JSP question

jack · Dec 8, 2003

Hi all,

I met one problem in JSP testing page:
Page like:

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<html>
<body>
<c:set var="myvar" value="blabla"/>
<c

ut name="${myvar}"/>
</body>
</html>

I expect the output is "blabla", but the actually output is
"${myvar}". Seems the JSP doesn't treat "${myvar}" as variable.

I am using JWSDP1.3

Thanks in advance.

Jack

Christophe Vanfleteren · Dec 8, 2003

jack said:
Hi all,

I met one problem in JSP testing page:
Page like:

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<html>
<body>
<c:set var="myvar" value="blabla"/>
<cut name="${myvar}"/>
</body>
</html>

I expect the output is "blabla", but the actually output is
"${myvar}". Seems the JSP doesn't treat "${myvar}" as variable.

I am using JWSDP1.3

Does JWSDP1.3 come with tomcat 5 ? If so, it is running JSP 2.0, and you
need to use the rt versions of the JSTL taglibraries.

Changing the taglib declaration to
<%@ taglib uri="http://java.sun.com/jsp/jstl/core_rt" prefix="c" %>
should do the trick.

jack · Dec 9, 2003

Christophe,

Thanks for reply. But after I change to
http://java.sun.com/jsp/jstl/core_rt, I got the following error:

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

Here is the versions in JWSDP-1.3
ANT 1.5.4; Tomcat v5; RegExp; Xerces 2.x; Xindice v1.1; Xalan v2.x;
Struts v1.1; BCEL; Apache XML Dsig; Apache xmlenc, XML Security 1_0_6.

It is running on WinXP professional .

Thanks again.

Jack

Are there any other tricks? I am working

news · Dec 9, 2003

um...... isn't it supposed to be <c

ut value="${myvar}"/> ?

me thinks so. at least that's how it is with jstl 1.0.x

jack · Dec 10, 2003

That's what I have in the jsp code. But, instead of give me the value
of "myvar", it just printed out "${myvar}".

Then if I change core to core_rt as Christophe, tomcat won't be able
to parse that file at all, because it can't find core_rt tab lib.

im2kul[at]comcast[dot]net · Dec 10, 2003

jack said:
That's what I have in the jsp code. But, instead of give me the value
of "myvar", it just printed out "${myvar}".

Then if I change core to core_rt as Christophe, tomcat won't be able
to parse that file at all, because it can't find core_rt tab lib.

try changing the uri to:

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

and make sure you use <c

ut value="${myvar}"/> and not the name, as
news had earlier suggested.

-- A

jack · Dec 11, 2003

Thanks for reply.

I can include http://java.sun.com/jstl/core_rt,
but it still didn't show the value of myvar, it still shows "${myvar}".

Is there any other setting I need to change?

Thanks

Jack

im2kul[at]comcast[dot]net said:
jack said:

That's what I have in the jsp code. But, instead of give me the value
of "myvar", it just printed out "${myvar}".

Then if I change core to core_rt as Christophe, tomcat won't be able
to parse that file at all, because it can't find core_rt tab lib.

Click to expand...

try changing the uri to:

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

and make sure you use <cut value="${myvar}"/> and not the name, as
news had earlier suggested.

-- A

Scott Yanoff · Dec 12, 2003

jack said:
Thanks for reply.

I can include http://java.sun.com/jstl/core_rt,
but it still didn't show the value of myvar, it still shows "${myvar}".

Are you using the newest version of JSTL (1.1, I believe)?
http://jakarta.apache.org/taglibs/doc/standard-doc/intro.html

Also, do you have both jstl.jar and standard.jar in your "lib" directory?

I've had success with things like:
<%@ taglib uri="/WEB-INF/c.tld" prefix="c" %>
<c

ut value="${mvar}" />

Make sure you have that trailing slash at the end of the c

ut.
Also, have you tried changing the name of myvar to something else, just
in case there is some weird conflict with the name?

How about referencing the uri locally, as I am doing above?
Do you have the .tld files in your WEB-INF directory?

Good luck,

jack · Dec 15, 2003

Thank you Scott.

I have put those two jar files in both <JWSDP>/common/lib and
<WEBAPPROOT>/WEB-INF/lib. And restart the server several times.

There was no difference. So I am going to try the c.tld solution.

But I don't know what to put in c.tld. Would you please post one for
me?

Thanks in advance.

Jack

Scott Yanoff · Dec 16, 2003

jack said:
Thank you Scott.

I have put those two jar files in both <JWSDP>/common/lib and
<WEBAPPROOT>/WEB-INF/lib. And restart the server several times.

There was no difference. So I am going to try the c.tld solution.

But I don't know what to put in c.tld. Would you please post one for
me?

Didn't the .tld files come with your installation?
In any case, you can get the entire package from
http://java.sun.com/products/jsp/jstl/downloads/index.html

You can pick out what you need from there. The .tld files will go into
the WEB-INF directory.

HTH,

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JSP question

jack

Christophe Vanfleteren

jack

news

jack

im2kul[at]comcast[dot]net

jack

Scott Yanoff

jack

Scott Yanoff

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