login3test.java

模仿qq的聊天系统,java做的,能基本实现聊天同信功能

package com.hs ;

import java.awt.* ;
import javax.swing.* ;
import java.awt.event.* ;
import java.sql.* ;

public class LogIn3Test extends JFrame implements ActionListener {
	JTextField t_username = new JTextField() ;
	JPasswordField t_password = new JPasswordField() ;
		
	LogIn3Test() {
		this.setTitle("新用户注册") ;
		this.setSize(250 , 300) ;
		this.setLocation(720 , 194) ;
		
		JLabel l_username = new JLabel("  用户名    ") ;
		l_username.setForeground(Color.red) ;
		JLabel l_password = new JLabel("  登陆密码  ") ;
		l_password.setForeground(Color.red) ;
		JLabel l_age = new JLabel("   年龄    ") ;
		JLabel l_gender = new JLabel("  性别  ") ;
		JLabel l_birthday = new JLabel("  出生年月  ") ;
		JLabel l_address = new JLabel("  家庭地址  ") ;
		

		JTextField t_age = new JTextField() ;
		JTextField t_gender = new JTextField() ;
		JTextField t_birthday = new JTextField() ;
		JTextField t_address = new JTextField() ;
		
		JButton b_ok = new JButton("  申请  ") ;
		JButton b_unok = new JButton("  取消  ") ;
		
		//注册按钮监听
		b_ok.addActionListener(this) ;
		b_unok.addActionListener(this) ;
		
		JPanel p_button = new JPanel(new FlowLayout()) ;
		p_button.add(b_ok) ;
		p_button.add(b_unok) ;
		
		JPanel p_label = new JPanel(new GridLayout(6 , 1 , 5 , 5)) ;
		p_label.add(l_username) ;
		p_label.add(l_password) ;
		p_label.add(l_age) ;
		p_label.add(l_gender) ;
		p_label.add(l_birthday) ;
		p_label.add(l_address) ;
		
		JPanel p_field = new JPanel(new GridLayout(6 , 1 , 5 , 5)) ;
		p_field.add(t_username) ;
		p_field.add(t_password) ;
		p_field.add(t_age) ;
		p_field.add(t_gender) ;
		p_field.add(t_birthday) ;
		p_field.add(t_address) ;
		
		JPanel p_landf = new JPanel(new BorderLayout()) ;
		p_landf.add(p_label , BorderLayout.WEST) ;
		p_landf.add(p_field , BorderLayout.CENTER) ;
		
		this.add(p_landf , BorderLayout.CENTER) ;
		this.add(p_button , BorderLayout.SOUTH) ;
		
	}

	public void actionPerformed(ActionEvent e) {
		if(e.getActionCommand().equals("  申请  ")) {
			if(t_username.getText().length()>=3 &&t_username.getText().length()<= 10 
				&&t_password.getText().length()>=3&&t_password.getText().length() <= 10) {
				
				try {
					Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver") ;
					Connection cn = DriverManager.getConnection("jdbc:microsoft:sqlserver://127.0.0.1:1433;databasename=QQ" , "sa" , "1234") ;
		
					PreparedStatement ps = cn.prepareStatement("insert into Users values(?,?)") ;
					ps.setString(1 , t_username.getText()) ;
					ps.setString(2 , t_password.getText()) ;
					
					ps.executeUpdate() ;
					System.out.println ("注册信息写入数据库成功") ;
					
					JOptionPane.showMessageDialog(null, 
								"您的用户名为: "+t_username.getText()+"\n"+"密码为: "+t_password.getText()+"  请注意保管",
								"恭喜您,申请成功", JOptionPane.CLOSED_OPTION);
					
					t_password.setText("") ;			
								
			    }
			    catch (Exception ex) {
			    }				
			}else {
				JOptionPane.showMessageDialog(null , "滚蛋,没一点诚意") ;
			}

		}
	}
	
	/*public static void main(String[] args) {
		LogIn3Test l  = new LogIn3Test() ;
		
		l.setVisible(true) ;
	}*/
}