Page Comparison

...

1. Create a ThreadLocal-based request and/or response holder class, similar to my old example.
2. Declare either a ServletRequestListener or Filter in web.xml to populate and clean up the ThreadLocal appropriately. A filter-based example is in my old project.
3. Implement proxy classes for HttpServletRequest and HttpServletResponse that just delegate all methods through to the request or response as obtained from the holder class.
4. Wire this proxy class to the beans that need it, using any of the above techniques:
   
   1. explicit dependency injection
   2. bean or bean factory post processors
   3. bean definition inheritance
   4. Java-based config
   5. etc

...

Auto-Adapting of non-Spring WebFlow Actions

The current notion of using OpenSAML profile actions which are Spring-independent is to wrap them in an Spring-dependent adaptor class.  Instead of doing this declaratively in the beans configuration XML, this could be done auto-magically in a BeanPostProcessor, allowing the beans XML to be simplified and contain only the declaration of the Spring-independent action bean.