Hibernate Dialect must be explicitly set解决方案一

?? ? ? ?用以下这种方式获得SessionFactory工厂

?? ? ? ?public static SessionFactory factory = null;

static{try {Configuration config = new Configuration();factory = config.configure().buildSessionFactory();} catch (Throwable e) {e.printStackTrace();System.err.println("Hibernate的配置文件不正确");                        new ExceptionInInitializerError(e);}}

?

?? 出现Hibernate Dialect must be explicitly set的原因是由于在上面代码部分你写成以下

?? ?factory = config.configure().buildSessionFactory();