这样我就可以从Source [ByteString，Any]中实现inputStream和Feature [ByteString]
val bs = fileStream.runWith(Sink.head)
val is = fileStream.runWith(StreamConverters.asInputStream())
如何通过一项操作获取它？
如何从Source [ByteString，Any] akka流中实现2个参数
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问答
xsj21 回答：如何从Source [ByteString，Any] akka流中实现2个参数
这是您要寻找的吗？
val bs: (Future[ByteString],InputStream) = Source.empty[ByteString]
.alsoToMat(Sink.head)(Keep.right)
.toMat(StreamConverters.asInputStream())(Keep.both)
.run()