taglib definition not consistent with specificatio

tomcat6 升級到tomcat7， 出現以下錯誤：

嚴重: Begin event threw exception
java.lang.IllegalArgumentException: taglib definition not consistent with specification version
        at org.apache.catalina.startup.TaglibLocationRule.begin(WebRuleSet.java:1274)
        at org.apache.tomcat.util.digester.Digester.startElement(Digester.java:1282)
        at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:509)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(XMLDocumentFragmentScannerImpl.java:1363)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2786)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:606)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
        at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:848)
        at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777)
        at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
        at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)
        at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:648)
        at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1555)
        at org.apache.catalina.startup.ContextConfig.parseWebXml(ContextConfig.java:1858)
        at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1263)
        at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:889)
        at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:386)
        at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
        at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5479)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1574)
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1564)
        at java.util.concurrent.FutureTask.run(FutureTask.java:262)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:745)

二月 24, 2016 11:56:16 上午 org.apache.catalina.startup.ContextConfig parseWebXml
嚴重: Parse error in application web.xml file at jndi:/localhost/WEB-INF/web.xml
org.xml.sax.SAXParseException; systemId: jndi:/localhost/WEB-INF/web.xml; lineNumber: 170; columnNumber: 11; Error at (170, 11) : taglib definition not consistent with specification version
        at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2705)
        at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2737)
        at org.apache.tomcat.util.digester.Digester.startElement(Digester.java:1285)
        at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:509)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(XMLDocumentFragmentScannerImpl.java:1363)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2786)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:606)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
        at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:848)
        at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777)
        at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
        at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)
        at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:648)
        at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1555)
        at org.apache.catalina.startup.ContextConfig.parseWebXml(ContextConfig.java:1858)
        at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1263)
        at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:889)
        at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:386)
        at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
        at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5479)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1574)
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1564)
        at java.util.concurrent.FutureTask.run(FutureTask.java:262)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalArgumentException: taglib definition not consistent with specification version
        at org.apache.catalina.startup.TaglibLocationRule.begin(WebRuleSet.java:1274)
        at org.apache.tomcat.util.digester.Digester.startElement(Digester.java:1282)
        ... 25 more

首先看問題： taglib definition not consistent with specification version也就是說「taglib定義不符合版本規範」

很明顯，問題出在web.xml裏面，看看原來個人定義：

<web-app>

......(省略其它的)

<!-- Struts Tag Library Descriptors -->
<taglib>
   <taglib-uri>http://lightPortal.org/portal</taglib-uri>
   <taglib-location>/WEB-INF/tlds/light.tld</taglib-location>
  </taglib>
  <taglib>
   <taglib-uri>http://java.sun.com/portlet</taglib-uri>
   <taglib-location>/WEB-INF/tlds/portlet.tld</taglib-location>
  </taglib>

</web-app>

問題就出在這裏，這個在tomcat6是沒問題的，但在tomcat7裏面就會報錯了，查資料證明tomcat7裏面定義規範爲：

<web-app>

<!-- Struts Tag Library Descriptors -->
<jsp-config>
<taglib>
   <taglib-uri>http://lightPortal.org/portal</taglib-uri>
   <taglib-location>/WEB-INF/tlds/light.tld</taglib-location>
  </taglib>
  <taglib>
   <taglib-uri>http://java.sun.com/portlet</taglib-uri>
   <taglib-location>/WEB-INF/tlds/portlet.tld</taglib-location>
  </taglib>

</jsp-config>
</web-app>

改爲上面的個時候，就OK了！！

解決方案：