spring-context是否在bean实例上支持JSR-330 Qualifier? [英] Does spring-context support JSR-330 Qualifier on bean instances?

问题描述

Spring有其自己的Qualifier批注，我认为它等效于javax.inject.Named批注，而该批注又是JSR-330中的一个具体限定词.

Spring has its own Qualifier annotation, I think it's equivalent to the javax.inject.Named annotation, which in turn is a concrete qualifier in JSR-330.

那么，我想知道Spring的哪个版本(如果有的话)支持Qualifier?

So, I'm wondering which version of Spring, if any, supports Qualifier?

这是我的示例用法，不幸的是，它不适用于spring-context 3.0.5:

Here is my example usage, unfortunately it doesn't work with spring-context 3.0.5:

@Retention(RUNTIME)
@javax.inject.Qualifier
public @interface Version {

    String value();

}

@Configuration
public class MyConfig {

    @Bean("book-12") @Version("a") Book book12a() { ... }

    @Bean("book-12") @Version("b") Book book12b() { ... }

}

@Component
public class UserClass {

    @Inject @Named("book-12") Book anybook12;

    @Inject @Named("book-12") @Version("b") Book book12_b;

}

推荐答案

是的，它支持所有javax.inject.*注释.我本人已使用javax.inject.Qualifier

Yes, it supports all javax.inject.* annotations. I myself have used the javax.inject.Qualifier

顺便说一句，我假设您要使用@Service或@Component而不是@Bean，并且您需要将Book类进行弹簧管理.

Btw, I assume you want @Service or @Component instead of @Bean, and you need your Book class to be made spring-managed.

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