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Re: [jetty-users] Problems precompiling with Jasper2 in Jetty8

Thanks for the reply.


I don't have anything in the WEB-INF/lib directory. 


I do have both javax.servlet.jsp.jstl-1.2.0.v201105211821.jar and org.apache.taglibs.standard.glassfish-1.2.0.v201112081803.jar on the classpath.  This is correct, right?



From: jetty-users-bounces@xxxxxxxxxxx [mailto:jetty-users-bounces@xxxxxxxxxxx] On Behalf Of Joakim Erdfelt
Sent: Thursday, November 08, 2012 10:06 AM
To: JETTY user mailing list
Subject: Re: [jetty-users] Problems precompiling with Jasper2 in Jetty8


Make sure you don't have any conflicting jars between what is in your WEB-INF/lib and what is in ${jetty.home}/lib/jsp


Keep in mind that Jetty itself, and even the maven plugin, isolates these differences for you with a webapp classloader.

But with ANT you have no such safety net, so you have to be extra careful to not have duplicate classes in both places.


A common scenario for that error is having 2 different (jstl) standard taglib jars.


Joakim Erdfelt <joakim@xxxxxxxxxxx>

Developer advice, services and support
from the Jetty & CometD experts

On Thu, Nov 8, 2012 at 8:40 AM, Johnson, Wayne <Wayne_Johnson@xxxxxxx> wrote:

I am migrating a webapp from Jetty6 (stop laughing, it's worked well for years) to Jetty8 and I'm getting the following error:

org.apache.jasper.JasperException: file:D:/dev/HEAD/eadev/clients/java/cfgmgr/jsp/displayAttribute.jsp(7,62) PWC6188: The absolute uri: cannot be resolved in either web.xml or the jar files deployed with this application

This compile use to work in Jetty 6 but now fails.  I see this in quite a few places in a Google search, but most appear in reference to this error when loading the webapp, not when precompiling it.

I tried changing the Ant task to follow joakime suggested task at but to no avail.

I am using 8.1.7.v20120910, but I get the same error with 7.6.7.v20120910.

The webapp is precompiled using an Ant task with the following target:
  <target name="jspc" depends="init, version_compile, mqservlets">

    <path id="jasper2.classpath">
      <fileset dir="${env.JETTY_HOME}">
            <include name="lib/servlet-api-*.jar" />
            <include name="lib/jsp/*.jar" />

    <pathconvert property="jasper2.classpath" refid="jasper2.classpath" />
    <echo message="jasper2.classpath=${jasper2.classpath}" />

    <mkdir dir="${webcfgmgr}/jsp/servlets"/>
    <taskdef classname="org.apache.jasper.JspC" name="jasper2" classpathref="jasper2.classpath"/>


The classpath output is:
     [echo] jasper2.classpath=D:\dev\jetty-distribution-8.1.7.v20120910\lib\jsp\com.sun.el-2.2.0.v201108011116.jar;D:\dev\jetty-distribution-8.1.7.v20120910\lib\jsp\javax.el-2.2.0.v201108011116.jar;D:\dev\jetty-distribution-8.1.7.v20120910\lib\jsp\javax.servlet.jsp-2.2.0.v201112011158.jar;D:\dev\jetty-distribution-8.1.7.v20120910\lib\jsp\javax.servlet.jsp.jstl-1.2.0.v201105211821.jar;D:\dev\jetty-distribution-8.1.7.v20120910\lib\jsp\org.apache.jasper.glassfish-2.2.2.v201112011158.jar;D:\dev\jetty-distribution-8.1.7.v20120910\lib\jsp\org.apache.taglibs.standard.glassfish-1.2.0.v201112081803.jar;D:\dev\jetty-distribution-8.1.7.v20120910\lib\jsp\org.eclipse.jdt.core-3.7.1.jar;D:\dev\jetty-distribution-8.1.7.v20120910\lib\servlet-api-3.0.jar

The source line this barfs on is:
<%@ taglib prefix="c" uri="" %>

Anyone have any suggestions?  Thanks for any help you can give me.
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