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Re: [jetty-users] Custom JAR visible to web applications
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Can you post the stacktrace? Do any of the classes in jar in lib/ext
depend on classes that are inside the webapp or one of its jars? Do
you have the jar in question in both lib/ext and inside the webapp as
well?
It would be worthwhile if you compare your webapp to the standard
test-spec.war that is part of the demo-base in the standard
distribution - it uses some jars inside demo-base/lib/ext.
Jan
On 23 July 2014 21:37, Ney André de Mello Zunino <zunino@xxxxxxxxxxxxxxx> 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 <zunino@xxxxxxxxxxxxxxx> 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
>>> _______________________________________________
>>> jetty-users mailing list
>>> jetty-users@xxxxxxxxxxx
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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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--
Jan Bartel <janb@xxxxxxxxxxx>
www.webtide.com
'Expert Jetty/CometD developer,production,operations advice'