Unable to load configuration.

Unable to load configuration. - bean - jar:file:/D:/projects/tomcat/temp/2-training-management-portlet/WEB-INF/lib/struts2-core-2.1.8.1.jar!/struts-default.xml:29:72用的jar包有:
xwork-core-2.1.6.jar,struts2-core-2.1.8.1.jar,ognl-2.7.3.jar,freeer-2.3.15.jar,commons-logging-1.0.4.jar,commons-io-1.3.2.jar,commons-fileupload-1.2.1.jarstruts.xml<struts>
<constant name="struts.devMode" value="false" />
<!-- sc_zhang TrainingManagement -->
<package name="trainingmanagement" extends="struts-portlet-default" namespace="/trainingmanagement">
<action name="trainingManagement" class="action.TrainingManagement">
<result name="input">/view.jsp</result>
</action>
</package>
</struts>web.xml
<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>