Configuration configuration = new Configuration();
configuration.configure();
ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder().applySettings(configuration.getProperties()).build();
SessionFactory sessionFactory = configuration.buildSessionFactory(serviceRegistry);
//这种写法无法获取到entity,可能hibernate5适用,4还是用上面的
final StandardServiceRegistry registry = new StandardServiceRegistryBuilder().configure("hibernate.cfg.xml").build();
SessionFactory sessionFactory = new MetadataSources(registry).buildMetadata().buildSessionFactory();