将RxJava Single转换为Java CompletableFuture

Question

我有一个RxJava2 Integer Single，如何将其转换为java.util.concurrent.CompletableFuture？

Single<Integer> single = Single.just(1);
java.util.concurrent.CompletableFuture<Integer> cf = ???

Answer 1

您可以使用RxJavaJdk8Interop：

CompletionStage<Integer> cs = Single.just(1)
.delay(1, TimeUnit.SECONDS)
.to(SingleInterop.get());

Answer 2

那是可以做到的：

Single<Integer> just = Single.just(1);
CompletableFuture<Integer> cf = new CompletableFuture<>();
just.subscribe(cf::complete);