CXF & JSON Response

[Coder One]

I got my CXF JAX-RS service going but the response is cryptic: No message body 
writer found for response class : AlertMsg. 

Browsing the archive, I found the solution, but it looks "roundabout".  I don't 
like the need to annotate my response bean with JAXB stuff.  An analogy is that 
Web Services (SOAP) do not require annotations/registration of writers of the 
response beans...why CXF/JAX-RS?  Thanks...

    @GET
    @Path("/getAlertMsg/{aId}")
    @ProduceMime("application/json")
    public AlertMsg getAlertMsg(@PathParam("aId") String aId)


public class AlertMsg implements java.io.Serializable
{
   private String a;
   private String[] b;
}