调用 CXF 服务端报org.apache.cxf.interceptor.Fault: Unmarshalling Error: 错误的解决方法
最近在和 SAP 对接接口时，SAP 一直调用报错，服务端报错的信息如下：
org.apache.cxf.interceptor.Fault: Unmarshalling Error:
at org.apache.cxf.jaxb.JAXBEncoderDecoder.unmarshall(JAXBEncoderDecoder.java:906) ~[cxf-rt-databinding-jaxb-3.1.9.jar:3.1.9]at org.apache.cxf.jaxb.JAXBEncoderDecoder.unmarshall(JAXBEncoderDecoder.java:712) ~[cxf-rt-databinding-jaxb-3.1.9.jar:3.1.9]
at org.apache.cxf.jaxb.io.DataReaderImpl.read(DataReaderImpl.java:179) ~[cxf-rt-databinding-jaxb-3.1.9.jar:3.1.9]
at org.apache.cxf.wsdl.interceptors.DocLiteralInInterceptor.handleMessage(DocLiteralInInterceptor.java:194) ~[cxf-rt-wsdl-3.1.9.jar:3.1.9]
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:308) ~[cxf-core-3.1.9.jar:3.1.9]
at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121) [cxf-core-3.1.9.jar:3.1.9]
at org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:252) [cxf-rt-transports-http-3.1.9.jar:3.1.9]
at org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:234) [cxf-rt-transports-http-3.1.9.jar:3.1.9]
at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:208) [cxf-rt-transports-http-3.1.9.jar:3.1.9]
at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:160) [cxf-rt-transports-http-3.1.9.jar:3.1.9]
at org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:180) [cxf-rt-transports-http-3.1.9.jar:3.1.9]
at org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:299) [cxf-rt-transports-http-3.1.9.jar:3.1.9]
at org.apache.cxf.transport.servlet.AbstractHTTPServlet.doPost(AbstractHTTPServlet.java:218) [cxf-rt-transports-http-3.1.9.jar:3.1.9]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:661) [servlet-api.jar:na]
at org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:274) [cxf-rt-transports-http-3.1.9.jar:3.1.9]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) [catalina.jar:8.5.14]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:8.5.14]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) [tomcat-websocket.jar:8.5.14]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [catalina.jar:8.5.14]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:8.5.14]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:121) [spring-web-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [catalina.jar:8.5.14]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:8.5.14]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198) [catalina.jar:8.5.14]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [catalina.jar:8.5.14]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478) [catalina.jar:8.5.14]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) [catalina.jar:8.5.14]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80) [catalina.jar:8.5.14]
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624) [catalina.jar:8.5.14]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) [catalina.jar:8.5.14]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) [catalina.jar:8.5.14]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:799) [tomcat-coyote.jar:8.5.14]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-coyote.jar:8.5.14]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861) [tomcat-coyote.jar:8.5.14]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1455) [tomcat-coyote.jar:8.5.14]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-coyote.jar:8.5.14]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_99]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_99]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-util.jar:8.5.14]
at java.lang.Thread.run(Thread.java:745) [na:1.7.0_99]
Caused by: javax.xml.bind.UnmarshalException: null
at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.handleStreamException(UnmarshallerImpl.java:483) ~[jaxb-impl-2.2.11.jar:2.2.11]
at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:417) ~[jaxb-impl-2.2.11.jar:2.2.11]
at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:394) ~[jaxb-impl-2.2.11.jar:2.2.11]
at org.apache.cxf.jaxb.JAXBEncoderDecoder.doUnmarshal(JAXBEncoderDecoder.java:855) ~[cxf-rt-databinding-jaxb-3.1.9.jar:3.1.9]
at org.apache.cxf.jaxb.JAXBEncoderDecoder.access$100(JAXBEncoderDecoder.java:102) ~[cxf-rt-databinding-jaxb-3.1.9.jar:3.1.9]
at org.apache.cxf.jaxb.JAXBEncoderDecoder$2.run(JAXBEncoderDecoder.java:894) ~[cxf-rt-databinding-jaxb-3.1.9.jar:3.1.9]
at java.security.AccessController.doPrivileged(Native Method) ~[na:1.7.0_99]
at org.apache.cxf.jaxb.JAXBEncoderDecoder.unmarshall(JAXBEncoderDecoder.java:892) ~[cxf-rt-databinding-jaxb-3.1.9.jar:3.1.9]
... 40 common frames omitted
Caused by: com.sun.istack.SAXParseException2:
at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext.handleEvent(UnmarshallingContext.java:740) ~[jaxb-impl-2.2.11.jar:2.2.11]
at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext.handleError(UnmarshallingContext.java:770) ~[jaxb-impl-2.2.11.jar:2.2.11]
at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext.handleError(UnmarshallingContext.java:766) ~[jaxb-impl-2.2.11.jar:2.2.11]
at com.sun.xml.bind.v2.model.impl.RuntimeBuiltinLeafInfoImpl$12.parse(RuntimeBuiltinLeafInfoImpl.java:595) ~[jaxb-impl-2.2.11.jar:2.2.11]
at com.sun.xml.bind.v2.model.impl.RuntimeBuiltinLeafInfoImpl$12.parse(RuntimeBuiltinLeafInfoImpl.java:568) ~[jaxb-impl-2.2.11.jar:2.2.11]
at com.sun.xml.bind.v2.runtime.FilterTransducer.parse(FilterTransducer.java:84) ~[jaxb-impl-2.2.11.jar:2.2.11]
at com.sun.xml.bind.v2.runtime.reflect.TransducedAccessor$CompositeTransducedAccessorImpl.parse(TransducedAccessor.java:245) ~[jaxb-impl-2.2.11.jar:2.2.11]
at com.sun.xml.bind.v2.runtime.unmarshaller.LeafPropertyLoader.text(LeafPropertyLoader.java:65) ~[jaxb-impl-2.2.11.jar:2.2.11]
at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext.text(UnmarshallingContext.java:589) ~[jaxb-impl-2.2.11.jar:2.2.11]
at com.sun.xml.bind.v2.runtime.unmarshaller.StAXStreamConnector.processText(StAXStreamConnector.java:338) ~[jaxb-impl-2.2.11.jar:2.2.11]
at com.sun.xml.bind.v2.runtime.unmarshaller.StAXStreamConnector.handleEndElement(StAXStreamConnector.java:216) ~[jaxb-impl-2.2.11.jar:2.2.11]
at com.sun.xml.bind.v2.runtime.unmarshaller.StAXStreamConnector.bridge(StAXStreamConnector.java:185) ~[jaxb-impl-2.2.11.jar:2.2.11]
at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:415) ~[jaxb-impl-2.2.11.jar:2.2.11]
... 46 common frames omitted
Caused by: javax.xml.bind.UnmarshalException:
... 59 common frames omitted
Caused by: java.lang.IllegalArgumentException:
at com.sun.org.apache.xerces.internal.jaxp.datatype.XMLGregorianCalendarImpl$Parser.parseAndSetYear(XMLGregorianCalendarImpl.java:2887) ~[na:1.7.0_99]
at com.sun.org.apache.xerces.internal.jaxp.datatype.XMLGregorianCalendarImpl$Parser.parse(XMLGregorianCalendarImpl.java:2773) ~[na:1.7.0_99]
at com.sun.org.apache.xerces.internal.jaxp.datatype.XMLGregorianCalendarImpl.
at com.sun.org.apache.xerces.internal.jaxp.datatype.DatatypeFactoryImpl.newXMLGregorianCalendar(DatatypeFactoryImpl.java:536) ~[na:1.7.0_99]
at com.sun.xml.bind.v2.model.impl.RuntimeBuiltinLeafInfoImpl$12.parse(RuntimeBuiltinLeafInfoImpl.java:592) ~[jaxb-impl-2.2.11.jar:2.2.11]
... 55 common frames omitted
解决方案：服务端的接口方法上 @WebMethod 注解后面什么参数都不要去加即可。