关于hibernate4.3.6获取sessionfactory的一个错误：Access to DialectResolutionInfo cannot be null when 'hibernate

在官方文档http://docs.jboss.org/hibernate/orm/4.3/manual/en-US/html/ch01.html#tutorial-firstapp-configuration中

获取SessionFacory

方法会报错如下：

Exception in thread "main" org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set
at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.determineDialect(DialectFactoryImpl.java:104)
at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:71)
at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:209)
at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:111)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:234)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:206)
at org.hibernate.cfg.Configuration.buildTypeRegistrations(Configuration.java:1885)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1843)

at StudentTest.main(StudentTest.java:30)

如下设置即可正常运行：

  

hibernate3 与 hibernate4有所不同，这应该是官方文档的一个BUG​。