一下，你就知道</title></head> <body link=#0000cc> <div id=wrapper> <div id=head> <div class=head_wrapper> <div class=s_form> <div class=s_form_wrapper> <div id=lg> <img hidefocus=true src=//www.baidu.com/img/bd_logo1.png width=270 height=129> </div> <form id=form name=f action=//www.baidu.com/s class=fm> <input type=hidden name=bdorz_come value=1> <input type=hidden name=ie value=utf-8> <input type=hidden name=f value=8> <input type=hidden name=rsv_bp value=1> <input type=hidden name=rsv_idx value=1> <input type=hidden name=tn value=baidu><span class="bg s_ipt_wr"><input id=kw name=wd class=s_ipt value maxlength=255 autocomplete=off autofocus=autofocus></span><span class="bg s_btn_wr"><input type=submit id=su value=百度一下 class="bg s_btn" autofocus></span> </form> </div> </div> <div id=u1> <a href=http://news.baidu.com name=tj_trnews class=mnav>新闻</a> <a href=https://www.hao123.com name=tj_trhao123 class=mnav>hao123</a> <a href=http://map.baidu.com name=tj_trmap class=mnav>地图</a> <a href=http://v.baidu.com name=tj_trvideo class=mnav>视频</a> <a href=http://tieba.baidu.com name=tj_trtieba class=mnav>贴吧</a> <noscript> <a href=http://www.baidu.com/bdorz/login.gif?login&tpl=mn&u=http%3A%2F%2Fwww.baidu.com%2f%3fbdorz_come%3d1 name=tj_login class=lb>登录</a> </noscript> <script>document.write('<a href="http://www.baidu.com/bdorz/login.gif?login&tpl=mn&u='+ encodeURIComponent(window.location.href+ (window.location.search === "" ? "?" : "&")+ "bdorz_come=1")+ '" name="tj_login" class="lb">登录</a>'); 3 </script> <a href=//www.baidu.com/more/ name=tj_briicon class=bri style="display: block;">更多产品</a> </div> </div> </div> <div id=ftCon> <div id=ftConw> <p id=lh> <a href=http://home.baidu.com>关于百度</a> <a href=http://ir.baidu.com>About Baidu</a> </p> <p id=cp>©2017 Baidu <a href=http://www.baidu.com/duty/>使用百度前必读</a> <a href=http://jianyi.baidu.com/ class=cp-feedback>意见反馈</a> 京ICP证030173号 <img src=//www.baidu.com/img/gs.gif> </p> </div> </div> </div> </body> </html>
HttpClient与CloseableHttpClient
https://www.jianshu.com/p/82f30208ae56