[Security] No bean named 'springSecurityFilterChain' is defined

Bonjour à tous,

Je suis en train d'essayer de configurer Spring Security pour qu'il communique avec un serveur Active Directory. Après avoir erré dans les dédales de la configuration de Spring Security (je débute, c'est la première fois que je touche à du spring), ça m'affiche l'erreur suivante :

No bean named 'springSecurityFilterChain' is defined

J'utilise :
Spring et Spring Security 3.0.2.RELEASE
Spring-LDAP 1.3.1.RELEASE
Maven 2.2.1

J'ai rien trouvé sur google, j'ai essayé de déclarer un bean correspondant dans le springConfiguration.xml mais ça n'a rien fait. Je suis en train de me retaper la doc de Spring Security pour voir si j'ai pas loupé un truc, en attendant voici les fichiers de conf :

web.xml :

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<?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">
 
    <filter>
        <filter-name>springSecurityFilterChain</filter-name>
        <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>springSecurityFilterChain</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
 
    <!-- SpringDM / Spring security application contexts -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
            classpath:springConfiguration.xml
            <!-- classpath:springSecuritySettings.xml    -->
        </param-value>
    </context-param>
 
    <listener>
        <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
    </listener>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
 
</web-app>

springConfiguration.xml :

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<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:sec="http://www.springframework.org/schema/security"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:util="http://www.springframework.org/schema/util" xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
	http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
	http://www.springframework.org/schema/context
	http://www.springframework.org/schema/context/spring-context-2.5.xsd
        http://www.springframework.org/schema/security
        http://www.springframework.org/schema/security/spring-security-2.0.1.xsd
        http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
 
<!-- FOR EASIER INJECTION (Not Working) -->
    <tx:annotation-driven/>
    <context:component-scan base-package="beans"/>
 
 
    <!-- DEFAULT VALUES FOR SYSTEM PROPERTIES -->
    <bean id="propertyPlaceholderConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="properties">
            <props>
                <prop key="application.default.property.key">propertyDefalutValue</prop>
            </props>
        </property>
        <property name="systemPropertiesModeName">
            <value>SYSTEM_PROPERTIES_MODE_OVERRIDE</value>
        </property>
        <property name="ignoreResourceNotFound" value="true"/>
        <property name="locations">
            <list>
                <value>classpath:config.properties</value>
                <!-- value>file:${user.home}/application.properties</value-->
            </list>
        </property>
    </bean>
 
   <!-- CONNECTION TO ACTIVE DIRECTORY  -->
    <bean id="contextSource" class="org.springframework.security.ldap.DefaultSpringSecurityContextSource">
        <constructor-arg index="0" value="ldap://xxx.net:389/cn=Users,dc=xxx,dc=net" />
        <property name="userDn" value="xxx\xxx" />
        <property name="password" value="xxxyyy" />
    </bean>
 
   <!-- OBJECT MAKINGS SEARCHES INTO ACTIVE DIRECTORY -->
    <bean id="ldapUserSearch" class="org.springframework.security.ldap.search.FilterBasedLdapUserSearch">
        <constructor-arg index="0" value="ou=users" />
        <constructor-arg index="1" value="(sAMAccountName={0})" /> <!-- Critère de recherche LDAP, ici le login de l'utilisateur correspond à l'uid de l'entrée LDAP -->
        <constructor-arg index="2" ref="contextSource" />
        <property name="searchSubtree" value="true" />
    </bean>
 
    <!-- MANAGING RIGHTS -->
    <bean id="testLdapAuthoritiesPopulator" class="com.XXX.test.TestLdapAuthoritiesPopulator"/>
 
    <!-- LDAP PROVIDER -->
    <bean id="ldapAuthProvider" class="org.springframework.security.ldap.authentication.LdapAuthenticationProvider">
        <constructor-arg index="0">
            <bean class="org.springframework.security.ldap.authentication.BindAuthenticator">
                <constructor-arg index="0" ref="contextSource" />
                <property name="userSearch" ref="ldapUserSearch" />
            </bean>
        </constructor-arg>
        <constructor-arg index="1">
            <!-- <bean ref="testLdapAuthoritiesPopulator" /> -->
            <bean class="org.springframework.security.ldap.userdetails.DefaultLdapAuthoritiesPopulator">
                <constructor-arg ref="contextSource"/>
                <constructor-arg value="ou=users"/>
                <property name="groupRoleAttribute" value="ou"/>
            </bean>
        </constructor-arg>
    </bean>
 
    <!--<bean id="springSecurityFilterChain" class="org.springframework.web.filter.Spring ">
    </bean>
    -->
</beans>

springSecuritySettings.xml

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<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/security"
             xmlns:beans="http://www.springframework.org/schema/beans"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://www.springframework.org/schema/beans
             http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
             http://www.springframework.org/schema/context
             http://www.springframework.org/schema/context/spring-context-2.5.xsd
             http://www.springframework.org/schema/security
             http://www.springframework.org/schema/security/spring-security-3.0.xsd
             http://www.springframework.org/schema/util
             http://www.springframework.org/schema/util/spring-util-2.0.xsd
             http://www.springframework.org/schema/tx
             http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
 
    <global-method-security pre-post-annotations="enabled">
        <!-- AspectJ pointcut expression that locates our "post" method and applies security that way
        <protect-pointcut expression="execution(* bigbank.*Service.post*(..))" access="ROLE_TELLER"/>
        -->
    </global-method-security>
 
    <http use-expressions="true">
        <intercept-url pattern="/**" access="hasRole('ROLE_USER')" />
        <form-login />
        <http-basic />
        <logout />
    </http>
 
    <security:authentication-manager>
        <security:authentication-provider ref="ldapAuthProvider"/>
    </security:authentication-manager>
</beans:beans>

Merci d'avance.