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The application, session and request objects are available from within s tags in jsp wherever ognl can be evaluated. Use the #application, #session, or #request syntax to get the object and access values by their keys using ['key'].

<s:property value="#application['foo']"/>
<s:property value="#session['baz']"/>

Conversely, if you would like to make Struts 2 objects available to a JSP/JSTL scope, the s:set tag may be used like this:

<s:set name="jobz" value="jobs" scope="request" />
<c:forEach items="${jobz} var="job">
...
</c:forEach>

A full example below shows a struts variable "jobs" being exposed as "jobz" and being used with jstl and the display tag.

Exposing framework objects to JSTL, with a JSTL and DisplayTag Example