java completableFuture 是否有方法返回 CompletionStage<u>来处理异常？</u>

Question

Does java completableFuture have thenCompose method having param with CompletionStage value type to handle exception? like this method:

 public <U> CompletableFuture<U> thenCompose(BiFunction<? super T, Throwable, ? extends CompletionStage<U>> var1)

I want to handle the result and exception and convert the result use a function A returning a completableFuture, just like:

CompletableFuture<V> A(V v,Throwable e); 

and function A will call RPC. It is a async function.

CompletableFuture.handle(BiFunction<? super T, Throwable, ? extends U> var1) just convert the result, can not combine two completableFuture, can not meet my needs.

Answer 1

Have you tried to chain thenCompose with handle or exceptionally ?

It should meet your needs.