loginview.java

java实现的取款机 前台为图形界面 后面数据用xml存储

package atm;
import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.TextEvent;
import java.awt.event.TextListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.IOException;
import java.sql.SQLException;

import javax.swing.*;
import javax.swing.event.*;
public class Loginview  extends WindowAdapter implements ActionListener,TextListener
{
    private Iatm atm;
	private JFrame jf;
    private JLabel jl1;
    private JLabel jl2;
    private JLabel jl3;
    private JLabel jl4;
    private JTextField jt1;
    private JTextField jt2;
    private JButton jb;
    private JPanel jp;
    private JPanel jp1;
    private JLabel jl5;
    public Loginview()
    {
    	jf = new JFrame("用户登录界面");
    	atm = new Dbatm();
    	jf.setSize(320,200);
    	jf.setLocation(100,100);
    	jp = new JPanel();
    	jp.setLayout(new FlowLayout(FlowLayout.RIGHT));
    	jp1 = new JPanel();
    	jp1.setLayout(new FlowLayout(FlowLayout.RIGHT));
    	jl1 = new JLabel("帐号:");
    	jl2 = new JLabel("密码:");
    	jl3 = new JLabel("帐号可为字符串");
    	jl4 = new JLabel("密码只能为数字");
    	jl5 = new JLabel("ATM系统");
    	jt1 = new JTextField(12);
//    	jt1.setSize(100,100);
    	jt2 = new JTextField(12);
    	jb = new JButton("登陆");
    	jf.setLayout(new FlowLayout(FlowLayout.CENTER));
    	jf.add(jl5);
    	jp.add(jl1);
    	jp.add(jt1);
    	jp.add(jl3);
    	jp1.add(jl2);
    	jp1.add(jt2);
    	jp1.add(jl4);
    	jf.add(jp);
    	jf.add(jp1);
    	jf.add(jb);
    	jf.setVisible(true);
    	jb.addActionListener(this);
    	jt1.addActionListener(this);
    	jt2.addActionListener(this);
    	//jt1.addTextListener(this);
    }
    public  void actionPerformed(ActionEvent e) 
    {
    	try {
			if(atm.login(jt1.getText(), Integer.parseInt(jt2.getText())) !=null)
			{
				 new Operate(new User(jt1.getText(), Integer.parseInt(jt2.getText())));
			}
			else
			{
				 jl3.setText("用户名或密码错误");
			}
		} catch (NumberFormatException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		} 
			   
    }
    public void textValueChanged(TextEvent e)
    {
    	Object source  = e.getSource();
    	String str;
        char[] ch = new char[50];
        if(source == jt2)
        {
          str = jt2.getText();
          ch = str.toCharArray();
          for(int i = 0 ; i < str.length(); i++)
          {
	        if(Character.isLetter(ch[i]))
	       	 {
        	     jl4.setBackground(Color.RED);
	       		 jl4.setForeground(Color.RED);
	       		 jl4.setText("不能输入字母");
             }
          }
       } 
    }
    public void windowClosing(WindowEvent e)
    {
  	    System.exit(0);  
    }
  	public static void main(String[] args) 
  	{
         new Loginview();
  	}
}