login.java.bak

个人消费助理 早期的在学校的实训作品 使用ACCESS 数据库

package shophelper.factory;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.sql.*;
import shophelper.factory.Index;
import shophelper.database.*;
 
public class Login
{
	JFrame jf = new JFrame("登陆");
	JTextField textname=new JTextField();
	JPasswordField textmima=new JPasswordField();
	JLabel label= new JLabel("个人消费助理1.0");
	JLabel labelname=new JLabel("用户名");
	JLabel labelmima=new JLabel("密码");
	
	JButton btenter=new JButton("确定");
	JButton btcancel=new JButton("清空");

	String name,password;
	
	public Login()
	{

		//增加关闭窗口监听
		try
		{
			jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

		}
		catch (Exception e)
		{
			System.out.println(e);
		}


		Font f=new Font("新宋体",Font.PLAIN,12);
		Container ctn=jf.getContentPane();
		ctn.setLayout(null);

		label.setBounds(52,10,165,20);		label.setFont(new Font("新宋体",Font.PLAIN,20));
		ctn.add(label);
		textname.setBounds(95,40,120,20);
		ctn.add(textname);

		labelname.setBounds(45,40,55,20);
		labelname.setFont(f);
		ctn.add(labelname);
		textname.setBounds(95,40,120,20);
		ctn.add(textname);
		
		labelmima.setBounds(45,70,45,20);
		ctn.add(labelmima);
		labelmima.setFont(f);
     	textmima.setBounds(95,70,120,20);
		ctn.add(textmima);
		
		btenter.setBounds(90,110,60,20);
		btenter.setFont(f);
		ctn.add(btenter);
		Monitor_1 bt=new Monitor_1();
		btenter.addActionListener(bt);

		btcancel.setBounds(155,110,60,20);
		btcancel.setFont(f);
		ctn.add(btcancel);
		Monitor_2 btc=new Monitor_2();
		btcancel.addActionListener(btc);
		jf.setResizable(false);
		jf.setLocation(400, 200);
		jf.setSize(300,200);
		jf.setVisible(true);
	}
	
	class Monitor_1 implements ActionListener {
 		public void actionPerformed (ActionEvent e){
			if(textname.getText().equals("")){
					new JOptionPane().showMessageDialog(null,"用户名不能为空!");
			}
			else if(textmima.getText().equals("")){
					new JOptionPane().showMessageDialog(null,"密码不能为空!");
			}
			else{
				name = textname.getText();
				password = textmima.getText();

				try
				{
					judge();
				}
				catch (Exception k)
				{
					System.out.println("Login-Judge():"+k);
				}
					
			}
		}
	}

    class Monitor_2 implements ActionListener{
		public void actionPerformed(ActionEvent e)
		{
   			textname.setText("");
   			textmima.setText("");
		}
	}

	public void judge()throws Exception
	{		
		ResultSet rs = AccessSql.loginJudge(name);
		if(rs.next()&&rs.getString(1).equals(password))
		{
			new Index(name,password);
			jf.dispose();
		}
		else
		{
			new JOptionPane().showMessageDialog(null,"用户名或密码输入错误");
		}
		rs.close();
		System.out.println("rs关闭");
	}
}