由于项目中使用的是hibernate 4.35版本和sqlserver 2008数据库。所以，自定义方言时，需要和老版本做区别：
public class MySQLServerDialect extends SQLServerDialect {
public MySQLServerDialect()
{
super();
registerHibernateType(1, "string");
registerHibernateType(-9, "string");
registerHibernateType(-16, "string");
registerHibernateType(3, "double");
registerHibernateType(Types.CHAR, StandardBasicTypes.STRING.getName());
registerHibernateType(Types.NVARCHAR, StandardBasicTypes.STRING.getName());
registerHibernateType(Types.LONGNVARCHAR, StandardBasicTypes.STRING.getName());
registerHibernateType(Types.DECIMAL, StandardBasicTypes.DOUBLE.getName());
}
}
然后注意修改hibernate 配置。本项目是将hibernate托管于spring,
<property name="hibernateProperties">
<props>
<prop key="hibernate.show_sql">true</prop>
<prop key="current_session_context_class">thread</prop>
<!-- <prop key="hibernate.dialect">org.hibernate.dialect.SQLServerDialect</prop> -->
<prop key="hibernate.dialect">manage.myextends.sqlserver.MySQLServerDialect</prop> </props>
</property>