Filters vs Interceptors in Struts 2

Question

What\'s the difference, really, between filters and interceptors? I realize that interceptors fire before and after an action, recursively, and filters can be configured to fir

Answer 1

the interceptor stack fires on every request.
filters only apply to the urls for which they are defined.

edit -- you use one or the other depending on need. Lets say you need to verify a cookie is present for every request. User an interceptor. Lets say that you need to pop up an external app on some requests (driven by a url), use a filter.

I think interceptors are the more commonly used tool...

why would you have a url with no associated action?