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package com.hibernate.util;import org.hibernate.Session;import org.hibernate.SessionFactory;import org.hibernate.boot.MetadataSources;import org.hibernate.boot.registry.StandardServiceRegistry;import org.hibernate.boot.registry.StandardServiceRegistryBuilder;/** * 可重用 * @author Aimer * */public class HibernateUtil {   	private static SessionFactory sessionFactory;	/**	 * 静态初始化	 */	static {   		//1.创建ServiceRegistry对象		StandardServiceRegistry registry = new StandardServiceRegistryBuilder()				.configure().build();//读取hibernate.cfg.xml		try {   			//2.创建SessionFactory对象			sessionFactory = new MetadataSources(registry).buildMetadata()					.buildSessionFactory();		} catch (Exception e) {   			e.printStackTrace();			//手动释放StandardServiceRegistry对象			StandardServiceRegistryBuilder.destroy(registry);		}	}	/**	 * 创建Session对象：程序与数据库的一次会话	 */	public static Session OpenSession() {   		return sessionFactory.openSession();	}		/**	 * 关闭SessionFactory	 */	public static void closeSessionFactory() {   		sessionFactory.close();	}}