javax xml bind JAXBException Class nor any of its super class is known to this context

Question

I m trying to pass a object via REST web service  Following are my classes explains the functionality that I need using some example codes    Rest Web Service Class method   POST  Path   find    Consumes MediaType APPLICATION FORM URLENCODED   Produces  MediaType APPLICATION JSON   public Response getDepartments        Response response   new Response         try            response setCode MessageCode SUCCESS           response setMessage  Department Names            Department dept   new Department  12    Financial            response setPayload dept          catch  Exception e            response setCode MessageCode ERROR           response setMessage e getMessage             e printStackTrace                     return response      Response Class  import java io Serializable  import javax xml bind annotation XmlRootElement    XmlRootElement  public class Response implements Serializable       private static final long serialVersionUID   1L       public enum MessageCode           SUCCESS  ERROR  UNKNOWN            private MessageCode code      private String message      private Object payload       public MessageCode getCode             return code             public void setCode MessageCode code            this code   code             public String getMessage             return message             public void setMessage String message            this message   message             public Object getPayload             return payload             public void setPayload Object payload            this payload   payload            Department Class   XmlRootElement public class Department implements java io Serializable         private String deptNo      private String deptName        public Department                public Department String deptNo  String deptName            this deptNo   deptNo          this deptName   deptName             public String getDeptNo             return this deptNo             public void setDeptNo String deptNo            this deptNo   deptNo             public String getDeptName             return this deptName             public void setDeptName String deptName            this deptName   deptName             When I make a call to getDepartments method in the rest web service class it returns following exceptions  But If I change the type Object of the payload to Department in the Response class it returns the json response correctly  But since I need to use this Response class for different types of Classes I can t restring the payload to one class type  Can anyone please help me in this matter   Stack Trace   Dec 27  2012 9 34 18 PM com sun jersey spi container ContainerResponse logException SEVERE  Mapped exception to response  500  Internal Server Error  javax ws rs WebApplicationException  javax xml bind MarshalException  - with linked exception   javax xml bind JAXBException  class Department nor any of its super class is known to this context       at com sun jersey core provider jaxb AbstractRootElementProvider writeTo AbstractRootElementProvider java 159      at com sun jersey spi container ContainerResponse write ContainerResponse java 306      at com sun jersey server impl application WebApplicationImpl  handleRequest WebApplicationImpl java 1437      at com sun jersey server impl application WebApplicationImpl handleRequest WebApplicationImpl java 1349      at com sun jersey server impl application WebApplicationImpl handleRequest WebApplicationImpl java 1339      at com sun jersey spi container servlet WebComponent service WebComponent java 416      at com sun jersey spi container servlet ServletContainer service ServletContainer java 537      at com sun jersey spi container servlet ServletContainer service ServletContainer java 699      at javax servlet http HttpServlet service HttpServlet java 820      at org mortbay jetty servlet ServletHolder handle ServletHolder java 511      at org mortbay jetty servlet ServletHandler handle ServletHandler java 401      at org mortbay jetty security SecurityHandler handle SecurityHandler java 216      at org mortbay jetty servlet SessionHandler handle SessionHandler java 182      at org mortbay jetty handler ContextHandler handle ContextHandler java 766      at org mortbay jetty webapp WebAppContext handle WebAppContext java 450      at org mortbay jetty handler HandlerWrapper handle HandlerWrapper java 152      at org mortbay jetty Server handle Server java 326      at org mortbay jetty HttpConnection handleRequest HttpConnection java 542      at org mortbay jetty HttpConnection RequestHandler content HttpConnection java 945      at org mortbay jetty HttpParser parseNext HttpParser java 756      at org mortbay jetty HttpParser parseAvailable HttpParser java 218      at org mortbay jetty HttpConnection handle HttpConnection java 404      at org mortbay io nio SelectChannelEndPoint run SelectChannelEndPoint java 410      at org mortbay thread QueuedThreadPool PoolThread run QueuedThreadPool java 582  Caused by  javax xml bind MarshalException  - with linked exception   javax xml bind JAXBException  class Department nor any of its super class is known to this context       at com sun xml bind v2 runtime MarshallerImpl write MarshallerImpl java 323      at com sun xml bind v2 runtime MarshallerImpl marshal MarshallerImpl java 177      at com sun jersey json impl BaseJSONMarshaller marshallToJSON BaseJSONMarshaller java 103      at com sun jersey json impl provider entity JSONRootElementProvider writeTo JSONRootElementProvider java 136      at com sun jersey core provider jaxb AbstractRootElementProvider writeTo AbstractRootElementProvider java 157          23 more Caused by  javax xml bind JAXBException  class Department nor any of its super class is known to this context      at com sun xml bind v2 runtime XMLSerializer reportError XMLSerializer java 250      at com sun xml bind v2 runtime XMLSerializer reportError XMLSerializer java 265      at com sun xml bind v2 runtime XMLSerializer childAsXsiType XMLSerializer java 657      at com sun xml bind v2 runtime property SingleElementNodeProperty serializeBody SingleElementNodeProperty java 156      at com sun xml bind v2 runtime ClassBeanInfoImpl serializeBody ClassBeanInfoImpl java 344      at com sun xml bind v2 runtime XMLSerializer childAsSoleContent XMLSerializer java 597      at com sun xml bind v2 runtime ClassBeanInfoImpl serializeRoot ClassBeanInfoImpl java 328      at com sun xml bind v2 runtime XMLSerializer childAsRoot XMLSerializer java 498      at com sun xml bind v2 runtime MarshallerImpl write MarshallerImpl java 320          27 more Caused by  javax xml bind JAXBException  class Department nor any of its super class is known to this context      at com sun xml bind v2 runtime JAXBContextImpl getBeanInfo JAXBContextImpl java 611      at com sun xml bind v2 runtime XMLSerializer childAsXsiType XMLSerializer java 652          33 more

User · Answer

I had a similar issue using the JAXB reference implementation and JBoss AS 7.1. I was able to write an integration test that confirmed JAXB worked outside of the JBoss environment (suggesting the problem might be the class loader in JBoss).

This is the code that was giving the error (i.e. not working):

private static final JAXBContext JC;

static {
    try {
        JC = JAXBContext.newInstance("org.foo.bar");
    } catch (Exception exp) {
        throw new RuntimeException(exp);
    }
}

and this is the code that worked (ValueSet is one of the classes marshaled from my XML).

private static final JAXBContext JC;

static {
    try {
        ClassLoader classLoader = ValueSet.class.getClassLoader();
        JC = JAXBContext.newInstance("org.foo.bar", classLoader);
    } catch (Exception exp) {
        throw new RuntimeException(exp);
    }
}

In some cases I got the Class nor any of its super class is known to this context. In other cases I also got an exception of org.foo.bar.ValueSet cannot be cast to org.foo.bar.ValueSet (similar to the issue described here: ClassCastException when casting to the same class).

User · Answer

I had faced the similar error when supporting one application  It was about the generated classes for a SOAP Webservice   The issue was caused due to the missing classes  When javax xml bind Marshaller was trying to marshal the jaxb object it was not finding all dependent classes which were generated by using wsdl and xsd  after adding the jar with all the classes at the class path the issue was resolved

User · Answer

I know that it s an old question  but you can change the Response using a parameter  P    public class Response lt P gt  implements Serializable   private static final long serialVersionUID   1L   public enum MessageCode       SUCCESS  ERROR  UNKNOWN    private MessageCode code  private String message  private P payload       public P getPayload         return payload     public void setPayload P payload        this payload   payload         The method would be  public Response lt Departments gt  getDepartments          I can t try it now but it should works   Otherwise it s possible to extends Response   XmlRootElement     public class DepResponse extends Response lt Department gt    lt no content gt

User · Answer

I have the same problem and I solved it by adding package to explore to the Jaxb2marshaller  For spring will be define a bean like this    Bean     public Jaxb2Marshaller marshaller             Jaxb2Marshaller marshaller   new Jaxb2Marshaller            String   packagesToScan     lt packcge which contain the department class gt             marshaller setPackagesToScan packagesToScan           return marshaller          By this way if all your request and response classes are in the same package you do not need to specifically indicate the classes on the JAXBcontext

User · Answer

This errors occurs when we use same method name for Jaxb2Marshaller for exemple        Bean     public Jaxb2Marshaller marshallerClient             Jaxb2Marshaller marshaller   new Jaxb2Marshaller               this package must match the package in the  lt generatePackage gt  specified in            pom xml         marshaller setContextPath  library io github walterwhites loans             return marshaller          And on other file       Bean     public Jaxb2Marshaller marshallerClient             Jaxb2Marshaller marshaller   new Jaxb2Marshaller               this package must match the package in the  lt generatePackage gt  specified in            pom xml         marshaller setContextPath  library io github walterwhites client             return marshaller          Even It s different class  you should named them differently

User · Answer

This exception can be solved by specifying a full class path   Example   If you are using a class named ExceptionDetails    Wrong Way of passing arguments   JAXBContext jaxbContext   JAXBContext newInstance ExceptionDetails class       Right Way of passing arguments  JAXBContext jaxbContext   JAXBContext newInstance com tibco schemas exception ExceptionDetails class

User · Answer

Ftrujillo s answer works well but if you only have one package to scan this is the shortest form         Bean     public Jaxb2Marshaller marshaller             Jaxb2Marshaller marshaller   new Jaxb2Marshaller            marshaller setContextPath  your package to scan            return marshaller

User · Answer

JAX-RS implementations automatically support marshalling unmarshalling of classes based on discoverable JAXB annotations  but because your payload is declared as Object  I think the created JAXBContext misses the Department class and when it s time to marshall it it doesn t know how   A quick and dirty fix would be to add a XmlSeeAlso annotation to your response class    XmlRootElement  XmlSeeAlso  Department class   public class Response implements Serializable            or something a little more complicated would be  to enrich  the JAXB context for the Response class by using a ContextResolver   import javax ws rs Produces  import javax ws rs core MediaType  import javax ws rs ext ContextResolver  import javax ws rs ext Provider  import javax xml bind JAXBContext  import javax xml bind JAXBException    Provider  Produces   MediaType APPLICATION JSON  MediaType APPLICATION XML    public class ResponseResolver implements ContextResolver lt JAXBContext gt        private JAXBContext ctx       public ResponseResolver             try               this ctx   JAXBContext newInstance                           Response class                           Department class                                   catch  JAXBException ex                throw new RuntimeException ex                        public JAXBContext getContext Class lt   gt  type            return  type equals Response class    ctx   null

[java] javax.xml.bind.JAXBException: Class *** nor any of its super class is known to this context

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