hibernate错误提示

2016-05-03 09:45:03,275 -- WARN  -- org.hibernate.internal.util.xml.DTDEntityResolver.resolveEntity(DTDEntityResolver.java:75) --

HHH000223: Recognized obsolete hibernate namespace http://hibernate.sourceforge.net/. Use namespace http://www.hibernate.org/dtd/ instead. Refer to Hibernate 3.6 Migration Guide! 

可能是实体映射文件或者配置文件dtd导错了（我的是这个情况，你们的视情况而定）