Quando tento checar se a senha que eu pus esta igual a cadastrada no banco de dados, da este erro. Estou tentando fazer um cadastro de clientes. Essa é a parte do login.
Segue meu código:
package br.com.infox.icones.telas;
import java.awt.BorderLayout;
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JTextField;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.JPasswordField;
import java.sql.*;
import br.com.infox.icones.telas.dal.ModelConexao;
public class TelaLogin extends JFrame {
Connection conexao = null;
PreparedStatement pst = null;
ResultSet rs = null;
public void logar() {
String sql = "select * from tbusuario where login =? and senha =?";
try {
pst = conexao.prepareStatement(sql);
pst.setString(1, txtUsuario.getText());
pst.setString(2, txtSenha.getText());
rs= pst.executeQuery();
if (rs.next()) {
TelaPrincipal principal = new TelaPrincipal();
principal.setVisible(true);
}else {
JOptionPane.showMessageDialog(null, "usuario e/senha invalido");
}
} catch (Exception e) {
JOptionPane.showMessageDialog(null, e);
}
}
private JPanel contentPane;
private JTextField txtUsuario;
private JPasswordField txtSenha;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
TelaLogin frame = new TelaLogin();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public TelaLogin() {
setAlwaysOnTop(true);
setResizable(false);
setTitle("Xsystem");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
JLabel lblNewLabel = new JLabel("Usuario");
lblNewLabel.setBounds(25, 48, 46, 14);
contentPane.add(lblNewLabel);
JLabel lblNewLabel_1 = new JLabel("Senha");
lblNewLabel_1.setBounds(25, 94, 46, 14);
contentPane.add(lblNewLabel_1);
txtUsuario = new JTextField();
txtUsuario.setBounds(100, 45, 86, 20);
contentPane.add(txtUsuario);
txtUsuario.setColumns(10);
JButton btnLogin = new JButton("Login");
btnLogin.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
logar();
}
});
btnLogin.setBounds(62, 156, 89, 23);
contentPane.add(btnLogin);
txtSenha = new JPasswordField();
txtSenha.setBounds(100, 91, 86, 20);
contentPane.add(txtSenha);
}
}