This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
In my application i wish to get details from a database table.
So first there is a jsp page on which the user will enter some data and on submission the results will be extracted from the database and displayed to the user in another jsp.
What I did :-
I created a jsp on which the user would enter the details and then on submit there would be an ajax call to a servlet which would retrive the data and those data would be displayed on another jsp page.
What my team membr wants:-
to give a link to another jsp page instead of the servlet in the ajax call. The jsp would have the data retrieved abd displayed to the user.
My question is whether it is a good programming practise to call a jsp from jsp without any servlet? My team mate says that this would reduce the response time to the user.
JSPs should not contain business logic (much less access the DB directly), so this would certainly not be a good practice. Plus, the overhead of addressing a servlet and having that forward to a JSP is negligible (compared to having just a JSP) - it will not be measurable compared to networking, processing and rendering times.
Joined: Jan 11, 2013
If i create a pojo class which would have a method that deals with database and invoke those methods using expression language in the jsp then would it make any different or it is the same as haveing the db access code on the jsp??
Joined: Mar 22, 2005
It's a different design, but the difference in performance would again be negligible. I advise to do it right from the beginning, and put a controller (the C in MVC) in the middle.