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Error using JTL XML taglib - xml attribute does not accept any expressions

I am getting the following error when I try to use the JSTL XML tag:

/server-side-transform.jsp(51,0) 
According to TLD or attribute directive in tag file,
attribute xml does not accept any expressions

I am looking into tlds etc, but if anyone knows this might save me then it would be appreciated!

If it helps, I get this error when running the example code

<c:set var="xml">
  <paragraph>
    This document uses <bold>unusual</bold> markup,
    which we want to replace with <bold>HTML</bold>.
  </paragraph>
</c:set>

<c:set var="xsl">
  <?xml version="1.0"?>
  <xsl:stylesheet
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">

    <xsl:template match="paragraph">
      <p><xsl:apply-templates/></p>
    </xsl:template>

    <xsl:template match="bold">
      <b><xsl:value-of select="."/></b>
    </xsl:template>
  </xsl:stylesheet>

</c:set>

<x:transform xml="${xml}" xslt="${xsl}"/>

in my / server -side-transform.jsp - my taglib directives:

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

and I have standard.jar and jstl.jar in / WEB-INF / lib.

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6 answers


Your code is picking up the "wrong" version of x-1_0.tld, possibly due to classpath issues. I see, for example, in my current classpath, I have one version x-1_0.tld that ALLOWS runtime-expression $ {syntax} in that tag, and the other doesn't. One in the standard .jar does not allow EL expressions, and the one I have at the dock does.



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I found that Sun documentation refers to URIs as

http://java.sun.com/jsp/jstl/xml



The tag is now being called correctly, so this caused the problem; however i am getting NullPointerException in doEndTag () ... ho hum

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Not really, you should use

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

use JSTL 1.1.

Unfortunately standard.jar files include many versions of the * .tld tag, for example.

  • c-1_0-rt.tld
  • c-1_0.tld
  • c.tld
  • fmt-1_0-rt.tld
  • fmt-1_0.tld
  • fmt.tld
  • fn.tld
  • permittedTaglibs.tld
  • scriptfree.tld
  • SQL-1_0-rt.tld
  • SQL-1_0.tld
  • sql.tld
  • x-1_0-rt.tld
  • x-1_0.tld
  • x.tld

so using

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

you are telling jsp to specifically use JSTL 1.1 which btw fixes the above issue, if that doesn't work try using

<%@ page isELIgnored="false" %>

which basically tells jsp to evaluate EL.

/ Srm

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Use the following code:

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

Instead:

<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %>
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I realize this question was asked quite a while ago, but I ran into the same problem. In my case, the example below led me to use:

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

When should I have used:

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

I was looking at the solution for a while until there was an extra jsp in the uri.

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change <% @taglib prefix = "c" uri = "http://java.sun.com/jstl/core"%> doesn't work for me. for my project (web application version = "3.0") IDE (MyEclipse) I can see the x.tld config file. There is a false select that does not allow apperance $ {} or <% =%> to be selected. So I managed to trick the web.xml file.

  • <jsp-config> <taglib> <taglib-uri>/huang</taglib-uri> <taglib-location>/WEB-INF/x.tld</taglib-location> </taglib> </jsp-config>

    add to web.xml

  • declare new name taglib-url "huang" for my jsp file like this:

    <%@ taglib prefix="x" uri="/huang" %>

  • use <x:out select="$casexml//ζ‘ˆδΎ‹//${node.name }" />

    I can get the correct result

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