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		很久以前寫的程序，搬過來做個備忘：
    
服務器端代碼：
    

      1package com.test.talk;
    
      2
    
      3import java.awt.BorderLayout;
    
      4import java.awt.FlowLayout;
    
      5import java.awt.event.ActionEvent;
    
      6import java.awt.event.ActionListener;
    
      7import java.awt.event.WindowAdapter;
    
      8import java.awt.event.WindowEvent;
    
      9import java.io.DataInputStream;
    
     10import java.io.DataOutputStream;
    
     11import java.io.IOException;
    
     12import java.net.BindException;
    
     13import java.net.ServerSocket;
    
     14import java.net.Socket;
    
     15import java.util.LinkedList;
    
     16import java.util.List;
    
     17
    
     18import javax.swing.JButton;
    
     19import javax.swing.JFrame;
    
     20import javax.swing.JLabel;
    
     21import javax.swing.JPanel;
    
     22import javax.swing.JTextField;
    
     23
    
     24public class Server extends JFrame
    
     25{
    
     26    boolean started = false;
    
     27
    
     28    private ServerSocket ss = null;
    
     29
    
     30    private List clientList = new LinkedList();
    
     31
    
     32    private JLabel portLbl = null;
    
     33
    
     34    private JTextField portTxt = null;
    
     35
    
     36    private JButton portSetBtn = null;
    
     37
    
     38    private String port = null;
    
     39
    
     40    private JButton startBtn = null;
    
     41
    
     42    private JButton stopBtn = null;
    
     43
    
     44    private JPanel mainPanle = null;
    
     45
    
     46    private JPanel headPanle = null;
    
     47
    
     48    public static void main(String[] args)
    
     49    {
    
     50        new Server();
    
     51    }
    
     52
    
     53    public Server()
    
     54    {
    
     55        headPanle = new JPanel(new FlowLayout(FlowLayout.LEFT));
    
     56        portLbl = new JLabel("PORT");
    
     57        portTxt = new JTextField(7);
    
     58        portSetBtn = new JButton("OK");
    
     59        portSetBtn.addActionListener(new ActionListener()
    
     60        {
    
     61            public void actionPerformed(ActionEvent e)
    
     62            {
    
     63                if (portTxt.getText().matches("\\d+"))
    
     64                {
    
     65                    port = portTxt.getText();
    
     66                    startBtn.setEnabled(true);
    
     67                    stopBtn.setEnabled(true);
    
     68                }
    
     69                else
    
     70                {
    
     71                    javax.swing.JOptionPane.showMessageDialog(null, "port be inputted is illegal");
    
     72                }
    
     73            }
    
     74        }    );
    
     75        headPanle.add(portLbl);
    
     76        headPanle.add(portTxt);
    
     77        headPanle.add(portSetBtn);
    
     78        getContentPane().add(headPanle, BorderLayout.NORTH);
    
     79        startBtn = new JButton("Start");
    
     80        stopBtn = new JButton("Stop");
    
     81        startBtn.setEnabled(false);
    
     82        stopBtn.setEnabled(false);
    
     83        mainPanle = new JPanel(new FlowLayout(FlowLayout.CENTER));
    
     84        startBtn.addActionListener(new StartClickListener());
    
     85
    
     86        stopBtn.addActionListener(new ActionListener()
    
     87        {
    
     88            public void actionPerformed(ActionEvent e)
    
     89            {
    
     90                started = false;
    
     91                clientList.clear();
    
     92                try
    
     93                {
    
     94                    if (ss != null)
    
     95                    {
    
     96                        ss.close();
    
     97                    }
    
     98                }
    
     99                catch(IOException e1)
    
    100                {
    
    101                    e1.printStackTrace();
    
    102                }
    
    103            }
    
    104        }    );
    
    105        mainPanle.add(startBtn);
    
    106        mainPanle.add(stopBtn);
    
    107        getContentPane().add(mainPanle, BorderLayout.CENTER);
    
    108
    
    109        addWindowListener(new WindowAdapter()
    
    110        {
    
    111            public void windowClosing(WindowEvent e)
    
    112            {
    
    113                started = false;
    
    114                clientList.clear();
    
    115                try
    
    116                {
    
    117                    if (ss != null)
    
    118                    {
    
    119                        ss.close();
    
    120                    }
    
    121                }
    
    122                catch(IOException e1)
    
    123                {
    
    124                    e1.printStackTrace();
    
    125                }
    
    126                System.exit(0);
    
    127            }
    
    128        }    );
    
    129
    
    130        this.setSize(300, 300);
    
    131        setLocation(100, 100);
    
    132        pack();
    
    133        setVisible(true);
    
    134    }
    
    135
    
    136    private void start()
    
    137    {
    
    138        try
    
    139        {
    
    140            ss = new ServerSocket(Integer.parseInt(port));
    
    141            started = true;
    
    142        }
    
    143        catch(BindException be)
    
    144        {
    
    145            javax.swing.JOptionPane.showMessageDialog(null, "port is useing by others");
    
    146        }
    
    147        catch(IOException e)
    
    148        {
    
    149            javax.swing.JOptionPane.showMessageDialog(null, "connect server fail");
    
    150        }
    
    151        try
    
    152        {
    
    153            while(started)
    
    154            {
    
    155                Socket s = ss.accept();
    
    156                ClientImpl cr = new ClientImpl(s);
    
    157                new Thread(cr).start();
    
    158                clientList.add(cr);
    
    159                System.out.println("System Info：" + s.getInetAddress() + "connect successfully");
    
    160            }
    
    161        }
    
    162        catch(IOException e)
    
    163        {
    
    164            System.out.println("Client closed!");
    
    165        }
    
    166    }
    
    167
    
    168    class ClientImpl implements Runnable
    
    169    {
    
    170        private Socket s;
    
    171
    
    172        private DataInputStream dis = null;
    
    173
    
    174        private DataOutputStream dos = null;
    
    175
    
    176        boolean bConnect = false;
    
    177
    
    178        public ClientImpl(Socket s)
    
    179        {
    
    180            this.s = s;
    
    181            try
    
    182            {
    
    183                dis = new DataInputStream(s.getInputStream());
    
    184                dos = new DataOutputStream(s.getOutputStream());
    
    185                bConnect = true;
    
    186            }
    
    187            catch(IOException e)
    
    188            {
    
    189                e.printStackTrace();
    
    190            }
    
    191        }
    
    192
    
    193        private void send(String str)
    
    194        {
    
    195            try
    
    196            {
    
    197                dos.writeUTF(str);
    
    198            }
    
    199            catch(IOException e)
    
    200            {
    
    201                e.printStackTrace();
    
    202            }
    
    203
    
    204        }
    
    205
    
    206        public void run()
    
    207        {
    
    208            ClientImpl cr = null;
    
    209            try
    
    210            {
    
    211                while(bConnect)
    
    212                {
    
    213                    String str = dis.readUTF();
    
    214                    System.out.println(str);
    
    215                    for(int i = 0; i < clientList.size(); i++)
    
    216                    {
    
    217                        cr = (ClientImpl) clientList.get(i);
    
    218                        cr.send(str);
    
    219                    }
    
    220                }
    
    221            }
    
    222            catch(Exception e)
    
    223            {
    
    224                clientList.remove(cr);
    
    225                System.out.println(s.getInetAddress() + "has leaved");
    
    226            }
    
    227            finally
    
    228            {
    
    229                try
    
    230                {
    
    231                    if (dis != null)
    
    232                        dis.close();
    
    233                    if (dos != null)
    
    234                        dos.close();
    
    235                    if (s != null)
    
    236                    {
    
    237                        s.close();
    
    238                        s = null;
    
    239                    }
    
    240                }
    
    241                catch(IOException io)
    
    242                {
    
    243                    io.printStackTrace();
    
    244                }
    
    245            }
    
    246        }
    
    247    }
    
    248
    
    249    class StartClickListener implements Runnable, ActionListener
    
    250    {
    
    251        public void actionPerformed(ActionEvent e)
    
    252        {
    
    253            new Thread(this).start();
    
    254        }
    
    255
    
    256        public void run()
    
    257        {
    
    258            start();
    
    259        }
    
    260    }
    
    261}
    
    262
    

    

    
客戶端代碼：
    

      1package com.test.talk;
    
      2
    
      3import java.awt.BorderLayout;
    
      4import java.awt.FlowLayout;
    
      5import java.awt.event.ActionEvent;
    
      6import java.awt.event.ActionListener;
    
      7import java.awt.event.WindowAdapter;
    
      8import java.awt.event.WindowEvent;
    
      9import java.io.DataInputStream;
    
     10import java.io.DataOutputStream;
    
     11import java.io.IOException;
    
     12import java.net.Socket;
    
     13import java.net.UnknownHostException;
    
     14
    
     15import javax.swing.JButton;
    
     16import javax.swing.JFrame;
    
     17import javax.swing.JLabel;
    
     18import javax.swing.JPanel;
    
     19import javax.swing.JTextArea;
    
     20import javax.swing.JTextField;
    
     21
    
     22/**
    
     23 * Client
    
     24 * 
    
     25 * @author hx0272
    
     26 * 
    
     27 */
    
     28public class Client
    
     29{
    
     30    public static void main(String[] args)
    
     31    {
    
     32        ClientFrame frame = new ClientFrame();
    
     33    }
    
     34}
    
     35
    
     36class ClientFrame extends JFrame
    
     37{
    
     38    private JPanel mainPanel;
    
     39
    
     40    private JPanel headPanel;
    
     41
    
     42    private JPanel footPanel;
    
     43
    
     44    private JTextArea showArea;
    
     45
    
     46    private JTextField inputTxt;
    
     47
    
     48    private JLabel portLbl;
    
     49
    
     50    private JLabel ipLbl;
    
     51
    
     52    private JLabel nameLbl;
    
     53
    
     54    private JTextField portTxt;
    
     55
    
     56    private JTextField ipTxt;
    
     57
    
     58    private JTextField nameTxt;
    
     59
    
     60    private JButton submitBtn;
    
     61
    
     62    private JButton nameBtn;
    
     63
    
     64    private JButton loginBtn;
    
     65
    
     66    private Socket clientSocket = null;
    
     67
    
     68    private DataOutputStream dos = null;
    
     69
    
     70    private DataInputStream dis = null;
    
     71
    
     72    private boolean bConnect = false;
    
     73
    
     74    private String name = "";
    
     75
    
     76    public ClientFrame()
    
     77    {
    
     78        init();
    
     79    }
    
     80
    
     81    private void init()
    
     82    {
    
     83        //main panel Begin
    
     84        mainPanel = new JPanel();
    
     85        showArea = new JTextArea(15, 80);
    
     86        showArea.setEditable(false);
    
     87        mainPanel.add(showArea);
    
     88        getContentPane().add(mainPanel, BorderLayout.CENTER);
    
     89        //main panel End
    
     90
    
     91        //head panel Begin
    
     92        headPanel = new JPanel(new FlowLayout(FlowLayout.LEFT));
    
     93        portLbl = new JLabel("PORT");
    
     94        portTxt = new JTextField(7);
    
     95        ipLbl = new JLabel("IP");
    
     96        ipTxt = new JTextField(25);
    
     97
    
     98        nameLbl = new JLabel("name");
    
     99
    
    100        nameTxt = new JTextField(15);
    
    101
    
    102        nameBtn = new JButton("OK");
    
    103
    
    104        loginBtn = new JButton("login");
    
    105        nameBtn.addActionListener(new ActionListener()
    
    106        {
    
    107            public void actionPerformed(ActionEvent e)
    
    108            {
    
    109                String tmp = nameTxt.getText();
    
    110                if (tmp != null || !tmp.equals(""))
    
    111                {
    
    112                    int id = javax.swing.JOptionPane.showConfirmDialog(null, "yes or no", "choose yes",
    
    113                            javax.swing.JOptionPane.OK_OPTION);
    
    114                    if (id == 0)
    
    115                    {
    
    116                        name = nameTxt.getText();
    
    117                        loginBtn.setEnabled(true);
    
    118                        nameBtn.setEnabled(false);
    
    119                    }
    
    120                }
    
    121            }
    
    122        }    );
    
    123        headPanel.add(portLbl);
    
    124        headPanel.add(portTxt);
    
    125        headPanel.add(ipLbl);
    
    126        headPanel.add(ipTxt);
    
    127
    
    128        headPanel.add(loginBtn);
    
    129        headPanel.add(nameLbl);
    
    130        headPanel.add(nameTxt);
    
    131        headPanel.add(nameBtn);
    
    132        loginBtn.setEnabled(false);
    
    133        loginBtn.addActionListener(new ButtonClickAction());
    
    134        getContentPane().add(headPanel, BorderLayout.NORTH);
    
    135        //head panel End
    
    136
    
    137        //foot panel Begin
    
    138        footPanel = new JPanel(new FlowLayout(FlowLayout.LEFT));
    
    139        inputTxt = new JTextField(70);
    
    140        submitBtn = new JButton("submit");
    
    141
    
    142        footPanel.add(inputTxt);
    
    143        footPanel.add(submitBtn);
    
    144
    
    145        submitBtn.addActionListener(new ButtonClickAction());
    
    146        submitBtn.setEnabled(false);
    
    147        getContentPane().add(footPanel, BorderLayout.SOUTH);
    
    148        //foot panel End
    
    149
    
    150        addWindowListener(new WindowAdapter()
    
    151        {
    
    152            public void windowClosing(WindowEvent e)
    
    153            {
    
    154                disConnect();
    
    155                System.exit(0);
    
    156            }
    
    157        }    );
    
    158
    
    159        this.setSize(300, 300);
    
    160        setLocation(100, 100);
    
    161        pack();
    
    162        setVisible(true);
    
    163    }
    
    164
    
    165    /**
    
    166     * login button / submit button action listener
    
    167     * 
    
    168     * @author hx0272
    
    169     * 
    
    170     */
    
    171    class ButtonClickAction implements ActionListener
    
    172    {
    
    173        public void actionPerformed(ActionEvent e)
    
    174        {
    
    175            if ("submit".equals(e.getActionCommand()))
    
    176            {
    
    177                String str = inputTxt.getText().trim();
    
    178                inputTxt.setText("");
    
    179                sendToServer(str);
    
    180            }
    
    181            else if ("login".equals(e.getActionCommand()))
    
    182            {
    
    183                connect();
    
    184            }
    
    185        }
    
    186    }
    
    187
    
    188    /**
    
    189     * enter be inputted event
    
    190     * 
    
    191     * @author hx0272
    
    192     */
    
    193    class EnterClickAction implements ActionListener
    
    194    {
    
    195        public void actionPerformed(ActionEvent e)
    
    196        {
    
    197            String str = inputTxt.getText().trim();
    
    198            inputTxt.setText("");
    
    199            sendToServer(str);
    
    200        }
    
    201    }
    
    202
    
    203    /**
    
    204     * send message to server
    
    205     * 
    
    206     * @author hx0272
    
    207     */
    
    208    private void sendToServer(String str)
    
    209    {
    
    210        try
    
    211        {
    
    212            dos.writeUTF(name + ":" + str);
    
    213            dos.flush();
    
    214        }
    
    215        catch(IOException e)
    
    216        {
    
    217            e.printStackTrace();
    
    218        }
    
    219    }
    
    220
    
    221    /**
    
    222     * close resource
    
    223     * 
    
    224     * @author hx0272
    
    225     */
    
    226    private void disConnect()
    
    227    {
    
    228        try
    
    229        {
    
    230            // clientSocket.close();
    
    231            //          
    
    232            // dos.close();
    
    233
    
    234            bConnect = false;
    
    235        }
    
    236        catch(Exception e)
    
    237        {
    
    238            e.printStackTrace();
    
    239        }
    
    240    }
    
    241
    
    242    /**
    
    243     * receive message from server
    
    244     * 
    
    245     * @author hx0272
    
    246     */
    
    247    private class Receive implements Runnable
    
    248    {
    
    249        public void run()
    
    250        {
    
    251            try
    
    252            {
    
    253                while(bConnect)
    
    254                {
    
    255                    String str = dis.readUTF();
    
    256                    showArea.setText(showArea.getText() + str + '\n');
    
    257                }
    
    258            }
    
    259            catch(IOException e)
    
    260            {
    
    261                javax.swing.JOptionPane.showMessageDialog(null, "connect server error");
    
    262            }
    
    263
    
    264        }
    
    265    }
    
    266
    
    267    /**
    
    268     * connection begin
    
    269     * 
    
    270     * @author hx0272
    
    271     */
    
    272    private void connect()
    
    273    {
    
    274        try
    
    275        {
    
    276            if (ipTxt.getText().matches("\\d{1,3}.\\d{1,3}.\\d{1,3}.\\d{1,3}") && portTxt.getText().matches("\\d+"))
    
    277            {
    
    278                clientSocket = new Socket(ipTxt.getText(), Integer.parseInt(portTxt.getText()));
    
    279                dos = new DataOutputStream(clientSocket.getOutputStream());
    
    280                dis = new DataInputStream(clientSocket.getInputStream());
    
    281                bConnect = true;
    
    282                new Thread(new Receive()).start();
    
    283                System.out.println("I am coming");
    
    284                javax.swing.JOptionPane.showMessageDialog(null, "connect server success");
    
    285                submitBtn.setEnabled(true);
    
    286                inputTxt.addActionListener(new EnterClickAction());
    
    287            }
    
    288            else
    
    289            {
    
    290                javax.swing.JOptionPane.showMessageDialog(null, "port or ip be inputted is illegal");
    
    291            }
    
    292        }
    
    293        catch(UnknownHostException uhe)
    
    294        {
    
    295            javax.swing.JOptionPane.showMessageDialog(null, "connect server error");
    
    296        }
    
    297        catch(IOException e)
    
    298        {
    
    299            javax.swing.JOptionPane.showMessageDialog(null, "connect server error");
    
    300        }
    
    301    }
    
    302}
    
    303
    

    

    
使用說明：
    
1.先運行服務器端程序，設定好端口號
    
2.點擊Start按鈕，運行服務器
    
3.運行客戶端程序
    
4.設定好昵稱
    
5.設定與服務器端匹配的端口號和服務器的ip地址
    
6.點擊Login按鈕，登錄到聊天系統
    
7.可以聊天了。 
    

    

    
----2008年11月24日
  
	
    
	
	
    
		posted on 2010-09-01 10:40 李 明 閱讀(880) 評論(0)  編輯  收藏  所屬分類: J2SE 、Java 
	
    

    







    
	    
    




    








    

				

    




    







    
        
	



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