HibernateUtil工具类

/**
 * hibernate 工具类 用来初始化hibernate
 * 
 * @author Home
 *
 */
public class HibernateUtil {

    private static SessionFactory sessionFactory;
    private static Session session;

    static {
        // 创建配置对象 读取hibernate.cfg.xml文件 完成初始化。
        Configuration config = new Configuration().configure();
        // 创建服务注册对象
        ServiceRegistry serviceRegistry = new ServiceRegistryBuilder().applySettings(config.getProperties())
                .buildServiceRegistry();
        // 创建会话工厂对象
        sessionFactory = config.buildSessionFactory(serviceRegistry);
        // 会话对象
        session = sessionFactory.openSession();
    }

    // 获取sessionFactory
    public static SessionFactory getSessionFactory() {
        return sessionFactory;
    }

    // 获取session
    public static Session getSession() {
        return session;
    }

    // 关闭session
    public static void closeSession(Session session) {
        if (session != null) {
            session.close();
        }
    }
}