Hibernate 4 升级到 Hibernate 5 的时候 SessionFactory 不能使用

public static SessionFactory initSession() {
		Configuration configuration = new Configuration();
		configuration.configure();
		serviceRegistry = new StandardServiceRegistryBuilder().applySettings(configuration.getProperties()).build();
		sessionFactory = configuration.buildSessionFactory(serviceRegistry);
		return sessionFactory;
	}

public static SessionFactory initSession() {
        Configuration configuration = new Configuration();
        configuration.configure();

        serviceRegistry = new StandardServiceRegistryBuilder().configure().build();
        Metadata metadata = new MetadataSources(serviceRegistry).getMetadataBuilder().build();

        sessionFactory = metadata.getSessionFactoryBuilder().build();
        return sessionFactory;
    }