Spring可配置bean注入

Question

除了工厂模式之外，有没有办法注入bean依赖项可配置？ 我有3个类实现相同的接口并有3个bean定义。 我想在其他类中更改那些bean吗？ 对于例子，是否可以读取bean名称表单conf文件并将其用作变量？

Answer 1

是的，您可以使用@Qualifier注释。 由于您有3个实现相同接口的类，因此请使用不同的名称命名这些类并使用@Qualifier注释。

Spring文档说： autowiring by type may lead to multiple candidates, it is often necessary to have more control over the selection process. One way to accomplish this is with Spring's @Qualifier annotation. autowiring by type may lead to multiple candidates, it is often necessary to have more control over the selection process. One way to accomplish this is with Spring's @Qualifier annotation.