JAX-WS SOAP客户端Nullpointer异常

Question

我希望你能帮助我。我使用JAX-WS创建了SOAP客户端。我有用于处理从WSDL文件生成的请求的类。在发送给我的客户端的请求中，传输的对象始终为零。我已经实现了SOAP LogicalHandler，可以看到有效负载中有数据。有谁知道这可能是什么原因？

这是我的webService类

    @WebService (targetNamespace = "http://xmldefs.volkswagenag.com/Technical/Security/UserNotificationService/V2")
    @Addressing(enabled=true, required=false)
    public interface GRPSoapService {
    
        @WebMethod
         @Action(
                    input="http://xmldefs.volkswagenag.com/Technical/Security/UserNotificationService/V2/UserNotificationServicePortType/SyncUserMessage",
                    output="http://xmldefs.volkswagenag.com/Technical/Security/UserNotificationService/V2/UserNotificationServicePortType/SyncUserResponse")
    
        public SyncUserResponseType SyncUser(@WebParam(name = "syncUser") SyncUserType syncUser) throws FaultType;
        
    }

@WebService( serviceName = "GRPSoapService",endpointInterface="de.skoda.grp.GRPSoapService")
@Addressing(enabled=true, required=false)
@HandlerChain(file="handlers.xml")
@SchemaValidation
public class GRPSoapServiceImpl implements GRPSoapService {
    static {
        File log4j2File = new File("I:\\GRPSoapService\\log4j2.xml");
        System.setProperty("log4j2.configurationFile", log4j2File.toURI().toString());
        System.setProperty("jaxb.debug", "true");
    }
    public static final Logger ProcessAlivelogger = LogManager.getLogger("de.skoda.grp.ProcessAlive");
    public static final Logger SyncUserlogger =LogManager.getLogger("de.skoda.grp.SyncUSer");
    public static String messageID;
    @Resource
    private WebServiceContext wsContext;
    @Override
    public SyncUserResponseType SyncUser(SyncUserType syncUser) throws FaultType {
        SyncUserlogger.debug(messageID + ": SyncUser started " + syncUser) ; 
        // logging
        String loggingInfo = "";
        
        UserType user = syncUser.getUser();
}

syncUser对象ist始终为空