This is the example project referred to in the Struts 2 documentation, How To Create A Struts 2 Web Application tutorial.
To build the application's war file run mvn clean package
from the project's root folder.
The war file is created in the target
sub-folder.
run the command mvn jetty:run
Copy the war file to your Servlet container (e.g. Tomcat) and then startup the Servlet container.
In a web browser go to: http://localhost:8080/basic-struts/index.action
You should see a web page with
Welcome to Struts 2!