通过消息队列未收到Spring Cloud Stream消息

Question

我有2个微服务（图像和注释），它们通过Spring Cloud Stream与代理Rabbit MQ相互通信（由eureka发现服务发现）。我想从图像微服务发送一条消息以评论微服务。 问题在于未调用CommentController StreamListener方法“保存”。

图像微服务-> CommentController.java：

public CommentController(MeterRegistry meterRegistry) {
    this.meterRegistry = meterRegistry;
    this.flux = Flux.<Message<Comment>>create(
            emitter -> this.commentSink = emitter,
            FluxSink.OverflowStrategy.IGNORE)
            .publish()
            .autoConnect();
}
@PostMapping("/comments")
public Mono<String> addComment(Mono<Comment> newComment) {
    if (commentSink != null) {
        return newComment
            .map(comment -> {
                commentSink.next(MessageBuilder
                    .withPayload(comment)
                    .setHeader(MessageHeaders.CONTENT_TYPE,
                        MediaType.APPLICATION_JSON_VALUE)
                    .build());
                return comment;
            })
            .flatMap(comment -> {
                meterRegistry
                    .counter("comments.produced", "imageId", comment.getImageId())
                    .increment();
                return Mono.just("redirect:/");
            });
    } else {
        return Mono.just("redirect:/");
    }
}
    @StreamEmitter
@Output(Source.OUTPUT)
public void emit(FluxSender output) {
    output.send(this.flux);
}

评论微服务-> CommentService.java

@StreamListener
@Output(Processor.OUTPUT)
public Flux<Void> save(@Input(Processor.INPUT) Flux<Comment> newComment) {
    return repository
        .saveAll(newComment)
        .flatMap(comment -> {
            meterRegistry
                .counter("comments.consumed", "imageId", comment.getImageId())
                .increment();
            return Mono.empty();
        });
}

CommentService.java-> @Service @EnableBinding(Processor.class) public class CommentService { ....

Repository which I cloned Chapter7/part 1

Image Microservice -> CommentController.java

Comment Microservice -> CommentService.java