MediaLookup isn't working in a certain JSP file

Question

Hi there!
This is my first time around here (I was in the original ATG Forum though) and I'm looking for your guidance about this odd behavior in my project...
I'm using MediaLookup droplet to show an image in the home page. This is the code I'm using:
     <dsp:droplet name="/atg/commerce/catalog/MediaLookup">
          <dsp:param name="id" value="defaultIMGProd"/>
          <dsp:setvalue param="media" paramvalue="element"/>
          <dsp:oparam name="output">
               <dsp:getvalueof var="imageURL" vartype="java.lang.String" param="media.url"/>
               <c:if test="${not empty imageURL}">
                    <img height="80px" width="80px" src="${imageURL}"/>
               </c:if>
          </dsp:oparam>
     </dsp:droplet>
And it works fine...
But when I copy the same code in a different JSP (to show this same image in the catalog, next to each product), it doesn't work at all, and it throws this error message:
12:30:41,485 INFO [MediaLookup] DEBUG Find item: id=defaultIMGProd; type=media
12:30:41,486 INFO [MediaLookup] DEBUG Item Found:media-internal-binary:defaultIMGProd(/ContenidoAdministrable/Catalogo/defaultIMGCatProd.jpg)
12:30:41,486 ERROR [DynamoServlet] atg.servlet.ServletResources->dynamoHttpServletRequestCantAccessProperty : getParameter(media.url) can't access property url in class atg.adapter.gsa.GSAItem
I just can't think on a reason why this is working in one JSP but isn't working in other one...
Any suggestions will we appreciated :)
Thanks!
Waldo.-
Edited by: user12845432 on 25-may-2012 9:41

Answer 1

Hi ,
The issue may be because you are using paramvalue="element" .
In the new jsp element may be referring to something else , due to nesting of droplets.
its better to use elementName attribute :
eg :
You may be using like this :
<dsp:droplet name="XYZ">
<dsp:param name="inputparam" param="inputparam" />
<dsp:oparam name="output">
<dsp:droplet name="/atg/commerce/catalog/MediaLookup">
<dsp:param name="id" value="defaultIMGProd"/>
<dsp:setvalue param="media" paramvalue="element"/>
<dsp:oparam name="output">
<dsp:getvalueof var="imageURL" vartype="java.lang.String" param="media.url"/>
<c:if test="${not empty imageURL}">
<img height="80px" width="80px" src="${imageURL}"/>
</c:if>
</dsp:oparam>
</dsp:droplet>
</dsp:oparam>
</dsp:droplet>
Instead use like this :
<dsp:droplet name="XYZ">
<dsp:param name="inputparam" param="inputparam" />
*<dsp:param name="elementName" value="mediaItem" />*
<dsp:oparam name="output">
<dsp:droplet name="/atg/commerce/catalog/MediaLookup">
<dsp:param name="id" value="defaultIMGProd"/>
*<dsp:setvalue param="media" paramvalue="mediaItem"/>*
<dsp:oparam name="output">
<dsp:getvalueof var="imageURL" vartype="java.lang.String" param="media.url"/>
<c:if test="${not empty imageURL}">
<img height="80px" width="80px" src="${imageURL}"/>
</c:if>
</dsp:oparam>
</dsp:droplet>
</dsp:oparam>
</dsp:droplet>
~ Praveer