Hi, I am developing an application which I want to be "100% fully compliant" across different Java EE vendors. Now it is a simple RESTful web application. The application works perfectly in Apache TomEE and Glassfish but not in Wildfly 8.1.0. Concretely it fails when try to unmarshal a rest call. Let me show an example (I have created one to make easy to follow).

I have next POJO:

@XmlRootElement
public class BookInfo {
    private String title;
    private String author;

    public void setAuthor(String author) {
        this.author = author;
    }

    public String getAuthor() {
        return author;
    }
    public void setTitle(String title) {
        this.title = title;
    }

    public String getTitle() {
        return title;
    }
}

And the service looks like:

@Singleton
@Path("bookinfo")
public class BookInfoService {
    @GET
    @Path("{isbn}")
    @Produces(MediaType.APPLICATION_JSON)
    @Consumes(MediaType.APPLICATION_JSON)
    public BookInfo findBookByISBN(@PathParam("isbn") String isbn) {

        BookInfo bookInfo = new BookInfo();
        bookInfo.setAuthor("XX");
        bookInfo.setTitle("YY");
       
        return bookInfo;
    }
}

And I am using Arquillian and the test method is:

 Client client = ClientBuilder.newClient();
 BookInfo bookInfo = client.target(URI.create(new URL(base, "rest/").toExternalForm())).path("bookinfo/1111").request().get(BookInfo.class);

I am using Arquillian 1.1.5, Wildfly 8.1.0 and Jettison 3.0.8.

And the exception that is thrown in line 2 of test is:

javax.ws.rs.client.ResponseProcessingException: javax.ws.rs.ProcessingException: org.jboss.resteasy.plugins.providers.jaxb.JAXBUnmarshalException: javax.xml.bind.UnmarshalException
 - with linked exception:
[com.sun.istack.SAXParseException2; columnNumber: 0; unexpected element (uri:"", local:"title"). Expected elements are <{}bookInfo>]
  at org.jboss.resteasy.client.jaxrs.internal.ClientInvocation.extractResult(ClientInvocation.java:140)
  at org.jboss.resteasy.client.jaxrs.internal.ClientInvocation.invoke(ClientInvocation.java:444)
  at org.jboss.resteasy.client.jaxrs.internal.ClientInvocationBuilder.get(ClientInvocationBuilder.java:165)

I am not pretty sure why it works in all servers but not in Wildfly. I have googled a bit but I have not found any solution to this problem

If in test I do a get(String.class) I receive a correct json document so it seems that server side works perfectly.

Thank you so much for your time,

Alex.