ChatProgram--java.rar_java 聊天

package User; import java.awt.Color; import java.awt.Container; import java.awt.Font; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyEvent; import java.awt.event.KeyListener; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import java.io.IOException; import java.net.UnknownHostException; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JOptionPane; import javax.swing.JPasswordField; import javax.swing.JTextField; import javax.swing.UIManager; import javax.swing.UnsupportedLookAndFeelException; public class UserClient extends JFrame implements ActionListener,KeyListener{ JLabel label, JLname, JLpassword, JLIP; JTextField Username,JLIPtext; JPasswordField Password; JButton login, cancel; Container container; SocketServer a = null; static UserClient userclient = null; String IP = null; public UserClient() { super("User-Login..."); setBounds(500, 300, 320, 270); setResizable(false); setAlwaysOnTop(true); this.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { if (a != null) { try { a.closeAll(); a.stop(); } catch (IOException e1) { e1.printStackTrace(); } } quit(); } }); try { UIManager .setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel"); } catch (ClassNotFoundException e) { e.printStackTrace(); } catch (InstantiationException e) { e.printStackTrace(); } catch (IllegalAccessException e) { e.printStackTrace(); } catch (UnsupportedLookAndFeelException e) { e.printStackTrace(); } } public void setLayout() { container = this.getContentPane(); container.setLayout(null); label = new JLabel("用户登录窗口"); label.setBounds(80, 10, 180, 30); label.setFont(new Font(null, Font.BOLD, 25)); label.setForeground(Color.red); container.add(label); JLname = new JLabel("用户名："); JLname.setBounds(35, 50, 100, 30); JLname.setFont(new Font(null, Font.BOLD, 18)); container.add(JLname); Username = new JTextField(); Username.setBounds(108, 50, 150, 30); Username.addKeyListener(this); container.add(Username); JLpassword = new JLabel("密码："); JLpassword.setBounds(55, 97, 80, 30); JLpassword.setFont(new Font(null, Font.BOLD, 18)); container.add(JLpassword); Password = new JPasswordField(); Password.setBounds(108, 97, 150, 30); Password.addKeyListener(this); Password.setEchoChar('☆'); container.add(Password); JLIP=new JLabel("对方IP:"); JLIP.setFont(new Font(null, Font.BOLD, 16)); JLIP.setBounds(45, 144, 150, 30); container.add(JLIP); JLIPtext=new JTextField(); JLIPtext.setBounds(108, 144, 150, 30); JLIPtext.addKeyListener(this); container.add(JLIPtext); login = new JButton("登录"); login.setMnemonic('\n'); login.setBounds(155, 190, 100, 30); login.addActionListener(this); container.add(login); cancel = new JButton("取消"); cancel.setBounds(40, 190, 100, 30); container.add(cancel); } public static void main(String[] args) { userclient = new UserClient(); userclient.setLayout(); userclient.show(); } public void quit() { System.exit(0); } public void actionPerformed(ActionEvent e) { panduan(); } public void panduan() { String name = Username.getText(); String password = Password.getText(); if (name.equals("")) { JOptionPane.showMessageDialog(this, "用户名不能为空", "警告", JOptionPane.ERROR_MESSAGE); return; } for (int i = 0; i < name.length(); i++) { if (name.charAt(i) == ' ') { JOptionPane.showMessageDialog(this, "用户名不能包含空格", "警告", JOptionPane.ERROR_MESSAGE); return; } } if (password.equals("")) { JOptionPane.showMessageDialog(this, "密码不能为空", "警告", JOptionPane.ERROR_MESSAGE); return; } for (int i = 0; i < password.length(); i++) { if (password.charAt(i) == ' ') { JOptionPane.showMessageDialog(this, "密码不能包含空格", "警告", JOptionPane.ERROR_MESSAGE); return; } } if(JLIPtext.getText().equals("")){ JOptionPane.showMessageDialog(this, "IP地址不能为空", "警告", JOptionPane.ERROR_MESSAGE); return; } try { a = new SocketServer(userclient, Username.getText(), JLIPtext.getText()); } catch (UnknownHostException e1) { JOptionPane.showMessageDialog(this, "IP错误,请输入正确的IP地址", "警告", JOptionPane.ERROR_MESSAGE); } catch (IOException e1) { JOptionPane.showMessageDialog(this, "服务器处于关闭状态", "警告", JOptionPane.ERROR_MESSAGE); } } public void keyPressed(KeyEvent e) { int keyCode=e.getKeyCode(); switch(keyCode){ case KeyEvent.VK_ENTER: if(e.getSource()==Username){ Password.requestFocus(); }else if(e.getSource()==Password){ JLIPtext.requestFocus(); }else if(e.getSource()==JLIPtext){ panduan(); } break; } } public void keyReleased(KeyEvent e) { } public void keyTyped(KeyEvent e) { } }