Is it possible to set a bean name using annotations in Spring Framework?

Question

I have a bean like this:

@Bean
public String myBean(){
    return "My bean";
}

I want to autowire it:

@Autowired
@Qualifier("myBean")
public void setMyBean(String myBean){
    this.myBean=myBean;
}

I need something like:

@Bean(name="myCustomBean")

Is it possible to use custom names names for beans out of the box? If it isn't possible out of the box then how to create such a bean?

Answer 1

You can set the name by using any one of the @Component annotations. Here is the official doc.

@Service("myMovieLister")
public class SimpleMovieLister {
    // ...
}

This will create a bean namely myMovieLister instead of simpleMovieLister.

For JavaConfig, This is applicable for your example which is using @Bean.

2.2.6. Customizing bean naming

By default, JavaConfig uses a @Bean method's name as the name of the resulting bean. This functionality can be overridden, however, using the BeanNamingStrategy extension point.

public class Main {
    public static void main(String[] args) {
        JavaConfigApplicationContext ctx = new JavaConfigApplicationContext();
        ctx.setBeanNamingStrategy(new CustomBeanNamingStrategy());
        ctx.addConfigClass(MyConfig.class);
        ctx.refresh();
        ctx.getBean("customBeanName");
    }
} 

============================

Update:

What you are asking is already available in Spring 4.3.3

By default, configuration classes use a @Bean method’s name as the name of the resulting bean. This functionality can be overridden, however, with the name attribute.

@Configuration
public class AppConfig {

    @Bean(name = "myFoo")
    public Foo foo() {
        return new Foo();
    }

}