Hibernate问题之'hibernate.dialect' not set

出现 Connection cannot be null when 'hibernate.dialect' not set，明明就在hibernate.cfg.xml配置了，但是还是提示方言为空，原来，少了一个

hibernate.properties文件，添加之后，又出现一大堆问题。

之前项目不需properties文件，两者的区别就是旧项目用了：

<SPAN style="FONT-SIZE: 18px">SessionFactory sessionFactory = new AnnotationConfiguration().configure().buildSessionFactory();</SPAN>

SessionFactory sessionFactory = new AnnotationConfiguration().configure().buildSessionFactory();

新项目


<SPAN style="FONT-SIZE: 18px">Configuration configuration = new Configuration(); 
ServiceRegistry serviceRegistry = new ServiceRegistryBuilder().applySettings(configuration.getProperties()).buildServiceRegistry(); 
SessionFactory sessionFactory = configuration.buildSessionFactory(serviceRegistry);</SPAN> 

Configuration configuration = new Configuration();
ServiceRegistry serviceRegistry = new ServiceRegistryBuilder().applySettings(configuration.getProperties()).buildServiceRegistry();
SessionFactory sessionFactory = configuration.buildSessionFactory(serviceRegistry);
原来，少了，configuration.configure()方法

没有configure()就会去classpath找hibernate.properties文件，有configure就去找hibernate.cfg.xm

就这么简单，囧！

补充：软件开发 , Java ,