1.3、使用@ComponentScan扫描包，简单示例

代码结构&＃xff0c;按照要求新建简单的代码结构

1、在配置类DemoConfig中添加&＃64;ComponentScan扫描&＃xff0c;可以扫描到加上了Controller、Repository、Service等注解的代码

&＃64;Configuration
&＃64;ComponentScan(value &＃61; "cn.enjoy.*")
public class DemoConfig {}

2、输出扫描到的类

public class DemoApp {public static void main(String[] args){AnnotationConfigApplicationContext applicationContext &＃61;
new AnnotationConfigApplicationContext(DemoConfig.class);String[] beanDefinitionNames &＃61; applicationContext.getBeanDefinitionNames();for(String vo:beanDefinitionNames){System.out.println(vo);}}
}

输出结果

org.springframework.context.annotation.internalConfigurationAnnotationProcessor
org.springframework.context.annotation.internalAutowiredAnnotationProcessor
org.springframework.context.annotation.internalRequiredAnnotationProcessor
org.springframework.context.annotation.internalCommonAnnotationProcessor
org.springframework.context.event.internalEventListenerProcessor
org.springframework.context.event.internalEventListenerFactory
demoConfig
personController
personDao
personImpl
person