Request scoped bean inside a Singleton bean - spring

Question

I have a web app where i define 2 bean
1 with a singleton scope and one with a request scope.
I need the request scoped bean inside the singleton bean.
So i ended up with this
<bean id="routingDataSource" class="org.ai2l.ifsr.service.multiTenants.RoutingDataSource" scope="request">
<aop:scoped-proxy/>
<property name="targetDataSources" value="#{tenantSpecificDependencyFactory.tenantIdToDataSource}"/>
<!-- <property name="defaultTargetDataSource" ref="parentDataSource"/> -->
</bean>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceUnitName" value="ifsrPU"/>
<property name="dataSource" ref="routingDataSource"/>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="databasePlatform" value="${hibernate.dialect}"/>
</bean>
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.ejb.naming_strategy">
org.hibernate.cfg.ImprovedNamingStrategy
</prop>
</props>
</property>
</bean>
As you will notice i've use the <aop:scoped-proxy/>but it isn't working.
I've also tryed the
<listener>
<listener-class>
org.springframework.web.context.request.RequestContextListener
</listener-class>
inside my web.xml. But none of this is working.
I still get this error
Caused by: java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.
Does any one know why this happens??