Server.java

package com.yarin.android.Examples_08_05;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class Server
{
	//�������˿�
    private static final int SERVERPORT = 54321; 
    //�ͻ�������
    private static List<Socket> mClientList = new ArrayList<Socket>(); 
    //�̳߳�
    private ExecutorService mExecutorService;  
    //ServerSocket����
    private ServerSocket mServerSocket;  
    //����������
    public static void main(String[] args)
	{
		new Server();
	}
	public Server()
	{
		try
		{
			//���÷������˿�
			mServerSocket = new ServerSocket(SERVERPORT);
			//����һ���̳߳�
			mExecutorService = Executors.newCachedThreadPool();
			System.out.println("start...");
			//������ʱ����ͻ������ӵ�Socket����
			Socket client = null;
			while (true)
			{
				//���տͻ����Ӳ���ӵ�list��
				client = mServerSocket.accept(); 
				mClientList.add(client);
				//����һ���ͻ����߳�
				mExecutorService.execute(new ThreadServer(client));
			}
		}
		catch (IOException e)
		{
			e.printStackTrace();
		}
	}   
    //ÿ���ͻ��˵�������һ���߳�
	static class ThreadServer implements Runnable
	{
		private Socket			mSocket;
		private BufferedReader	mBufferedReader;
		private PrintWriter		mPrintWriter;
		private String			mStrMSG;

		public ThreadServer(Socket socket) throws IOException
		{
			this.mSocket = socket;
			mBufferedReader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
			mStrMSG = "user:"+this.mSocket.getInetAddress()+" come total:" + mClientList.size();
			sendMessage();
		}
		public void run()
		{
			try
			{
				while ((mStrMSG = mBufferedReader.readLine()) != null)
				{
					if (mStrMSG.trim().equals("exit"))
					{
						//��һ���ͻ����˳�ʱ
						mClientList.remove(mSocket);
						mBufferedReader.close();
						mPrintWriter.close();
						mStrMSG = "user:"+this.mSocket.getInetAddress()+" exit total:" + mClientList.size();
						mSocket.close();
						sendMessage();
						break;
					}
					else
					{
						mStrMSG = mSocket.getInetAddress() + ":" + mStrMSG;
						sendMessage();
					}
				}
			}
			catch (IOException e)
			{
				e.printStackTrace();
			}
		}
		//������Ϣ�����пͻ���
		private void sendMessage() throws IOException
		{
			System.out.println(mStrMSG);
			for (Socket client : mClientList)
			{
				mPrintWriter = new PrintWriter(client.getOutputStream(), true);
				mPrintWriter.println(mStrMSG);
			}
		}
	}
}