java.lang.NoSuchMethodException: org.apache.catalina.deploy.WebXml addServlet

測試tomcat的comet

java.lang.NoSuchMethodException: org.apache.catalina.deploy.WebXml addServlet 異常

因為工程中用到tomcat的catalina.jar，被部署到tomcat中時，這個包也跟著部署進去了，部署報異常

2012-7-27 11:44:05 org.apache.catalina.startup.ContextConfig parseWebXml
嚴重: Parse error in application web.xml file at jndi:/localhost/tomcat-comet/WEB-INF/web.xml
java.lang.NoSuchMethodException: org.apache.catalina.deploy.WebXml addServlet
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:1774)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2930)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:807)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:107)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$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.startup.HostConfig.checkResources(HostConfig.java:1279)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1360)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:294)
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.ContainerBase.backgroundProcess(ContainerBase.java:1233)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1391)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1401)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1380)
at java.lang.Thread.run(Thread.java:619)

開始以為是web.xml檔案寫錯了，檢查了沒問題，後來搜尋才發現是包衝突

修改包的部署配置

右鍵project-> Properties-> myeclipse-> web -> deployment 修改 Lib...Policies
取消 default取消 jars from build path

(只勾選下面三個)