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

Struts 2 Framework is not dependent on Servlet API. Struts 2 Actions are not coupled to a container. Most often the servlet contexts are represented as simple Maps, allowing Actions to be tested in isolation.

Filter is a part of Servlet API so Struts 2 Framework uses the concept of Interceptors to share the solution for some common concerns by different actions.

Also you can easily write test cases for Interceptor and Action class.