hi i am getting exception

The Struts dispatcher cannot be found. This is usually caused by using Struts tags without the associated filter. Struts tags are only usable when the request has passed through its servlet filter, which initializes the Struts dispatcher needed for this tag. - [unknown location]

this is my web.xml file

<p><?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"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
    version="2.4">
    <display-name>AcegiTraining</display-name>
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
                   /WEB-INF/context/applicationContext.xml
         </param-value>
    </context-param>
    <context-param>
        <param-name>log4jConfigLocation</param-name>
        <param-value>classpath:dev.log4j.xml</param-value>
    </context-param>
    <context-param>
        <param-name>log4jExposeWebAppRoot</param-name>
        <param-value>false</param-value>
    </context-param>
    <mime-mapping>
        <extension>css</extension>
        <mime-type>text/css</mime-type>
    </mime-mapping>
    <filter>
        <filter-name>Acegi Filter Chain Proxy</filter-name>
        <filter-class>
            org.acegisecurity.util.FilterToBeanProxy
        </filter-class>
        <init-param>
            <param-name>targetClass</param-name>
            <param-value>
                org.acegisecurity.util.FilterChainProxy
            </param-value>
        </init-param>
    </filter>
    <filter>
        <filter-name>sitemesh</filter-name>
        <filter-class>
            com.opensymphony.module.sitemesh.filter.PageFilter
        </filter-class>
    </filter>
    <filter-mapping>
        <filter-name>Acegi Filter Chain Proxy</filter-name>
        <url-pattern>/j<em>acegi</em>security_check</url-pattern>
    </filter-mapping>
    <filter-mapping>
        <filter-name>Acegi Filter Chain Proxy</filter-name>
        <url-pattern>/j<em>acegi</em>logout</url-pattern>
    </filter-mapping>
    <filter-mapping>
        <filter-name>Acegi Filter Chain Proxy</filter-name>
        <url-pattern>*.action</url-pattern>
    </filter-mapping>
    <filter-mapping>
        <filter-name>Acegi Filter Chain Proxy</filter-name>
        <url-pattern>*.jsp</url-pattern>
    </filter-mapping>
    <filter-mapping>
        <filter-name>sitemesh</filter-name>
        <url-pattern>/*</url-pattern>
        <dispatcher>REQUEST</dispatcher>
        <dispatcher>FORWARD</dispatcher>
    </filter-mapping>
    <listener>
        <display-name>log4jConfigListener</display-name>
        <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
    </listener></p>

<pre class="prettyprint">&lt;listener&gt;
    &lt;listener-class&gt;
        org.springframework.web.context.ContextLoaderListener
    &lt;/listener-class&gt;
&lt;/listener&gt;
&lt;listener&gt;
    &lt;listener-class&gt;
        org.acegisecurity.ui.session.HttpSessionEventPublisher
    &lt;/listener-class&gt;
&lt;/listener&gt;
&lt;welcome-file-list&gt;
    &lt;welcome-file&gt;index.jsp&lt;/welcome-file&gt;
&lt;/welcome-file-list&gt;
&lt;error-page&gt;
    &lt;error-code&gt;404&lt;/error-code&gt;
    &lt;location&gt;/404.jsp&lt;/location&gt;
&lt;/error-page&gt;
&lt;error-page&gt;
    &lt;error-code&gt;500&lt;/error-code&gt;
    &lt;location&gt;/error.jsp&lt;/location&gt;
&lt;/error-page&gt;


 &lt;listener&gt;
    &lt;listener-class&gt;org.apache.axis.transport.http.AxisHTTPSessionListener&lt;/listener-class&gt;
&lt;/listener&gt;
</code></pre>

<p>  <servlet>
    <servlet-name>AxisServlet</servlet-name>
    <display-name>Apache-Axis Servlet</display-name>
    <servlet-class>
        org.apache.axis.transport.http.AxisServlet
    </servlet-class>
  </servlet></p>

<p>  <servlet>
    <servlet-name>AdminServlet</servlet-name>
    <display-name>Axis Admin Servlet</display-name>
    <servlet-class>
        org.apache.axis.transport.http.AdminServlet
    </servlet-class>
    <load-on-startup>100</load-on-startup>
  </servlet></p>

<p>  <servlet>
    <servlet-name>SOAPMonitorService</servlet-name>
    <display-name>SOAPMonitorService</display-name>
    <servlet-class>
        org.apache.axis.monitor.SOAPMonitorService
    </servlet-class>
    <init-param>
      <param-name>SOAPMonitorPort</param-name>
      <param-value>5001</param-value>
    </init-param>
    <load-on-startup>100</load-on-startup>
  </servlet></p>

<p>  <servlet-mapping>
    <servlet-name>AxisServlet</servlet-name>
    <url-pattern>/servlet/AxisServlet</url-pattern>
  </servlet-mapping></p>

<p>  <servlet-mapping>
    <servlet-name>AxisServlet</servlet-name>
    <url-pattern>*.jws</url-pattern>
  </servlet-mapping></p>

<p>  <servlet-mapping>
    <servlet-name>AxisServlet</servlet-name>
    <url-pattern>/services/*</url-pattern>
  </servlet-mapping></p>

<p>  <servlet-mapping>
    <servlet-name>SOAPMonitorService</servlet-name>
    <url-pattern>/SOAPMonitor</url-pattern>
  </servlet-mapping></p>

<p> <!-- uncomment this if you want the admin servlet -->
   <session-config>
       <!-- Default to 5 minute session timeouts -->
       <session-timeout>5</session-timeout>
   </session-config></p>

<p>  <mime-mapping>
    <extension>wsdl</extension>
     <mime-type>text/xml</mime-type>
  </mime-mapping></p>

<p>  <mime-mapping>
    <extension>xsd</extension>
    <mime-type>text/xml</mime-type>
  </mime-mapping></p>

<p>  <welcome-file-list id="WelcomeFileList">
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.jws</welcome-file>
  </welcome-file-list></p>

<pre class="prettyprint">&lt;!-- For Struts Framework --&gt;
&lt;filter&gt;
 &lt;filter-name&gt;eproSessionFilter&lt;/filter-name&gt;
    &lt;filter-class&gt;com.epro.util.EproSessionFilter&lt;/filter-class&gt;
    &lt;init-param&gt;
      &lt;param-name&gt;ignorePage1&lt;/param-name&gt;
      &lt;param-value&gt;default/showLogin.action&lt;/param-value&gt;
   &lt;/init-param&gt;

&lt;/filter&gt;
</code></pre>

<p> <filter>
    <filter-name>hibernateFilter</filter-name>
    <filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
  </filter></p>

<pre class="prettyprint">&lt;filter&gt;
    &lt;filter-name&gt;struts2&lt;/filter-name&gt;
    &lt;filter-class&gt;org.apache.struts2.dispatcher.FilterDispatcher&lt;/filter-class&gt;
&lt;/filter&gt;
</code></pre>

<p><filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
</web-app></p>