我有与SAOP通信的Java客户端和Java服务器。两者都使用CXF进行通信。 在服务器端，我有方法：
@Transactional
public UserDto getByPrincipalId(String principalId) throws UserBusinessException {
在客户端，我这样拨打服务电话：
UserDto user = userService.getByPrincipalId(login);
呼叫结束并出现错误：
2018-07-06 13:11:38,551 WARN [http-nio-8080-exec-123] [ab00009138] o.a.c.p.PhaseInterceptorChain [LogUtils.java:449] Interceptor for {http://impl.service.users.module.server.yyyy.xxxxx.sk/}UserServiceImplService#{http://xxxxx.sk/user}getByPrincipalId has thrown exception, unwinding now
org.apache.cxf.interceptor.Fault: null
at org.apache.cxf.jaxws.interceptors.WrapperClassInInterceptor.handleMessage(WrapperClassInInterceptor.java:163) ~[cxf-rt-frontend-jaxws-3.1.10.jar:3.1.10]
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:308) ~[cxf-core-3.1.10.jar:3.1.10]
at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121) [cxf-core-3.1.10.jar:3.1.10]
at org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:262) [cxf-rt-transports-http-3.1.10.jar:3.1.10]
at org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:234) [cxf-rt-transports-http-3.1.10.jar:3.1.10]
at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:208) [cxf-rt-transports-http-3.1.10.jar:3.1.10]
at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:160) [cxf-rt-transports-http-3.1.10.jar:3.1.10]
at org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:180) [cxf-rt-transports-http-3.1.10.jar:3.1.10]
at org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:299) [cxf-rt-transports-http-3.1.10.jar:3.1.10]
at org.apache.cxf.transport.servlet.AbstractHTTPServlet.doPost(AbstractHTTPServlet.java:218) [cxf-rt-transports-http-3.1.10.jar:3.1.10]
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-3.1.10.jar:3.1.10]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) [catalina.jar:8.5.29]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:8.5.29]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) [tomcat-websocket.jar:8.5.29]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [catalina.jar:8.5.29]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:8.5.29]
at sk.xxxxx.yyyy.server.filter.AuthenticateFilter.doFilter(AuthenticateFilter.java:32) [filter-0.0.1-SNAPSHOT.jar:na]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [catalina.jar:8.5.29]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:8.5.29]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198) [catalina.jar:8.5.29]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [catalina.jar:8.5.29]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:496) [catalina.jar:8.5.29]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) [catalina.jar:8.5.29]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81) [catalina.jar:8.5.29]
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650) [catalina.jar:8.5.29]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) [catalina.jar:8.5.29]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) [catalina.jar:8.5.29]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803) [tomcat-coyote.jar:8.5.29]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-coyote.jar:8.5.29]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790) [tomcat-coyote.jar:8.5.29]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459) [tomcat-coyote.jar:8.5.29]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-coyote.jar:8.5.29]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_172]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_172]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-util.jar:8.5.29]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_172]
Caused by: org.apache.cxf.interceptor.Fault: null
at org.apache.cxf.databinding.AbstractWrapperHelper.getWrapperParts(AbstractWrapperHelper.java:146) ~[cxf-core-3.1.10.jar:3.1.10]
at org.apache.cxf.jaxws.interceptors.WrapperClassInInterceptor.handleMessage(WrapperClassInInterceptor.java:130) ~[cxf-rt-frontend-jaxws-3.1.10.jar:3.1.10]
... 36 common frames omitted
Caused by: java.lang.NullPointerException: null
at sk.xxxxx.yyyy.server.module.users.jaxws_asm.GetByPrincipalId.getArg0(Unknown Source) ~[na:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_172]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_172]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_172]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_172]
at org.apache.cxf.jaxb.JAXBWrapperHelper.getValue(JAXBWrapperHelper.java:61) ~[cxf-rt-databinding-jaxb-3.1.10.jar:3.1.10]
at org.apache.cxf.databinding.AbstractWrapperHelper.getWrapperParts(AbstractWrapperHelper.java:132) ~[cxf-core-3.1.10.jar:3.1.10]
... 37 common frames omitted
SOAP消息如下：
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Header>
<wsse:Security xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" soap:mustUnderstand="1">
<wsse:UsernameToken wsu:Id="UsernameToken-bc724cd6-b4ea-497c-a722-455c338f04b1">
<wsse:Username>peter</wsse:Username>
<wsse:Password Type="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username-token-profile-1.0#PasswordText">ddddd</wsse:Password>
</wsse:UsernameToken>
</wsse:Security>
</soap:Header>
<soap:Body>
<ns2:getByPrincipalId xmlns:ns2="http://yyyy.sk/user">
<arg0>peter</arg0>
</ns2:getByPrincipalId>
</soap:Body>
SOAP消息与客户端发送的消息相同地到达服务器。看起来，反序列化存在问题。
在服务器Tomcat 8上。其他信息：Java 8，CXF 3.1.10