Tomacat7启动报错-org.apache.catalina.deploy.WebXml addFilter

java.lang.NoSuchMethodException: org.apache.catalina.deploy.WebXml addFilter
 at org.apache.tomcat.util.IntrospectionUtils.callMethod1(IntrospectionUtils.java:)
 at org.apache.tomcat.util.digester.SetNextRule.end(SetNextRule.java:)
 at org.apache.tomcat.util.digester.Digester.endElement(Digester.java:)
 at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:)
 at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(XMLDocumentFragmentScannerImpl.java:)
 at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:)
 at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:)
 at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:)
 at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:)
 at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:)
 at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:)
 at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:)
 at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:)
 at org.apache.tomcat.util.digester.Digester.parse(Digester.java:)
 at org.apache.catalina.startup.ContextConfig.parseWebXml(ContextConfig.java:)
 at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:)
 at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:)
 at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:)
 at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:)
 at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:)
 at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:)
 at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:)
 at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:)
 at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:)
 at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:)
 at java.util.concurrent.FutureTask.run(FutureTask.java:)
 at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:)
 at java.lang.Thread.run(Thread.java:)
org.apache.catalina.startup.ContextConfig parseWebXml

解决办法：

在Tomacat7的context.xml文件里的<Context>中加上<Loader delegate="true" />