java小程式檢測web的並發數---HttpClient和util包的concurrent

標籤：

1.下載org.apache.commons.httpclient.jar檔案。

2.利用HttpClient訪問web網站(url)。

3.利用多線程測試並發數。java.util.concurrent包實現並發。

代碼如下：

 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 args18      * @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                 @Override29                 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方式提交資料60 61         client.executeMethod(method);62 63         //列印伺服器返回的狀態64 65         System.out.println(method.getStatusLine());66 67         //列印結果頁面68 69         String response = new String(method.getResponseBodyAsString().getBytes("GB2312"));70 71         //列印返回的資訊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 }

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java小程式檢測web的並發數---HttpClient和util包的concurrent