I have been trying to solve a mystery concerning EL.
We are using 4 taglibs in our project:
<%-- JSTL tag libs --%>
<%@ taglib prefix="fmt" uri="/WEB-INF/fmt.tld" %>
<%@ taglib prefix="c" uri="/WEB-INF/c.tld" %>
<%-- Struts provided Taglibs --%>
<%@ taglib prefix="html" uri="/WEB-INF/struts-html-el.tld" %>
<%@ taglib prefix="logic" uri="/WEB-INF/struts-logic-el.tld" %>
They are working fine and respond to EL included in their tags.
However, if we try to use EL outside of a tag it simply renders the EL into the
HTML.
${login.fullName} appears as ${login.fullName} on the rendered page.
<c:out value="${login.fullName}"/> renders as the user full name.
In trying to track down why the naked EL won't work I added isELIgnored="false"
to the page directive for the page and if we are not using any tags with EL in
them it works. The naked EL will render what we are expecting. But as soon as
we have a tag with EL in a value or other attribute the page will error on
compile.
I'm confused because I thought EL was active by default and it does work in our
tags but not outside of any tags. Once we place the isELIgnored="false" in the
page directive the EL works outside of the tags but fails when used inside some
of the tags.
Can some one shed some light on this mystery? Also I have heard that using EL
outside of tags can be a security problem and that it is better to use a <c:out
value="${EL}"/> instead.
Thanks,
Kurt
--
Kurt Williams
Marex Services
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