If the goal is to prevent duplicate submission of forms then use token
interceptor http://struts.apache.org/2.x/docs/token-interceptor.html or tokenSession
interceptor http://struts.apache.org/2.x/docs/token-session-interceptor.html.
If you simple want to refresh the page after submit without submitting again then redirect to action where you only show results not form. Use redirectAction
result for that.