<interceptors>

       <interceptor-stack name="testSessionValidationStack">
       <interceptor-ref name="defaultStack" />
       <interceptor-ref name="SessionCheckInterceptor" />
       </interceptor-stack>
       <interceptor name="SessionCheckInterceptor"  class="com.portal.SessionCheckInterceptor"/>
    </interceptors>


  <default-interceptor-ref name="testSessionValidationStack"/>

  <global-results>
           <result name="sessionexpired" >signout.jsp</result>
  </global-results>