weblogic 的升级问题！（web.xml的问题）

minasi

最近升级的weblogic，从6。1到8.1，但之后在启动weblogic的时候，提示如下错误：<Aug 10, 2004 3:56:47 PM CST>; <Warning>; <HTTP>; <BEA-101248>; <[null]: Deployment descriptor "web.xml" is malformed. Check against the DTD: org.xml.sax.SAXParseException: The content of element type "web-app" must match "(icon?,display-name?,description?,distributable?,context-param*,filter*,filter-mapping*,listener*,servlet*,servlet-mapping*,session-config?,mime-mapping*,welcome-file-list?,error-page*,taglib*,resource-env-ref*,resource-ref*,security-constraint*,login-config?,security-role*,env-entry*,ejb-ref*)". (line 21, column 11).>;


如何解决，望高手指点！