Guice相当于Spring的@Autowire实例列表 [英] Guice equivalent of Spring's @Autowire list of instances

问题描述

在春季，当我这样做:

@Autowire
List<MyInterface> myInterfaces;

然后该列表将由实现MyInterface的所有bean填充.我不必创建List<MyInterface>类型的bean.

then this list will get populated by all beans which implement MyInterface. I didn't have to create bean of type List<MyInterface>.

我正在Google Guice中寻找这种行为.

I'm looking for such behaviour in Google Guice.

到目前为止，我去了:

Multibinder<MyInterface> myInterfaceBinder = MultiBinder.newSetBinder(binder(), MyInterface.class);

现在，如果我有一个实现MyInterface的bean并绑定了它，请通过以下方式进行说明:

Now if I have a bean which implements MyInterface and I bind it, say via:

bind(MyInterfaceImpl.class).asEagerSingleton();

它不会包含在我的多功能装订器中.我需要添加:

it won't be included in my multibinder. I need to add:

myInterfaceBinder.addBinding.to(MyInterfaceImpl.class);

这比Spring所提供的更为复杂.所以我很想知道我是否以错误的方式使用它.那么有没有更简单的方法来实现这一目标?

This is somewhat more complicated than what Spring offers. So I was wonmdering whether I'm not using it in wrong way. So is there easier way of achieving this?

推荐答案

我自己还没有那样使用它，但是根据Guice的API文档，我认为您应该能够编写的内容不超过此内容一次:

I haven't used it that way myself, yet, but according to Guice's API documentation, I think you should be able to write something not much more than this once:

bindListener(Matchers.subclassesOf(MyInterface.class), new TypeListener() {
  public <I> void hear(TypeLiteral<I> typeLiteral,
                       TypeEncounter<I> typeEncounter) {
    myInterfaceBinder.addBinding().to(typeLiteral);
  }
}

然后，当您通过绑定实现时

Then, when you bind an implementation via

bind(MyInterfaceImpl.class).asEagerSingleton();

它应该被自动添加到您的多粘合剂中.

it should be added to your multibinder automatically.

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