如何使用Guice获取接口的所有实现者/子类？ [英] How to get all implementors/subclasses of an interface with Guice?

问题描述

使用Spring，您可以定义一个数组属性，并让Spring注入从给定类型派生的每个（@Component）类中的一个。

With Spring, you can define an array property and have Spring inject one of every (@Component) class that derives from the given type.

是否有等价物在Guice这个？或者添加此行为的扩展点？

Is there an equivalent for this in Guice? Or an extension point to add this behavior?

推荐答案

这看起来像Guice的用例 MultiBinder 。你可能有类似的东西：

This looks like a use case for Guice MultiBinder. You could have something like that:

interface YourInterface {
    ...
}

class A implements YourInterface {
    ...
}

class B implements YourInterface {
    ...
}

class YourModule extends AbstractModule {
    @Override protected void configure() {
        Multibinder.newSetBinder(YourInterface.class).addBinding().to(A.class):
        Multibinder.newSetBinder(YourInterface.class).addBinding().to(B.class):
    }
}

您可以在任何地方注入 Set< YourInterface> ：

And you can inject a Set<YourInterface> anywhere:

class SomeClass {
    @Inject public SomeClass(Set<YourInterface> allImplementations) {
        ...
    }
}

这应符合您的需求。

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