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JSPs and the Controller

Dan Drillich
Ranch Hand

Joined: Jul 09, 2001
Posts: 1180
Good Day,

The J2EE pattern catalog shows the Front Controller in front of the View Helper which represents the JSP/Servlet. In Cade's diagrams the JSPs are in front of the controller. So, I'm a bit confused about the order of JSPs and the controller.

Any thoughts?


William Butler Yeats: All life is a preparation for something that probably will never happen. Unless you make it happen.
Chandramouli Ram
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Joined: Mar 07, 2005
Posts: 65
Hi Dan,

What you're probably referring to is the J2EE pattern catalog on one side and the sequence diagrams depicted in Cade's book on the other side.

Here is my perspective: Look at the sequence diagram, say for the Front controller pattern. The first one on left would be the "Client". The JSP's in Cade's sequence diagrams actually stand for that. On submission, they present the data to the controller for processing.
[ June 21, 2006: Message edited by: Ram Chandramouli ]

Thanks & Regards,<br />Chandramouli Ram
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