Struts GWT Plugin is the recommended way to integrate Struts 2 and GWT.Use this
tutorial if you cannot change your actions, or you just don't like the way (GWT
way) that you have to implement them to be used with the plugin. These tutorial
will demonstrate how to call an Struts 2 action, using GWT to submit a form and
use the returned data.
I'm not sure that integrating Struts and GWT is a good move.
Struts 2 +
GWT
