java - Spring 中具有两个 id 的同一实例

Question

有没有办法在 Spring 上下文中使用两个不同的 ID 来引用同一个实例？

我要寻找的是一种为单例范围的 bean id 取别名的方法。

Answer 1

http://docs.spring.io/autorepo/docs/spring/4.1.3.RELEASE/javadoc-api/org/springframework/context/annotation/Bean.htmlBean 名称部分

the name attribute may be used. Also note that name accepts an array of Strings. This is in order to allow for specifying multiple names (i.e., aliases) for a single bean.

@Bean(name={"b1","b2"}) // bean available as 'b1' and 'b2', but not 'myBean'
public MyBean myBean() {
    // instantiate and configure MyBean obj
    return obj;
}