Expression Language Result Type

Question

Do EL statements only evaluate to String and primitive types? I have code similar to the following in my jsp:
<logic:iterate name="uriList" id="uri">
  <bean:write name="uriValueMap" property="${uri}"/>
</logic:iterate>Where uriList is an object of type java.util.List only containing java.net.URI objects, and where uriValueMap is of type java.util.Map and has only java.net.URI objects in its key set.
As a result, I end up getting the following exception:
javax.servlet.ServletException: Invalid argument looking up property:
"http://namespace-uri.org" of bean: "uriValueMap"Is there any way to preserve the java.net.URI type as a lookup key?

Answer 1

The issue here is that you are using a bean:write
tag.
The bean write tag does not handle maps. It is
looking for a method
uriValueMap.getHttp://namespace-uri.org()
The thing is that the bean write tag does handle maps. I've got another block of code in the same jsp file that's similar to the block of code I posted. The only real difference between the two is that the underlying list and key set have String objects instead of URI objects, and it works fine.
The following in JSTL should work:
<c:out value="${uriValueMap[uri]}"/>
Thanks, I'll use that instead.