No message body writer has been found for response class

[José Luis Cetina]

Hi, im doing my first restful, im using tomee 1.6.0 jax-rs.

I get this message when in my webpage:  No message body writer has been
found for response class User.

@GET
    @Path("/user")
    @Produces({"application/xml", "application/json"})
    public User getUser(){
        User usr = new User();
        usr.setName("xx");
        return usr;
    }



I never code any restful before.


What im missing?