Hi
I had a similar issue the other day, I received this NoClassDefFound error
when I had mistakenly placed the jar file in my WEB-INF/lib with the
version number in the filename when the original jar already existed in
WEB-INF/lib as well without the version.
What I mean is that I had myjar.jar and deployed myjar-1.0.jar as well. The
class in myjar-1.0 was not being loaded.
Removing the version number from myjar's POM resulted in it building to
myjar.jar and all worked thereafter.
On Wed, Jul 23, 2014 at 1:37 PM, Ney André de Mello Zunino <
zun...@softplan.com.br> wrote:
> Hi and sorry for the missing details; here they are:
>
> I'm using Jetty 9.2.1 running on OpenJDK 7.
>
> My shared JAR has been placed in my '${jetty.home}/lib/ext' which,
> AFAIC, is the same as '${jetty.base}/lib/ext', since I'm not specifying
> a different base. Am I right? The classes in the shared JAR have nothing
> special about them. They don't use annotations.
>
> My webapp is a very simple Servlet 2.4 application. It contains a filter
> which indeed makes use of a couple of classes in the shared JAR. And
> here's where the 'NoClassDefFound' error occurs. The app's also got a
> Servlet which references classes in the shared JAR. And that's about it.
>
> As I said in my original message, the JAR is definitely being added to
> the classpath reported by 'java -jar start.jar --list-classpath'. I've
> read about the fact that web applications prioritize libraries and
> resources within their 'WEB-INF', but I expected the container's
> classpath to be visible as well. Surely, I must be missing something.
>
> Anything else I should add?
>
> Thank you!
>
> On 22-07-2014 20:00, Jan Bartel wrote:
> > You don't say which version of jetty, nor the circumstances in which
> > the class should be found - is it a servlet/filter/listener or a pojo
> > or via an annotation or ...?
> >
> > Have you put your jar in your ${jetty.base}/lib/ext or in the top
> > level ${jetty.home}/lib/ext? Did you enable the ext module in
> > ${jetty.base} or in ${jetty.home}?
> >
> > Jan
> >
> > On 23 July 2014 00:03, Ney André de Mello Zunino <zun...@softplan.com.br>
> wrote:
> >> Hello.
> >>
> >> I'm new to Jetty and I have a question regarding class paths. I wish to
> >> have a custom library (JAR) shared by multiple applications running in
> >> the container. I added the JAR file to '<JETTY_HOME>/lib/ext' and
> >> verified that it is actually being added to the CLASSPATH by running
> >> 'java -jar start.jar --list-classpath'. However, 'NoClassDefFound'
> >> errors occur when the web application is run.
> >>
> >> How can I make my custom JAR visible to the web application? Ideally, I
> >> wish I could do that without modifying the WAR deployment so that newly
> >> added applications would also have the custom JAR on their CLASSPATH
> >> without extra configuration.
> >>
> >> Thank you in advance and sorry if the question is too trivial. I admit I
> >> haven't been able to find a proper solution (given my requirements).
> >>
> >> --
> >> Zunino
> >> _______________________________________________
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> >
> >
> >
>
> --
> Ney André de Mello Zunino
> Analista de Pesquisa e Desenvolvimento
> Softplan/Poligraph
> +55 48 3027-8000
> www.softplan.com.br
> twitter.com/softplanonline
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