loginwindow.java

一个自己用JAVA写的聊天程序,希望对大家游泳

package liaotian;
/*
 * LoginWindow.java
 *
 * Created on 2006年11月12日, 下午1:17
 *
 * To change this template, choose Tools | Options and locate the template under
 * the Source Creation and Management node. Right-click the template and choose
 * Open. You can then make changes to the template in the Source Editor.
 */

/**
 *
 * @author xingwang
 */
import java.awt.*;
import java.io.*;
import java.net.*;
import java.awt.event.*;
import javax.swing.*;

public class LoginWindow extends JDialog implements ActionListener {
        DataOutputStream out;
	DataInputStream in;
        Socket sock;
       	JPanel p1 = new JPanel();
	JPanel p2 = new JPanel();
	JPanel p3 = new JPanel();
	JPanel p4 = new JPanel();
	JPanel p5 = new JPanel();
	JTextField txtUserName = new JTextField(15);
	JPasswordField txtPassWord = new JPasswordField(15);
	JButton ok = new JButton("确定");
	JButton cancel = new JButton("取消");
	public LoginWindow() {
            
		setModal(true);
		setBackground(Color.LIGHT_GRAY);
		Container contentPane = this.getContentPane();
		contentPane.setLayout(new GridLayout(5,1));
		p2.add(new JLabel("注册号："));
		p2.add(txtUserName);
		p3.add(new JLabel("密 码：  "));
		p3.add(txtPassWord);
		p4.add(ok);
		p4.add(cancel);
		ok.addActionListener(this);
		cancel.addActionListener(this);
		txtUserName.addActionListener(this);
		txtPassWord.addActionListener(this);
		contentPane.add(p1);
		contentPane.add(p2);
		contentPane.add(p3);
		contentPane.add(p4);
		contentPane.add(p5);
		setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
		setSize(300,220);
		Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
		setLocation((screen.width-300)/2,(screen.height-220)/2);
		setTitle("登录窗口");
		setResizable(false);
		setVisible(true);
                
	}
	public void actionPerformed(ActionEvent e) {
             
                
		if(e.getSource() == ok || e.getSource() == txtPassWord) {
                                try {
				sock = new Socket("10.1.190.135",6000);
				OutputStream os = sock.getOutputStream();
				out = new DataOutputStream(os);
				InputStream is = sock.getInputStream();
				in = new DataInputStream(is);
				//CCommunion th = new CCommunion(this);
				//th.start();
			    }catch(IOException ee) {
				JOptionPane.showMessageDialog(null,"连接服务器失败！");
				return;
			}
                                try {
                                        InetAddress address=InetAddress.getLocalHost();
                                        String IP_name=address.getHostAddress();
                                        String names=address.getHostName();
					out.writeUTF("@logon");
					out.writeUTF(txtUserName.getText());
                                        out.writeUTF(txtPassWord.getText());
                                        out.writeUTF(IP_name);
                                        String strings=in.readUTF();
                                       if(strings.equals("OK")){
                                                new Client(sock);
                                       }
                                       else{
                                            new LoginWindow();
                                       }
				} catch(Exception ee) {}
                               dispose();
                }
		if(e.getSource()== cancel) {
			dispose();
			System.exit(0);
		}
		if(e.getSource() == txtUserName) {
			txtPassWord.requestFocus();
		}
	}
	public static void main(String args[]) {
		
		new LoginWindow();
	}

}