java通信二：利用Socket實現聊天室功能

最近研究了下java socket通信基礎，利用代碼實現了一個簡單的多人聊天室功能，現把代碼共享下，希望能幫到有興趣瞭解的人。

目錄結構：

ChatClient:

package com.panda.chat;

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.net.*;

@SuppressWarnings("serial")
public class ChatClient extends Frame {
	private TextArea ta = new TextArea();
	private TextField tf = new TextField();
	private DataOutputStream dos = null;
	private DataInputStream dis = null;
	private Socket socket = null;
	private boolean bConnected = false;
	private Thread thread=null;
	public static void main(String[] args) {
		new ChatClient().frameClient();
	}
	public void frameClient(){
		setSize(400, 400);
		setLocation(400,300);
		add(ta,BorderLayout.NORTH);
		add(tf,BorderLayout.SOUTH);
		pack();
		tf.addActionListener(new TfListener());
		//關閉窗口事件監聽
		this.addWindowListener(new WindowAdapter() {
			@Override
			public void windowClosing(WindowEvent e) {
				disconnected();
				System.exit(0);
			}
		});
		this.connect();
		setVisible(true);
	}
	//鏈接服務器地址
	private void connect(){
		try {
			socket = new Socket("127.0.0.1", 8888);
			thread=new Thread(new ChatThread());
			thread.start();
			dos = new DataOutputStream(socket.getOutputStream());
			dis = new DataInputStream(socket.getInputStream());
		} catch (UnknownHostException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	//斷開連接
	private void disconnected(){
		bConnected = false;
		try {
			dos.close();
			dis.close();
			socket.close();
		} catch (IOException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		}
	}
	//鍵盤迴車事件
	private class TfListener implements ActionListener{

		@Override
		public void actionPerformed(ActionEvent e) {
			String strMsg = tf.getText();
			tf.setText("");
			try {
				dos.writeUTF(strMsg);
				dos.flush();
			} catch (IOException e1) {
				// TODO Auto-generated catch block
				e1.printStackTrace();
			}
		}
		
	}
	//開啓線程接受服務器信息
	private class ChatThread implements Runnable{
		@Override
		public void run() {
			try {
				bConnected = true;
				while(bConnected){
					String msg = dis.readUTF();
					String taText = ta.getText();
					ta.setText(taText+msg+"\n");
				}
			} catch (SocketException e) {
				System.out.println("退出");;
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}
}

ChatServer:

package com.panda.chat;

import java.io.*;
import java.net.*;
import java.util.*;

public class ChatServer {
	private boolean started = false;
	private List<ChatThread> chatThreads = new ArrayList<ChatThread>();
	public static void main(String[] args) {
		new ChatServer().startServer();
	}
	private void startServer(){
		try {
			//開啓服務端Socket
			ServerSocket seso = new ServerSocket(8888);
			started = true;
			while(started){
				//接受客戶端連接請求
				Socket sos = seso.accept();
				System.out.println("一個客戶端已連接");
				//開啓線程處理客戶端通信
				ChatThread ct = new ChatThread(sos);
				chatThreads.add(ct);
				new Thread(ct).start();
			}
		} catch (IOException e) {
			e.printStackTrace();
		} 
	}
	private class ChatThread implements Runnable{
		private Socket socket;
		private DataInputStream din=null;
		private DataOutputStream don=null;
		private boolean bConnected = false;
		public ChatThread(Socket socket) {
			super();
			this.socket = socket;
		}
		//發送信息的函數
		private void send(String strMsgIn){
			try{
				don.writeUTF(strMsgIn);
				don.flush();
			}catch(IOException e){
				e.printStackTrace();
			}
		}
		@Override
		public void run() {
			try{
				din = new DataInputStream(socket.getInputStream());
				don = new DataOutputStream(socket.getOutputStream());
				//讀取數據
				bConnected = true;
				while(bConnected){
					String strMsgIn = din.readUTF();
					System.out.println(strMsgIn);
					//接收到數據後發送給每個客戶端
					for(int i =0;i<chatThreads.size();i++){
						chatThreads.get(i).send(strMsgIn);
					}
				}
			}catch (IOException e) {
				try {
					//如果客戶端出錯或關閉，直接關閉連接，並移除List中的當前線程
					socket.close();
					chatThreads.remove(this);
				} catch (IOException e1) {
					// TODO Auto-generated catch block
					e1.printStackTrace();
				}
			} finally{
				try {
					din.close();
					don.close();
					socket.close();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
		}
	
	}
}

運行ChatSever後，再同時打開多次ChatClient，就可以實現多人聊天了，你也試試。