TCP测试--模拟聊天室

此程序实现了多人聊天功能，运行结果截图如下：

代码：
1.服务器：
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;
import java.util.List;

public class Server {

private List<Channel> allChannel = new ArrayList<Channel>();

public static void main(String[] args) throws IOException {
	new Server().start();
}
//服务器启动
public void start() throws IOException {
	ServerSocket server = new ServerSocket(6597);
	while(true) {
		Socket client = server.accept();
		Channel channel = new Channel(client);
		allChannel.add(channel);
		new Thread(channel).start();
	}
}
//频道
private class Channel implements Runnable {
	private String name;
	private DataInputStream dis;
	private DataOutputStream dos;
	private boolean isRunning = true;
	public Channel(Socket client) {
		try{dis = new DataInputStream(client.getInputStream());
		    dos = new DataOutputStream(client.getOutputStream());
		    send("请输入昵称：");
		    name = dis.readUTF();
		    send("*****欢迎您进入聊天室！*****");
		    sendOthers("*****"+name+"进入了聊天室*****");
		} catch (IOException e) {			
			CloseUtil.closeAll(dos, dis);
			isRunning = false;
		}
	}
	public String receive() {
		String msg = null;
		try {
			msg = dis.readUTF();
		} catch (IOException e) {
			CloseUtil.closeAll(dis);
			isRunning = false;
			allChannel.remove(this);
			sendOthers("*****"+name+"离开了聊天室*****");
		}
		return msg;
	}
	public void send(String msg) {
		if(null==msg) {
			return;
		}
		try {
			dos.writeUTF(msg);
			dos.flush();
		} catch (IOException e) {
			CloseUtil.closeAll(dos);
			isRunning = false;
			allChannel.remove(this);
			sendOthers("*****"+name+"离开了聊天室*****");
		}
	}
	public void sendOthers(String msg) {
		if(null==msg) {
			return;
		}else if(msg.startsWith("****")) {
			for(Channel temp:allChannel) {
				if(this==temp) {
					continue;
				}
				temp.send(msg);
			}
		}else if(msg.startsWith("@")&&msg.indexOf(":")>-1) {
			String name = msg.substring(1, msg.indexOf(":"));
			String content = msg.substring(msg.indexOf(":")+1);
			for(Channel temp:allChannel) {
				if(temp.name.equals(name)&&null!=content) {
					temp.send("来自"+this.name+"的悄悄话:"+content);
				}
			}
		}else {
			for(Channel temp:allChannel) {
				if(this==temp) {
					continue;
				}
				temp.send(name+":"+msg);
			}
		}	
	}
	
	public void run() {
		while(isRunning) {
			String msg = receive();		
			sendOthers(msg);				
		}
	}
}

}
2.客户端
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.Socket;
import java.net.UnknownHostException;
public class Client {

public static class Send implements Runnable {
	private BufferedReader console;
	private DataOutputStream dos;
	private boolean isRunning = true;
	public Send(Socket client) {
		console = new BufferedReader(new InputStreamReader(System.in));
		try {
			dos = new DataOutputStream(client.getOutputStream());
		} catch (IOException e) {
			isRunning = false;
			CloseUtil.closeAll(dos, console);
		}
	}
	
	public void run() {
		while(isRunning) {
			String msg = null;
			try {
				msg = console.readLine();
			} catch (IOException e) {
				msg = null;
			}
			try {			
				if(null!=msg){
					dos.writeUTF(msg);
					dos.flush();
				}
			} catch (IOException e) {
				isRunning = false;
				CloseUtil.closeAll(dos, console);
			}
		}
	}
}

public static class Receive implements Runnable {
	private DataInputStream dis;
	private boolean isRunning = true;
	public Receive(Socket client) {
		try {
			dis = new DataInputStream(client.getInputStream());
		} catch (IOException e) {
			isRunning = false;
			CloseUtil.closeAll(dis);
		} 
	}
	public void run() {
		while(isRunning) {
			String msg = null;
			try {
				msg=dis.readUTF();
			} catch (IOException e) {
				isRunning = false;
				CloseUtil.closeAll(dis);
			}
			System.out.println(msg);
		}
	}
}

public static void main(String[] args) throws UnknownHostException, IOException {
	Socket client = new Socket("mylaptop", 6597);
	new Thread(new Send(client)).start();
	new Thread(new Receive(client)).start();	
}

}
3.工具类
import java.io.Closeable;

public class CloseUtil {
public static void closeAll(Closeable... io) {
for(Closeable temp:io) {
try {
if(null!=temp) {
temp.close();
}
} catch (Exception e) {
System.out.println("关闭流失败");
e.printStackTrace();
}
}
}
}
此程序在裴新老师教学视频下完成