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

<ww:property value="#application.foo"/>

<ww:property value="#session.baz"/> // or <ww:property value="#session['baz']"/>

Conversely, if you would like to make webwork objects availible to say the jsp/jstl request scope. The property tag can be used like this.

You no longer have to use the set tag to use objects in JSTL - they are automatically provided in WW 2.2.x.
<ww:set name="jobz" value="jobs" scope="request" />

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

WW:Exposing webwork objects to JSTL, with a JSTL and DisplayTag Example