Dynamically populate a dropdown menu from database through JSTL

Question

I have the following setup for my web-app:

1.) A Bean class.
2.) A DAO class that returns an arraylist containing Bean.
3.) A JSP page that has a dropdown menu.

I need to populate this dropdown menu from arraylist created in step 2. I don't know much about JSTL.I managed to populate my dropdown through scriptlets (using for each loop and iterating over the arraylist stored in session).
Now I need to free my code from scriptlets. Should I learn JSTL or use AJAX (or jquery)? Also do I need to call a servlet first to return an arraylist, in case I plan to use <jsp:useBean> tag?

c_uld · Accepted Answer · 2013-02-28 18:56:47Z

1

<select>
     <c:forEach var="item" items="${list}">
          <option><c:out value="${item}"/></option>
     </c:forEach>
</select>

In regards to your second question. Yes, you can call request.setAttribute(...) and use the RequestDispatcher to forward to the JSP page which then uses the useBean tag.

answered Feb 28, 2013 at 18:56

c_uld

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2 Comments

Manas Over a year ago

So,for example,if I forward my arraylist named "dlist" from my servlet,and properties of my bean are "name" and "age",then my tag would be <select> <c:forEach var="item" items="${dlist}"> <option><c:out value="${item.name}"/></option> </c:forEach> </select> Is it correct?

c_uld Over a year ago

Yes, that is correct. Just make sure that the attribute is also called dlist: request.setAttribute("dlist", dlist);

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