Spring MVC Request mapping, can this be dynamic/configurable?

With Spring MVC, I know how you set the RequestMapping in every controller and method/action.

But what if I wanted this to be configurable, so for example I the following controllers:

BlogController 
 - with methods for listing blogs entries, single entry, new, update, etc.
ArticleController
 - with methods for listing articles entries, single entry, new, update, etc.

Now in my application, the administrator can setup 2 blogs for the webiste, and 1 article section so the urls would be like:

www.example.com/article_section1/ - uses ArticleController
www.example.com/blog1/ - uses BlogController
www.example.com/blog2/ - uses BlogController

Maybe after a while the administrator wants another article section, so they just configure that with a new section like:

www.example.com/article_section2/

This has to work dynamically/on-the-fly without having to restart the application of course.

My question is only concerned with how I will handle url mappings to my controllers.

How would this be possible with Spring MVC?

I only know how to map urls to controllers using @RequestMapping("/helloWorld") at the controller or method level, but this makes the url mappings fixed and not configurable like how I want it.

Update:

I will be storing the paths in the database, and with the mapping to the type of controller so like:

path                  controller
/article_section1/    article
/blog1/               blog
/blog2/               blog
..

With the above information, how could I dispatch the request to the correct controller?

Again, not looking to reload/redeploy, and I realize this will require more work but its in the spec :)