JSP works, JSTL doesn't

Robert Metzger · Sep 23, 2005

I am trying to use JSTL with JSP.
I have Tomcat 4.1.31 installed and it responds properly to access
..jsp's for my application. It processes pages with standard JSP tags
(such as jsp:include) correctly.

However, when I try to use JSTL tags, either to access the standard-examples,
or to access my application, I get errors.

I am following the instructions in
java.sun.com/developer/technicalArticles/javaserverpages/faster/index.html
"Faster Development with JavaServer Pages Standard Tag Library"

I have installed jakarta-taglibs-standard-1.1.2, and copied jstl.jar and
standard.jar to ../webapp/myappname/WEB-INF/lib

For example, I click through to standard-examples/elsupport/Out.jsp
and get the following message:

org.apache.jasper.JasperException:
This absolute uri (http://java.sun.com/jsp/jstl/core) cannot be resolved in
either web.xml or the jar files deployed with this application

Checking

.../web/jakarta-tomcat-4.1.31/webapps/standard-examples/WEB-INF/lib
jstl.jar
standard.jar

.../web/jakarta-tomcat-4.1.31/webapps/myappname/WEB-INF/lib
jstl.jar
standard.jar

The files are identical between the directories.

If I access the following stub page from my application

<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %>
<html>
<body>
<c

ut value="${header['User-Agent']}"/>
</body>
</html>

I get the following error message:

org.apache.jasper.JasperException:
/e.jsp(4,0) No such tag out in the tag library imported with prefix c

Thanks for any suggestions on getting JSTL working.

Tor Iver Wilhelmsen · Sep 23, 2005

I have installed jakarta-taglibs-standard-1.1.2, and copied jstl.jar and
standard.jar to ../webapp/myappname/WEB-INF/lib

But have you also added a taglib.tld to the app and altered web.xml to
point at the taglib?

<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %>

This should be complemented by

<taglib>
<taglib-uri>http://java.sun.com/jstl/core</taglib-uri>
<taglib-location>/WEB-INF/tlds/jstl.tld</taglib-location>
</taglib>

or the like in your webapp.

Ulrich Hobelmann · Sep 24, 2005

Tor said:
But have you also added a taglib.tld to the app and altered web.xml to
point at the taglib?

Where do you get the .tld? And why doesn't any documentation or
tutorial mention this? (just wondering, since I got the same error, and
nobody knew a solution)

This should be complemented by

<taglib>
<taglib-uri>http://java.sun.com/jstl/core</taglib-uri>
<taglib-location>/WEB-INF/tlds/jstl.tld</taglib-location>
</taglib>

or the like in your webapp.

So you need to create a tld file? What does it look like?

Tor Iver Wilhelmsen · Sep 24, 2005

Ulrich Hobelmann said:
Where do you get the .tld?

In the distribution.

And why doesn't any documentation or
tutorial mention this?

Sun's tutorial does:

http://www.developer.com/java/ejb/article.php/1447551

"Copy the JSTL TLD files to Tomcat's web-inf directory.

The web-inf directory is likely at this location: C:\Program
Files\Apache Tomcat 4.0\webapps\ROOT\WEB-INF. If you examine the JSTL
distribution files, you should notice eight files that end with the
TLD extension. All eight files should be copied to your web-inf
directory."

Ulrich Hobelmann · Sep 24, 2005

Tor said:
http://www.developer.com/java/ejb/article.php/1447551

"Copy the JSTL TLD files to Tomcat's web-inf directory.

Ah, thanks!

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JSP works, JSTL doesn't

Robert Metzger

Tor Iver Wilhelmsen

Ulrich Hobelmann

Tor Iver Wilhelmsen

Ulrich Hobelmann

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