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nigel.stanger
/
COMP101_JDBC_demo
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Properly handled failed Oracle login
master
1 parent
1144f61
commit
5cf8c4cc09bd5d225aa7eb547979e9ab256f083d
Nigel Stanger
authored
on 17 Apr 2020
Patch
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1 changed file
src/main/java/ui/LoginDialog.java
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src/main/java/ui/LoginDialog.java
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package ui; import data.DbConnectionException; import data.DbLoginException; import java.awt.event.KeyEvent; import java.sql.SQLException; import java.util.logging.Level; import java.util.logging.Logger; import javax.swing.JComponent; import javax.swing.JOptionPane; import javax.swing.KeyStroke; /** * * @author gdick */ public class LoginDialog extends javax.swing.JDialog { /** * Creates new form LoginDialog */ public LoginDialog(java.awt.Frame parent, boolean modal) { super(parent, modal); initComponents(); setLocationRelativeTo(parent); getRootPane().setDefaultButton(buttonLogin); getRootPane().registerKeyboardAction(e -> { System.exit(0); }, KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0), JComponent.WHEN_IN_FOCUSED_WINDOW); } /** * This method is called from within the constructor to initialize the form. * WARNING: Do NOT modify this code. The content of this method is always * regenerated by the Form Editor. */ @SuppressWarnings("unchecked") // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents private void initComponents() { labelUsername = new javax.swing.JLabel(); textUsername = new javax.swing.JTextField(); labelPassword = new javax.swing.JLabel(); password = new javax.swing.JPasswordField(); buttonLogin = new javax.swing.JButton(); buttonCancel = new javax.swing.JButton(); setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE); setTitle("Log Into Oracle ..."); labelUsername.setText("User Name:"); labelPassword.setText("Password:"); buttonLogin.setText("Login"); buttonLogin.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { buttonLoginActionPerformed(evt); } }); buttonCancel.setText("Cancel"); buttonCancel.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { buttonCancelActionPerformed(evt); } }); javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); getContentPane().setLayout(layout); layout.setHorizontalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addContainerGap() .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING) .addGroup(layout.createSequentialGroup() .addComponent(buttonCancel, javax.swing.GroupLayout.PREFERRED_SIZE, 75, javax.swing.GroupLayout.PREFERRED_SIZE) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(buttonLogin, javax.swing.GroupLayout.PREFERRED_SIZE, 75, javax.swing.GroupLayout.PREFERRED_SIZE)) .addGroup(layout.createSequentialGroup() .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING) .addComponent(labelUsername) .addComponent(labelPassword)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false) .addComponent(password, javax.swing.GroupLayout.DEFAULT_SIZE, 250, Short.MAX_VALUE) .addComponent(textUsername)))) .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)) ); layout.setVerticalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addContainerGap() .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(textUsername, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(labelUsername)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(password, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(labelPassword)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(buttonLogin) .addComponent(buttonCancel)) .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)) ); pack(); }// </editor-fold>//GEN-END:initComponents private void buttonCancelActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_buttonCancelActionPerformed System.exit(0); }//GEN-LAST:event_buttonCancelActionPerformed private void buttonLoginActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_buttonLoginActionPerformed try { data.DatabaseUtilities.checkLogin(textUsername.getText(), password.getPassword()); dispose(); } catch (DbConnectionException | DbLoginException ex) { Logger.getLogger(LoginDialog.class.getName()).log(Level.SEVERE, null, ex); JOptionPane.showMessageDialog(this, "Login failed: " + ex.getLocalizedMessage()); } }//GEN-LAST:event_buttonLoginActionPerformed // Variables declaration - do not modify//GEN-BEGIN:variables private javax.swing.JButton buttonCancel; private javax.swing.JButton buttonLogin; private javax.swing.JLabel labelPassword; private javax.swing.JLabel labelUsername; private javax.swing.JPasswordField password; private javax.swing.JTextField textUsername; // End of variables declaration//GEN-END:variables }
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package ui; import data.DbLoginException; import java.awt.event.KeyEvent; import java.sql.SQLException; import java.util.logging.Level; import java.util.logging.Logger; import javax.swing.JComponent; import javax.swing.JOptionPane; import javax.swing.KeyStroke; /** * * @author gdick */ public class LoginDialog extends javax.swing.JDialog { /** * Creates new form LoginDialog */ public LoginDialog(java.awt.Frame parent, boolean modal) { super(parent, modal); initComponents(); setLocationRelativeTo(parent); getRootPane().setDefaultButton(buttonLogin); getRootPane().registerKeyboardAction(e -> { System.exit(0); }, KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0), JComponent.WHEN_IN_FOCUSED_WINDOW); } /** * This method is called from within the constructor to initialize the form. * WARNING: Do NOT modify this code. The content of this method is always * regenerated by the Form Editor. */ @SuppressWarnings("unchecked") // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents private void initComponents() { labelUsername = new javax.swing.JLabel(); textUsername = new javax.swing.JTextField(); labelPassword = new javax.swing.JLabel(); password = new javax.swing.JPasswordField(); buttonLogin = new javax.swing.JButton(); buttonCancel = new javax.swing.JButton(); setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE); setTitle("Log Into Oracle ..."); labelUsername.setText("User Name:"); labelPassword.setText("Password:"); buttonLogin.setText("Login"); buttonLogin.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { buttonLoginActionPerformed(evt); } }); buttonCancel.setText("Cancel"); buttonCancel.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { buttonCancelActionPerformed(evt); } }); javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); getContentPane().setLayout(layout); layout.setHorizontalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addContainerGap() .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING) .addGroup(layout.createSequentialGroup() .addComponent(buttonCancel, javax.swing.GroupLayout.PREFERRED_SIZE, 75, javax.swing.GroupLayout.PREFERRED_SIZE) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(buttonLogin, javax.swing.GroupLayout.PREFERRED_SIZE, 75, javax.swing.GroupLayout.PREFERRED_SIZE)) .addGroup(layout.createSequentialGroup() .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING) .addComponent(labelUsername) .addComponent(labelPassword)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false) .addComponent(password, javax.swing.GroupLayout.DEFAULT_SIZE, 250, Short.MAX_VALUE) .addComponent(textUsername)))) .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)) ); layout.setVerticalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addContainerGap() .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(textUsername, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(labelUsername)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(password, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(labelPassword)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(buttonLogin) .addComponent(buttonCancel)) .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)) ); pack(); }// </editor-fold>//GEN-END:initComponents private void buttonCancelActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_buttonCancelActionPerformed System.exit(0); }//GEN-LAST:event_buttonCancelActionPerformed private void buttonLoginActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_buttonLoginActionPerformed try { data.DatabaseUtilities.checkLogin(textUsername.getText(), password.getPassword()); dispose(); } catch (DbLoginException ex) { Logger.getLogger(LoginDialog.class.getName()).log(Level.SEVERE, null, ex); JOptionPane.showMessageDialog(this, "Login failed: " + ex.getLocalizedMessage()); } }//GEN-LAST:event_buttonLoginActionPerformed // Variables declaration - do not modify//GEN-BEGIN:variables private javax.swing.JButton buttonCancel; private javax.swing.JButton buttonLogin; private javax.swing.JLabel labelPassword; private javax.swing.JLabel labelUsername; private javax.swing.JPasswordField password; private javax.swing.JTextField textUsername; // End of variables declaration//GEN-END:variables }
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