您可以利用
CompletableFuture这种方式：
public String getResult() { // Create Stream of tasks: Stream<Supplier<List<String>>> tasks = Stream.of( () -> getServerListFromDB(), () -> getAppListFromDB(), () -> getUserFromDB()); List<List<String>> lists = tasks // Supply all the tasks for execution and collect CompletableFutures .map(CompletableFuture::supplyAsync).collect(Collectors.toList()) // Join all the CompletableFutures to gather the results .stream() .map(CompletableFuture::join).collect(Collectors.toList()); // Use the results. They are guaranteed to be ordered in the same way as the tasks return getResult(lists.get(0), lists.get(1), lists.get(2));}
