Bonjour

je suis entrain de développer une application sous eclipse avec tomcat 7.0.21 . Mon problème c'est que j'arrive pas à faire la configuration de mon application (web.xml et applicationContext.xml) l'erreur qui s'affiche au console est:
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Grave: Erreur lors de la configuration de la classe d'écoute de l'application (application listener) org.springframework.web.context.request.RequestContextFilter
java.lang.ClassNotFoundException: org.springframework.web.context.request.RequestContextFilter
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1678)
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1523)
	at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:415)
	at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:397)
	at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:118)
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4660)
	at org.apache.catalina.core.StandardContext$1.call(StandardContext.java:5226)
	at org.apache.catalina.core.StandardContext$1.call(StandardContext.java:5221)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
	at java.util.concurrent.FutureTask.run(FutureTask.java:166)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
	at java.lang.Thread.run(Thread.java:722)
Mon web.xml:
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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">
  <display-name>Gestion_Projet_v1</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
  <servlet>
    <servlet-name>Faces Servlet</servlet-name>
    <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <context-param>
    <param-name>javax.faces.STATE_SAVING_METHOD</param-name>
    <param-value>server</param-value>
  </context-param>
  <context-param>
    <param-name>javax.faces.DEFAULT_SUFFIX</param-name>
    <param-value>.jspx</param-value>
  </context-param>
  <context-param>
    <description>To allow multiple windows for a single application.</description>
    <param-name>com.icesoft.faces.concurrentDOMViews</param-name>
    <param-value>false</param-value>
  </context-param>
  <context-param>
    <description>Turn on/off application-wide synchronous or asynchronous updates.</description>
    <param-name>com.icesoft.faces.synchronousUpdate</param-name>
    <param-value>false</param-value>
  </context-param>
  <context-param>
    <description>Google Maps API key is required if gMap component is used. Sign up for an API key from http://code.google.com/apis/maps/signup.html</description>
    <param-name>com.icesoft.faces.gmapKey</param-name>
    <param-value>ABQIAAAADlu0ZiSTam64EKaCQr9eTRTOTuQNzJNXRlYRLknj4cQ89tFfpxTEqxQnVWL4k55OPICgF5_SOZE06A</param-value>
  </context-param>
  <context-param>
    <param-name>com.icesoft.faces.uploadDirectory</param-name>
    <param-value>upload</param-value>
  </context-param>
  <context-param>
    <param-name>com.icesoft.faces.uploadMaxFileSize</param-name>
    <param-value>4048576</param-value>
  </context-param>
  <servlet>
    <servlet-name>Persistent Faces Servlet</servlet-name>
    <servlet-class>com.icesoft.faces.webapp.xmlhttp.PersistentFacesServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>Persistent Faces Servlet</servlet-name>
    <url-pattern>*.iface</url-pattern>
    <url-pattern>*.jspx</url-pattern>
    <url-pattern>/xmlhttp/*</url-pattern>
    <url-pattern>/faces/*</url-pattern>
  </servlet-mapping>
  <servlet>
    <servlet-name>Blocking Servlet</servlet-name>
    <servlet-class>com.icesoft.faces.webapp.xmlhttp.BlockingServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>Blocking Servlet</servlet-name>
    <url-pattern>/block/*</url-pattern>
  </servlet-mapping>
  <servlet>
    <servlet-name>uploadServlet</servlet-name>
    <servlet-class>com.icesoft.faces.component.inputfile.FileUploadServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>uploadServlet</servlet-name>
    <url-pattern>/uploadHtml</url-pattern>
  </servlet-mapping>
  <listener>
    <listener-class>com.icesoft.faces.util.event.servlet.ContextEventRepeater</listener-class>
  </listener>
  
  	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>
	 <listener>
	<listener-class>org.springframework.web.context.request.RequestContextFilter</listener-class>
   </listener>
 
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>/WEB-INF/applicationContext.xml</param-value>
	</context-param>
 
 
	<persistence-unit-ref>
		<persistence-unit-ref-name>persistence/Gestion_Projet_v1</persistence-unit-ref-name>
		<persistence-unit-name>Gestion_Projet_v1</persistence-unit-name>
	</persistence-unit-ref>
 
</web-app>
applicationContext.xml:
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<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
	xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"
	xmlns:jee="http://www.springframework.org/schema/jee" xmlns:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="
			<a href="http://www.springframework.org/schema/aop" target="_blank">http://www.springframework.org/schema/aop</a> <a href="http://www.springframework.org/schema/aop/spring-aop-2.5.xsd" target="_blank">http://www.springframework.org/schem...ng-aop-2.5.xsd</a>
			<a href="http://www.springframework.org/schema/beans" target="_blank">http://www.springframework.org/schema/beans</a> <a href="http://www.springframework.org/schema/beans/spring-beans-2.5.xsd" target="_blank">http://www.springframework.org/schem...-beans-2.5.xsd</a>
			<a href="http://www.springframework.org/schema/context" target="_blank">http://www.springframework.org/schema/context</a> <a href="http://www.springframework.org/schema/context/spring-context-2.5.xsd" target="_blank">http://www.springframework.org/schem...ontext-2.5.xsd</a>
			<a href="http://www.springframework.org/schema/jee" target="_blank">http://www.springframework.org/schema/jee</a> <a href="http://www.springframework.org/schema/jee/spring-jee-2.5.xsd" target="_blank">http://www.springframework.org/schem...ng-jee-2.5.xsd</a>
			<a href="http://www.springframework.org/schema/tx" target="_blank">http://www.springframework.org/schema/tx</a> http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
 
	<context:annotation-config />
	<context:component-scan base-package="gestion_projet.dao" />
	<context:component-scan base-package="gestion_projet.services" />
	<context:component-scan base-package="gestion_projet.control" />
 
 
	<!--
		LocalContainerEntityManagerFactoryBean to create the
		EntityManagerFactory
	-->
	<bean id="Gestion_Projet_v1" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"  scope="session">
 
		<property name="jpaVendorAdapter">
			<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
		</property>
	</bean>
 
	<!-- <tx:annotation-driven /> pour dire أ  Spring de chercher @Transactional -->
	<tx:annotation-driven transaction-manager="transactionManager" />
 
	<!--  Le gestionnaire de transactions: ici on a utilisأ© le jta -->
	<bean id="transactionManager"
		class="org.springframework.transaction.jta.JtaTransactionManager" />
 
	<!-- Cette bean permet de dire au conteneur Spring que les classes @Repository ont
	besoin que des transaction exception soient appliquأ©es sur eux		-->
	<bean
		class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />
 
 
</beans>
.je vous sollicite afin de m'accorder une aide exceptionnelle car mes difficultés rendent chaque jour ma situation plus précaire et je crains de sombrer dans une spirale infernale.