遇到狗血的事情

严重: Exception starting filter struts2

java.lang.ClassNotFoundException: org.apache.Struts2.dispatcher.FilterDispatcher  at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1645)  at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1491)  at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:269)  at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422)  at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115)  at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4001)  at org.apache.catalina.core.StandardContext.start(StandardContext.java:4651)  at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)  at org.apache.catalina.core.StandardHost.start(StandardHost.java:785)  at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)  at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:445)  at org.apache.catalina.core.StandardService.start(StandardService.java:519)  at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)  at org.apache.catalina.startup.Catalina.start(Catalina.java:581)  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)  at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)  at java.lang.reflect.Method.invoke(Unknown Source)  at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)  at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414) 2011-7-20 23:32:20 org.apache.catalina.core.StandardContext start 严重: Error filterStart 2011-7-20 23:32:20 org.apache.catalina.core.StandardContext start 严重: Context [/DemoOne] startup failed due to previous errors

struts.xml

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE struts PUBLIC

        "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"

        "">

<struts>

  <package name="DemoOone" extends="struts-default">     <action name="Login" class="www.LoginAction">       <result name="error">/error.jsp</result>       <result name="success">/welcome.jsp</result>     </action>   </package> </struts>

web.xml

<?xml version="1.0" encoding="UTF-8"?>

<web-app id="WebApp_ID" version="2.4" xmlns="" xmlns:xsi="" xsi:schemaLocation=" ">  <display-name>DemoOne</display-name>  <welcome-file-list>   <welcome-file>index.html</welcome-file>  </welcome-file-list>    <filter>    <filter-name>struts2</filter-name>    <filter-class>org.apache.Struts2.dispatcher.FilterDispatcher</filter-class>  </filter>  <filter-mapping>    <filter-name>struts2</filter-name>    <url-pattern>/*</url-pattern>  </filter-mapping> </web-app>