[Security] struts2 et acegi ne fonctionne pas!

bonjour,
j'ai essayé d'intégrer acegi security dans mon application web mais elle démarre pas !
voici mon fichier web.xml:
Code:
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<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4"
	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">
	<display-name>prTest</display-name>
 
	<context-param>
 
		<param-name>contextConfigLocation</param-name>
		<param-value>/WEB-INF/applicationContextecurity.xml</param-value>
	</context-param>
 
<!-- Debut partie ZKOSS  -->
	<listener>
		<description>
		Used to cleanup when a session is destroyed</description>
		<display-name>ZK Session Cleaner</display-name>
		<listener-class>org.zkoss.zk.ui.http.HttpSessionListener</listener-class>
	</listener>
	<servlet>
		<description>
		The servlet loads the DSP pages.</description>
		<servlet-name>dspLoader</servlet-name>
		<servlet-class>org.zkoss.web.servlet.dsp.InterpreterServlet</servlet-class>
	</servlet>
	<servlet>
		<description>
		ZK loader for ZUML pages</description>
		<servlet-name>zkLoader</servlet-name>
		<servlet-class>org.zkoss.zk.ui.http.DHtmlLayoutServlet</servlet-class>
		<init-param>
			<param-name>update-uri</param-name>
			<param-value>/zkau</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>
	<servlet>
		<description>
		The asynchronous update engine for ZK</description>
		<servlet-name>auEngine</servlet-name>
		<servlet-class>org.zkoss.zk.au.http.DHtmlUpdateServlet</servlet-class>
	</servlet>
	<servlet-mapping>
		<servlet-name>dspLoader</servlet-name>
		<url-pattern>*.dsp</url-pattern>
	</servlet-mapping>
	<servlet-mapping>
		<servlet-name>zkLoader</servlet-name>
		<url-pattern>*.zul</url-pattern>
	</servlet-mapping>
	<servlet-mapping>
		<servlet-name>zkLoader</servlet-name>
		<url-pattern>*.zhtml</url-pattern>
	</servlet-mapping>
	<servlet-mapping>
		<servlet-name>auEngine</servlet-name>
		<url-pattern>/zkau/*</url-pattern>
	</servlet-mapping>
<!-- Fin partie ZKOSS  -->
 
	<filter>
		<filter-name>Acegi Security Filter</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>struts2</filter-name>
		<filter-class>
			org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
	</filter>
 
	<filter-mapping>
		<filter-name>struts2</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
 
 
 
	<welcome-file-list>
		<welcome-file>index.html</welcome-file>
		<welcome-file>index.zul</welcome-file>
	</welcome-file-list>
</web-app>
merci pour votre aide