为什么web.xml错误

Question

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.4" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee   http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">  <!-- Standard Action Servlet Configuraction -->
  <servlet>
   <servlet-name>action</servlet-name>
   <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
  
   <init-param>
  <param-name>config</param-name> 
   <param-value>/WEB-INF/struts-config.xml</param-value>
   </init-param>
   <load-on-startup>2</load-on-startup>
  </servlet>
  
  <!-- Standard Action Servlet Mapping -->
  <servlet-mapping>
   <servlet-name>action</servlet-name>
   <url-pattern>*.do</url-pattern>
  </servlet-mapping>
  
  <!-- The Usual Welcome File List -->
  <welcome-file-list>
   <welcome-file>hello.jsp</welcome-file>
  </welcome-file-list>
  
  <!-- Struts Tag Library Descriptors -->
   <taglib>
   <taglib-url>/WEB-INF/tld/struts-bean.tld</taglib-url>
<taglib-location>/WEB-INF/struts-bean.tld</taglib-location>
   </taglib>
  
  <taglib>
   <taglib-url>/WEB-INF/tld/struts-html.tld</taglib-url>
<taglib-location>/WEB-INF/struts-html.tld</taglib-location>
  </taglib>
  
   <taglib>
   <taglib-url>/WEB-INF/tld/struts-logic.tld</taglib-url>
   <taglib-location>/WEB-INF/struts-logic.tld</taglib-location>
   </taglib>
</web-app>
提示这里错误
   <taglib>
   <taglib-url>/WEB-INF/tld/struts-bean.tld</taglib-url>
<taglib-location>/WEB-INF/struts-bean.tld</taglib-location>
   </taglib>java.lang.IllegalArgumentException: Can't convert argument: null
at org.apache.tomcat.util.IntrospectionUtils.convert(IntrospectionUtils.java:975)
at org.apache.tomcat.util.digester.CallMethodRule.end(CallMethodRule.java:522)
at org.apache.tomcat.util.digester.Rule.end(Rule.java:228)
at org.apache.tomcat.util.digester.Digester.endElement(Digester.java:1057)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:633)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(XMLDocumentFragmentScannerImpl.java:1241)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(XMLDocumentFragmentScannerImpl.java:1685)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:368)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:834)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:764)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:148)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1242)
at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1561)
at org.apache.catalina.startup.ContextConfig.applicationWebConfig(ContextConfig.java:351)
at org.apache.catalina.startup.ContextConfig.start(ContextConfig.java:1041)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:260)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4143)
at org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1089)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1187)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:292)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1305)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1569)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1578)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1558)
at java.lang.Thread.run(Thread.java:595)
2007-3-15 15:31:22 org.apache.catalina.startup.ContextConfig applicationWebConfig
严重: Parse error in application web.xml file at jndi:/localhost/lcWeb/WEB-INF/web.xml
java.lang.IllegalArgumentException: Can't convert argument: null
at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2725)
at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2751)
at org.apache.tomcat.util.digester.Digester.endElement(Digester.java:1060)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:633)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(XMLDocumentFragmentScannerImpl.java:1241)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(XMLDocumentFragmentScannerImpl.java:1685)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:368)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:834)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:764)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:148)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1242)
at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1561)
at org.apache.catalina.startup.ContextConfig.applicationWebConfig(ContextConfig.java:351)
at org.apache.catalina.startup.ContextConfig.start(ContextConfig.java:1041)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:260)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4143)
at org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1089)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1187)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:292)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1305)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1569)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1578)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1558)
at java.lang.Thread.run(Thread.java:595)
2007-3-15 15:31:22 org.apache.catalina.startup.ContextConfig applicationWebConfig
严重: Occurred at line 31 column 13
2007-3-15 15:31:22 org.apache.catalina.startup.ContextConfig start
严重: Marking this application unavailable due to previous error(s)
2007-3-15 15:31:22 org.apache.catalina.core.StandardContext start
严重: Error getConfigured
2007-3-15 15:31:22 org.apache.catalina.core.StandardContext start
严重: Context [/lcWeb] startup failed due to previous errors

Answer 1

你应该把<!-- The Usual Welcome File List -->
  <welcome-file-list>
   <welcome-file>hello.jsp</welcome-file>
  </welcome-file-list>
放到
所有的<taglib></taglib>节点下面

Answer 2

在servlet2.4版本中taglib标签应该在<jsp-config>之中吧<jsp-config>
   <taglib>
   <taglib-url>/WEB-INF/tld/struts-bean.tld</taglib-url>
<taglib-location>/WEB-INF/struts-bean.tld</taglib-location>
   </taglib>
   <taglib>
          ..................
   </taglib>
</jsp-config>

Answer 3

<taglib>
   <taglib-url>/WEB-INF/tld/struts-bean.tld</taglib-url>
<taglib-location>/WEB-INF/tld/struts-bean.tld</taglib-location>
   </taglib>
还是这里错误
 有没有哪位大虾帮帮我啊。

Answer 4

arming21(阿明) 
我试了。。
    还是没用。。
     而且错误更多。

Answer 5

刚才打错了，是<taglib-uri>不是<taglib-url>
<jsp-config>
   <taglib>
   <taglib-uri>/WEB-INF/tld/struts-bean.tld</taglib-url>
<taglib-location>/WEB-INF/struts-bean.tld</taglib-location>
   </taglib>
   <taglib>
          ..................
   </taglib>
</jsp-config>