如何声明Spring bean autowire-candidate =" false"什么时候使用注释？ [英] How to declare a Spring bean autowire-candidate="false" when using annotations?

问题描述

我正在使用 @ComponentScan 和 @Component 来定义我的spring bean。我想要的是宣布其中一个bean为 autowire-candidate = false 。

I am using @ComponentScan and @Component to define my spring beans. What I would like is to declare one of these beans to be autowire-candidate=false.

这可以在xml中使用此属性来完成。是不是注释中的等价物？

This could be done with this attribute in xml. Isn't there the equivalent in annotations?

我想要这个的原因是因为我有2个相同接口的实现，我不想使用 @Qualifier 。

The reason I want this is because I have 2 implementations of the same interface and I don't want to use @Qualifier.

编辑：使用@Primary是一种有效的解决方法，但autowire-candidate在我看来似乎是一个有用的功能，有自己的语义。

Using @Primary is a valid work-around, but autowire-candidate seems to me like a useful feature with its own semantics.

谢谢

推荐答案

看起来Spring拒绝 autowire- candidate = false 概念，不再支持。没有带注释的模拟，所以 @Primary 是你注意到的最好的解决方法。

Looks like Spring refused autowire-candidate=false concept and it no longer supported. There is no analogue with annotations, so @Primary is the best work-around as you noticed.

另一种方式是使用自定义 org.springframework.beans.factory.support.AutowireCandidateResolver ，它在 DefaultListableBeanFactory 中用于逻辑从autowire候选人中排除不受欢迎的bean。在这种情况下，该技术将类似于 autowire-candidate = false 在 SimpleAutowireCandidateResolver 中使用的技术。

Another way is to use custom org.springframework.beans.factory.support.AutowireCandidateResolver, which is used in DefaultListableBeanFactory, with logic that exclude undesirable beans from autowire candidates. In such case, the technology will be similar to that used for autowire-candidate=false in SimpleAutowireCandidateResolver.

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