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Asked: 2026-05-11T07:12:39+00:00

I get the following error: javax.servlet.ServletException: Cannot find a matching 1-argument function named {http://exslt.org/dynamic}evaluate()

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I get the following error:

javax.servlet.ServletException: Cannot find a matching 1-argument function named {http://exslt.org/dynamic}evaluate() at org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:841) at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:774)

The top of my xslt file is

<?xml version='1.0' encoding='UTF-8'?> <xsl:stylesheet      xmlns:xsl='http://www.w3.org/1999/XSL/Transform'      version='1.0'        xmlns:dyn='http://exslt.org/dynamic'      extension-element-prefixes='dyn'>

Do you know why I may be getting this error?

UPDATE

The top of my XML file now reads.

<?xml version='1.0' encoding='UTF-8'?> <xsl:stylesheet       xmlns:xsl='http://www.w3.org/1999/XSL/Transform'       version='1.0'      xmlns:xalan='http://xml.apache.org/xalan'       exclude-result-prefixes='xalan'>

and the XML where we are failing is

<xsl:template name='test'>   <xsl:param name='param' />   <xsl:value-of select='$param'/>   <xsl:value-of select='xalan:evaluate($param)'/> </xsl:template>

This codes works on one server running Tomcat 5.0 but is not working on a server running Tomcat 5.5. I imagine because the code is working on one server and not it is an environmental problem.

The XSLT is being applied to the XML via a JSP page. To me it looks like the xalan.jar file is not being used. The top of the JSP is:

<%@page import='javax.xml.transform.*'%> <%@page import='javax.xml.transform.stream.*'%> <%@page import='         java.security.Principal,              java.net.URL,               java.net.URLConnection,               java.io.InputStream,              java.io.InputStreamReader,              java.io.Reader,              java.io.BufferedReader,              java.io.File,              javax.xml.transform.*,              javax.xml.transform.stream.*,              javax.xml.transform.*,              javax.xml.transform.stream.*'%>

Update The problem is that Saxon is being chosen as the XML parser. Saxon does not support this functionality. Removing the Saxon.jar fixes the problem.

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1 Answer

  1. Somewhere in your XSLT you’re referring to a function named ‘{http://exslt.org/dynamic}evaluate()’ and you’re not giving it the number of arguments it expects.

    Or… it’s unable to find the extensions you’re adding.

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