Also note that I just tried upgrading from JAXB 1.0.1 to the JAXB in
JWSDP 1.4, and although I can see the generated code is slightly
different (and the api jars are much larger), the results wrt my
exception are identical. It's curious that the manifest.mf in the
jaxb-api.jar still says 1.0.1 in both the old and new versions. There
are other differences, however, even in the manifest.mf file.
> -----Original Message-----
> From: Karr, David
>
> For a little more information, it's clear that my current
> error is a classloader problem, because the line it appears
> to be failing on is trying to cast the
> "DefaultJAXBContextImpl" object to a "JAXBContext", but
> that's the direct superclass of "DefaultJAXBContextImpl".
>
> Also, that bug id I quoted is referring to a
> ClassNotFoundException, not a ClassCastException, so it might
> not be exactly the same problem.
>
> > -----Original Message-----
> > From: Karr, David
> >
> > I'm using JAXB 1.0.1, with WebLogic 8.1SP3.
> >
> > I have two EARs deployed to a domain. The first EAR has
> > several ejb and web modules. One of the web modules
> > registers a set of mbeans. In the other EAR, a servlet
> > invokes a method on one of the mbeans, whose return type is a
> > JAXB-generated type. The method in the mbean tries to create
> > a JAXBContext to unmarshal a stream into a JAXB object
> > hierarchy and then returns the top-level object.
> >
> > I've struggled through a handful of classloader-related
> > issues in the single call to create the JAXBContext. To get
> > past the issues with finding the jaxb.properties file and the
> > ContextFactory_1_0_1 class, I passed an instance of a simple
> > custom ClassLoader to the
> > JAXBContext.newInstance() method, which just uses the current
> > context class loader to load the named entities.
> >
> > My current error looks like this (the package hierarchy
> > specific to my project is elided):
> >
> > java.lang.ClassCastException:
> > ...jaxb.impl.runtime.DefaultJAXBContextImpl
> > at
> > javax.xml.bind.JAXBContext.newInstance(Ljava.lang.String;Ljava
> > .lang.Clas
> > sLoader;)Ljavax.xml.bind.JAXBContext;(JAXBContext.java:281)
> >
> > I haven't been able to figure out why this is happening.
> >
> > I noticed in the Sun bug database, bug #4860458 is titled
> > "ClassNotFoundException:
> > org.oasis.ubl.order.impl.runtime.DefaultJAXBContextImpl". It
> > says the bug was found in release 1.0.1, and it is fixed. It
> > doesn't say which release the bug is fixed in.
> >
> > Does anyone know about this problem, or the bug report I
> > refer to? It would be useful to know what was found to be
> > wrong, whether there is a workaround in v1.0.1, and what
> > release the bug was fixed in.
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