swing之JDialog

package canying;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;

import java.io.File;
import java.sql.ResultSet;
import java.sql.SQLException;

import javax.imageio.ImageIO;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JPopupMenu;
import javax.swing.JTextField;

import shujuku.basedao;

public class denglu extends JDialog implements ActionListener,KeyListener{

    JLabel jl1,jl2,jl3;
    JTextField jt;
    JPasswordField jpf;
    JButton jb1,jb2;
    public static void main(String[] args)//这个主函数不需要，只是为了调试用
      {

        denglu dg=new denglu();

      }

    public denglu()
        {
        jl1=new JLabel("用户名");
        jl1.setBounds(, , , );//设置改标签的位置
        this.add(jl1);
        jl2=new JLabel("(或员工编号)");
        jl2.setForeground(Color.red);//设置此对象的前景色
        jl2.setBounds(, , , );
        this.add(jl2);
        jl3=new JLabel("密码");
        jl3.setBounds(, , , );
        this.add(jl3);

        jt=new JTextField();
        jt.setFocusable(true);
        jt.setBounds(, , , );//设置位置
        this.add(jt);
        jt.setBorder(BorderFactory.createLoweredBevelBorder());//设置边框凹下去的效果

        jpf=new JPasswordField();
        jpf.setFocusable(true);
        jpf.setBounds(, , , );
        jpf.addKeyListener(this);
        this.add(jpf);
        jpf.setBorder(BorderFactory.createLoweredBevelBorder());

        jb1=new JButton("确定");
        jb1.setBounds(, , , );
        jb1.setForeground(Color.blue);
        jb1.addActionListener(this);
        final String id=jb1.getText();
        JPopupMenu pop=new JPopupMenu(id);
        JMenuItem it1=new JMenuItem ("功能1");
        it1.addMouseListener(new MouseListener()
         {
            @Override
            public void mouseReleased(MouseEvent e)
         {
             System.out.println(" 右键功能");
         }

            @Override
            public void mouseClicked(MouseEvent arg0) {
                // TODO Auto-generated method stub

            }

            @Override
            public void mouseEntered(MouseEvent arg0) {
                // TODO Auto-generated method stub

            }

            @Override
            public void mouseExited(MouseEvent arg0) {
                // TODO Auto-generated method stub

            }

            @Override
            public void mousePressed(MouseEvent arg0) {
                // TODO Auto-generated method stub

            }

         });
        this.add(jb1);        

        jb2=new JButton("取消");
        jb2.setBounds(, , , );
        jb2.setForeground(Color.blue);
        jb2.addActionListener(this);
        this.add(jb2);    

        this.setLayout(null);//空布局是为了各组件在指定的位置显示
        backimage bi=new backimage();
        bi.setBounds(, , , );
        this.add(bi);
        this.setUndecorated(true);//去掉JFrame的边框
        this.setSize(,);
        int width=getToolkit().getDefaultToolkit().getScreenSize().width;
        int height=getToolkit().getDefaultToolkit().getScreenSize().height;
        this.setLocation(width/-, height/-);
        this.setVisible(true);
        }

    @Override
    public void actionPerformed(ActionEvent e) {
        // TODO Auto-generated method stub
        if(e.getSource()==jb1)
         {
            String usr=this.jt.getText().trim();
            String ps=new String(this.jpf.getPassword());
            String sql="select zhiwei from renyuan a,zheze b where a.pK_id=b.pk_id and a.name=? and a.passwd=?";
            Object [] ob={usr,ps};
            basedao db=new basedao();
            ResultSet rs;
            rs=db.execute(sql, ob, );
            try {
                if(rs.next())
                 {
                    String zhiwei=rs.getString();
                    if(zhiwei.equals("manager"))
                     {

                        this.dispose();
                        new caozuo();
                     }
                    else
                      {
                        JOptionPane.showMessageDialog(this, "很抱歉 你没有权限 请联系管理员");
                      }
                 }
                else
                {
                    JOptionPane.showMessageDialog(this, "用户名或密码错误！");
                }
            } catch (SQLException e1) {
                // TODO Auto-generated catch block
                e1.printStackTrace();
            }

         }

        if(e.getSource()==jb2)
         {
            this.dispose();

         }

    }

    @Override
    public void keyPressed(KeyEvent arg0) {
        // TODO Auto-generated method stub
        if(arg0.getKeyCode()==KeyEvent.VK_ENTER)
         {

            String usr=this.jt.getText().trim();
            String ps=new String(this.jpf.getPassword());
            String sql="select zhiwei from renyuan a,zheze b where a.pK_id=b.pk_id and a.name=? and a.passwd=?";
            Object [] ob={usr,ps};
            basedao db=new basedao();
            ResultSet rs;
            rs=db.execute(sql, ob, );
            try {
                if(rs.next())
                 {
                    String zhiwei=rs.getString();
                    if(zhiwei.equals("manager"))
                     {

                        this.dispose();
                        new caozuo();
                     }
                    else
                      {
                        JOptionPane.showMessageDialog(this, "很抱歉 你没有权限 请联系管理员");
                      }
                 }
                else
                {
                    JOptionPane.showMessageDialog(this, "用户名或密码错误！");
                }
            } catch (SQLException e1) {
                // TODO Auto-generated catch block
                e1.printStackTrace();
            }

         }
    }

    @Override
    public void keyReleased(KeyEvent arg0) {
        // TODO Auto-generated method stub

    }

    @Override
    public void keyTyped(KeyEvent arg0) {
        // TODO Auto-generated method stub

    }
}

class backimage extends JPanel
   {
    Image im;
    public backimage()
     {
        try{
            im=ImageIO.read(new File("image/0304_5.jpg"));

        }catch(Exception e){e.printStackTrace();}

     }

    public void paint(Graphics g)

    {
        g.drawImage(im, , , , , this);

    }
   }