mainframe.java

局域网内实现的五子棋和简单的聊天工具。

package udpclient;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.net.*;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2005</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

public class MainFrame extends JFrame {
  DatagramSocket socket;
  byte[] buf=new byte[1000];
  DatagramPacket dp=new DatagramPacket(buf,buf.length);
  InetAddress serverHost;
  int serverPort;


  JPanel contentPane;
  JLabel jLabel1 = new JLabel();
  JLabel jLabel2 = new JLabel();
  JTextField jTextField1 = new JTextField();
  JTextField jTextField2 = new JTextField();
  JButton jButton1 = new JButton();
  JButton jButton2 = new JButton();
  JTextField jTextField3 = new JTextField();
  JScrollPane jScrollPane1 = new JScrollPane();
  JTextArea jTextArea1 = new JTextArea();

  //Construct the frame
  public MainFrame() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  //Component initialization
  private void jbInit() throws Exception  {
    contentPane = (JPanel) this.getContentPane();
    jLabel1.setFont(new java.awt.Font("Dialog", 0, 14));
    jLabel1.setText("服务器IP");
    jLabel1.setBounds(new Rectangle(14, 17, 72, 26));
    contentPane.setLayout(null);
    this.setSize(new Dimension(405, 300));
    this.setTitle("UDP-客户端");
    jLabel2.setBounds(new Rectangle(185, 17, 41, 26));
    jLabel2.setText("端口");
    jLabel2.setFont(new java.awt.Font("Dialog", 0, 14));
    jTextField1.setFont(new java.awt.Font("Dialog", 0, 14));
    jTextField1.setText("127.0.0.1");
    jTextField1.setBounds(new Rectangle(73, 17, 100, 26));
    jTextField2.setBounds(new Rectangle(220, 17, 49, 26));
    jTextField2.setText("6544");
    jTextField2.setFont(new java.awt.Font("Dialog", 0, 14));
    jButton1.setBounds(new Rectangle(280, 17, 106, 26));
    jButton1.setFont(new java.awt.Font("Dialog", 0, 14));
    jButton1.setText("连接服务器");
    jButton1.addActionListener(new MainFrame_jButton1_actionAdapter(this));
    jButton2.setText("发送信息");
    jButton2.addActionListener(new MainFrame_jButton2_actionAdapter(this));
    jButton2.setFont(new java.awt.Font("Dialog", 0, 14));
    jButton2.setBounds(new Rectangle(280, 53, 106, 26));
    jTextField3.setBounds(new Rectangle(14, 53, 254, 26));
    jTextField3.setText("hello");
    jTextField3.setFont(new java.awt.Font("Dialog", 0, 14));
    jScrollPane1.setBounds(new Rectangle(13, 86, 370, 177));
    jTextArea1.setText("");
    contentPane.add(jLabel1, null);
    contentPane.add(jTextField1, null);
    contentPane.add(jLabel2, null);
    contentPane.add(jTextField2, null);
    contentPane.add(jButton1, null);
    contentPane.add(jTextField3, null);
    contentPane.add(jButton2, null);
    contentPane.add(jScrollPane1, null);
    jScrollPane1.getViewport().add(jTextArea1, null);
  }
  //Overridden so we can exit when window is closed
  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }
  class ReadMessageThread extends Thread{
        public void run(){
                while(true){
                        try{
                                socket.receive(dp);
                           } catch (IOException e1) {   //捕捉可能产生的异常
                                   jTextArea1.append("读端口信息出错\n");
                           }
                        String rcvd=new String(dp.getData(),0,dp.getLength());
                        InetAddress ip=dp.getAddress();
                        int port=dp.getPort();
                        rcvd=rcvd+",from address:"+ip+",prot:"+port;
                        jTextArea1.append("从服务器端读入如下的信息:"+rcvd+"\n");
                }
        }
}

  void jButton1_actionPerformed(ActionEvent e) {
    try{
            serverHost=InetAddress.getByName(jTextField1.getText());
    }catch(IOException e1){
                  jTextArea1.append("IP地址出错\n");
       }
    serverPort=Integer.parseInt(jTextField2.getText());
try {
        socket=new DatagramSocket();
        jTextArea1.append("系统提示：客户端数据报套接字建立\n");
     } catch (IOException e2) {   //捕捉可能产生的异常
        jTextArea1.append("端口打开出错\n");
    }
    if (socket != null) {
      ReadMessageThread readThread=new ReadMessageThread();
      readThread.start();
    }

  }

  void jButton2_actionPerformed(ActionEvent e) {
    if (socket != null) {
            String str=jTextField3.getText();
            jTextArea1.append("向服务器发送如下的信息:"+str+"\n");
            buf=str.getBytes();
            dp=new DatagramPacket(buf,buf.length,serverHost,serverPort);
            try{
                    socket.send(dp);
        } catch (IOException e3) {   //捕捉可能产生的异常
                jTextArea1.append("发送信息出错\n");
          }
    }
}



}

class MainFrame_jButton1_actionAdapter implements java.awt.event.ActionListener {
  MainFrame adaptee;

  MainFrame_jButton1_actionAdapter(MainFrame adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton1_actionPerformed(e);
  }
}

class MainFrame_jButton2_actionAdapter implements java.awt.event.ActionListener {
  MainFrame adaptee;

  MainFrame_jButton2_actionAdapter(MainFrame adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton2_actionPerformed(e);
  }
}