hibernate 加载 jdbc驱动出错Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set
Exception in thread "main" org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when ‘hibernate.dialect‘ not set
程序基本没动过，以前用的3.3.2的版本，今天换成4.3.4的版本后，改了一下sessionFactory的生成方法，其他的不变，开始还能运行，过了30min左右，就不能运行了！
hibernate4 已经废弃原来的buildSessionFactory 用下面的就没问题了
Configuration cfg = new Configuration().configure();
StandardServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder()
.applySettings(cfg.getProperties()).build();
SessionFactory sessionFactory = cfg.buildSessionFactory(serviceRegistry);
Configuration cfg = new Configuration().configure();
StandardServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder()
.applySettings(cfg.getProperties()).build();
SessionFactory sessionFactory = cfg.buildSessionFactory(serviceRegistry);
文章来自：http://www.cnblogs.com/homer3000/p/e5dc3ec58a30293ab72664cbcf8661a1.html