Question

想象一下我有

    // execute requests to sub modules in parallel
    final CountDownLatch cdl = new CountDownLatch(2);
    final List<Throwable> failures = new ArrayList<>();

    // load customer information
    final Observable<CustomerDTO> customerObservable = customerRxClient.loadCustomer(customerId);

    customerObservable
            .doOnError(throwable -> {
                log.error("Failed to retrieve customer {} information for the reservation {}", customerId, reservationId, throwable);

                cdl.countDown();

                failures.add(throwable);
            })
            .doOnCompleted(cdl::countDown)
            .subscribe(customer -> {
                dto.getReservationOwner().setBirthday(customer.getBirthday());
                dto.getReservationOwner().setCustomerId(customer.getCustomerId());
                dto.getReservationOwner().setCitizenship(customer.getCitizenship());
                dto.getReservationOwner().setEmail(customer.getEmail());
                dto.getReservationOwner().setFirstName(customer.getFirstName());
                dto.getReservationOwner().setGender(customer.getGender());
                dto.getReservationOwner().setLastName(customer.getLastName());
                dto.getReservationOwner().setPhone(ofNullable(customer.getPhone()).map(v -> mappingService.map(v, PhoneDTO.class)).orElse(null));
            });

    // load tickets
    final Observable<List<TicketDTO>> ticketsObservable = ticketsClient.getTickets(reservationId);

    ticketsObservable
            .doOnError(throwable -> {
                log.error("Failed to retrieve tickets for the reservation {}", reservationId, throwable);

                cdl.countDown();

                failures.add(throwable);
            })
            .doOnCompleted(cdl::countDown)
            .subscribe(tickets -> dto.setTickets(tickets.stream()
                    .map(ticket -> ReservationDTO.TicketDTO.builder()
                            .guestSeqN(ticket.getGuestSeqN())
                            .qr(ticket.getQr())
                            .qrText(ticket.getQrText())
                            .usedAt(ticket.getUsedAt())
                            .build())
                    .collect(toList())));

    try {
        cdl.await();
    } catch (InterruptedException _ignore) {
        log.debug("Count down latch has been interrupted!", _ignore);
    }

    if (!failures.isEmpty()) {
        throw new HystrixBadRequestException("Request to submodule has been failed");
    }

 return dto;

我想选择最后一个。

我试过了<body> <iframe src=""></iframe> <iframe src=""></iframe> </body>，但它没有用。知道怎么做吗？

Answer 1

应该是

iframe:last-of-type { ... }

选择正文中的最后一个iFrame

1 个答案: