这是我登录表单的编码。
package Viewer;
import Model.DBG1;
import java.sql.ResultSet;
import java.util.Vector;
import javax.swing.JOptionPane;
public class login extends javax.swing.JFrame
{
public login()
{
initComponents();
}
@SuppressWarnings("unchecked")
private void initComponents()
{
jLabel4 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
eid = new javax.swing.JTextField();
login = new javax.swing.JButton();
jLabel5 = new javax.swing.JLabel();
pwd = new javax.swing.JPasswordField();
cancel = new javax.swing.JButton();
jLabel1 = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
getContentPane().setLayout(new org.netbeans.lib.awtextra.AbsoluteLayout());
jLabel4.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N
jLabel4.setForeground(new java.awt.Color(255, 255, 255));
jLabel4.setText("Password");
getContentPane().add(jLabel4, new org.netbeans.lib.awtextra.AbsoluteConstraints(70, 170, 70, -1));
jLabel3.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N
jLabel3.setForeground(new java.awt.Color(255, 255, 255));
jLabel3.setText("User Name");
getContentPane().add(jLabel3, new org.netbeans.lib.awtextra.AbsoluteConstraints(70, 127, -1, 30));
getContentPane().add(eid, new org.netbeans.lib.awtextra.AbsoluteConstraints(170, 130, 210, -1));
login.setIcon(new javax.swing.ImageIcon(getClass().getResource("/Viewer/res/loginn.jpg"))); // NOI18N
login.addActionListener(new java.awt.event.ActionListener()
{
public void actionPerformed(java.awt.event.ActionEvent evt)
{
loginActionPerformed(evt);
}
});
getContentPane().add(login, new org.netbeans.lib.awtextra.AbsoluteConstraints(80, 230, 100, 40));
jLabel5.setFont(new java.awt.Font("Tahoma", 0, 24)); // NOI18N
jLabel5.setForeground(new java.awt.Color(255, 255, 255));
jLabel5.setText("Login");
jLabel5.setBorder(javax.swing.BorderFactory.createBevelBorder(javax.swing.border.BevelBorder.RAISED));
getContentPane().add(jLabel5, new org.netbeans.lib.awtextra.AbsoluteConstraints(70, 80, 140, -1));
getContentPane().add(pwd, new org.netbeans.lib.awtextra.AbsoluteConstraints(170, 170, 210, -1));
cancel.setIcon(new javax.swing.ImageIcon(getClass().getResource("/Viewer/res/cancel.jpg"))); // NOI18N
cancel.addActionListener(new java.awt.event.ActionListener()
{
public void actionPerformed(java.awt.event.ActionEvent evt)
{
cancelActionPerformed(evt);
}
});
getContentPane().add(cancel, new org.netbeans.lib.awtextra.AbsoluteConstraints(280, 230, 100, 40));
jLabel1.setIcon(new javax.swing.ImageIcon(getClass().getResource("/Viewer/res/forloginbackground_.jpg"))); // NOI18N
jLabel1.setMaximumSize(new java.awt.Dimension(2147483647, 2147483647));
getContentPane().add(jLabel1, new org.netbeans.lib.awtextra.AbsoluteConstraints(0, 0, 460, 370));
pack();
}
private void loginActionPerformed(java.awt.event.ActionEvent evt)
{
if (eid.getText().trim().length() == 0 | pwd.getPassword() == null)
{
JOptionPane.showMessageDialog(null, "Username or Password cannot be blank", "Error", 0);
}
else
{
try {
ResultSet rs = new DBG1().getData("select * from user where eid = '" +eid.getText() + "'");
Vector v = new Vector();
if (rs.next())
{
v.add(rs.getString(1));
}
if (v.isEmpty())
{
JOptionPane.showMessageDialog(null, "Invalid Username or Password", "Error", 0);
eid.setText("");
pwd.setText("");
eid.grabFocus();
}
else
{
ResultSet rs1 = new DBG1().getData("select * from login where eid ='" + eid.getText() + "'");
while (rs1.next())
{
String type = (rs1.getString(3));
if (eid.getText().trim().equalsIgnoreCase(rs1.getString("eid")) && pwd.getText().equals(rs1.getString("pwd")) && type.equals("Admin"))
{
this.dispose();
// new Home_Page(eid.getText()).setVisible(true);
// new Home_Page(eid.getText()).setVisible(true);
}
else if (eid.getText().trim().equalsIgnoreCase(rs1.getString("username")) && pwd.getText().equals(rs1.getString("password")) && type.equals("Receptionist"))
{
this.dispose();
// new Home_Page(eid.getText()).setVisible(true);
}
else
{
JOptionPane.showMessageDialog(null, "Invalid Username or Password", "Error", 0);
eid.setText("");
pwd.setText("");
eid.grabFocus();
}
}
System.out.println("Succeeded");
}
}
catch (Exception e)
{
System.out.println(e);
}
}
//System.exit(0); This one closes the Home_Page as well
}
private void cancelActionPerformed(java.awt.event.ActionEvent evt)
{
new login().dispose();
System.out.println(pwd.getPassword());
System.out.println("Cleared");
}
public static void main(String args[])
{
try
{
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels())
{
if ("Nimbus".equals(info.getName()))
{
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
}
catch (ClassNotFoundException ex)
{
java.util.logging.Logger.getLogger(login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
catch (InstantiationException ex)
{
java.util.logging.Logger.getLogger(login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
catch (IllegalAccessException ex)
{
java.util.logging.Logger.getLogger(login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
catch (javax.swing.UnsupportedLookAndFeelException ex)
{
java.util.logging.Logger.getLogger(login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
java.awt.EventQueue.invokeLater(new Runnable()
{
public void run()
{
new login().setVisible(true);
}
});
}
private javax.swing.JButton cancel;
private javax.swing.JTextField eid;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JLabel jLabel5;
private javax.swing.JButton login;
private javax.swing.JPasswordField pwd;
}
===================================================================
这是我的Home_Page的编码。 包查看器;
import Model.JDBC;
import java.awt.Dimension;
import java.awt.Toolkit;
import java.sql.ResultSet;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JOptionPane;
public class Home_Page extends javax.swing.JFrame
{
String User;
Model.JDBC j=new JDBC();
public Home_Page()
{
initComponents();
// User=user;
Toolkit t = Toolkit.getDefaultToolkit();
Dimension d = t.getScreenSize();
int w = (int) d.getWidth();
int h = (int) d.getHeight()-40;
setBounds(0, 0, w, h);
jLabel2.setText(new Controler.getDate().date());
time();
// jLabel3.setText(user);
ResultSet rs;
try
{
// rs = j.getData("select type from login where eid='"+eid+"'");
/* if(rs.next()){
if(rs.getString(1).equals("Admin"))
{
home.setEnabled(true);
job.setEnabled(true);
employee.setEnabled(true);
jButton1.setEnabled(true);
machine.setEnabled(true);
branch.setEnabled(true);
}
else if(rs.getString(1).equals("user"))
{
home.setEnabled(false);
machine.setEnabled(false);
branch.setEnabled(false);
employee.setEnabled(false);
}
else
{
}
}*/
}
catch (Exception ex)
{
Logger.getLogger(Home_Page.class.getName()).log(Level.SEVERE, null, ex);
}
}
public static void time()
{
new Thread(new Runnable()
{
public void run()
{
while (true)
{
String times = new Date().toString();
String h = times.split(" ")[3];
// jLabel1.setText(h);
try
{
Thread.sleep(60);
}
catch (Exception e)
{
e.printStackTrace();
}
}
}
}).start();
}
@SuppressWarnings("unchecked")
private void initComponents()
{
jToolBar1 = new javax.swing.JToolBar();
home = new javax.swing.JButton();
job = new javax.swing.JButton();
employee = new javax.swing.JButton();
jButton1 = new javax.swing.JButton();
machine = new javax.swing.JButton();
branch = new javax.swing.JButton();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jDesktopPane1 = new javax.swing.JDesktopPane();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jToolBar1.setRollover(true);
home.setIcon(new javax.swing.ImageIcon(getClass().getResource("/Viewer/res/home.jpg"))); // NOI18N
home.setText("Home");
home.setBorder(new javax.swing.border.SoftBevelBorder(javax.swing.border.BevelBorder.RAISED));
home.setFocusable(false);
home.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);
home.setMaximumSize(new java.awt.Dimension(100, 100));
home.setVerticalTextPosition(javax.swing.SwingConstants.BOTTOM);
home.addAncestorListener(new javax.swing.event.AncestorListener()
{
public void ancestorAdded(javax.swing.event.AncestorEvent evt)
{
}
public void ancestorRemoved(javax.swing.event.AncestorEvent evt)
{
homeAncestorRemoved(evt);
}
public void ancestorMoved(javax.swing.event.AncestorEvent evt)
{
}
});
home.addActionListener(new java.awt.event.ActionListener()
{
public void actionPerformed(java.awt.event.ActionEvent evt)
{
homeActionPerformed(evt);
}
});
home.addKeyListener(new java.awt.event.KeyAdapter()
{
public void keyPressed(java.awt.event.KeyEvent evt)
{
homeKeyPressed(evt);
}
});
jToolBar1.add(home);
job.setIcon(new javax.swing.ImageIcon(getClass().getResource("/Viewer/res/jobregistry.jpg"))); // NOI18N
job.setText("Job Registry");
job.setBorder(new javax.swing.border.SoftBevelBorder(javax.swing.border.BevelBorder.RAISED));
job.setFocusable(false);
job.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);
job.setMaximumSize(new java.awt.Dimension(100, 100));
job.setVerticalTextPosition(javax.swing.SwingConstants.BOTTOM);
job.addActionListener(new java.awt.event.ActionListener()
{
public void actionPerformed(java.awt.event.ActionEvent evt)
{
jobActionPerformed(evt);
}
});
job.addKeyListener(new java.awt.event.KeyAdapter()
{
public void keyPressed(java.awt.event.KeyEvent evt)
{
jobKeyPressed(evt);
}
});
jToolBar1.add(job);
employee.setIcon(new javax.swing.ImageIcon(getClass().getResource("/Viewer/res/user.jpg"))); // NOI18N
employee.setText("Employee");
employee.setBorder(new javax.swing.border.SoftBevelBorder(javax.swing.border.BevelBorder.RAISED));
employee.setFocusable(false);
employee.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);
employee.setMaximumSize(new java.awt.Dimension(100, 100));
employee.setVerticalTextPosition(javax.swing.SwingConstants.BOTTOM);
employee.addActionListener(new java.awt.event.ActionListener()
{
public void actionPerformed(java.awt.event.ActionEvent evt)
{
employeeActionPerformed(evt);
}
});
employee.addKeyListener(new java.awt.event.KeyAdapter()
{
public void keyPressed(java.awt.event.KeyEvent evt)
{
employeeKeyPressed(evt);
}
});
jToolBar1.add(employee);
jButton1.setIcon(new javax.swing.ImageIcon(getClass().getResource("/Viewer/res/user4.jpg"))); // NOI18N
jButton1.setText("User");
jButton1.setBorder(new javax.swing.border.SoftBevelBorder(javax.swing.border.BevelBorder.RAISED));
jButton1.setFocusable(false);
jButton1.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);
jButton1.setMaximumSize(new java.awt.Dimension(100, 100));
jButton1.setVerticalTextPosition(javax.swing.SwingConstants.BOTTOM);
jButton1.addActionListener(new java.awt.event.ActionListener()
{
public void actionPerformed(java.awt.event.ActionEvent evt)
{
jButton1ActionPerformed(evt);
}
});
jButton1.addKeyListener(new java.awt.event.KeyAdapter()
{
public void keyPressed(java.awt.event.KeyEvent evt)
{
jButton1KeyPressed(evt);
}
});
jToolBar1.add(jButton1);
machine.setIcon(new javax.swing.ImageIcon(getClass().getResource("/Viewer/res/machine2.jpg"))); // NOI18N
machine.setText("Machine Registry");
machine.setBorder(new javax.swing.border.SoftBevelBorder(javax.swing.border.BevelBorder.RAISED));
machine.setFocusable(false);
machine.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);
machine.setMaximumSize(new java.awt.Dimension(100, 100));
machine.setVerticalTextPosition(javax.swing.SwingConstants.BOTTOM);
machine.addActionListener(new java.awt.event.ActionListener()
{
public void actionPerformed(java.awt.event.ActionEvent evt)
{
machineActionPerformed(evt);
}
});
machine.addKeyListener(new java.awt.event.KeyAdapter()
{
public void keyPressed(java.awt.event.KeyEvent evt)
{
machineKeyPressed(evt);
}
});
jToolBar1.add(machine);
branch.setIcon(new javax.swing.ImageIcon(getClass().getResource("/Viewer/res/branch4.jpg"))); // NOI18N
branch.setText("Branch Registry");
branch.setBorder(new javax.swing.border.SoftBevelBorder(javax.swing.border.BevelBorder.RAISED));
branch.setFocusable(false);
branch.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);
branch.setMaximumSize(new java.awt.Dimension(100, 100));
branch.setVerticalTextPosition(javax.swing.SwingConstants.BOTTOM);
branch.addActionListener(new java.awt.event.ActionListener()
{
public void actionPerformed(java.awt.event.ActionEvent evt)
{
branchActionPerformed(evt);
}
});
branch.addKeyListener(new java.awt.event.KeyAdapter()
{
public void keyPressed(java.awt.event.KeyEvent evt)
{
branchKeyPressed(evt);
}
});
jToolBar1.add(branch);
jLabel1.setText("jLabel1");
jLabel2.setText("jLabel2");
jLabel3.setText("jLabel3");
jDesktopPane1.setBackground(new java.awt.Color(51, 51, 51));
javax.swing.GroupLayout jDesktopPane1Layout = new javax.swing.GroupLayout(jDesktopPane1);
jDesktopPane1.setLayout(jDesktopPane1Layout);
jDesktopPane1Layout.setHorizontalGroup(
jDesktopPane1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 0, Short.MAX_VALUE)
);
jDesktopPane1Layout.setVerticalGroup(
jDesktopPane1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 956, Short.MAX_VALUE)
);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jToolBar1, javax.swing.GroupLayout.PREFERRED_SIZE, 686, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel1)
.addComponent(jLabel2)
.addComponent(jLabel3))
.addGap(0, 874, Short.MAX_VALUE))
.addGroup(layout.createSequentialGroup()
.addComponent(jDesktopPane1)
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jToolBar1, javax.swing.GroupLayout.PREFERRED_SIZE, 111, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(layout.createSequentialGroup()
.addGap(14, 14, 14)
.addComponent(jLabel2)
.addGap(18, 18, 18)
.addComponent(jLabel1)
.addGap(18, 18, 18)
.addComponent(jLabel3)))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jDesktopPane1)
.addContainerGap())
);
pack();
}
private void homeActionPerformed(java.awt.event.ActionEvent evt)
{
}
private void homeAncestorRemoved(javax.swing.event.AncestorEvent evt)
{ }
private void homeKeyPressed(java.awt.event.KeyEvent evt)
{ }
private void jobActionPerformed(java.awt.event.ActionEvent evt)
{
job jb=new job();
jDesktopPane1.add(jb);
jb.setVisible(true);
}
private void jobKeyPressed(java.awt.event.KeyEvent evt)
{ }
private void employeeActionPerformed(java.awt.event.ActionEvent evt)
{
employee emp=new employee();
jDesktopPane1.add(emp);
emp.setVisible(true);
}
private void employeeKeyPressed(java.awt.event.KeyEvent evt)
{ }
private void machineActionPerformed(java.awt.event.ActionEvent evt)
{
machine m=new machine();
jDesktopPane1.add(m);
}
private void machineKeyPressed(java.awt.event.KeyEvent evt)
{ }
private void branchActionPerformed(java.awt.event.ActionEvent evt)
{
branch b=new branch();
jDesktopPane1.add(b);
b.setVisible(true);
// TODO add your handling code here:
}
private void branchKeyPressed(java.awt.event.KeyEvent evt)
{
// TODO add your handling code here:
}
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt)
{
User u=new User();
jDesktopPane1.add(u);
u.setVisible(true);
// TODO add your handling code here:
}
private void jButton1KeyPressed(java.awt.event.KeyEvent evt)
{
// TODO add your handling code here:
}
/**
* @param args the command line arguments
*/
public static void main(String args[])
{
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try
{
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels())
{
if ("Nimbus".equals(info.getName()))
{
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
}
catch (ClassNotFoundException ex)
{
java.util.logging.Logger.getLogger(Home_Page.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
catch (InstantiationException ex)
{
java.util.logging.Logger.getLogger(Home_Page.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
catch (IllegalAccessException ex)
{
java.util.logging.Logger.getLogger(Home_Page.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
catch (javax.swing.UnsupportedLookAndFeelException ex)
{
java.util.logging.Logger.getLogger(Home_Page.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
Calendar expiry = Calendar.getInstance();
expiry.set(2013, 9 , 27,0,0); // Expire at 31 Jan 2010
Calendar now = Calendar.getInstance();
java.awt.EventQueue.invokeLater(new Runnable()
{
public void run()
{
// new Home_Page("Admin").setVisible(true);
}
});
}
private javax.swing.JButton branch;
private javax.swing.JButton employee;
private javax.swing.JButton home;
private javax.swing.JButton jButton1;
private javax.swing.JDesktopPane jDesktopPane1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JToolBar jToolBar1;
private javax.swing.JButton job;
private javax.swing.JButton machine;
}
现在发生的事情是当我运行我的java类时，主要的一个，登录表单和Home_Page同时出现。我要做的是，将代码设置为在用户成功登录时自动关闭登录表单。 我尝试的最后一种方法关闭了Home_page和登录表单。 //System.exit(0）;
请尽可能帮助我！非常感谢你提前。