Hans Bergsten wrote:
Rick Ross wrote:
I can't seem to get this to work:
<%@ includes file="<c:out value='${includePage}' />" %>
I didn't see anything in the Spec that suggests that it would violate spec,
but it wasn't mentioned either (as far as I saw.)
Rick, time to read a good book about JSP ;-) There are two ways to include
files defined by the JSP spec, and JSTL adds a third. The "include" directive
you're using here is a staticly including content. It works just like an
#include in C, and is processed when the JSP page is turned into a servlet.
Hence, the file name is fixed; you can't define it as a dynamic value, not even if you use correct syntax (tags can never be used as attribute values) ;-)
Since I need the contents of "includePage" to be processed as JSP, I think I
am SOL and will have to wrap it in a choose/when tag
<c:choose> <c:when test="${includePage == 'somepage.jsp' > <%@ includes file="somepage.jsp" %> </c:when> </c:choose>
Am I missing something? The reference is always local, but when I tried <c:import> It wouldn't process the JSTL tags in somepage.jsp.
Do you declare the JSTL tag libraries in somepage.jsp? A dynamically included/imported page is processed as a completely separate entity, so it doesn't know about any tag library declarations you've made in the importing page.
I appreciate any feedback
You can either use the standard <jsp:include> tag:
<jsp:include page="<%= includePage %>" />
or the JSTL <c:import> tag:
<c:import url="${includePage}" />
The main differences are that you must use a Java expression as the attribute value for <jsp:include> in JSP 1.2 (in JSP 2.0, you can use an EL expression) and that the semantics for <c:import> are better defined for error cases (e.g., page not found). <c:import> is also able to include data from external resources, like a different web app in the same server or even from a different server; <jsp:include> only support include of resources in the same web app.
Hope this helps, Hans
-- Hans Bergsten <[EMAIL PROTECTED]> Gefion Software <http://www.gefionsoftware.com/> Author of O'Reilly's "JavaServer Pages", covering JSP 1.2 and JSTL 1.0 Details at <http://TheJSPBook.com/>
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