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From "Romain Manni-Bucau (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (TOMEE-2113) jsp using xpath expression via select attribute fails with ClassNotFoundException
Date Mon, 14 Aug 2017 07:29:01 GMT

    [ https://issues.apache.org/jira/browse/TOMEE-2113?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16125334#comment-16125334
] 

Romain Manni-Bucau commented on TOMEE-2113:
-------------------------------------------

for reference/link: http://tomee-openejb.979440.n4.nabble.com/Dependencies-of-jstl-implementation-1-2-5-td4682141.html

> jsp using xpath expression via select attribute fails with ClassNotFoundException
> ---------------------------------------------------------------------------------
>
>                 Key: TOMEE-2113
>                 URL: https://issues.apache.org/jira/browse/TOMEE-2113
>             Project: TomEE
>          Issue Type: Bug
>          Components: TomEE Core Server
>    Affects Versions: 7.0.4
>            Reporter: Katya Todorova
>
> Tomee 7.0.4 replaces openejb-jstl.jar with apache taglibs.* (version 1.2.5). 
> Apache taglibs depend strongly on xalan for some tags implementation (e.g. set, forEach,
when, ...) in a way that if xalan is missing on the classpath, there's no fallback to default
jdk implementation but rather a ClassNotFoundException. According to release notes, this is
implemented in the very first release ([1.2.0|https://tomcat.apache.org/taglibs/CHANGES.txt])

> Openejb-jstl (that packs javax.servlet.jstl 1.2) doesn't require xalan but apparantly
has performance  impact (TOMEE-1066)
> The affected tags are not some side functionality but part of JSTL 1.2 specification
(Section 11.1.5) so currently TomEE 7.0.4 is not compliant with JSTL 1.2 as it was in 7.0.3
> Here's an example jsp to reproduce the problem:
> <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
> <%@ taglib prefix="x" uri="http://java.sun.com/jsp/jstl/xml" %> 
> <html>  
> <body>
>     <x:parse var="cat">
>         <a>text</a>
>     </x:parse>
>     <x:set var="myVar" select="$cat//a"/> 	
>    </body>
> </html>  
> And the exception:
> java.lang.ClassNotFoundException: org.apache.xpath.XPath
> 	java.net.URLClassLoader$1.run(URLClassLoader.java:428)
> 	java.net.URLClassLoader$1.run(URLClassLoader.java:417)
> 	java.security.AccessController.doPrivileged(Native Method)
> 	java.net.URLClassLoader.findClass(URLClassLoader.java:416)
> 	java.lang.ClassLoader.loadClass(ClassLoader.java:494)
> 	java.lang.ClassLoader.loadClass(ClassLoader.java:427)
> 	org.apache.taglibs.standard.tag.common.xml.SetTag.setSelect(SetTag.java:74)
> 	org.apache.jsp.test_jsp._jspx_meth_x_005fset_005f0(test_jsp.java:210)
> 	org.apache.jsp.test_jsp._jspService(test_jsp.java:133)
> 	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
> 	javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
> 	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:443)
> 	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
> 	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)
> 	javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
> 	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)



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