100分！求解决Struts2 配置问题
Tomcat 7.0   Struts2  2.3.7
导入的jar包：
commons-io-2.0.1.jar
commons-lang-2.4.jar
commons-lang3-3.q.jar
commons-logging-1.1.1.jar
freemarker-2.3.19.jar
javassist-3.11.0.GA.jar
ognl-3.0.5.jar
struts2-core-2.3.7.jar
xwork-core-2.3.7.jar

web.xml

<filter>

    <filter-name>struts2</filter-name>

    <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>//这里有没有问题？

  </filter>

  <filter-mapping>

    <filter-name>struts2</filter-name>

    <url-pattern>/*</url-pattern>

  </filter-mapping>

struts.xml

<?xml version="1.0" encoding="utf-8" ?>//这里对吗？自己写的

<!DOCTYPE struts PUBLIC

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

          "http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>

  <package name="struts" extends="struts-default">

    <action name="query" class="cn.item.action.QueryAction">

      <result name="result">/result.jsp</result>

      <result name="error">/error.jsp</result>

    </action>

  </package>

</struts>

异常代码:
严重: Dispatcher initialization failed
Unable to load configuration. - bean - jar:file:/C:/Program%20Files%20(x86)/Apache%20Software%20Foundation/Tomcat%207.0/webapps/Struts2/WEB-INF/lib/struts2-core-2.3.7.jar!/struts-default.xml:53:178
at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:71)
at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:429)
at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:471)
at org.apache.struts2.dispatcher.FilterDispatcher.init(FilterDispatcher.java:193)
at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:277)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:258)
at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:382)
at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:103)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4650)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5306)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:633)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1105)
at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1664)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.