JAXB Exception Class not known to this context

Question

When I call a particular restful service method  which is built using CXF  I get the following error  anyone know why and how to resolve it      JAXBException occurred   class   com octory ws dto ProfileDto nor any   of its super class is known to this   context      Following are the service method and relevant DTOs   public class Service      public Response results        Collection lt ProfileDto gt  profilesDto   new ArrayList lt ProfileDto gt               SearchResultDto srd   new SearchResultDto       srd setResultEntities profilesDto      Setting profilesDto collection as resultEntities    srd setResultSize resultSize      return Response ok srd  build             SearchResultDto    XmlRootElement name  searchResult   public class SearchResultDto       private Collection resultEntities      private int resultSize       public SearchResultDto             XmlElementWrapper name  resultEntities       public Collection getResultEntities             return resultEntities             public void setResultEntities Collection resultEntities            this resultEntities   resultEntities             public int getResultSize             return resultSize             public void setResultSize int resultSize            this resultSize   resultSize            ProfileDto    XmlRootElement name  profile   public class ProfileDto                       public ProfileDto

User · Answer

This error message happens either because your ProfileDto class is not registered in the JAXB Content, or the class using it does not use @XmlSeeAlso(ProfileDto.class) to make processable by JAXB.

About your comment:

I was under the impression the annotations was only needed when the referenced class was a sub-class.

No, they are also needed when not declared in the JAXB context or, for example, when the only class having a static reference to it has this reference annotated with @XmlTransient. I maintain a tutorial here.

User · Answer

Fixed it by setting the class name to the property  classesToBeBound  of the JAXB marshaller    lt bean id  jaxbMarshaller  class  org springframework oxm jaxb Jaxb2Marshaller  gt           lt property name  classesToBeBound  gt             lt list gt                   lt value gt myclass lt  value gt             lt  list gt           lt  property gt   lt  bean gt

User · Answer

I had the same problem with spring boot  It resolved when i set package to marshaller    Bean public Jaxb2Marshaller marshaller   throws Exception       Jaxb2Marshaller marshaller   new Jaxb2Marshaller        marshaller setPackagesToScan  com octory ws dto        return marshaller      Bean public WebServiceTemplate webServiceTemplate final Jaxb2Marshaller marshaller           WebServiceTemplate webServiceTemplate   new WebServiceTemplate        webServiceTemplate setMarshaller marshaller       webServiceTemplate setUnmarshaller marshaller       return webServiceTemplate

User · Answer

I had this error because I registered the wrong class in this line of code   JAXBContext context   JAXBContext newInstance MyRootXmlClass class

User · Answer

Your ProfileDto class is not referenced in SearchResultDto  Try adding  XmlSeeAlso ProfileDto class  to SearchResultDto

User · Answer

I had the same exception on Tomcat    I found another problem - when i use wsimport over maven plugin to generate stubs for more then 1 WSDLs  -  class ObjectFactory  stubs references to this class  contains methods ONLY for one wsdl  So you should merge all methods in one ObjectFactory class  for each WSDL  or generate each wsdl stubs in different directories  there will be separates ObjectFactory classes   It solves problem for me with this exception  J

[java] JAXB Exception: Class not known to this context

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