Cascaded comboboxes in a Jsp with data form a DB. How do i do that?

Question

Hy.What i am trying to do is preety simple (as logic) but i just can`t figure out how to do it. I am making a project using classic MCV with servlets and jsp and i am getting data from a Data Base.I have a library with books and authors and what i am trying to do is to make 2 comboboxes , the first one containing the author names, and after i select one of the author names , in the second combobox to show me all the book written by that author and select one book. I found something in javascript the link :
first combo example and
second combo example and
third combo example
i would like something like that to do ,but in those examples the data is already there , i need to call a method from a java bean , that returns a list of Authors and i want the author name to be inside the combo list.
It's easy to do in swing because you can have action listeners on a combobox , and you can get the selected index but here I have no idea how to do this.
If someone has any ideas on how to do this , not neccesarely to be done in java script, or using servlet actions , or another way to select the books easily ... I would apreciate it .
thx alot.

... sounds like 2 step process... 1 get authors... 2 get the books... the 2nd one could be done with an Ajax call if you wan to keep the user on the same page etc. — vector, Apr 08 '11 at 22:37
possible duplicate of [Populating child dropdownlists in JSP/Servlet](http://stackoverflow.com/questions/2263996/populating-child-dropdownlists-in-jsp-servlet) — BalusC, Apr 08 '11 at 23:08

score 1 · Answer 1 · answered May 02 '11 at 07:15

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Would you like to use jsp, servlets only? Because you can do it easily by any of java frameworks like struts2 with ajax call

answered May 02 '11 at 07:15

dbyuvaraj

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how is it different ? because to render i use jstl.struts 2 suports other calls ? – Alexx May 04 '11 at 11:47

score 1 · Accepted Answer · answered May 05 '11 at 08:36

Personnally I would use DWR for that kind of problematic.

http://directwebremoting.org/dwr/index.html

I like JQuery as well, but i prefer DWR for doing the ajax calls and keep the jquery for pure client processing / beautify the GUI with jquery components.

DWR integrates with many java technologies (jsp, struts, spring, hibernate, jsf). I really like it and it is very simple to start to work with (very short learning curve).

Cascaded comboboxes in a Jsp with data form a DB. How do i do that?

2 Answers2