Tutorial Java : Membuat Login Form untuk Aplikasi Destop

ActionLogin.java

if (LoginManager.getDefault().login(jTextFieldNamaPengguna.getText(),
        new String(jPasswordFieldKataSandi.getPassword()))) {
    JOptionPane.showMessageDialog(this, "Selamat datang");
    setVisible(false);
} else {
    JOptionPane.showMessageDialog(this, "Maaf, anda bukan pengguna aplikasi ini");
}

App.java

/*
 *  Copyright (c) 2011, StripBandunk and/or its affiliates. All rights reserved.
 * 
 *       http://stripbandunk.com/
 * 
 *  STRIPBANDUNK PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
package com.stripbandunk.formlogin;

import com.stripbandunk.formlogin.form.FormApplication;
import com.stripbandunk.formlogin.form.FormLogin;
import com.stripbandunk.formlogin.helper.HibernateHelper;
import javax.swing.SwingUtilities;

public class App {

    private FormApplication formApplication;

    private FormLogin formLogin;

    public App() {
        formApplication = new FormApplication();
        formLogin = new FormLogin(formApplication, true);
    }

    public void startApp() {
        formLogin.setLocationRelativeTo(formApplication);
        formApplication.setVisible(true);
        formLogin.setVisible(true);
    }

    public static void main(String[] args) {
        // init hibernate
        HibernateHelper.getSessionFactory().openSession().close();

        // jalankan aplikasi
        SwingUtilities.invokeLater(new Runnable() {

            public void run() {
                App app = new App();
                app.startApp();
            }
        });
    }
}

create_database.sql

CREATE DATABASE stripbandunk_formlogin;

HibernateHelper.java

/*
 *  Copyright (c) 2011, StripBandunk and/or its affiliates. All rights reserved.
 * 
 *       http://stripbandunk.com/
 * 
 *  STRIPBANDUNK PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
package com.stripbandunk.formlogin.helper;

import com.stripbandunk.formlogin.entity.Pengguna;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import org.hibernate.dialect.MySQL5InnoDBDialect;

public class HibernateHelper {

    private final static SessionFactory sessionFactory;

    static {
        Configuration configuration = new Configuration();

        // konfigurasi connection
        configuration.setProperty("hibernate.connection.driver_class", "com.mysql.jdbc.Driver");
        configuration.setProperty("hibernate.connection.url", "jdbc:mysql://localhost:3306/stripbandunk_formlogin");
        configuration.setProperty("hibernate.connection.username", "root");
        configuration.setProperty("hibernate.connection.password", "root");

        // konfigurasi hibernate
        configuration.setProperty("hibernate.dialect", MySQL5InnoDBDialect.class.getName());
        configuration.setProperty("hibernate.hbm2ddl.auto", "update");

        // mapping entitas
        configuration.addAnnotatedClass(Pengguna.class);

        // membuat session factory
        sessionFactory = configuration.buildSessionFactory();

        // pastikan di-close saat aplikasi ditutup
        HibernateHelper.registerShutdownHook();
    }

    public static SessionFactory getSessionFactory() {
        return sessionFactory;
    }

    private static void registerShutdownHook() {
        Runtime.getRuntime().addShutdownHook(new Thread(new Runnable() {

            public void run() {
                sessionFactory.close();
            }
        }));
    }
}

insert_pengguna.sql

INSERT INTO 
   tabel_pengguna( nama_pengguna, kata_sandi ) 
VALUES (
   'stripbandunk', ENCODE(  'stripbandunk',  'password' )
)

LoginManager.java

/*
 *  Copyright (c) 2011, StripBandunk and/or its affiliates. All rights reserved.
 * 
 *       http://stripbandunk.com/
 * 
 *  STRIPBANDUNK PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
package com.stripbandunk.formlogin.helper;

import com.stripbandunk.formlogin.entity.Pengguna;
import org.hibernate.Session;

/**
 *
 * @author echo
 */
public class LoginManager {

    private static LoginManager loginManager;

    public static LoginManager getDefault() {
        if (loginManager == null) {
            loginManager = new LoginManager();
        }
        return loginManager;
    }

    private Pengguna pengguna;

    private LoginManager() {
        // singleton class
    }

    public Pengguna getPengguna() {
        return pengguna;
    }

    public void logout() {
        this.pengguna = null;
    }

    public boolean login(String namaPengguna, String kataSandi) {
        Session session = HibernateHelper.getSessionFactory().openSession();
        Pengguna db = (Pengguna) session.get(Pengguna.class, namaPengguna);
        session.close();

        if (db == null) {
            return false;
        } else if (!db.getKataSandi().equals(kataSandi)) {
            return false;
        } else {
            this.pengguna = db;
            return true;
        }
    }
}

Pengguna.java

/*
 *  Copyright (c) 2011, StripBandunk and/or its affiliates. All rights reserved.
 * 
 *       http://stripbandunk.com/
 * 
 *  STRIPBANDUNK PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
package com.stripbandunk.formlogin.entity;

import java.io.Serializable;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
import org.hibernate.annotations.ColumnTransformer;

@Entity
@Table(name = "tabel_pengguna")
public class Pengguna implements Serializable {

    @Id
    @Column(name = "nama_pengguna")
    private String namaPengguna;

    // ubah kata password menjadi kata yang rahasia menurut Anda
    @ColumnTransformer(read = "decode(kata_sandi, 'password')", write = "encode(?, 'password')")
    @Column(name = "kata_sandi")
    private String kataSandi;

    // getter dan setter
}

pom.xml

<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-core</artifactId>
    <version>3.6.7.Final</version>
</dependency>
<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-jdk14</artifactId>
    <version>1.6.1</version>
</dependency>
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>5.1.17</version>
</dependency>
<dependency>
    <groupId>javassist</groupId>
    <artifactId>javassist</artifactId>
    <version>3.12.1.GA</version>
</dependency>