Which one is better Struts2 or Spring?

In Struts 2 you can develop only web based application. However, spring’s usefulness is not limited to server-side development. Any java application can benefit from spring in terms of simplicity, testability, and loose coupling.

Comparing features:

·         both allow configuration via XML or annotations

·         both follow the MVC pattern

·         both have interceptors for cross-cutting concerns

·         both allow for "controller" style action classes

·         both are stable and mature

·         both have actions that are POJOs and return Strings as results

·         both making unit testing simple

API of Spring MVC has better documentation. The Struts2 guides and tutorials on the Struts2 site are not well documented.  

All most you can do anything in spring that is also very easily achievable in struts2 (in concern of web application).

I thing both are excellent for bulling web application.