Global login verification (or other permissions)

In the OA system I used, built a baseaction inherited dispatchaction and replicated its Execute method. The other action is inherited from this action.

public class Baseaction extends Dispatchaction {

@Override
Public Actionforward Execute (actionmapping mapping, actionform form, httpservletrequest request, HttpServletResponse Response) throws Exception {

Add code to Judge permissions
User user = (user) request.getsession (). getattribute ("login");
if (user = = null) {
return Mapping.findforward ("login");
}

Continue the responsibilities of the parent class and distribute the request to different methods.
return Super.execute (mapping, form, request, response);
}

}
Login is configured as a global forward.