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https://issues.apache.org/jira/browse/CXF-2234?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12712106#action_12712106
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Tom commented on CXF-2234:
--------------------------
I attached the source, but it's a "what's the most efficient approach" thingy.
My classes are relating to all kind of other things like FEST reflection. I
believe it would be much more efficient to take an existing "list" alike method
using JAXB, and simply move that into a inherited interface. If you then get
the same exception, you won't have to work through my sources, nor do I need to
shop out a working example. If not, then we can see if I should sharpen my axe.
The sniplets wee there to explain the setup, but you should mimick it in an
existing unit test.
> Unmarshalling with JAXB of a method that is defined in an inherited interface
> results in an NPE exception
> ---------------------------------------------------------------------------------------------------------
>
> Key: CXF-2234
> URL: https://issues.apache.org/jira/browse/CXF-2234
> Project: CXF
> Issue Type: Bug
> Components: JAXB Databinding, Soap Binding
> Affects Versions: 2.2.2
> Environment: WindowsXP-SP3, Eclipse 3.4
> Reporter: Tom
> Attachments: services.rar
>
>
> The UserService:
> @javax.jws.WebService
> public interface UserService extends AbstractService<User, Users>
> {
> }
> The AbstractService:
> @javax.jws.WebService
> public interface AbstractService<T, Ts>
> {
> public Ts list();
> }
> The UserServiceImpl:
> @javax.jws.WebService(endpointInterface =
> "nl.knowledgeplaza.profiler.services.UserService", serviceName = "users") //
> the "ws" prefix is handled by the container
> public class UserServiceImpl
> implements UserService
> {
> public Users list()
> {
> try
> {
> if (slf4j.isDebugEnabled()) slf4j.debug("list User");
>
> // find all
> List<User> lList = User.findAll();
> if (slf4j.isDebugEnabled()) slf4j.debug("list User
> size={}", lList.size());
>
> // create a collection so JAXB knows what to do
> Users lUsers= new Users(lList);
>
> // done
> return lUsers;
> }
> catch (RuntimeException e)
> {
> slf4j.error(ExceptionUtil.describe(e), e);
> throw e;
> }
> }
> }
> UnitTests start the SOAP end point as follows:
> javax.xml.ws.Endpoint.publish(cWSUserAddress, new UserServiceImpl());
> The unittest:
> @org.junit.Test
> public void listUsersSOAP()
> {
> // create a proxy to the service
> JaxWsProxyFactoryBean factory = new JaxWsProxyFactoryBean();
> factory.getInInterceptors().add(new LoggingInInterceptor());
> factory.getOutInterceptors().add(new LoggingOutInterceptor());
> factory.setServiceClass(UserService.class);
> factory.setAddress(cWSUserAddress);
> UserService lUserService = (UserService)factory.create();
>
> // make the call
> Users lUsers = lUserService.list();
>
> // check it
> org.fest.assertions.Assertions.assertThat(
> lUsers.getUser().size() ).isGreaterThan(0);
> }
> The call arrives serverside, the code is correctly executed and 4 User
> entities have been fetched from the database. The JAXB marshalling then runs
> into problems, resulting in a value of null being returned on the clients
> side, and failing the unittest on a NPE.
> The trace:
> May 22, 2009 11:29:00 AM
> org.apache.cxf.interceptor.LoggingOutInterceptor$LoggingCallback onClose
> INFO: Outbound Message
> ---------------------------
> ID: 2
> Address: http://localhost:9000/ws/user
> Encoding: UTF-8
> Content-Type: text/xml
> Headers: {SOAPAction=[""], Accept=[*/*]}
> Payload: <soap:Envelope
> xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/";><soap:Body><ns1:list
> xmlns:ns1="http://services.profiler.knowledgeplaza.nl/";
> /></soap:Body></soap:Envelope>
> --------------------------------------
> [33299...@qtp-22864463-1] 2009-05-22 11:29:06,296 DEBUG
> nl.knowledgeplaza.profiler.services.UserServiceImpl.list(UserServiceImpl.java:48)
> list User
> [EL Fine]: 2009-05-22
> 11:29:07.093--ServerSession(15545028)--Connection(13749345)--Thread(thread[33299...@qtp-22864463-1,5,main])--SELECT
> id, username, middlename, email, lastname, callname, firstname, version FROM
> KP_USER
> [33299...@qtp-22864463-1] 2009-05-22 11:29:08,750 DEBUG
> nl.knowledgeplaza.profiler.services.UserServiceImpl.list(UserServiceImpl.java:52)
> list User size=4
> May 22, 2009 11:29:11 AM org.apache.cxf.phase.PhaseInterceptorChain
> doIntercept
> INFO: Interceptor has thrown exception, unwinding now
> org.apache.cxf.interceptor.Fault: Marshalling Error: class
> nl.knowledgeplaza.profiler.services.support.Users nor any of its super class
> is known to this context.
> at
> org.apache.cxf.jaxb.JAXBEncoderDecoder.marshall(JAXBEncoderDecoder.java:159)
> at org.apache.cxf.jaxb.io.DataWriterImpl.write(DataWriterImpl.java:169)
> at
> org.apache.cxf.interceptor.AbstractOutDatabindingInterceptor.writeParts(AbstractOutDatabindingInterceptor.java:105)
> at
> org.apache.cxf.interceptor.BareOutInterceptor.handleMessage(BareOutInterceptor.java:68)
> at
> org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:236)
> at
> org.apache.cxf.interceptor.OutgoingChainInterceptor.handleMessage(OutgoingChainInterceptor.java:74)
> at
> org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:236)
> at
> org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:89)
> at
> org.apache.cxf.transport.http_jetty.JettyHTTPDestination.serviceRequest(JettyHTTPDestination.java:302)
> at
> org.apache.cxf.transport.http_jetty.JettyHTTPDestination.doService(JettyHTTPDestination.java:265)
> at
> org.apache.cxf.transport.http_jetty.JettyHTTPHandler.handle(JettyHTTPHandler.java:70)
> at
> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
> at
> org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
> at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
> at org.mortbay.jetty.Server.handle(Server.java:324)
> at
> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:535)
> at
> org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:880)
> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:747)
> at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
> at
> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
> at
> org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:520)
> Caused by: javax.xml.bind.MarshalException
> - with linked exception:
> [javax.xml.bind.JAXBException: class
> nl.knowledgeplaza.profiler.services.support.Users nor any of its super class
> is known to this context.]
> at
> com.sun.xml.bind.v2.runtime.MarshallerImpl.write(MarshallerImpl.java:328)
> at
> com.sun.xml.bind.v2.runtime.MarshallerImpl.marshal(MarshallerImpl.java:254)
> at
> javax.xml.bind.helpers.AbstractMarshallerImpl.marshal(AbstractMarshallerImpl.java:75)
> at
> org.apache.cxf.jaxb.JAXBEncoderDecoder.writeObject(JAXBEncoderDecoder.java:441)
> at
> org.apache.cxf.jaxb.JAXBEncoderDecoder.marshall(JAXBEncoderDecoder.java:138)
> ... 21 more
> Caused by: javax.xml.bind.JAXBException: class
> nl.knowledgeplaza.profiler.services.support.Users nor any of its super class
> is known to this context.
> at
> com.sun.xml.bind.v2.runtime.XMLSerializer.reportError(XMLSerializer.java:242)
> at
> com.sun.xml.bind.v2.runtime.XMLSerializer.reportError(XMLSerializer.java:257)
> at
> com.sun.xml.bind.v2.runtime.XMLSerializer.childAsXsiType(XMLSerializer.java:649)
> at
> com.sun.xml.bind.v2.runtime.ElementBeanInfoImpl$1.serializeBody(ElementBeanInfoImpl.java:151)
> at
> com.sun.xml.bind.v2.runtime.ElementBeanInfoImpl$1.serializeBody(ElementBeanInfoImpl.java:185)
> at
> com.sun.xml.bind.v2.runtime.ElementBeanInfoImpl.serializeBody(ElementBeanInfoImpl.java:305)
> at
> com.sun.xml.bind.v2.runtime.ElementBeanInfoImpl.serializeRoot(ElementBeanInfoImpl.java:312)
> at
> com.sun.xml.bind.v2.runtime.ElementBeanInfoImpl.serializeRoot(ElementBeanInfoImpl.java:71)
> at
> com.sun.xml.bind.v2.runtime.XMLSerializer.childAsRoot(XMLSerializer.java:490)
> at
> com.sun.xml.bind.v2.runtime.MarshallerImpl.write(MarshallerImpl.java:325)
> ... 25 more
> Caused by: javax.xml.bind.JAXBException: class
> nl.knowledgeplaza.profiler.services.support.Users nor any of its super class
> is known to this context.
> at
> com.sun.xml.bind.v2.runtime.JAXBContextImpl.getBeanInfo(JAXBContextImpl.java:566)
> at
> com.sun.xml.bind.v2.runtime.XMLSerializer.childAsXsiType(XMLSerializer.java:644)
> ... 32 more
> May 22, 2009 11:29:12 AM org.apache.cxf.interceptor.LoggingInInterceptor
> logging
> INFO: Inbound Message
> ----------------------------
> ID: 2
> Encoding: UTF-8
> Content-Type: text/xml; charset=utf-8
> Headers: {content-type=[text/xml; charset=utf-8], Content-Length=[415],
> Server=[Jetty(6.1.15)]}
> Payload: <soap:Envelope
> xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/";><soap:Body><ns1:listResponse
>
> xmlns:ns1="http://services.profiler.knowledgeplaza.nl/";><soap:Fault><faultcode>soap:Server</faultcode><faultstring>Marshalling
> Error: class nl.knowledgeplaza.profiler.services.support.Users nor any of
> its super class is known to this
> context.</faultstring></soap:Fault></ns1:listResponse></soap:Body></soap:Envelope>
> --------------------------------------
> The Users class is just a collection workaround as suggested in CXF's
> documentation:
> @XmlRootElement(name = "users")
> public class Users
> implements Serializable
> {
> public Users() { setUser(new ArrayList<User>()); } // upon JAXB
> unmarshalling of an empty collection, the setUser is NOT called and the
> collection would be null instead of empty
> public Users(Collection<User> c) { setUser(c); }
>
> private Collection<User> iCollection;
> public Collection<User> getUser() { return iCollection; }
> public void setUser(Collection<User> c) { iCollection = c; }
>
> public List<User> asList() { return new ArrayList<User>(iCollection); }
> }
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