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java http proxy

package afu.proxy;

import java.net.*;

import java.io.*;

import org.apache.commons.httpclient.*;

import org.apache.commons.httpclient.methods.*;

public class HttpProxy extends Thread

{

public static int threadNumber = 0;

private static MultiThreadedHttpConnectionManager

connectionManager = new MultiThreadedHttpConnectionManager();

private Socket proxyServer;

public HttpProxy(Socket ps)

{

threadNumber ++;

proxyServer = ps;

}

public void run()

{

DataInputStream proxyIn = null;

try

{

String clientIP = proxyServer.getInetAddress().toString().substring(1);

System.out.println("client ip is " + clientIP);

/**

* visit outside websites through proxy server

proxyIn = new DataInputStream(proxyServer.getInputStream());

String head = proxyIn.readLine();//read the first row

String method = getMethod(head);

String requestUrl = getUrl(method.length() + 1 ,head);

proxy(method,requestUrl);

threadNumber --;

}

catch(Exception e)

{

//e.printStackTrace();

}

finally

{

try

{

if(proxyIn!=null)

proxyIn.close();

proxyIn = null;

}

catch(Exception e)

{

}

private void proxy(final String methodName,final String requestUrl)

{

DataOutputStream proxyOut = null;

InputStream webIn = null;

HttpMethod method = null;

try

{

HttpClient client = new HttpClient(connectionManager);

if("POST".equals(methodName))

method = new PostMethod(requestUrl);

else

method = new GetMethod(requestUrl);

client.executeMethod(method);

webIn = new DataInputStream(new BufferedInputStream(method.getResponseBodyAsStream(),10240));

proxyOut = new DataOutputStream(proxyServer.getOutputStream());

int num = webIn.read();

while(num!=-1)

{

proxyOut.write(num);

num = webIn.read();

}

proxyOut.flush();

client = null;

}//try

catch(Exception e)

{

//e.printStackTrace();

}

finally

{

try

{

proxyOut.close();

webIn.close();

if(method!=null)

method.releaseConnection();

proxyOut = null;

webIn = null;

proxyServer.close();

}

catch(Exception e)

{

}

private String getMethod(final String head)

{

if(head.indexOf("POST")!=-1)

return "POST";

return "GET";

}

private String getUrl(final int startPos,final String head)

{

int loc = head.indexOf("HTTP/1.");

return head.substring(startPos,loc - 1);

}

package afu.proxy;

import java.net.ServerSocket;

import java.net.Socket;

public class StartProxy

{

public void doProxy()

{

int port = 808;

System.out.println("在端口" + port +"啟動代理服務");

try

{

ServerSocket ss = new ServerSocket(port);

while(true)

{

if(HttpProxy.threadNumber > 8)

try

{

Thread.sleep(500);

}

catch(Exception ignored )

{}

else

{

Socket socket = ss.accept();

HttpProxy proxy = new HttpProxy(socket);

proxy.start();

}

catch(Exception e)

{

e.printStackTrace();

}

網上找了很多開源的java http代理程序，都不好用，最后還是自己寫了一個。

posted on 2008-08-27 15:41 afunms 閱讀(2458) 評論(1) 編輯收藏

Feedback

# re: java http proxy 2010-03-23 08:31 Ganky

你真牛！感覺比我以前下載的好回復更多評論

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afunms

java http proxy

Feedback

# re: java http proxy 2010-03-23 08:31 Ganky

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