spring_post_04c.java

@RequestMapping(path = "/names", method = RequestMethod.GET)
public Collection<String> getReservationNames() {

    ParameterizedTypeReference<Resources<Reservation>> ptr =
            new ParameterizedTypeReference<Resources<Reservation>>() {};

    return this.restTemplate.exchange("http://reservation-service/reservations", GET, null, ptr)
            .getBody()
            .getContent()
            .stream()
            .map(Reservation::getReservationName)
            .collect(toList());
}