login.java

java写的地址薄小程序

/*
 * Login.java
 *
 * Created on 2007年12月20日, 下午10:13
 */
package com.sxy.frame;

import com.sxy.database.*;
import javax.swing.JOptionPane;

/**
 *
 * @author  Arthur
 */
public class Login extends javax.swing.JFrame {

    /** Creates new form Login */
    public Login() {
        initComponents();
    }

    /** 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.
     */
    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
    private void initComponents() {

        jPanel1 = new javax.swing.JPanel();
        jLabel1 = new javax.swing.JLabel();
        username = new javax.swing.JTextField();
        jPanel2 = new javax.swing.JPanel();
        jLabel2 = new javax.swing.JLabel();
        password = new javax.swing.JPasswordField();
        jPanel3 = new javax.swing.JPanel();
        check = new javax.swing.JButton();
        jButton2 = new javax.swing.JButton();
        jButton3 = new javax.swing.JButton();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("请登录！");
        setAlwaysOnTop(true);
        setLocationByPlatform(true);
        setResizable(false);
        getContentPane().setLayout(new java.awt.FlowLayout());

        jLabel1.setText("用户名：");
        jPanel1.add(jLabel1);

        username.setColumns(20);
        username.addKeyListener(new java.awt.event.KeyAdapter() {
            public void keyPressed(java.awt.event.KeyEvent evt) {
                usernameKeyPressed(evt);
            }
        });
        jPanel1.add(username);

        getContentPane().add(jPanel1);

        jLabel2.setText("密  码： ");
        jPanel2.add(jLabel2);

        password.setColumns(20);
        password.addKeyListener(new java.awt.event.KeyAdapter() {
            public void keyPressed(java.awt.event.KeyEvent evt) {
                passwordKeyPressed(evt);
            }
        });
        jPanel2.add(password);

        getContentPane().add(jPanel2);

        check.setText("确定");
        check.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                checkActionPerformed(evt);
            }
        });
        check.addKeyListener(new java.awt.event.KeyAdapter() {
            public void keyPressed(java.awt.event.KeyEvent evt) {
                checkKeyPressed(evt);
            }
        });
        jPanel3.add(check);

        jButton2.setText("注册");
        jButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton2ActionPerformed(evt);
            }
        });
        jPanel3.add(jButton2);

        jButton3.setText("重填");
        jButton3.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton3ActionPerformed(evt);
            }
        });
        jPanel3.add(jButton3);

        getContentPane().add(jPanel3);

        java.awt.Dimension screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
        setBounds((screenSize.width-300)/2, (screenSize.height-150)/2, 300, 150);
    }// </editor-fold>//GEN-END:initComponents
    private void checkActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_checkActionPerformed
        log();

    // TODO add your handling code here:
}//GEN-LAST:event_checkActionPerformed

    public void log() {
        DabaCon con = new DabaCon();
        con.condata();
        String name = username.getText();
        String pass = new String(password.getPassword());

        boolean flag = con.login(name, pass);
        con.close();
        if (!name.equals("") && !pass.equals("")) {
            if (flag) {
                AddBookMain book = new AddBookMain(name);
                book.setVisible(true);
                this.dispose();

            } else {
                JOptionPane.showMessageDialog(this, "用户名密码错误！！", "系统提示", JOptionPane.ERROR_MESSAGE);
            }
        } else {
            JOptionPane.showMessageDialog(this, "用户名密码不能为空！！", "系统提示", JOptionPane.ERROR_MESSAGE);
        }
    }

    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton2ActionPerformed

        new register().setVisible(true);
        this.dispose();
    // TODO add your handling code here:
    }//GEN-LAST:event_jButton2ActionPerformed

    private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton3ActionPerformed

        username.setText("");
        password.setText("");

    // TODO add your handling code here:
    }//GEN-LAST:event_jButton3ActionPerformed

    private void usernameKeyPressed(java.awt.event.KeyEvent evt) {//GEN-FIRST:event_usernameKeyPressed
        if (evt.getKeyCode() == java.awt.event.KeyEvent.VK_ENTER) {
            password.grabFocus();
        }
    // TODO add your handling code here:
    }//GEN-LAST:event_usernameKeyPressed

    private void passwordKeyPressed(java.awt.event.KeyEvent evt) {//GEN-FIRST:event_passwordKeyPressed
        if (evt.getKeyCode() == java.awt.event.KeyEvent.VK_ENTER) {
            log();
        }

    // TODO add your handling code here:
    }//GEN-LAST:event_passwordKeyPressed

    private void checkKeyPressed(java.awt.event.KeyEvent evt) {//GEN-FIRST:event_checkKeyPressed
        log();
        // TODO add your handling code here:
    }//GEN-LAST:event_checkKeyPressed
    /**
     * @param args the command line arguments
     */
    /*public static void main(String args[]) {
    java.awt.EventQueue.invokeLater(new Runnable() {
    public void run() {
    try {
    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
    //javax.swing.UIManager.setLookAndFeel("com.birosoft.liquid.LiquidLookAndFeel");
    //PlafOptions.setAsLookAndFeel();
    //javax.swing.UIManager.setLookAndFeel("org.fife.plaf.OfficeXP.OfficeXPLookAndFeel");
    new Login().setVisible(true);
    } catch (Exception ex) {
    Logger.getLogger(Login.class.getName()).log(Level.SEVERE, null, ex);
    }
    }
    });
    }*/
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JButton check;
    private javax.swing.JButton jButton2;
    private javax.swing.JButton jButton3;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JPanel jPanel2;
    private javax.swing.JPanel jPanel3;
    private javax.swing.JPasswordField password;
    private javax.swing.JTextField username;
    // End of variables declaration//GEN-END:variables
}