I have a web application that uses commons XML (xml-apis-1.3.03.jar).  The
usage of javax.xml.xpath.XPathFactory.newInstance() works fine in the
Eclipse debugger, but when the code is packaged into a WAR and deployed to
Tomcat, I get a NullPointerException when
javax.xml.xpath.XPathFactory.newInstance() is called:



java.lang.NullPointerException
        at
javax.xml.xpath.XPathFactoryFinder._newFactory(XPathFactoryFinder.java:222)
        at
javax.xml.xpath.XPathFactoryFinder.newFactory(XPathFactoryFinder.java:143)
        at javax.xml.xpath.XPathFactory.newInstance(XPathFactory.java:185)
        at javax.xml.xpath.XPathFactory.newInstance(XPathFactory.java:99)
        at
com.myorg.myapp.ws.notification.impl.ExtnMessagePatternFilter.accepts(ExtnMessagePatternFilter.java:69)
        at
org.apache.muse.ws.notification.impl.FilterCollection.accepts(FilterCollection.java:64)
        at
com.myorg.myapp.ws.notification.impl.BufferedSubscriptionManager.publish(BufferedSubscriptionManager.java:73)
        at
com.myorg.myapp.ws.notification.impl.NewsNotificationProducer.publish(NewsNotificationProducer.java:38)
        at
org.apache.muse.ws.notification.impl.SimpleNotificationProducer.publish(SimpleNotificationProducer.java:420)
        at com.myorg.myapp.ws.handler.DDSHandler.run(DDSHandler.java:304)
        at
com.myorg.commons.util.reactor.ReactorAdapter.run(ReactorAdapter.java:19)
        at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
        at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
        at java.lang.Thread.run(Thread.java:619)



Any idea what might be going wrong here?

Thanks,
-David
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