httpclient
添加架包支持:
1 2 3 4 5 | <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpclient</artifactId> <version> 4.5 . 2 </version> </dependency> |
第一步是获取http客户端的实列,编写代码
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 | package com.java.httpclient; import java.io.IOException; import org.apache.http.HttpEntity; import org.apache.http.ParseException; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.methods.CloseableHttpResponse; import org.apache.http.client.methods.HttpGet; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClients; import org.apache.http.util.EntityUtils; public class Helloword { public static void main(String[] args) { CloseableHttpClient httpclient=HttpClients.createDefault(); //创建浏览器实列 HttpGet httpget= new HttpGet( "http://www.java1234.com" ); //创建get实列 CloseableHttpResponse response= null ; try { //执行get请求 response=httpclient.execute(httpget); } catch (ClientProtocolException e) { //http协议异常 e.printStackTrace(); } catch (IOException e) { //io异常 e.printStackTrace(); } //返回实体 HttpEntity entity=response.getEntity(); try { System.out.println( "输出实体:" +EntityUtils.toString(entity, "utf-8" )); } catch (ParseException e) { //解析异常 e.printStackTrace(); } catch (IOException e) { //io 异常 e.printStackTrace(); } try { response.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } |
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