获取SessionFactory的工具类

package com.zhu.util;import org.hibernate.SessionFactory;import org.hibernate.boot.registry.StandardServiceRegistryBuilder;import org.hibernate.cfg.Configuration;import org.hibernate.service.ServiceRegistry;public class HibernateUtil {private static final SessionFactory sessionFactory=buildSessionFactory();private static SessionFactory buildSessionFactory(){Configuration configuration=new Configuration().configure();   ServiceRegistry serviceRegistry=new StandardServiceRegistryBuilder().applySettings(configuration.getProperties()).build();   SessionFactory sessionFactory=configuration.buildSessionFactory(serviceRegistry);   return sessionFactory;}public static SessionFactory getSessionFactory(){return sessionFactory;}}