启动tomcat总是在启动的日志里出现这三行警报,百度也搜不到，请求大家帮助！~

[weixin_38054276]

2015-11-23 13:04:10,365 WARN [org.hibernate.internal.util.xml.DTDEntityResolver] - HHH000223: Recognized obsolete hibernate namespace http://hibernate.sourceforge.net/. Use namespace http://www.hibernate.org/dtd/ instead. Refer to Hibernate 3.6 Migration Guide! 2015-11-23 13:04:11,665 WARN [org.hibernate.cache.ehcache.AbstractEhcacheRegionFactory] - HHH020003: Could not find a specific ehcache configuration for cache named [org.hibernate.cache.spi.UpdateTimestampsCache]; using defaults. 2015-11-23 13:04:11,674 WARN [org.hibernate.cache.ehcache.AbstractEhcacheRegionFactory] - HHH020003: Could not find a specific ehcache configuration for cache named [org.hibernate.cache.internal.StandardQueryCache]; using defaults.