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Major Description
I hope that this description is complete enough. I think creating a test case for this ticket will be more trouble than it's worth, but please let me know if you need me to.
I have added BeanValidationInInterceptor to my JAX-RS service which uses JAXB-annotated entities.
I have created an ExceptionMapper to capture and write out the validation errors into my JAXB-annotated object's 'description' field.
In my exception mapper, I populate MyObject (which is JAXB-annotated), and then set it as the entity:
responseBuilder.entity(myObject);
it results in an NPE as the JAXBElementProvider attempts to get any attachments from the MessageContext, which dereferences a null OutboundMessage from its Exchange.
Line 83 in MessageContextImpl contains:
return m.getExchange().getOutMessage().get(Message.ATTACHMENTS);
The javadoc for Exchange.getOutMessage states that "During the inbound message processing, the outbound message is null".
2014-08-20 23:50:53,919|ERROR|http-0.0.0.0-8443-2:|STDERR| java.lang.NullPointerException 2014-08-20 23:50:53,919|ERROR|http-0.0.0.0-8443-2:|STDERR| at org.apache.cxf.jaxrs.ext.MessageContextImpl.get(MessageContextImpl.java:83) 2014-08-20 23:50:53,919|ERROR|http-0.0.0.0-8443-2:|STDERR| at org.apache.cxf.jaxrs.impl.tl.ThreadLocalMessageContext.get(ThreadLocalMessageContext.java:38) 2014-08-20 23:50:53,927|ERROR|http-0.0.0.0-8443-2:|STDERR| at org.apache.cxf.jaxrs.provider.JAXBElementProvider.getAttachments(JAXBElementProvider.java:542) 2014-08-20 23:50:53,927|ERROR|http-0.0.0.0-8443-2:|STDERR| at org.apache.cxf.jaxrs.provider.JAXBElementProvider.addAttachmentMarshaller(JAXBElementProvider.java:520) 2014-08-20 23:50:53,928|ERROR|http-0.0.0.0-8443-2:|STDERR| at org.apache.cxf.jaxrs.provider.JAXBElementProvider.marshal(JAXBElementProvider.java:444) 2014-08-20 23:50:53,928|ERROR|http-0.0.0.0-8443-2:|STDERR| at org.apache.cxf.jaxrs.provider.JAXBElementProvider.writeTo(JAXBElementProvider.java:318) 2014-08-20 23:50:53,928|ERROR|http-0.0.0.0-8443-2:|STDERR| at org.apache.cxf.jaxrs.utils.JAXRSUtils.writeMessageBody(JAXRSUtils.java:1363) 2014-08-20 23:50:53,928|ERROR|http-0.0.0.0-8443-2:|STDERR| at org.apache.cxf.jaxrs.interceptor.JAXRSOutInterceptor.serializeMessage(JAXRSOutInterceptor.java:244) 2014-08-20 23:50:53,928|ERROR|http-0.0.0.0-8443-2:|STDERR| at org.apache.cxf.jaxrs.interceptor.JAXRSOutInterceptor.processResponse(JAXRSOutInterceptor.java:117) 2014-08-20 23:50:53,928|ERROR|http-0.0.0.0-8443-2:|STDERR| at org.apache.cxf.jaxrs.interceptor.JAXRSOutInterceptor.handleMessage(JAXRSOutInterceptor.java:80) 2014-08-20 23:50:53,928|ERROR|http-0.0.0.0-8443-2:|STDERR| at org.apache.cxf.jaxrs.interceptor.JAXRSDefaultFaultOutInterceptor.handleMessage(JAXRSDefaultFaultOutInterceptor.java:61) 2014-08-20 23:50:53,928|ERROR|http-0.0.0.0-8443-2:|STDERR| at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:307) 2014-08-20 23:50:53,928|ERROR|http-0.0.0.0-8443-2:|STDERR| at org.apache.cxf.interceptor.AbstractFaultChainInitiatorObserver.onMessage(AbstractFaultChainInitiatorObserver.java:113) 2014-08-20 23:50:53,928|ERROR|http-0.0.0.0-8443-2:|STDERR| at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:371) 2014-08-20 23:50:53,928|ERROR|http-0.0.0.0-8443-2:|STDERR| at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121) 2014-08-20 23:50:53,928|ERROR|http-0.0.0.0-8443-2:|STDERR| at org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:243) 2014-08-20 23:50:53,928|ERROR|http-0.0.0.0-8443-2:|STDERR| at org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:223) 2014-08-20 23:50:53,928|ERROR|http-0.0.0.0-8443-2:|STDERR| at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:197) 2014-08-20 23:50:53,928|ERROR|http-0.0.0.0-8443-2:|STDERR| at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:149) 2014-08-20 23:50:53,928|ERROR|http-0.0.0.0-8443-2:|STDERR| at org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:171)