manager_login.java

JAVA开发的酒店管理系统

import java.awt.*;
import java.awt.event.*;
import java.sql.*;
import javax.swing.*;
import mypackage.flag.myflag;

public class manager_login extends JFrame{
	myflag f=new myflag();
	ResultSet rs;
	String sql;
	JLabel jusername;
	JLabel jpassword;
	JTextField username;
   JPasswordField	password;
	JButton jb1,jb2;
	db_manager db=new db_manager();
	
private void	make_GUI(){
 jusername=new JLabel("用户名* ");
 jpassword=new JLabel("密码* ");
jb1=new JButton("确定");
jb2=new JButton("取消");
username=new JTextField(10);
password=new JPasswordField(10);
Container cp=getContentPane();
JPanel jp=new JPanel();
JPanel jp2 =new JPanel();
jp.setLayout(new FlowLayout());
jp.add(jusername);jp.add(username);
jp.add(jpassword);jp.add(password);
jp2.add(jb1);
jp2.add(jb2);
cp.add(jp,BorderLayout.NORTH);
cp.add(jp2,BorderLayout.SOUTH);
setSize(400,200);
		setVisible(true);	
}
private void action(){
	
	
		jb1.addActionListener(new ActionListener(){
		public void actionPerformed(ActionEvent e){
				
		sql="select * from admin where admin='"+username.getText().trim()+"' and password='"+f.password_safe(password.getText().trim())+"'"; 
    	rs=db.getResult(sql);
    	
    	 try{
    
		if(rs.next())  {
		JOptionPane.showMessageDialog(null,"登陆成功！");
		f.username=rs.getString("admin");
	     f.flag=true;
	     exit();
		}
		else  {JOptionPane.showMessageDialog(null,"用户名或密码错误！");}	
		}catch(SQLException q){
		}
		}
		});
	jb2.addActionListener(new ActionListener(){
		public void actionPerformed(ActionEvent e){
		exit();	
		}
		});
	
	
	
	
}
public void exit(){
		this.dispose();
            }
manager_login(){
	super("管理员登陆");
	make_GUI();
	action();
	
}	
	/*
	public static void main(String[] args){
		new manager_login();
	}*/
}