使用 serviceKey 解决 DryIoc 中的子依赖失败

Resolving sub-dependency in DryIoc with a serviceKey fails

我想使用 serviceKey 来区分服务的不同实现。

代码解释:有个ICat接口,用来"say"一只猫的话"Meow"。 "Meow" 这个词来自 ISoundProducer 的实现(它被注入到 ICat 的实现中)。

我用相同的 serviceKey = "x" 注册了两个服务(ICat 和 ISoundProducer)。之后我尝试解析一个 ICat 实例,但它失败了。

这里是演示代码:

using DryIoc;
using System;

class Program
{
    static void Main(string[] args)
    {
        Container ioc = new Container();
        ioc.Register<ISoundProducer, GoodCatSoundProducer>(serviceKey: "x");
        ioc.Register<ICat, GoodCat>(serviceKey: "x");

        var c1 = ioc.Resolve<ICat>("x");
        c1.Say();

        Console.ReadKey();
    }
}

public interface ISoundProducer
{
    string ProduceSound();
}

public class GoodCatSoundProducer : ISoundProducer
{
    string ISoundProducer.ProduceSound() => "Meow";
}

public interface ICat
{
    void Say();
}

public class GoodCat : ICat
{
    private ISoundProducer _soundProducer;
    public GoodCat(ISoundProducer soundProducer) => this._soundProducer = soundProducer;
    void ICat.Say() => Console.WriteLine(_soundProducer.ProduceSound());
}

这给了我一个例外:

Unable to resolve ISoundProducer as parameter "soundProducer" in GoodCat: ICat {ServiceKey="x"} from container with normal and dynamic registrations: x, {ID=28, ImplType=GoodCatSoundProducer}}

我做错了什么?我怎样才能用另一个注入的服务解析一个服务,而它们都具有相同的 serviceKey?

指定依赖键:

ioc.Register<ICat, GoodCat>(serviceKey: "x",
  made: Made.Of(Parameters.Of.Type<ISoundProducer>(serviceKey: "x")));
ioc.Register<ISoundProducer, GoodCatSoundProducer>(serviceKey: "x");