Question

我有这段代码，它执行一些执行http调用的功能的并行执行，该功能位于从RestEeasy JAX-RS资源调用的@Singleton服务中

final Flowable<Map<String, List<Data>>> relatedMaps = Flowable.range(0, requestList.size())
 concatMapEager(index ->
    fetchByHttp(requestList.get(index))
            .subscribeOn(Schedulers.io())
                  .toFlowable(),
                        requestList.size(),
                        1
 );

其中fetchByHttp为：

 Singe fetchByHttp(request) {
 return Single.fromCallable( () -> {
    ...restClient.getData(request)
    ...

requestList.size（）大约为100。

和有时，我遇到此问题：

14:28:35 ERROR [or.jb.re.re.i18n] (RxCachedThreadScheduler-232) RESTEASY002020: Unhandled asynchronous exception, sending back 500: java.lang.NullPointerException
    at org.jboss.resteasy.core.ServerResponseWriter.writeNomapResponse(ServerResponseWriter.java:91)
    at org.jboss.resteasy.core.AsyncResponseConsumer.sendBuiltResponse(AsyncResponseConsumer.java:148)
    at org.jboss.resteasy.core.AsyncResponseConsumer.internalResume(AsyncResponseConsumer.java:115)
    at org.jboss.resteasy.core.AsyncResponseConsumer$CompletionStageResponseConsumer.accept(AsyncResponseConsumer.java:237)
    at org.jboss.resteasy.core.AsyncResponseConsumer$CompletionStageResponseConsumer.accept(AsyncResponseConsumer.java:216)
    at java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:760)
    at java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:736)
    at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474)
    at java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:1962)
    at io.reactivex.internal.observers.ConsumerSingleObserver.onSuccess(ConsumerSingleObserver.java:62)
    at io.smallrye.context.propagators.rxjava2.ContextPropagatorOnSingleCreateAction$ContextCapturerSingle.lambda$onSuccess$2(ContextPropagatorOnSingleCreateAction.java:50)
    at io.smallrye.context.SmallRyeThreadContext.lambda$withContext$0(SmallRyeThreadContext.java:215)
    at io.smallrye.context.propagators.rxjava2.ContextPropagatorOnSingleCreateAction$ContextCapturerSingle.onSuccess(ContextPropagatorOnSingleCreateAction.java:50)
    at io.smallrye.context.propagators.rxjava2.ContextPropagatorOnSingleCreateAction$ContextCapturerSingle.lambda$onSuccess$2(ContextPropagatorOnSingleCreateAction.java:50)
    at io.smallrye.context.SmallRyeThreadContext.lambda$withContext$0(SmallRyeThreadContext.java:215)

在资源方面：

    @Timeout(20000)
    @GET
    @Path("/data")
    @Produces(MediaType.APPLICATION_JSON)
    public CompletionStage<Data> getData(){

        final Single<Data> dataSingle = service.getData();

        final CompletableFuture<Data> dataFuture = new CompletableFuture<>();
        dataSingle
                //.subscribeOn(Schedulers.io())
                .subscribe(dataFuture::complete);

        return dataFuture;
    }

找到了this。如果是固定的。然后问：发生了什么事以及如何处理？

Quarkus 1.0 Final。

RESTEASY002020：Quarkus 1.0 Final和RestEeasy JAX-RS资源未处理的异步异常

0 个答案: