标签：vat img row red one span tap spring 结果
自定义组件想要使用Spring容器底层的一些组件（ApplicationContext，BeanFactory，xxx）；自定义组件实现xxxAware；在创建对象的时候，会调用接口规定的方法注入相关组件；Aware；把Spring底层一些组件注入到自定义的Bean中；xxxAware：功能使用xxxProcessor；ApplicationContextAware==》ApplicationContextAwareProcessor；
package com.aware.demo.bean; import org.springframework.beans.BeansException; import org.springframework.beans.factory.BeanNameAware; import org.springframework.context.ApplicationContext; import org.springframework.context.ApplicationContextAware; import org.springframework.context.EmbeddedValueResolverAware; import org.springframework.stereotype.Component; import org.springframework.util.StringValueResolver; @Component public class AwareDemo implements ApplicationContextAware, BeanNameAware , EmbeddedValueResolverAware { private ApplicationContext applicationContext; @Override public void setApplicationContext(ApplicationContext applicationContext) throws BeansException { System.out.println("这是传入的ioc容器："+applicationContext); this.applicationContext=applicationContext; } @Override public void setBeanName(String s) { System.out.println("当前bean的名字:"+s); } @Override public void setEmbeddedValueResolver(StringValueResolver stringValueResolver) { String s = stringValueResolver.resolveStringValue("你好${os.name},我是#{20*18}"); System.out.println(s); } }
package com.aware.demo.bean; import org.springframework.context.annotation.AnnotationConfigApplicationContext; public class AppMain { public static void main(String[] args) { AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(Config.class); String[] bean = context.getBeanDefinitionNames(); for (String b:bean) { System.out.println(b); } } }
运行结果：
当前bean的名字:awareDemo 10:53:03.196 [main] DEBUG org.springframework.core.env.PropertySourcesPropertyResolver - Found key ‘os.name‘ in PropertySource ‘systemProperties‘ with value of type String 你好Windows 10,我是360 这是传入的ioc容器：org.springframework.context.annotation.AnnotationConfigApplicationContext@544a2ea6, started on Sun Aug 18 10:53:02 CST 2019 org.springframework.context.annotation.internalConfigurationAnnotationProcessor org.springframework.context.annotation.internalAutowiredAnnotationProcessor org.springframework.context.annotation.internalCommonAnnotationProcessor org.springframework.context.event.internalEventListenerProcessor org.springframework.context.event.internalEventListenerFactory config awareDemo
标签：vat img row red one span tap spring 结果
原文地址：https://www.cnblogs.com/mingyuan1031/p/spring.html
