Jdeveloper 10g has a very usefull pageflow diagrammer, which allows you to diagram the different pages in your web application. You can drag struts actions on the diagram and connect them to jsp pages. Setting up a struts jsp application is a no brainer this way. Jsp pages, struts actions, and the struts config file are generated based on your model.
If you edit a jsp, for example an edit form, and set the action attribute of the form to point to some action that will handle updating the data to the database, this relationship between the jsp page and the action will not automatically be displayed in the pageflow diagram. If you select ‘refresh diagram from all pages’ these links will be displayed in the diagram. Nice!