问获取web客户端web流量的响应时间

EN

webClient.get().uri("/bla").retrieve()
     .bodyToMono(String.class)
     .elapsed()  // map the stream's time into our streams data
     .doOnNext(tuple -> log.info("Milliseconds for retrieving {}", tuple.getT1()))
     .map(Tuple2::getT2) // after outputting the measurement, return the data only

Mono<String> resultMono = Mono.subscriberContext()
        .flatMap(context -> webClient.get()
                .uri("/foo")
                .retrieve()
                .bodyToMono(String.class)
                .doOnNext(ignored -> log.info("Execution duration is {} ms",
                        System.currentTimeMillis() - context.<Long>get("stopWatch"))))
        .subscriberContext(context -> context.put("stopWatch",
                System.currentTimeMillis()));