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From Tomasz Łazarecki <tomasz.lazare...@gmail.com>
Subject Re: NoClassDefFoundError running embedded jackrabbit in servlet
Date Thu, 15 Apr 2010 15:34:05 GMT
You should check if your classpath contains jcr.jar. If not you should add
jcr.jar to your classpath.

Tomasz Łazarecki

2010/3/29 Rob Brown <rlb.south@gmail.com>

> Hello,
> I'm getting the above mentioned error when trying to access a repository
> from a servlet. I am not using the jackrabbit war because I want to ensure
> all access to the repository goes through my application's code.
> If I do the exact same thing from a Swing window the error does not occur.
> The problem seems to be related to class loading from a servlet. I have got
> the same results in Tomcat 5.5 and in the eclipse embedded web server.
> To test I created a small web application. I have attached a small zip
> including source code and config files (I did not include the
> jackrabbit-standalone-2.0.0.
> jar due to its size). The following steps will recreate the error:
> start eclipse
>     last tested with eclipse-jee-galileo-SR1-linux-gtk.tar.gz
> create a dynamic web project:
>  copy index.html & repository.xml into WebContent folder
>  copy web.xml into WebContent/WEB-INF folder (overwrite existing)
>  copy log4j.xml into src source folder
>  create test namespace under src source folder
>  copy ClassDefDemoServlet.java into test namespace
>  add jackrabbit-standalone-2.0.0.jar to build path
> run project on server
> click button on index.html
> exception has 2 parts:
>     java.lang.NoClassDefFoundError: javax/jcr/Repository
>     java.lang.ClassNotFoundException: javax.jcr.Repository
> I found a link to a similar issue that may relate to what's happening:
> http://www.eclipse.org/forums/index.php?t=tree&goto=87658&#page_top
> The first reply to this query says:
> "That can happen e.g. if your class is found but it executes a static
> initialiser (i.e. a public static final assignment) that uses another class
> that's not exported by the system bundle."
> I'm not using Equinox or anything other than Eclipse for EE developers.
> Perhaps it's related to a bundle issue within jackrabbit.
> I would appreciate any assistance you can offer. If accessing a repository
> in this way (i.e. not using the jackrabbit war) is not a good idea perhaps
> there is an alternative that allows me to channel all requests exclusively
> through my servlet code.
> Also thanks so much for your work on jackrabbit. In spite of the odd bump
> geting started this is one of the finest libraries I have ever worked with.
> I can hardly wait to finish integration testing and use it to replace our
> web app's existing backend.
> Rob

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