将Tomcat 6移植到7：出现问题
我尝试在Tomcat 7服务器上部署我的Tomcat 6 webapp，但遇到以下问题，如果我向web.xml添加元素，则会出现此问题：
java.lang.NoSuchMethodException: org.apache.catalina.deploy.WebXml addFilter at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2687) at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2713) at org.apache.tomcat.util.digester.Digester.endElement(Digester.java:1060) at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:601) at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(XMLDocumentFragmentScannerImpl.java:1782) at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2938) at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648) at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:511) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:808) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737) at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:119) at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205) at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522) at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1543) at org.apache.catalina.startup.ContextConfig.parseWebXml(ContextConfig.java:1694) at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1209) at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:882) at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:317) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:89) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5081) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1033) at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:774) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1033) at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:291) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) at org.apache.catalina.core.StandardService.startInternal(StandardService.java:443) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:727) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) at org.apache.catalina.startup.Catalina.start(Catalina.java:620) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:303) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:431) Caused by: java.lang.NoSuchMethodException: org.apache.catalina.deploy.WebXml addFilter at org.apache.tomcat.util.IntrospectionUtils.callMethod1(IntrospectionUtils.java:802) at org.apache.tomcat.util.digester.SetNextRule.end(SetNextRule.java:201) at org.apache.tomcat.util.digester.Digester.endElement(Digester.java:1057) ... 36 more Tomcat 7中的“过滤符号”是否有变化？ 我无法摆脱这个问题。
我能够解决问题（突然的灵感）：无论出于何种原因，Maven都添加了catalina-5。*。lib作为依赖，这当然是错误的。 删除此lib时，一切正常。