Actually, in the JSP context application.getResource invokes the
javax.servlet.servletContext.getResource() method, and - quoting the
Javadocs:
"This method has a different purpose than java.lang.Class.getResource, which looks up
resources
based on a class loader. This method does not use class loaders."
So application.getResource("/BalancesMapping.xml") returns null with
BalancedMapping.xml
located in WEB-INF/classes.
Using application.getResource("/WEB-INF/classes/BalancesMapping.xml") will give me
a valid URL, but it still won't apply the mapping.
Tim
On 2002-12-12 23:37 Stephen Ince wrote:
> The mapping.xml needs to be in the classpath.
>
> If the mapping file is located at WEB-INF/classes/BalancesMapping.xml then
> you can use the
> application.getResource("/BalancesMapping.xml") to load the file.
>
> This can also be put in a jar file under "WEB-INF/lib" and it should be able
> to load.
>
> Steve
>
>
>
>
>
>
> ----- Original Message -----
> From: "Tim Holloway" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Thursday, December 12, 2002 10:30 PM
> Subject: [castor-dev] Mapping for Tomcat in a WAR
>
>
> > I'm trying to marshal out a collection of JavaBeans to XML using Castor
> > from a
> > JSP in a WAR being served up from Tomcat.
> >
> > I tried the easy way out first - just passed the object (a
> > java.util.List) to the static marshalling method. This, alas, simply
> > results in a NullPointerException when Castor invokes the
> > org.apache.xml.serialize.Printer.
> >
> > After about 3 hours of trying to figure out NullPointerException, I
> > set up a mapping, having finally realized that even had the
> > serialization not failed, there was no obvious place to name the extra
> > XML tags needed to do the job decently. Got that working in a standalone
> > app, output XML and was ready for the Big Time - making the XML come out
> > from within a JSP.
> >
> > Now comes the question: How do I get the mapping applied to the
> > marshalling process when the mapping is no longer in a discrete file,
> > but rather
> > in a subfile of a WAR? I did a:
> >
> > out.println("URL for mapping='" +
> > application.getResource("/WEB-INF/BalancesMapping.xml") + "' <br>");
> > out.println("Mapping is " + mapping );
> >
> > and got:
> >
> > URL for mapping='jndi:/localhost/mywebapp/WEB-INF/BalancesMapping.xml'
> > Mapping is org.exolab.castor.mapping.Mapping@fbbbc
> >
> > Feeding that URL to construct a mapping throws no exceptions, but when I
> > apply the mapping to a constructed marshaller, like so:
> >
> > Marshaller marshaller = new Marshaller( out );
> > marshaller.setMapping( mapping );
> > marshaller.marshal( list );
> >
> > I get the same NullPointerException stacktrace as if I had set no
> > mapping at all.
> >
> > Can someone tell me how to do this properly?
> >
> > Thanks!
> >
> > Tim Holloway
> >
> > -----------------------------------------------------------
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> >
> >
>
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