StandardServiceRegistryBuilder cannot be resolved to a type

應該是版本問題，我也出現這樣的問題（以下是我改正的代碼，可以正常運行）

@Test
?? ?public void testSchemaExport(){
?? ??? ?//創建配置對象
?? ??? ?Configuration config=new Configuration().configure();
?? ??? ?//創建服務注冊對象
?? ??? ?ServiceRegistry serviceRegistry = (ServiceRegistry) new StandardServiceRegistryBuilder().configure().build();
?? ??? ?//創建sessionFactory
?? ??? ?SessionFactory sessionFactory=config.buildSessionFactory(serviceRegistry);
?? ??? ?//創建session
?? ??? ?Session session=sessionFactory.getCurrentSession();
?? ??? ?
?? ??? ?MetadataImplementor metadataImplementor = (MetadataImplementor) new ????????????????????? MetadataSources(serviceRegistry).buildMetadata();
?? ??? ?SchemaExport export = new SchemaExport(serviceRegistry,?? ?metadataImplementor);
?? ??? ?export.create(true, true);//第一個true表示生成表結構，第二個true表示輸出sql語句
?? ?}