can JSP be used as controller in MVC

[sitaram irrinki]

Can a JSP be used as controllor in MVC architecture ? If NO, why

[Stefan Evans]

>Can a JSP be used as controllor in MVC architecture
Yes it can be.
With a JSP you can do anything a servlet can do.

However what would be the point?
A controllers purpose in life is to look at the request, and then dispatch it to the appropriate handler.
A JSPs purpose in life is to produce an html page for display.

While you CAN use a JSP for a simple controller, I don't see anything about JSPs that recommend it for the job.
If you are writing scriptlet code - why isn't it in a servlet?
I suppose the <jsp:forward>, <jsp:include> tags combined with the some conditional logic could provide a controller, but only really for the simplest of controllers.

Bottom line: yes you can use a JSP for a controller, but there are more appropriate alternatives. Use the right tool for the right job.

[Ben Souther]

Yes, and I could pound nails in with the back of a wrench if I needed to.
I'd prefer to use a hammer though.

[marchrose rose]

Hi,

Yes, you can use JSP as a controller in MVC.

Basically there are two models of MVC.
1.MVC1
2.MVC2

In MVC1 architecture Jsp acts as a controller as well as processing the client request.But mvc1 architecture is best suited for small applications.

In MVC2 architecture Servlet acts as a controller.Struts framework uses MVC2 architecture.

Thanks,
march

[Ben Souther]

That's Model1 and Model2.
Model2 is MVC.
Model1 is not.

[William Brogden]

Please remember that everything in the JSP API is designed to serve character streams. If your application ever needs to serve binary data such as PDFs, images, sound files, etc. having a JSP as the initial request handler will cause you endless trouble. Just "bite the bullet" and learn how to use servlets - it really is quite easy.
Bill