EJB / MVC Design

[MP]

I have never used MVC design before and was wondering how all you
pro's out there would approach the following:

A user registration and login system.

If I understand correctly the registration and login screens will be
JSP which will then forward to a servlet which will access a EJB? to
do the db work and then serve a JSP page back to the client?

Anyone have any input / suggestions or resources?

Thanks.

 

[Bryce (Work)]

I have never used MVC design before and was wondering how all you
pro's out there would approach the following:

A user registration and login system.

If I understand correctly the registration and login screens will be
JSP which will then forward to a servlet which will access a EJB? to
do the db work and then serve a JSP page back to the client?

Anyone have any input / suggestions or resources?

Look at Struts (or one of the myriad of different frameworks out
there).

Personally, I try to keep the login stuff out of my regular code, so
I've written a Servlet Filter which checks to see if a "UserView" is
in the session. If not, forwards to a login.jsp. If so, then uses that
login information to log into the application server. That way, I
don't have to have the login stuff inside my Servlets...

 

[Sudsy]

Look at Struts (or one of the myriad of different frameworks out

there).

Personally, I try to keep the login stuff out of my regular code, so
I've written a Servlet Filter which checks to see if a "UserView" is
in the session. If not, forwards to a login.jsp. If so, then uses that
login information to log into the application server. That way, I
don't have to have the login stuff inside my Servlets...

Filters are cleaner but I just extended RequestProcessor and basically
perform the same operation: if user isn't logged-in then forward to a
login page.

 

[Anton V. Goldberg]

I have never used MVC design before and was wondering how all you
pro's out there would approach the following:

A user registration and login system.

I usually try to use J2EE security if I can. Then one front controller
servlet, which intercepts all your requests (mapped to *) does
post-processing. Struts supply such servlet for you, if you don't use
Struts, make it yourself.
Anton V. Goldberg

 

[shay]

MVC is quite simple if you are using the correct tool.
The good thing about MVC is that you can use different technologies
for each layer. For a simple login application an EJB might be an
overkill.

Take a look at Oracle JDeveloper 10g tutorial page to see some samples
of MVC architectures such as (JSP-Struts-EJB / UIX-Struts-Toplink).
And try out the Oracle ADF for a simple MVC framework based on struts.
http://otn.oracle.com/products/jdev/collateral/prodtour10g.html