java使用socket连接网站绑定客户端端口问题

佚仙 2012-09-12 12:11:37



package com.yix.ctrl.server;



import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.PrintWriter;

import java.net.InetAddress;

import java.net.InetSocketAddress;

import java.net.Socket;

import java.net.UnknownHostException;







public class RequestKeeper {

	private static final String LOCALHOST = "localhost";

	private static final String BAIDU = "www.baidu.com";

	public static void main(String[] args){

		String postData = "method=keep&type=server";

		postData(postData,BAIDU,80);

	}



	

	public static void postData(String postData,String server,int port){

		try {

			StringBuffer head = new StringBuffer("POST /YControl/index HTTP/1.1\r\n");

			head.append("Host: "+server+"\r\n");

			head.append("Accept: text/html\r\n");

			head.append("Connection: Close\r\n");

			head.append("Content-Length: "+postData.length()+"\r\n");

			head.append("Content-Type: application/x-www-form-urlencoded\r\n");

			head.append("User-Agent: JAVA\r\n");

			head.append("\r\n");

			head.append(postData);

			Socket serverSocket = new Socket();

//只要使用bind立刻报SocketException:Invalid argument or cannot assign requested address

			serverSocket.bind(new InetSocketAddress(InetAddress.getLocalHost(),10101));

			serverSocket.connect(new InetSocketAddress(InetAddress.getByName(server),port));

//			Socket serverSocket = new Socket(server,port,InetAddress.getByName("127.0.0.1"),10101);

//			Socket serverSocket = new Socket(server,port);

			PrintWriter pw = new PrintWriter(serverSocket.getOutputStream());

			BufferedReader reader = new BufferedReader(new InputStreamReader(serverSocket.getInputStream()));

			pw.write(head.toString());

			pw.flush();

			String line = "";

			while((line=reader.readLine())!=null){

				System.out.println(line);

			}

			pw.close();

			reader.close();

			serverSocket.close();

		} catch (UnknownHostException e) {

			e.printStackTrace();

		} catch (IOException e) {

			e.printStackTrace();

		}

	}

	

}