点对点聊天简陋版

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

public class ChatServer
{
    ServerSocket server = null;
    ArrayList<ClientConn> clients = new ArrayList<ClientConn>();
    
    public ChatServer(int port) throws Exception
    {
        server = new ServerSocket(port);
    }
    
    public void startServer() throws Exception
    {
        while(true)
        {
            Socket s = server.accept();
            clients.add( new ClientConn(s) );
        }
    }
    
    class ClientConn implements Runnable
    {
        Socket s = null;
        public ClientConn(Socket s)
        {
            this.s = s;
            (new Thread(this)).start();
        }
        
        public void send(String str) throws IOException
        {
            DataOutputStream dos = new DataOutputStream(s.getOutputStream());
            dos.writeUTF(str);
        }
        
        public void run()
        {
            try {
                
                DataInputStream dis = new DataInputStream(s.getInputStream());
                String str = dis.readUTF();
                while(str != null && str.length() !=0)
                {
                    System.out.println(str);
                    for(Iterator<ClientConn> it = clients.iterator(); it.hasNext(); )
                    {
                        ClientConn cc = (ClientConn)it.next();
                        if(this != cc)    
                        {
                            cc.send(str);
                        }
                    }
                    str = dis.readUTF();
                }
                s.close();
                clients.remove(this);
            } 
            catch (IOException e) 
            {
                System.out.println("client quit");
                try 
                {
                    if(s != null)
                        s.close();
                    clients.remove(this);
                } 
                catch (IOException ioe)
                {
                    ioe.printStackTrace();
                }
            }
            
        }
    }
    
    public static void main(String[] args) throws Exception
    {
        ChatServer cs = new ChatServer(6666); //实例化一个服务器
        cs.startServer();    //启动服务器
    }
}

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

public class ChatClient extends Frame
{
    TextArea ta = new TextArea();
    TextField tf = new TextField();
    public void launchFrame() throws Exception
    {
        this.add(ta, BorderLayout.CENTER);
        this.add(tf, BorderLayout.SOUTH);
        tf.addActionListener(
            new ActionListener() 
            {
                public void actionPerformed(ActionEvent ae)
                {
                    try {
                        String sSend = tf.getText();
                        if(sSend.trim().length() == 0) return;
                        ChatClient.this.send(sSend);
                        tf.setText("");
                        ta.append(sSend + "\n");
                    }
                    catch (Exception e) { e.printStackTrace(); }
                }
            }
            );
        
        setBounds(300,300,300,400);
        setVisible(true);
        tf.requestFocus();
    }
    
    Socket s;
    public ChatClient() throws Exception
    {
        s = new Socket("127.0.0.1", 6666);
        launchFrame();
        (new Thread(new ReceiveThread(s))).start();
    }
    
    public void send(String str) throws Exception
    {
        DataOutputStream dos = new DataOutputStream(s.getOutputStream());
        dos.writeUTF(str);
    }
    
    public void disconnect() throws Exception
    {
        s.close();
    }
    
    public static void main(String[] args) throws Exception
    {
        BufferedReader br = new BufferedReader (
                                new InputStreamReader(System.in));
        ChatClient cc = new ChatClient();
        String str = br.readLine();
        while(str != null && str.length() != 0)
        {
            cc.send(str);
            str = br.readLine();
        }
        cc.disconnect();
    }
    
    class ReceiveThread implements Runnable
    {
        private Socket s;

        public ReceiveThread(Socket s) {
            this.s = s;
        }

        public void run()
        {
            if(s == null) return;
            try {
                DataInputStream dis = new DataInputStream(s.getInputStream());
                String str = dis.readUTF();
                while (str != null && str.length() != 0)
                {
                    ChatClient.this.ta.append(str + "\n");
                    str = dis.readUTF();
                }
            } 
            catch (Exception e)
            {
                e.printStackTrace();
            }
            
        }
    }
}

posted on 2008-09-15 01:30 nonels 阅读(612) 评论(2)  编辑  收藏 所属分类: J2SE

评论

# re: 点对点聊天简陋版 2015-12-21 23:54 更多时候该

来个人更好的更好  回复  更多评论   

# re: 点对点聊天简陋版 2015-12-21 23:55 更多时候该

@更多时候该
543543   回复  更多评论   


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