Re: jstl in portlets

Andreas Buechler wrote:
> Hi,
> 
> I'm trying to use jstl within my portlet but have some troubles getting 
> a simple forEach loop to work (see code snippet below). Are there 
> certain limitations on using jstl in portlets?
> 
> Regards,
> Andi
> 
> // bean.getAllToys() returns a Vector
> <c:forEach var="toy" items="<%= bean.getAllToys().elements() %>" >
>    <c:out value="${toy}" escapeXml="false" /><br />
> </c:forEach>
> 
> 
> 
> 

Andreas, have you tried your snippet without a portlet (i.e. in a pure 
Java webapplication)? Does it work there? JSTL works well within 
portlets. There are some general limitation in invoking web components 
from portlets, but I know nothing special for JSTL.

I assume your error relates on how you fill attributes with dynamic 
values and has nothing to do with t eportlet environment. There are 
different JSTL tags available for EL (${...}) and RT expr (<%= ... %>). 
I am not sure which one you use, and whether it is allowed to mix it up 
like that.

This simple example works in one of my portlets:

---

<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c"%>
<%
java.util.Vector v = new java.util.Vector();
v.add("Bride of Pinbot Pinball");
v.add("Sun ULTRA-1");
pageContext.setAttribute("myToys", v);
%>
<c:forEach var="toy" items="${myToys}" >
    <c:out value="${toy}" escapeXml="false" /><br />
</c:forEach>

---

Greetings from Hamburg,
     Stefan