Java實現的c/s的聊天室

根據馬士兵老師聊天室程式進行最佳化，同時增加聊天者之間的互動。

同時增加服務端會為每一個用戶端增加一個互動視窗，讓伺服器可以和每一個用戶端互動！

服務端代碼

1.import java.net.*;2.import java.util.*;3.import java.io.*;4.import java.awt.*;5.import java.awt.event.*;6.import javax.swing.*;7.8.import javax.swing.JFrame;9.10.public class ChatServer extends JFrame {11.    JTextArea ta = new JTextArea();12.    ServerSocket server = null;13.    Collection cClient = new ArrayList();14.15.    public ChatServer(int port) throws Exception {16.        server = new ServerSocket(port);17.        add(ta, BorderLayout.CENTER);18.        setBounds(200, 200, 300, 450);19.        this.addWindowListener(new WindowAdapter() {20.            public void windowClosing(WindowEvent e) {21.                System.exit(0);22.            }23.        });24.        setVisible(true);25.    }26.27.    public void startServer() throws Exception {28.        while (true) {29.            Socket s = server.accept();30.            cClient.add(new ClientConn(s));31.            ta.append(s.getInetAddress().getHostName() + "進入" + "    " + "連接埠號碼"32.                    + s.getPort());33.            ta.append("\n" + "當前在前總人數： " + cClient.size() + "\n\n");34.        }35.    }36.37.    class ClientConn extends Frame implements Runnable, ActionListener {38.        TextArea ta1 = null;39.        TextArea ta2 = null;40.        Button btn = null;41.        Socket s = null;42.43.        public ClientConn(Socket s) {44.            ta1 = new TextArea(3, 30);45.            ta2 = new TextArea(2, 15);46.            btn = new Button("發送");47.            this.setLayout(new BorderLayout());48.            this.add(ta1, BorderLayout.CENTER);49.            this.add(ta2, BorderLayout.SOUTH);50.            this.add(btn, BorderLayout.EAST);51.            this.setSize(300, 200);52.            this.setVisible(true);53.            this.setTitle("" + s.getInetAddress().getHostName() + "連接埠"54.                    + s.getPort());55.            this.s = s;56.            (new Thread(this)).start();57.            btn.addActionListener(this);58.        }59.60.        public void actionPerformed(ActionEvent e) {61.            try {62.                DataOutputStream dos = new DataOutputStream(s.getOutputStream());63.                dos.writeUTF("伺服器:\n" + ta2.getText() + "\n");64.                ta1.append("伺服器:\n" + ta2.getText() + "\n");65.                ta2.setText("");66.            } catch (IOException E) {67.68.            }69.        }70.71.        public void send(String str, String st) throws IOException {72.            DataOutputStream dos = new DataOutputStream(s.getOutputStream());73.            dos.writeUTF(st + "說:\n" + str);74.        }75.76.        public void dispose() {77.            try {78.                // this.setVisible(false);79.                super.dispose();80.                ta.append(s.getInetAddress().getHostName() + "退出" + "\n");81.                if (s != null)82.                    s.close();83.                cClient.remove(this);84.                ta.append("當前線上人數: " + cClient.size() + "\n\n");85.            } catch (Exception e) {86.                e.printStackTrace();87.            }88.        }89.90.        public void run() {91.            try {92.93.                DataInputStream dis = new DataInputStream(s.getInputStream());94.                String str = dis.readUTF();95.                String st = s.getInetAddress().getHostName();96.                while (str != null && str.length() != 0) {97.                    for (Iterator it = cClient.iterator(); it.hasNext();) {98.                        ClientConn cc = (ClientConn) it.next();99.                        if (this != cc) {100.                            cc.send(str, st);101.                        }102.                    }103.                    ta1.append(st + "說:\n" + str + "\n");104.                    str = dis.readUTF();105.                }106.                this.dispose();107.            } catch (Exception e) {108.                this.dispose();109.            }110.111.        }112.    }113.114.    public static void main(String[] args) throws Exception {115.        JFrame.setDefaultLookAndFeelDecorated(true);116.        ChatServer cs = new ChatServer(8888);117.        cs.startServer();118.    }119.}