login.java

在本系统中

package jin.login;

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

import jin.view.*;
import jin.handler.*;

public class Login extends JInternalFrame
{
	private JLabel[] labels;
	private JTextField[] fields;
	
	private JPasswordField passwordField;
	private ButtonsPanel buttonsPanel;
	
	private JPanel[] panels;
	private JPanel north;
	private JPanel south;
	private JPanel imagePanel;
	
	private Checkbox[] checkboxs;
	private CheckboxGroup group;
	
	private JDesktopPane desktopPane;
	private JFrame frame;
	
	//加了3个label   1个field   2个panel
	public Login(JFrame frame)
	{
		super("",true,true,true,true);
		this.frame=frame;
		labels=new JLabel[6];
		
		
		fields=new JTextField[2];
		
		for(int i=0;i<2;i++)
		{
			fields[i]=new JTextField(8);
		}
		passwordField=new JPasswordField(8);
		
		buttonsPanel=new ButtonsPanel(2);		
		
		panels=new JPanel[6];
		north=new JPanel();
		south=new JPanel(new GridLayout(6,1));		
		
		checkboxs=new Checkbox[3];		
		
		group=new CheckboxGroup();
		checkboxs[0]=new Checkbox("管理员",true,group);
		checkboxs[1]=new Checkbox("教师",false,group);	
		checkboxs[2]=new Checkbox("学生",false,group);		
	
		String[] titles={"帐号            ","密码            ","欢迎登录学生选课系统","验证码            ","输入验证码",""};
		
		String[] captions={"确定","退出"};		
		
		buttonsPanel.setTitles(captions);		

		Font font=new Font("楷体",Font.BOLD,16);
		
		
		for(int i=0;i<6;i++)
		{
			labels[i]=new JLabel(titles[i]);
			labels[i].setFont(font);		
		}	
		
		String text="";
		for(int i=0;i<4;i++)
		{
			int num=(int)(Math.random()*10);
			text=text+num;
		}
		
		labels[5].setText(text);
		labels[5].setSize(300,300);
			
		Font font1=new Font("幼圆",Font.BOLD,36);
		labels[5].setFont(font1);
		labels[5].setForeground(Color.GREEN);
		labels[5].setOpaque(true);
		//labels[5].setBackground(Color.pink);	
	
		
		Font font2=new Font("楷体",Font.BOLD,34);
		labels[2].setFont(font2);
		labels[2].setForeground(Color.CYAN);
		labels[2].setOpaque(true);
		labels[2].setBackground(Color.pink);	
		north.add(labels[2]);
		north.setBackground(Color.pink);
		
		imagePanel=new JPanel();
		Icon icon=new ImageIcon("flower.jpg");
		
		JLabel pic=new JLabel(icon);		
		imagePanel.add(pic);	
		
		for(int i=0;i<6;i++)
		{
			panels[i]=new JPanel();	
			south.add(panels[i]);		
		}
		
		panels[3].add(labels[3]);
		panels[3].add(labels[5]);
		
		
		panels[4].add(labels[4]);
		panels[4].add(fields[1]);
		LoginHandler logHandler=new LoginHandler(this);
		
		panels[0].add(checkboxs[0]);
		panels[0].add(checkboxs[1]);
		panels[0].add(checkboxs[2]);
		
		panels[1].add(labels[0]);
		panels[1].add(fields[0]);		
		
		panels[2].add(labels[1]);
		panels[2].add(passwordField);		
		
		panels[5].add(buttonsPanel);
		
		add(north,BorderLayout.NORTH);
		add(imagePanel,BorderLayout.CENTER);
		add(south,BorderLayout.SOUTH);
		
		desktopPane=new JDesktopPane();
		desktopPane.add(this);
		
		frame.add(desktopPane);
		this.setSize(660,740);	
		this.setVisible(true);
		//this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}
	
	
	//fields[2] 输入的是验证码 labels[5] 给出的验证码
	
	public JLabel getLagbel()
	{
		return labels[5];
	}
	public JTextField getField(int index)
	{
		return this.fields[index];
	}
	
	public JPasswordField getPasswordField()
	{
		return this.passwordField;
	}
	
	public JButton[] getButtons()
	{
		return buttonsPanel.getButtons();
	}
	
	public JButton getButton(int index)
	{
		return buttonsPanel.getButton(index);
	}

	public Checkbox getCheckbox(int index)
	{
		return checkboxs[index];
	}
	public JFrame getFrame()
	{
		return this.frame;
	}
	
	public JDesktopPane getDesktopPane()
	{
		return this.desktopPane;
	}
	
	public static void main(String args[])
	{
		JFrame frame=new JFrame();
		Login login=new Login(frame);
		frame.setSize(680,760);
		frame.setVisible(true);
	}
}
 
/*
		field.addActionListener(
			new ActionListener()
			{
				public void actionPerformed(ActionEvent e)
				{
					passwordField.grabFocus();
				}
			}
		);
		
		//文本框输入验证
		field.addKeyListener(
			new KeyAdapter()
			{
				public void keyPressed(KeyEvent e)
				{
					if((e.getKeyCode()>=0&&e.getKeyCode()<=9)||(e.getKeyChar()>='a'&&e.getKeyChar()<='z')||(e.getKeyChar()>='A'||e.getKeyChar()<='Z'))
					{
						System.out.println(e.getKeyChar());
					}
					else
					{
						field.setText("");
						System.out.println("AAAAAAAAAAA");
					}						
				}
			}			
		);
		
		passwordField.addActionListener(
			new ActionListener()
			{
				public void actionPerformed(ActionEvent e)
				{
					field.grabFocus();
				}
			}
		);
		
		//密码框输入验证
		passwordField.addKeyListener(
			new KeyAdapter()
			{
				public void keyPressed(KeyEvent e)
				{
					if((e.getKeyCode()>=0&&e.getKeyCode()<=9)||(e.getKeyChar()>='a'&&e.getKeyChar()<='z')||(e.getKeyChar()>='A'||e.getKeyChar()<='Z'))
					{
						//System.out.println(e.getKeyChar());
						
					}
					else
					{
						field.setText("");
						System.out.println("AAAAAAAAAAA");
					}
				}
			}		
		);
		
		buttons[0].addActionListener(
			new ActionListener()
			{
				public void actionPerformed(ActionEvent e)
				{					
					//连接数据库验证
					if(checkboxs[1].getState()==true)
					{
						String sql="select id,password from StudLogin";
		
						UsersDAO usersDAO=new UsersDAO();
						
						ArrayList logins=usersDAO.excuteQuery(sql);
						
						LoginBean loginBean=null;						
						
						logins=usersDAO.excuteQuery(sql);
						
						boolean N=false;
						
						for(int i=0;i<logins.size();i++)
						{
							loginBean=(LoginBean)logins.get(i);						
							
							if(field.getText().trim().equals(loginBean.getId().trim())&&passwordField.getText().trim().equals(loginBean.getPassword().trim()))
							{							
								N=true;							
							}							
						}
						
						if(N) 
						{
							System.out.println("登陆成功");
							Login.this.setVisible(false);
							//Admin admin=new Admin();
						}				
						
						else
						{
							 System.out.println("登陆失败!");
							 System.exit(0);
						}																		
					}
					
					if(checkboxs[0].getState()==true)
					{
						String sql="select id,password from AdminLogin";
		
						UsersDAO usersDAO=new UsersDAO();
						
						ArrayList logins=usersDAO.excuteQuery(sql);
						
						LoginBean loginBean=null;						
						
						logins=usersDAO.excuteQuery(sql);
						
						boolean N=false;
						
						for(int i=0;i<logins.size();i++)
						{
							loginBean=(LoginBean)logins.get(i);						
							
							if(field.getText().trim().equals(loginBean.getId().trim())&&passwordField.getText().trim().equals(loginBean.getPassword().trim()))
							{							
								N=true;							
							}							
						}
						
						if(N) 
						{
							System.out.println("登陆成功");
							Login.this.setVisible(false);
							Admin admin=new Admin();
						}				
						
						else
						{
							 System.out.println("登陆失败!");
							 System.exit(0);
						}																		
					}				
				}
			}
		);
		
		buttons[1].addActionListener(
			new ActionListener()
			{
				public void actionPerformed(ActionEvent e)
				{
					System.exit(0);
				}
			}
		);	
		*/