struts2 如何在tomcat启动时的信息屏蔽

struts2 如何在tomcat启动时的信息屏蔽一启动tomcat时一大堆地没用的东西出来了
14:00:24.343 [main] DEBUG org.apache.commons.digester.Digester -   New match='web-app/mime-mapping/mime-type'
14:00:24.343 [main] DEBUG org.apache.commons.digester.Digester -   Fire begin() for CallParamRule[paramIndex=1, attributeName=null, from stack=false]
14:00:24.343 [main] DEBUG o.a.commons.digester.Digester.sax - characters(text/vnd.wap.wmlscript)
14:00:24.343 [main] DEBUG o.a.commons.digester.Digester.sax - endElement(,,mime-type)
14:00:24.343 [main] DEBUG org.apache.commons.digester.Digester -   match='web-app/mime-mapping/mime-type'
14:00:24.343 [main] DEBUG org.apache.commons.digester.Digester -   bodyText='text/vnd.wap.wmlscript'
14:00:24.343 [main] DEBUG org.apache.commons.digester.Digester -   Fire body() for CallParamRule[paramIndex=1, attributeName=null, from stack=false]
14:00:24.343 [main] DEBUG org.apache.commons.digester.Digester -   Popping body text '这些东西的..
不知道在哪里配置把这些东西不显示出来..