It seems that JAXB 2.2.5 is causing a NPE where versions 2.2.4 and older did
not. I wrote a simple test EJB inside a Maven project to demonstrate the
problem and attached the files. I have a class named HashMapWrapper that
contains a HashMap and provides getters and setters into that map. In the
case where an Object value is a nested HashMapWrapper, JAXB throws a NPE when
unmarshaling the XML. I've taken the same test EJB and deployed it in GF
3.1.1 where it works fine, but when I deploy it in 3.1.2, it breaks. Is it
possible (or even a good idea) to either downgrade the version of JAXB in my
local glassfish installation or explicitly use an older version where I do
this kind of marshaling? Could this be a bug or just an inconsistency in my
code that wasn't being caught in earlier versions? The XML it is attempting
to unmarshal is shown below and at the bottom is the exception that is
thrown. Any help would be appreciated. Thanks! Nate <?xml version="1.0"
encoding="UTF-8" standalone="yes"?> NestedKey NameKey NestedWrapper NameKey
OuterWrapper Caused by: java.lang.NullPointerException at
com.myexample.HashMapWrapper$JaxbAccessorM_getMap_setMap_java_util_HashMap.set(MethodAccessor_Ref.java:60)
at
com.sun.xml.bind.v2.runtime.property.SingleMapNodeProperty$1.leaveElement(SingleMapNodeProperty.java:183)
at
com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext.endElement(UnmarshallingContext.java:526)
at
com.sun.xml.bind.v2.runtime.unmarshaller.SAXConnector.endElement(SAXConnector.java:158)
at
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:601)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(XMLDocumentFragmentScannerImpl.java:1782)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2939)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)
at
com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:140)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:511)
at
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:808)
at
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
at
com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:119)
at
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
at
com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
at
com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:218)
at
com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:190)
at
javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerImpl.java:172)
at
javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerImpl.java:219)
at com.myexample.HashMapWrapper.unmarshal(HashMapWrapper.java:89) at
com.myexample.TestBean.testUnmarshal(TestBean.java:29) at
com.myexample.TestBean.init(TestBean.java:18)
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