16、spring注解学习（自动装配）——Aware注入Spring底层组件&原理

自动装配-Aware注入Spring底层组件&原理

• Aware 接口，提供了类似回调函数的功能
• 自定义组件想要使用Spring 容器底层的一些组件（Application Context，Bean Factory）;自定义组件需要实现xxxAware接口；在创建对象的时候，会调用接口规定的方法注入相关组件

  package org.springframework.beans.factory;
  
  public interface Aware {
  
  }

  ApplicationContextAware 自动注入IOC容器

  package org.springframework.context;
  
  import org.springframework.beans.BeansException;
  import org.springframework.beans.factory.Aware;
  
  public interface ApplicationContextAware extends Aware {
  
      void setApplicationContext(ApplicationContext applicationContext) throws BeansException;
  
  }

  ApplicationEventPublisherAware 注入事件派发器

  package org.springframework.context;
  
  import org.springframework.beans.factory.Aware;
  
  public interface ApplicationEventPublisherAware extends Aware {
  
      void setApplicationEventPublisher(ApplicationEventPublisher applicationEventPublisher);
  
  }

  BeanClassLoaderAware 类加载器

  package org.springframework.beans.factory;
  
  public interface BeanClassLoaderAware extends Aware {
  
      void setBeanClassLoader(ClassLoader classLoader);
  
  }

  BeanFactoryAware Bean工厂

  package org.springframework.beans.factory;
  
  import org.springframework.beans.BeansException;
  public interface BeanFactoryAware extends Aware {
  
      void setBeanFactory(BeanFactory beanFactory) throws BeansException;
  
  }

  BeanNameAware Bean名字

  package org.springframework.beans.factory;
  
  public interface BeanNameAware extends Aware {
  
      void setBeanName(String name);
  
  }

  EmbeddedValueResolverAware Embedded值解析器

  package org.springframework.context;
  
  import org.springframework.beans.factory.Aware;
  import org.springframework.util.StringValueResolver;
  
  public interface EmbeddedValueResolverAware extends Aware {
  
      void setEmbeddedValueResolver(StringValueResolver resolver);
  
  }

  EnvironmentAware 环境

  package org.springframework.context;
  
  import org.springframework.beans.factory.Aware;
  import org.springframework.core.env.Environment;
  
  public interface EnvironmentAware extends Aware {
  
      void setEnvironment(Environment environment);
  
  }

  ImportAware 导入相关的

  package org.springframework.context.annotation;
  
  import org.springframework.beans.factory.Aware;
  import org.springframework.core.type.AnnotationMetadata;
  
  public interface ImportAware extends Aware {
  
      void setImportMetadata(AnnotationMetadata importMetadata);
  
  }

  LoadTimeWeaverAware 导入相关的

  package org.springframework.context.weaving;
  
  import org.springframework.beans.factory.Aware;
  import org.springframework.instrument.classloading.LoadTimeWeaver;
  
  public interface LoadTimeWeaverAware extends Aware {
  
      void setLoadTimeWeaver(LoadTimeWeaver loadTimeWeaver);
  
  }

  MessageSourceAware 国际化

  package org.springframework.context;
  
  import org.springframework.beans.factory.Aware;
  
  public interface MessageSourceAware extends Aware {
  
      void setMessageSource(MessageSource messageSource);
  
  }

   NotificationPublisherAware 发送通知的支持

  package org.springframework.jmx.export.notification;
  
  import org.springframework.beans.factory.Aware;
  
  public interface NotificationPublisherAware extends Aware {
  
      void setNotificationPublisher(NotificationPublisher notificationPublisher);
  
  }

  ResourceLoaderAware 资源加载器

  package org.springframework.context;
  
  import org.springframework.beans.factory.Aware;
  import org.springframework.core.io.ResourceLoader;
  
  public interface ResourceLoaderAware extends Aware {
  
      void setResourceLoader(ResourceLoader resourceLoader);
  
  }

  得到结果：

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