flux2

1.publish
生成的是connectableFlux,connectableFlux发出从connect到disconnect之间的数据，当对象销毁时也会自动disconnect

        ConnectableFlux<LocalDateTime> flux = Flux.interval(Duration.ofMillis(1)).map(seq-> LocalDateTime.now())
                .publish(1);

        flux.subscribe(s->{
            System.out.println(s + "55555555");
        });

        flux.connect();
        Thread.sleep(100);

        flux.subscribe(s->{
            System.out.println(s + "111111111");
        });

        flux.subscribe(s->{
            System.out.println(s + "222222222");
        });
        Thread.sleep(100);
        flux.disconnect();

上述代码进行了三次subscribe，每个subscribe都会收到 max(subscribe时间，connect时间）到disconnect时间的数据，

publish还有一个参数，表示connect之后提前先跳过x调数据之后开始emit

2.replay

生成的是connectableFlux,emit从connect到disconnect之间的数据，不论什么时候subscribe

        final AtomicInteger i = new AtomicInteger(0);
        final AtomicInteger j = new AtomicInteger(0);

        ConnectableFlux<String> flux = Flux.interval(Duration.ofMillis(1)).map(seq-> LocalDateTime.now()).map(s->{
            System.out.println(i.getAndIncrement());
            return s.toString();
                }).replay();


        flux.subscribe(s->System.out.println(j.getAndIncrement()));
        flux.connect();
        Thread.sleep(100);

连词打印的结果完全一致

 

3.autoConnect形式，

表示connectableFlux不需要connect

 

        Flux<LocalDateTime> flux2 = Flux.interval(Duration.ofMillis(1)).map(seq-> LocalDateTime.now()).publish().autoConnect(2);
        
        flux2.subscribe(s->System.out.println(j.getAndIncrement()));

        flux2.subscribe(s->System.out.println(j.getAndIncrement()));

autoConnect的参数表示subscribe多少次后开始emit数据