无法从List转换为List

Question

我有一个方法createCompliance响应（），它返回BOLConplationObject对象，在此之前，我将其更改为BOLConplationMono，因为我必须在其中调用另一个反应性服务。但是在这样做之后，我调用该服务的当前服务在第6行和第7行出现错误。

1) Cannot convert from Mono<Object> to Mono<List<BOLCompliance>>
2) Cannot convert from List<Mono<BOLCompliance>> to List<BOLCompliance>

    private Mono<List<BOLCompliance>> getComplienceRouteLink(BOLRouteLink routeLink, BillOfLadingResponse bol) {
        if (null != routeLink.getComplianceIds() && !routeLink.getComplianceIds().isEmpty()) {
            Mono<List<Compliance>> complianceList = Flux
                    .fromIterable(routeLink.getComplianceIds()).flatMap(cmp ->
                            complianceCaller.getComplianceById(cmp)).collectList();
            return complianceList.flatMap(compliancesOld -> {
                List<BOLCompliance> complianceResponses = compliancesOld.parallelStream()
                        .map(compliance -> createComplianceResponse(compliance,bol)
                        ).collect(Collectors.toList());
                return Mono.just(complianceResponses);
            });
        }

我为其更改了退货类型的另一项服务是

private Mono<BOLCompliance> createComplianceResponse(Compliance compliance, BillOfLadingResponse bol);

Answer 1

请看一下这个，它可能会取代您的代码：

private Flux<BOLCompliance> getComplienceRouteLink(BOLRouteLink routeLink, BillOfLadingResponse bol) {
    return Mono.justOrEmpty(routeLink.getComplianceIds())
        .flatMapMany(Flux::fromIterable)
        .flatMap(id -> complianceCaller.getComplianceById(id))
        .flatMap(compliance -> createComplianceResponse(compliance, bol));
}

而不是返回Mono