用java语言编一个聊天小程序.doc

用java语言编一个聊天小程序要求：使用图形用户界面。能实现一个聊天室中多人聊天。可以两人私聊。提示：使用socket通信import java.awt.*;import java.awt.event.*;import javax.swing.*;import .*;import java.io.*;public class test public static void main(String args) EventQueue.invokeLater(new Runnable() public void run() DrawFrame frame = new DrawFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); ); class DrawFrame extends JFrame public DrawFrame() setLocation(100,100); setTitle(我的QQ); setSize(DEFAULT_WIDTH,DEFAULT_HEIGHT);/添加菜单项 JMenuBar menuBar = new JMenuBar(); setJMenuBar(menuBar); JMenu edit = new JMenu(菜单); menuBar.add(edit); JMenuItem sset = new JMenuItem(设置); JMenuItem eexit = new JMenuItem(退出); edit.add(sset); edit.addSeparator(); edit.add(eexit); final DrawPanel pan = new DrawPanel(); /添加设置对话框 sset.addActionListener(new ActionListener() public void actionPerformed(ActionEvent event) final JFrame jf = new JFrame(设置); jf.setSize(300,150); jf.setLocation(200,200); jf.setResizable(false); jf.setVisible(true); JPanel jp = new JPanel(); final JTextField jt1 = new JTextField(20); final JTextField jt2 = new JTextField(20); final JTextField jt3 = new JTextField(20); jp.add(new JLabel(聊天端口:); jf.add(jp); jp.add(jt1); jp.add(new JLabel(目标地址:); jp.add(jt2); jp.add(new JLabel(文件端口:); jp.add(jt3); JButton jb1 = new JButton(确定); JButton jb2 = new JButton(取消); jp.add(jb1); jp.add(jb2); /设置“设置”按钮 jb1.addActionListener(new ActionListener() public void actionPerformed(ActionEvent event) try int cat1 = Integer.parseInt(jt1.getText(); pan.setCat1(cat1);/设置对话端口号 int cat2 = Integer.parseInt(jt3.getText(); pan.setCat2(cat2);/设置文件传输端口号 String s = jt2.getText(); pan.setIP(s);/设置IP地址 pan.ls(); catch(Exception e) e.printStackTrace(); jf.dispose();/关闭对话框 ); jb2.addActionListener(new ActionListener() public void actionPerformed(ActionEvent event) jf.dispose(); ); ); eexit.addActionListener(new ActionListener() public void actionPerformed(ActionEvent event) System.exit(0); ); add(pan); pack(); public static final int DEFAULT_WIDTH = 400; public static final int DEFAULT_HEIGHT = 400;class DrawPanel extends JPanel DatagramSocket ds; DatagramPacket dp; DatagramSocket ds1; DatagramPacket dp1; Thread thread; Thread thread1; TextArea textArea1 = new TextArea(10,50); TextArea textArea2 = new TextArea(10,50); JTextField textField = new JTextField(50); static int cat1,cat2; static String IP; public void setCat1(int cat) cat1 = cat; public void setCat2(int cat) cat2 = cat; public void setIP(String ip) IP=ip; /重置端口号 public void ls() try ds = new DatagramSocket(cat1); ds1 = new DatagramSocket(cat2); catch(Exception e) e.printStackTrace(); thread = new Thread(new Runnable() public void run() byte buf = new byte1024;/聊天每次发送文字不能超过1024b DatagramPacket dp = new DatagramPacket(buf,buf.length); while(true) try ds.receive(dp); textArea1.setText(textArea1.getText()+ new String(buf,0,dp.getLength() + rn); catch(Exception e) e.printStackTrace(); ); thread.start(); public DrawPanel() setLayout(new BorderLayout(); JTabbedPane card = new JTabbedPane(); textArea1.setEditable(false); card.add(聊天,textArea1); add(card,BorderLayout.NORTH); JPanel center = new JPanel(); center.setLayout(new FlowLayout(); center.add(new JLabel(昵称：); center.add(textField); add(center,BorderLayout.CENTER); JPanel south = new JPanel(); south.setLayout(new BorderLayout(); south.add(textArea2,BorderLayout.NORTH); JPanel south2 = new JPanel(); south2.setLayout(new FlowLayout(); JButton sent = new JButton(传送文件); JButton receive = new JButton(接收文件); /receive.setEnabled(false); JButton sentMessage = new JButton(发送); south2.add(sent); south2.add(receive); south2.add(sentMessage); add(south,BorderLayout.SOUTH); south.add(south2,BorderLayout.SOUTH); /发送信息的按钮的监听器: sentMessage.addActionListener(new ActionListener() public void actionPerformed(ActionEvent event) textArea1.append(textField.getText()+:+textArea2.getText()+n); String s; try s = textField.getText() + : + textArea2.getText(); byte buf = s.getBytes(); dp = new DatagramPacket(buf,buf.length,InetAddress.getByName(IP),cat1); ds.send(dp); textArea2.setText(); catch (Exception ex) ex.printStackTrace(); ); /发送文件的按钮的监听器 sent.addActionListener(new ActionListener() public void actionPerformed(ActionEvent event) JFrame f = new JFrame(打开); f.setSize(400,300); JFileChooser chooser = new JFileChooser(); f.add(chooser); int returnVal = chooser.showOpenDialog(f); if(returnVal = JFileChooser.APPROVE_OPTION) textArea1.append(正在传送文件:+chooser.getCurrentDirectory()+ +chooser.getSelectedFile().getName()+n); try byte b = new byte10248; FileInputStream fis = new FileInputStream(chooser.getSelectedFile(); DataInputStream dos =new DataInputStream(fis); dos.read(b); dp1 = new DatagramPacket(b,b.length,InetAddress.getByName(IP),cat2); ds1.send(dp1); catch (Exception e) e.printStackTrace(); ); /接收文件的按钮的监听器: receive.addActionListener(new ActionListener() public void actionPerformed(ActionEvent event) JFrame f1 = new JFrame(保存); f1.setSize(400,300); byte buf = new byte10248; DatagramPacket dp1 = new DatagramPacket(buf,buf.length); JFileChooser ch = new JFileChooser(