Java GUI学生成绩管理系统3种权限登录界面

package main;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import DataBase.*;
import org.jvnet.substance.SubstanceLookAndFeel;
import org.jvnet.substance.border.StandardBorderPainter;
import org.jvnet.substance.button.StandardButtonShaper;
import org.jvnet.substance.watermark.SubstanceBubblesWatermark;

@SuppressWarnings("serial")
public class LoginSystem extends JFrame implements ActionListener,ItemListener{
JPanel panel2,jpanel;
JLabel UserType,UserLabel,PasswordLabel;
JTextField UserTextField;
JPasswordField PasswordTextField;
JButton Yes,Cancel,Exit;
@SuppressWarnings("rawtypes")
JComboBox UserSelect;
String user[]={"","学生用户","教师用户","管理员"};


Container c;
int i;
Image image=new ImageIcon("src/main/123.jpg").getImage();
ImageIcon labIma=new ImageIcon("src/main/123.jpg");
@SuppressWarnings({ "rawtypes", "unchecked" })
LoginSystem(){
super("用户登录");
jpanel=new MyPanel(image);
jpanel=new MyPanel(image);

UserType=new JLabel("用户类型",JLabel.CENTER);
UserSelect=new JComboBox(user);
UserSelect.addItemListener(this);
UserLabel=new JLabel("用户名",JLabel.CENTER);
PasswordLabel=new JLabel("密码",JLabel.CENTER);

UserTextField=new JTextField(10);
PasswordTextField=new JPasswordField(10);

Yes=new JButton("确定");
Cancel=new JButton("取消");
Exit=new JButton("退出");

Yes.addActionListener(this);
Cancel.addActionListener(this);
Exit.addActionListener(this);
              
jpanel.setLayout(new GridLayout(3,2,2,50));
panel2=new JPanel();
c=getContentPane();
c.setLayout(new BorderLayout());

jpanel.add(UserType);
jpanel.add(UserSelect);
jpanel.add(UserLabel);
jpanel.add(UserTextField);
jpanel.add(PasswordLabel);
jpanel.add(PasswordTextField);
 
c.add(jpanel,BorderLayout.CENTER);
panel2.add(Yes);
panel2.add(Cancel);
panel2.add(Exit);

c.add(panel2, BorderLayout.SOUTH);
setBounds(300,300,labIma.getIconWidth(),labIma.getIconHeight());
setVisible(true);
}

public void itemStateChanged(ItemEvent e)
{
i=UserSelect.getSelectedIndex();
}
@SuppressWarnings("deprecation")
public void actionPerformed(ActionEvent e)
{
if(e.getSource()==Cancel)
{
UserTextField.setText("");
PasswordTextField.setText("");
return;

}
if(e.getSource()==Exit)
{
System.exit(0);
}
else
{
if(UserTextField.getText().trim().equals(""))
{
JOptionPane.showMessageDialog(null, "用户名不能为空");
return;
}
if(PasswordTextField.getText().trim().equals(""))
{
JOptionPane.showMessageDialog(null, "密码不能为空");
return;
}
boolean islogin=false;
switch(i)
{
case 1:
if(Service.getUserType(UserTextField.getText().trim(),PasswordTextField.getText().trim())>0)
{
//JOptionPane.showMessageDialog(null, "学生登陆成功");
try {
new StudentFrame(UserTextField.getText().trim());
} catch (Exception e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
dispose();
islogin=true;

}break;
case 2:
if(Service.getUserType(UserTextField.getText().trim(),PasswordTextField.getText().trim())>0)
{
//JOptionPane.showMessageDialog(null, "教师登陆成功");
new TeacherFrame(UserTextField.getText().trim());
dispose();
islogin=true;
}break;
case 3:
if(Service.getAdminId(UserTextField.getText().trim(),PasswordTextField.getText().trim())>0)
{
//JOptionPane.showMessageDialog(null, "管理员登陆成功");
new MainFrame();
dispose();
islogin=true;
}break;
default:
break;
 }
if(!islogin){
JOptionPane.showMessageDialog(null, "用户名错误或者密码不正确");
}
}

}
public static void main(String args[]){
   try {
            UIManager.setLookAndFeel(new SubstanceLookAndFeel());
            JFrame.setDefaultLookAndFeelDecorated(true);
            JDialog.setDefaultLookAndFeelDecorated(true);
//            SubstanceLookAndFeel.setCurrentTheme(new SubstanceTerracottaTheme());
//          SubstanceLookAndFeel.setSkin(new EmeraldDuskSkin());
//          SubstanceLookAndFeel.setCurrentButtonShaper(new ClassicButtonShaper());
          SubstanceLookAndFeel.setCurrentWatermark(new SubstanceBubblesWatermark());
//          SubstanceLookAndFeel.setCurrentBorderPainter(new StandardBorderPainter());
//            SubstanceLookAndFeel.setCurrentGradientPainter(new StandardGradientPainter());
//            SubstanceLookAndFeel.setCurrentTitlePainter(new FlatTitePainter());
       // 设置边框
          SubstanceLookAndFeel.setCurrentBorderPainter(new StandardBorderPainter());
       // 设置按钮外观
          SubstanceLookAndFeel.setCurrentButtonShaper(new StandardButtonShaper()); 
          
        } catch (Exception e) {
            System.err.println("Something went wrong!");
        }

@SuppressWarnings("unused")
LoginSystem mainFrame=new LoginSystem();
}
 
}