Spring中的@Configuration和@Component有什么区别? [英] What is the difference between @Configuration and @Component in Spring?

问题描述

@ComponentScan同时使用@Configuration和@Component创建bean.交换时，这两个注释都可以正常工作.那有什么区别?

@ComponentScan creates beans using both @Configuration and @Component. Both these annotations work fine when swapped. What is the difference then?

推荐答案

@Configuration表示一个类声明一个或多个@Bean 方法，可以由Spring容器处理以生成bean 这些bean在运行时的定义和服务请求

@Configuration Indicates that a class declares one or more @Bean methods and may be processed by the Spring container to generate bean definitions and service requests for those beans at runtime

@Component表示带注释的类是组件".这样的 类在使用时被视为自动检测的候选者 基于注释的配置和类路径扫描.

@Component Indicates that an annotated class is a "component". Such classes are considered as candidates for auto-detection when using annotation-based configuration and classpath scanning.

@Configuration带有@Component元注释，因此 @Configuration类是组件扫描的候选对象

@Configuration is meta-annotated with @Component, therefore @Configuration classes are candidates for component scanning

您可以在此处看到更多信息:

You can see more here:

@Configuration也是@Component，但是@Component不能像@Configuration那样起作用.

A @Configuration is also a @Component, but a @Component cannot act like a @Configuration.

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