如何从单声道获取字段值<Class>？

Question

我有两个方法。

`Mono<Order> order = orderService.getById(UUID id);`

和

Mono<Truck> truck = vehicleService.getByTruckId(UUID truckId);

我从第一个请求中获得TruckId值。查看Order类

Order {
private UUID id;
private String name;
private UUID truckId;
}

如何将truckId的值传递给vehicleService.getByTruckId(UUID truckId);而不阻塞?

Answer 1

如果你只关心卡车

Mono<Truck> truckMono = order.flatMap(o -> getByTruckId(o.truckId));

如果你关心顺序的聚合，它是卡车

Mono<Order> orderMono = getById(UUID.randomUUID());
Mono<Truck> truckMono = orderMono.flatMap(o -> getByTruckId(o.truckId));
Mono<Result> resultMono = Mono.zip(orderMono, truckMono)
.flatMap(m -> Mono.just(new Result(m.getT1(), m.getT2())));

结果类

class Result {
public Result(Order order, Truck truck) {
this.order = order;
this.truck = truck;
}
Order order;
Truck truck;
}