基于tcpip的java简单聊天程序.txt

Java编写的基于Socket的聊天室程序

/*Copyright 2005
 *make by cat lee
 *基于TCP/IP的简单聊天程序
 *使用方法:先启动Server端.然后再启动Client端.
 *程序有很多错误,做得很马虎,本来想把发送文件加上去的.但又要做网络版坦克小战了
 *我在JAVA中做不出好像QQ那样的发送消息热键,本来打算用keylistener监听F8键来发消息的
 *但不知道为什么不行..郁闷.
 *至于界面,本来想用 IFrame做得漂亮点的,但想想程序这么烂,界面花巧有什么用...还是算了
 *IDE我是用JC3.10,不支持中文.所以注释用英文,有兴趣看本烂程序的将就一下吧.^_^
 */
import java.io.*;
import java.net.*;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.event.*;

public class NetWork extends JFrame 
{
 
 JRadioButton rButton[] = new JRadioButton[2];
 JTextField State,cHost,SMSField;
 JButton Connect,DisConnect,SendMsg,SendFile;
 JTextArea MessageTextArea;
 ServerSocket sSocket;
 Socket InSocket, cSocket;
 BufferedReader bufReader;
 PrintWriter pWriter;
 String InStr;
 int type = JOptionPane.ERROR_MESSAGE;
 String title = "Error Message";
 String ErrorMsg = "Error";
 Container c = new Container();
 NetWork_Client Client;
 NetWork_Server Server;
 
 public NetWork()
 {//
  super("TCP Communicate");
  //Layout
  
  c.setLayout(null);
  setSize(500 , 480);
  getContentPane().add(c);
 
  MessageTextArea = new JTextArea();
        MessageTextArea.setBounds(100 , 130 , 200 , 200);
        MessageTextArea.setLineWrap(true);
        
        c.add(MessageTextArea);
        //c.add(new JScrollPane(MessageTextArea));
        //the exit event
        this.addWindowListener(new WindowAdapter()
         {
          public void windowClosing(WindowEvent ClosingWin)
          {
           System.exit(0);
          }
         });
        
        
  //interphase
  String bStr[] = {"Server", "Client"};
  ButtonGroup bGroup = new ButtonGroup();
  for(int i= 0;i<2;i++)
            {
             rButton[i] = new JRadioButton(bStr[i]);
             rButton[i].setBounds(10+i*80 , 30 , 80 , 20);
             bGroup.add(rButton[i]);
             c.add(rButton[i]);
            }
        rButton[0].setSelected(true);
        
        JLabel ConnectState = new JLabel("ConnectState :");
        ConnectState.setBounds(200 , 30 , 100 , 20 );
        c.add(ConnectState);
        State = new JTextField();
        State.setBounds(320, 30 , 150 , 20);
        c.add(State);
        
        JLabel ConnectHost = new JLabel("ConnectHost IP");
        ConnectHost.setBounds(10 , 80 , 100 , 20);
        c.add(ConnectHost);
        cHost = new JTextField();
        cHost.setBounds(100 , 80 , 200 , 20);
        c.add(cHost);
        Connect = new JButton("Connect");
        Connect.setBounds(320 , 80 , 100 , 20);
        c.add(Connect);
        Connect.addActionListener(new ActionListener()
        {//the event of the connect button
         public void actionPerformed(ActionEvent e)
         {
          try
          {
           if(rButton[0].isSelected() == true)
           {//start up the Server Thread
            InStr = "";
            SMSField.setText("");
            Server.start();
           }
           else
           {//start up the Client thread
            InStr = "";
            SMSField.setText("");
            Client.start();
           }
          } 
          catch(Exception Ex)
          {
           return;
          }
          finally
          {
           
           DisConnect.setEnabled(true);
           SendMsg.setEnabled(true);
           Connect.setEnabled(false);
           
          }
         }
        });
        
        JLabel ReceInfo = new JLabel("Information ");
        ReceInfo.setBounds(10 , 130 , 100 , 20);
        c.add(ReceInfo);
        
        DisConnect = new JButton("DisConnect");
        DisConnect.setBounds(320 , 130 , 100 , 20);
        c.add(DisConnect);
        DisConnect.addActionListener(new ActionListener()
        {
         public void actionPerformed(ActionEvent e)
         {//the event of the disconnect button
             //close the server or client
          try
          { 
           if(rButton[0].isSelected() == true)
           {//close the server
            InSocket.close();
            
           }
           else
           {//close the client
            cSocket.close();
           }
          }
          catch(Exception Ex)
          {
           return;
          }
          finally
          {
           State.setText("Closed...");
           DisConnect.setEnabled(false);
           SendMsg.setEnabled(false);
           Connect.setEnabled(true);
          
          }
         }
        });
        
        SMSField = new JTextField();
        SMSField.setBounds(100 , 350 , 200 , 20);
        SMSField.setToolTipText("Enter your message here");
        c.add(SMSField);
        // send message
        SendMsg = new JButton("Send");
        SendMsg.setBounds(320,350 , 100 , 20);
        SendMsg.addKeyListener(new KeyListener()
        {
            public void keyPressed(KeyEvent e)
         {

         }
         public void keyTyped(KeyEvent e)
         {
             int key = e.getKeyCode();
          if(key == 119)
          {
           try
           {
            pWriter.write(SMSField.getText());
            pWriter.write("\n");
            pWriter.flush();
            SMSField.setText("");
           }
           catch(NullPointerException NpEx)
           {
            return;
           }
          }
         }
         public void keyReleased(KeyEvent e)
         {
          
         }
        });
        
        
        SendMsg.addActionListener(new ActionListener()
        {
         public void actionPerformed(ActionEvent e)
         {
          try
          {
              pWriter.write(SMSField.getText());
              pWriter.write("\n");
           pWriter.flush();
           if(rButton[0].isSelected() == true)
           {
            MessageTextArea.setText("(Server) :"+SMSField.getText());
           }
           else
           {
            MessageTextArea.setText("(Client) :"+SMSField.getText());
           }
           
           SMSField.setText("");
           
          }
          catch(NullPointerException NpEx)
          {
           return;
          }

         }
        });
        c.add(SendMsg);
        
        //send file
        /*
        SendFile = new JButton("Send File");
        SendFile.setBounds(320 , 300 , 100,20);
        SendFile.addActionListener(new ActionListener()
        {
         public void actionPerformed(ActionEvent e)
         {
          JFileChooser FileCh = new JFileChooser();
             FileCh.setDialogTitle("Open File");
             FileCh.setApproveButtonText("Open");
             FileCh.showOpenDialog(c);
             File FileName = FileCh.getSelectedFile();
             FileReader FRead = null;
             FileInputStream Input = null;
             try
             {
              
              Input = new FileInputStream(FileName);
             }

             
         }
        });
        c.add(SendFile);
        */
        JLabel about = new JLabel("Make by cat lee");
        about.setBounds(50 , 400 , 100 , 20);
        c.add(about);
        //set up the server and client thread
        Client = new NetWork_Client();
        Server = new NetWork_Server();
    
    }
    //The Server Thread
     class NetWork_Server extends Thread
    {
     public NetWork_Server()
     {
     }
     public void run()
     {
      try
      { 
       Connect.setEnabled(true);
       State.setText("Waiting for Connect");
       cHost.setText(InetAddress.getLocalHost().getHostAddress());
       sSocket = new ServerSocket(1984);
       InSocket = sSocket.accept();
       bufReader = new BufferedReader(new InputStreamReader(InSocket.getInputStream()));
       pWriter = new PrintWriter(InSocket.getOutputStream() , true);
        
       
       while(true)
       {
        if(sSocket.isBound() == true)
        {//makesure is bound
         State.setText("Connecting");
         DisConnect.setEnabled(true);
         Connect.setEnabled(false);
         SendMsg.setEnabled(true);
         break;
        }
       
       }
       while(true)
       {
        InStr = bufReader.readLine();
        if(InStr.length() >0 )
        {
         MessageTextArea.setText("(Client) :");
         MessageTextArea.append(InStr);
         MessageTextArea.append("\n");
        }
        
       }
      }
      catch(Exception Ex)
      {
       
       if(sSocket.isBound() == false)
       {
        ErrorMsg = "Disconnected";
        
        State.setText("Closed...");
        DisConnect.setEnabled(false);
        Connect.setEnabled(true);
        //InSocket.close();
        JOptionPane.showMessageDialog(c , ErrorMsg,title,type);
       }
       return;
      }
      }
    }
//The Client Thread
    class NetWork_Client extends Thread
    {
     public NetWork_Client()
     {
      
     }
     public void run()
     {
      try
      {
          Connect.setEnabled(false);
       State.setText("Waiting for Connect");
       cSocket = new Socket();
       cSocket.connect(new InetSocketAddress(cHost.getText() , 1984) ,1985 );
       bufReader = new BufferedReader(new InputStreamReader(cSocket.getInputStream()));
       pWriter = new PrintWriter(cSocket.getOutputStream() , true);
       while(true)
       {//makesure is connected
        if(cSocket.isConnected() == true)
        {
         State.setText("Connecting");
         DisConnect.setEnabled(true);
         Connect.setEnabled(false);
         SendMsg.setEnabled(true);
         break;
        } 
       }
       InStr = "";
       while(true)
       {
        InStr = bufReader.readLine();
        if(InStr.length() > 0)
        {
         MessageTextArea.setText("(Server) :");
         MessageTextArea.append(InStr);
         MessageTextArea.append("\n");
        }
       }
      }
      catch(Exception Ex)
      {
       ErrorMsg = "Disconnected";
       JOptionPane.showMessageDialog(c , ErrorMsg,title,type);
       return;
      }
     }
    }
    
    
    public static void main(String args[])
    {
        NetWork nw = new NetWork();
        nw.setVisible(true);
        nw.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        nw.setResizable(false);   
    }  
}