I also ran into this problem. I think this is a bug
with Orion. Each application deployed to Orion should
get its own unique classloader, which is distinct not
only from all other applications, it is also distinct
from the classloader that Orion uses for itself.
Vimal
--- Mark Kettner <[EMAIL PROTECTED]> wrote:
> :Hello all,
>
> In our web application we use an old version of
> xerces. We deploy the
> application with xerces.jar in the
> WEB-INF/lib directory.
> However, when the application is started we get the
> error:
>
> java.lang.ClassNotFoundException:
> org.apache.xerces.parsers.SAXParser
> at
>
org.xml.sax.helpers.XMLReaderFactory.createXMLReader(XMLReaderFactory.java:118)
> at
>
com.fredhopper.frob.question.QuestionManager.loadQuestions(QuestionManager.java:163)
> at
>
com.fredhopper.frob.question.QuestionManager.loadQuestions(QuestionManager.java:78)
> at
>
com.fredhopper.frob.FredEngine.init(FredEngine.java:373)
> at
>
com.fredhopper.frob.FredEngine.startingUp(FredEngine.java:138)
> at
>
com.fredhopper.jsp.Bridge$EngineInServletContainer.fredhopper(Bridge.java:837)
> at
>
com.fredhopper.jsp.Bridge$EngineInServletContainer.run(Bridge.java:779)
>
> A bit cryptic, because SAXParser is in fact
> available twice (once in our
> application and once in the
> 'global' orion space).
>
> A solution is:
> 1) Move the following jars:
> crimson.jar
> jaxp.jar
> parser.jar
> xalan.jar
> 2) Move our own xerces.jar in orion home directory
> 2) Start orion as follows:
> java -Xbootclasspath/a:xerces.jar -jar orion.jar
>
> This is not a real solution, because we also had to
> remove the encoding
> attribute out of the application.xml and web.xml.
> And this should then
> be done for every application you deploy on the
> application server.
>
> Shouldn't it be that when the application server
> looks for a class, it
> first looks in the classes directory of that web
> application, then in
> the lib directory of the web application and if it
> still can't resolve
> the class it looks in the global space (not a good
> idea, since this
> depends on which application server you use, but
> trade of to save memory
> usage)?
> So is this a bug in orion, or are we doing something
> wrong here?
>
> Mark
>
> --
> --o-o----------
> Mark Kettner
> http://www.fredhopper.com
> Amsterdam, The Netherlands
> Phone: +31 20 3206203 Mobile: +31 620 609 817
> fax: +31 20 8848747
> E-mail: [EMAIL PROTECTED], [EMAIL PROTECTED]
>
>
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