Unable to initialize Struts ActionServlet

Bonjour,

Je suis débutante en développement web, et depuis un certain temps je souffre de l'exception suivante:

Unable to initialize Struts ActionServlet due to an unexpected exception or error thrown, so marking the servlet as unavailable. Most likely, this is due to an incorrect or missing library dependency.

mon fichier web.xml est le suivant:

Code:

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<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns="http://java.sun.com/xml/ns/javaee"
	xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
	id="WebApp_ID" version="2.5">
	<!-- Action Servlet Configuration -->
 
	<display-name>calculCommission</display-name>
	<description>stage</description>
 
	<servlet>
		<servlet-name>action</servlet-name>
		<servlet-class>
			org.apache.struts.action.ActionServlet
		</servlet-class>
 
		<init-param>
				<param-name>application</param-name>
				<param-value>test.struts.MessageResources</param-value>
			</init-param>
 
		<init-param>
			<param-name>mapping</param-name>
			<param-value>
				org.apache.struts.action.RequestActionMapping
			</param-value>
		</init-param>
 
		<init-param>
				<param-name>config</param-name>
				<param-value>/WEB-INF/struts-config.xml</param-value>
			</init-param>
 
			<init-param>
				<param-name>debug</param-name>
				<param-value>2</param-value>
			</init-param>
			<init-param>
				<param-name>validate</param-name>
				<param-value>true</param-value>
			</init-param>
			<load-on-startup>2</load-on-startup>
 
 
	</servlet>
 
 
 
	<!-- Action Servlet Mapping -->
	<servlet-mapping>
		<servlet-name>action</servlet-name>
		<url-pattern>*.do</url-pattern>
	</servlet-mapping>
 
 
	<filter>
		<filter-name>Hibernate Session In View Filter</filter-name>
		<filter-class>
			org.springframework.orm.hibernate3.support.OpenSessionInViewFilter
		</filter-class>
	</filter>
	<filter-mapping>
		<filter-name>Hibernate Session In View Filter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
 
 
 
	<!--  configuration SPRING : listener + context config location -->
	<listener>
 
		<listener-class>
 
			org.springframework.web.context.ContextLoaderListener
 
		</listener-class>
 
	</listener>
 
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>/WEB-INF/spring-data.xml</param-value>
	</context-param>
 
	<!-- The Welcome File List -->
	<welcome-file-list>
		<welcome-file>authentificationPage.jsp</welcome-file>
	</welcome-file-list>
 
	<!-- 	<taglib>
		<taglib-uri>/WEB-INF/struts-bean.tld</taglib-uri>
		<taglib-location>/WEB-INF/struts-bean.tld</taglib-location>
		</taglib>
 
 
		<taglib>
		<taglib-uri>/WEB-INF/struts-layout.tld</taglib-uri>
		<taglib-location>/WEB-INF/struts-layout.tld</taglib-location>
		</taglib>
 
 
		<taglib>
		<taglib-uri>jstl-c</taglib-uri>
		<taglib-location>/WEB-INF/c.tld</taglib-location>
		</taglib>
 
		<taglib>
		<taglib-uri>jstl-fmt</taglib-uri>
		<taglib-location>/WEB-INF/fmt.tld</taglib-location>
		</taglib>
 
		<taglib>
		<taglib-uri>/WEB-INF/sql.tld</taglib-uri>
		<taglib-location>/WEB-INF/sql.tld</taglib-location>
		</taglib>
 
		<taglib>
		<taglib-uri>/WEB-INF/x.tld</taglib-uri>
		<taglib-location>/WEB-INF/x.tld</taglib-location>
		</taglib> -->
 
	<!-- Struts Tag Library Descriptors -->
	<!--	<taglib>
		<taglib-uri>/WEB-INF/struts-bean-el.tld</taglib-uri>
		<taglib-location>/WEB-INF/struts-bean-el.tld</taglib-location>
		</taglib>
 
		<taglib>
		<taglib-uri>/WEB-INF/struts-html-el.tld</taglib-uri>
		<taglib-location>/WEB-INF/struts-html-el.tld</taglib-location>
		</taglib>
 
		<taglib>
		<taglib-uri>/WEB-INF/struts-logic-el.tld</taglib-uri>
		<taglib-location>/WEB-INF/struts-logic-el.tld</taglib-location>
		</taglib> -->
 
	<!-- Declaration DataSource -->
	<resource-ref>
		<description>Ressource JDBC de l'application</description>
		<res-ref-name>jdbc/dbds</res-ref-name>
		<res-type>javax.sql.DataSource</res-type>
		<res-auth>Container</res-auth>
	</resource-ref>
 
</web-app>

et mon fichier struts-config.xml est le suivant:

Code:

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<?xml version="1.0" encoding="ISO-8859-1" ?>
 
<!DOCTYPE struts-config PUBLIC
          "-//Apache Software Foundation//DTD Struts Configuration 1.1//EN"
          "http://jakarta.apache.org/struts/dtds/struts-config_1_1.dtd">
 
 
<struts-config>
	<data-sources>
 
 
	</data-sources>
 
 
 
	<!-- ========== Form Bean Definitions =================================== -->
<form-beans>
		<form-bean name="AuthentificationForm"
			type="com.tunisiana.storcash.formes.AuthentificationForm">
			<form-property name="username" type="java.lang.String" />
			<form-property name="password" type="java.lang.String" />
		</form-bean>
 
<action path="/login"
			type="com.tunisiana.storcash.actions.AuthentificationAction"
			name="AuthentificationForm" scope="request" 
			input="/authentificationPage.jsp" validate="true">
			<forward name="failure" path="/authentificationPage.jsp" />
 
		</action>
 
<resource-ref>
		<description>Ressource JDBC de l'application</description>
		<res-ref-name>jdbc/dbds</res-ref-name>
		<res-type>javax.sql.DataSource</res-type>
		<res-auth>Container</res-auth>
	</resource-ref>

mon but est d'afficher une page d'authentification , ma jsp s'appelle: authentificationPage.

merci d'avance pour votre aide :)