java小程序检测web的并发数---HttpClient和util包的concurrent

1.下载org.apache.commons.httpclient.jar文件。

2.利用HttpClient访问web网站(url)。

3.利用多线程测试并发数。java.util.concurrent包实现并发。

代码如下：

 1 import java.io.IOException;
 2 import java.util.concurrent.ExecutorService;
 3 import java.util.concurrent.Executors;
 4 import java.util.concurrent.TimeUnit;
 5
 6 import org.apache.commons.httpclient.HttpClient;
 7 import org.apache.commons.httpclient.HttpException;
 8 import org.apache.commons.httpclient.HttpMethod;
 9 import org.apache.commons.httpclient.methods.GetMethod;
10
11
12
13
14 public class Ceshi {
15
16     /**
17      * @param args
18      * @throws IOException
19      * @throws HttpException
20      * @throws InterruptedException
21      */
22     public static void main(String[] args) throws HttpException, IOException, InterruptedException {
23         ExecutorService service=Executors.newFixedThreadPool(Integer.MAX_VALUE);
24         int i = 0;
25         for ( i= 0; i < 4000; i++) {
26             System.out.println("number " + (i+1) + " starts");
27             service.execute(new Runnable() {
28                 @Override
29                 public void run() {
30                     try {
31                         ceshi();
32                     } catch (HttpException e) {
33                         System.out.println("HttpException");
34                         e.printStackTrace();
35                     } catch (IOException e) {
36                         System.out.println("IOException");
37                         e.printStackTrace();
38                     }
39                 }
40             });
41             System.out.println("number " + (i+1) + " ends");
42         }
43
44         service.shutdown();
45
46
47         service.awaitTermination(300,TimeUnit.SECONDS);
48
49         System.out.println("ok");
50
51     }
52
53
54     private static void ceshi() throws HttpException, IOException{
55         HttpClient client = new HttpClient();
56
57         client.getHostConfiguration().setHost("9.186.62.58",8080,"http");
58
59         HttpMethod method = getGetMethod();//使用POST方式提交数据
60
61         client.executeMethod(method);
62
63         //打印服务器返回的状态
64
65         System.out.println(method.getStatusLine());
66
67         //打印结果页面
68
69         String response = new String(method.getResponseBodyAsString().getBytes("GB2312"));
70
71         //打印返回的信息
72
73         System.out.println(response);
74
75         method.releaseConnection();
76     }
77
78     private static HttpMethod getGetMethod(){
79
80         return new GetMethod("/BiMaiApp/airdetailpage?cityIDs=1");
81
82         }
83
84 }