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| package gestionst;
import java.awt.BorderLayout;
import java.awt.EventQueue;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.border.EmptyBorder;
import java.awt.Label;
import java.awt.Font;
import java.awt.TextField;
import java.sql.Connection;
import java.sql.PreparedStatement;
import javax.swing.JPasswordField;
import java.awt.Panel;
import java.awt.Button;
import javax.swing.JLabel;
import com.jgoodies.forms.factories.DefaultComponentFactory;
//import com.mysql.jdbc.Connection;
//import com.mysql.jdbc.PreparedStatement;
import javax.swing.ImageIcon;
import javax.swing.SwingConstants;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JTextPane;
import javax.swing.JButton;
import java.awt.Color;
public class FormLogin extends JFrame {
private JPanel contentPane;
private JPasswordField passwordField;
private JLabel bl_U;
private JLabel bl_P;
private JComponent lbl_U;
private JComponent lbl_P;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
FormLogin frame = new FormLogin();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* *Create the application
* @return
*/
public FormLogin(){
initialize();
}
/*
* Initialise the content of jframe
*/
private void initialize() {
// TODO Auto-generated method stub
JFrame frame = new JFrame();
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 1000, 580);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
TextField textFUsermane = new TextField();
textFUsermane.setBounds(490, 207, 239, 33);
contentPane.add(textFUsermane);
JButton btnCancel = new JButton("Cancel");
btnCancel.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
});
btnCancel.setIcon(new ImageIcon(FormLogin.class.getResource("/images/login.png")));
btnCancel.setFont(new Font("Tahoma", Font.PLAIN, 18));
btnCancel.setBounds(255, 368, 134, 43);
contentPane.add(btnCancel);
JButton btnLogin = new JButton("Login");
btnLogin.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
bl_U.setVisible(false);
bl_P.setVisible(false);
System.out.println("btn..");
if(textFUsermane.getText().equals(""))
{
bl_U.setVisible(true);
}
else if(String.valueOf(passwordField.getPassword()).equals("")){
bl_P.setVisible(true);
}
else{
System.out.println("connect..");
Connection con= MyConnection.getConnection();
PreparedStatement ps = null;
ResultSet rs;
String query="SELECT * From user WHERE username=? and password=?";
try {
ps.setString(1, textFUsermane.getText());
ps.setString(2, String.valueOf(passwordField.getPassword()));
rs=ps.executeQuery();
if(rs.next())
{
MainForm mf = new MainForm();
mf.setVisible(true);
mf.pack();
mf.setLocationRelativeTo(null);
/* close the current form */
this.dispose();
}else{
JOptionPane.showMessageDialog(null, "username/password invalid connection erroné");
}
}catch (SQLException ex){
Logger.getLogger(FormLogin.class.getName()).log(Level.SEVERE, null, ex);
System.out.println("err : "+ex);
}
}
}
private void dispose() {
// TODO Auto-generated method stub
}
});
btnLogin.setIcon(new ImageIcon(FormLogin.class.getResource("/images/exit.jpg")));
btnLogin.setFont(new Font("Tahoma", Font.PLAIN, 18));
btnLogin.setBounds(607, 368, 134, 43);
contentPane.add(btnLogin);
JLabel lblUsername = DefaultComponentFactory.getInstance().createTitle("USERNAME :");
lblUsername.setFont(new Font("Tahoma", Font.BOLD, 18));
lblUsername.setBounds(255, 207, 149, 38);
contentPane.add(lblUsername);
JLabel lbl_P = DefaultComponentFactory.getInstance().createTitle("*");
lbl_P.setForeground(Color.RED);
lbl_P.setFont(new Font("Tahoma", Font.BOLD, 18));
lbl_P.setBounds(751, 243, 45, 30);
contentPane.add(lbl_P);
JLabel lblPassword = DefaultComponentFactory.getInstance().createTitle("PASSWORD :");
lblPassword.setFont(new Font("Tahoma", Font.BOLD, 18));
lblPassword.setBounds(255, 256, 134, 26);
contentPane.add(lblPassword);
passwordField = new JPasswordField();
passwordField.setBounds(490, 246, 239, 30);
contentPane.add(passwordField);
JLabel lbl_U = DefaultComponentFactory.getInstance().createTitle("*");
lbl_U.setForeground(Color.RED);
lbl_U.setFont(new Font("Tahoma", Font.BOLD, 18));
lbl_U.setBounds(751, 215, 32, 22);
contentPane.add(lbl_U);
JLabel lblTitle = DefaultComponentFactory.getInstance().createTitle("AFIP Bookseller");
lblTitle.setFont(new Font("Tahoma", Font.BOLD, 35));
lblTitle.setIcon(new ImageIcon(FormLogin.class.getResource("/images/afip.jpg")));
lblTitle.setBounds(356, 38, 457, 90);
contentPane.add(lblTitle);
JLabel lblArrierrePlan = DefaultComponentFactory.getInstance().createTitle("");
lblArrierrePlan.setForeground(Color.RED);
lblArrierrePlan.setIcon(new ImageIcon(FormLogin.class.getResource("/images/arriere-plan .jpg")));
lblArrierrePlan.setBounds(-11, 0, 1118, 612);
contentPane.add(lblArrierrePlan);
}
} |
NullPointerException lors du clic sur un JButton
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