Spring in Tomcat - what's lacking?

As far as I'm concerned Spring is integrated in Apache Tomcat. Although, when trying to implement session beans, I've encountered an error

The matching wildcard is strict, but no declaration can be found for element 'aop:scoped-proxy'.

on the declaration of bean:

<bean id="l开发者_如何学运维oginStorer" class="sef.inerfaces.service.LoginStorer" scope="session">
    <aop:scoped-proxy/>
</bean>

As I googled up, that may be because spring-aop.jar is not present in classpath. So, I guess I have to take it from a standalone Spring installation. My question is: am I right to do so, and if yes, what else from Spring is missing in Tomcat?

P.S. Tomcat is of 7.0.6 version.

Consider using Maven for dependency resolution and build.

As for your assumption, it is incorrect. Tomcat does not bundle Spring out of the box.

This really looks like a problem in the spring context file where the namespace for aop has not been mentioned.