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<ProfileDto> profilesDto = new ArrayList<ProfileDto>();    ...    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() { }     ... } 

Answer 1

Your ProfileDto class is not referenced in SearchResultDto. Try adding @XmlSeeAlso(ProfileDto.class) to SearchResultDto.

Answer 2

I had this error because I registered the wrong class in this line of code:

JAXBContext context = JAXBContext.newInstance(MyRootXmlClass.class);