发布订阅模式

A--->B-->C---->D
subscribe: D--->C--->B--->A
onSubscribe: A--->B--->C---->D
request: D---->C--->B---->A
onNext: A--->B-->-C--->D
complete:A--->B---->C--->D

Flux.just

 Flux<String> fs = Flux.just("1","2");

Flux.fromArray

 Flux<String> fs = Flux.fromArray(new String[]{"1","2"});

Flux.fromIterable

Flux<String> fs = Flux.fromIterable(Arrays.asList("1","2"));

Flux.generate

s.complete 只能调用一次，要不然会报错一般用于同步

Flux<String> fs = Flux.generate(()->Integer.valueOf(1),(i,s)->{

            s.next(i+"");
            if(i == 10){
                s.complete();
            }
            return ++i;
        });
        fs.subscribe(s->System.out.println(s));

Flux.publishOn

异步发布

Flux<String> f1 = Flux.just("1","2","3","4","5");
        f1.doOnNext(s->{
            System.out.println(Thread.currentThread().getName());
        })
                .publishOn(Schedulers.newSingle("single1"),2).
        doOnNext(s->{
            System.out.println(Thread.currentThread().getName()+"_"+s);
        })
                .subscribe(
                       s->{
                           System.out.println(Thread.currentThread().getName());
                       } );

运行结果

main
main
single1-1_1
single1-1
single1-1_2
single1-1
single1-1
single1-1
single1-1_3
single1-1
single1-1_4
single1-1
single1-1
single1-1_5
single1-1

Flux.subscribeOn

异步订阅：
与publishOn的区别:
publishOn 作用于onNext,onCompelet
subscribeOn作用于 subscribe

 Flux<String> f1 = Flux.just("1","2","3","4","5");
        f1.doOnNext(s->{
            System.out.println(Thread.currentThread().getName());
        })
                .subscribeOn(Schedulers.newSingle("single1"),true).
        doOnNext(s->{
            System.out.println(Thread.currentThread().getName()+"_"+s);
        }) .subscribeOn(Schedulers.newSingle("single2"),true).
                doOnNext(s->{
                    System.out.println(Thread.currentThread().getName()+"_"+s);
                })
                .subscribe(
                       s->{
                           System.out.println(Thread.currentThread().getName());
                       } );

结果

single1-2
single1-2_1
single1-2_1
single1-2
single1-2
single1-2_2
single1-2_2
single1-2
single1-2
single1-2_3
single1-2_3
single1-2
single1-2
single1-2_4
single1-2_4
single1-2
single1-2
single1-2_5
single1-2_5
single1-2

Flux.create

支持背压用于异步

来源：oschina

链接：https://my.oschina.net/u/3217171/blog/3212281

标签

flux

string

reactor flux