@GET @Path("/{civica_id}") @Produces(MediaType.APPLICATION_JSON) @Transactional public Response getUser(@PathParam("civica_id") String civica_id) throws MyException { Civica civica = new Civica(); civica = civicaDAO.leer(civica_id); return Response.ok() // 200 .entity(civica) .header("Access-Control-Allow-Origin", "*") .header("Access-Control-Allow-Methods", "GET, POST, DELETE, PUT") .build(); }