使用HttpGet,closeableHttpClient,HttpClients,CloseableHttpResponse实现本地访问web服务器

一、架包

httpclient-4.4.1.jar  httpcore-4.4.1.jar   httpmime-4.2.jar

二、例子

String url="http://xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";

HttpGet httpGet = new HttpGet(url);
        CloseableHttpClient httpclient = HttpClients.createDefault();
        CloseableHttpResponse response = httpclient.execute(httpGet);
        int statusCode = response.getStatusLine().getStatusCode();
        if (statusCode != 200) {
            httpGet.abort();
            throw new RuntimeException("HttpClient,error status code :" + statusCode);
        }
        HttpEntity entity = response.getEntity();
        String result = null;
        if (entity != null) {
            result = EntityUtils.toString(entity, "utf-8");
            EntityUtils.consume(entity);
            response.close();
            System.out.println(result);
        }

 

三、使用多线程以及CountDownLatch实现共同访问

public class Test {
public static void main(String[] args) {
    CountDownLatch latch=new CountDownLatch(1);
    String url="http://test.meyki.net:9080/apidev/v3/goods/goodsList/eyJwYWdlU2l6ZSI6IjIwIiwib3MiOiJpb3MiLCJzaG9wSWQiOiI1MTU2MjNmNGVlOGU0OGIxYmU3MmY2MGFiOTcxZTExOSIsInVzZXJJZCI6IjIyNTg0MDVmYTU5ODRlOTViNWI2NTI4ZTM3YmExODBjIiwicGFnZU5vIjoiMSIsImlzU2hlbHZlcyI6IjEiLCJ2Y29kZSI6IjE0MCIsInRhZyI6IjEifQ==";
    for(int i=0;i<=15;i++){
        Thread thread=new Thread(new Mythread(latch,url));
        thread.start();
    }
    latch.countDown();
}
}
 1 package com.meyki.common;
 2 
 3 import java.io.IOException;
 4 import java.util.concurrent.CountDownLatch;
 5 
 6 import org.apache.http.HttpEntity;
 7 import org.apache.http.ParseException;
 8 import org.apache.http.client.methods.CloseableHttpResponse;
 9 import org.apache.http.client.methods.HttpGet;
10 import org.apache.http.impl.client.CloseableHttpClient;
11 import org.apache.http.impl.client.HttpClients;
12 import org.apache.http.util.EntityUtils;
13 
14 import okhttp3.OkHttpClient;
15 import okhttp3.Request;
16 import okhttp3.Response;
17 
18 public class Mythread  implements Runnable{
19     private final CountDownLatch startSignal;
20     private  String url;
21     public Mythread(CountDownLatch  startSignal,String url){
22         super();
23         this.startSignal=startSignal;
24         this.url=url;
25     }
26     @Override
27     public void run() {
28         try {
29             startSignal.await();
30         } catch (InterruptedException e) {
31             // TODO Auto-generated catch block
32             e.printStackTrace();
33         }
34         try {
35             dowork();
36         } catch (ParseException e) {
37             // TODO Auto-generated catch block
38             e.printStackTrace();
39         } catch (IOException e) {
40             // TODO Auto-generated catch block
41             e.printStackTrace();
42         }
43     }
44     private void dowork() throws ParseException, IOException {
45         
46         //使用HttpGet,closeableHttpClient,HttpClients,CloseableHttpResponse在本地访问
47         HttpGet httpGet = new HttpGet(url);
48         CloseableHttpClient httpclient = HttpClients.createDefault();
49         CloseableHttpResponse response = httpclient.execute(httpGet);
50         int statusCode = response.getStatusLine().getStatusCode();
51         if (statusCode != 200) {
52             httpGet.abort();
53             throw new RuntimeException("HttpClient,error status code :" + statusCode);
54         }
55         HttpEntity entity = response.getEntity();
56         String result = null;
57         if (entity != null) {
58             result = EntityUtils.toString(entity, "utf-8");
59             EntityUtils.consume(entity);
60             response.close();
61             System.out.println(result);
62         }
63         //使用OkhttpClient
64         /*OkHttpClient   httpClient=new OkHttpClient();
65         Request request=new Request.Builder()
66                         .url(url)
67                         .build();
68         //得到response对象
69         Response response=httpClient.newCall(request).execute();
70         if(response.isSuccessful()){
71             String result=response.body().string();
72             System.out.println(response.code());
73             System.out.println(response.message());
74             System.out.println(result);
75         }*/
76     }
77         
78 }

 

posted @ 2018-05-25 15:05  逝年的我们  阅读(3021)  评论(0)  编辑  收藏  举报