CompactDisc类

package soundSystem;import org.springframework.stereotype.Component;
//注解@Componentpublic class CompactDisc {public CompactDisc() {super();System.out.println("compactdisc无参构造方法");}public void play(){System.out.println("正在播放音乐....");}
}

CDplay类

package soundSystem;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;@Component
public class CDPlayer {@Autowired(required = false)private CompactDisc cd;@Autowiredprivate Power power;public CDPlayer() {super();System.out.println("CDPlayer无参构造方法");}
/*@Autowiredpublic CDPlayer(CompactDisc cd) {this.cd = cd;System.out.println("CDPlayer有参构造方法");}*/
/*public CDPlayer(CompactDisc cd, Power power) {this.cd = cd;this.power = power;System.out.println("CDplayer的参数配置");}*/public void play(){power.supply();if(cd!=null) {cd.play();}}
}

 

appconfig类

package soundSystem;import org.springframework.context.annotation.ComponentScan;
//spring注解类
@ComponentScan
public class Appconfig {
}

power类

package soundSystem;import org.springframework.stereotype.Component;@Component
public class Power {public Power() {super();}public void supply(){System.out.println("电源宫殿中..");}
}

apptest类

package soundSystem;import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;//@RunWith(SpringJunit4ClassRunner.class)
//@ContextConfiguration(class=)
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = Appconfig.class)
public class AppTest {@Autowiredprivate CDPlayer player;@Testpublic void testPlay(){player.play();}
}

运行结果

[INFO ] 2019-10-30 18:42:32,195 method:org.springframework.test.context.support.AbstractTestContextBootstrapper.getDefaultTestExecutionListenerClassNames(AbstractTestContextBootstrapper.java:260)
Loaded default TestExecutionListener class names from location [META-INF/spring.factories]: [org.springframework.test.context.web.ServletTestExecutionListener, org.springframework.test.context.support.DirtiesContextBeforeModesTestExecutionListener, org.springframework.test.context.support.DependencyInjectionTestExecutionListener, org.springframework.test.context.support.DirtiesContextTestExecutionListener, org.springframework.test.context.transaction.TransactionalTestExecutionListener, org.springframework.test.context.jdbc.SqlScriptsTestExecutionListener]
[INFO ] 2019-10-30 18:42:32,203 method:org.springframework.test.context.support.AbstractTestContextBootstrapper.instantiateListeners(AbstractTestContextBootstrapper.java:209)
Could not instantiate TestExecutionListener [org.springframework.test.context.web.ServletTestExecutionListener]. Specify custom listener classes or make the default listener classes (and their required dependencies) available. Offending class: [javax/servlet/ServletContext]
[INFO ] 2019-10-30 18:42:32,205 method:org.springframework.test.context.support.AbstractTestContextBootstrapper.instantiateListeners(AbstractTestContextBootstrapper.java:209)
Could not instantiate TestExecutionListener [org.springframework.test.context.jdbc.SqlScriptsTestExecutionListener]. Specify custom listener classes or make the default listener classes (and their required dependencies) available. Offending class: [org/springframework/transaction/interceptor/TransactionAttribute]
[INFO ] 2019-10-30 18:42:32,206 method:org.springframework.test.context.support.AbstractTestContextBootstrapper.instantiateListeners(AbstractTestContextBootstrapper.java:209)
Could not instantiate TestExecutionListener [org.springframework.test.context.transaction.TransactionalTestExecutionListener]. Specify custom listener classes or make the default listener classes (and their required dependencies) available. Offending class: [org/springframework/transaction/interceptor/TransactionAttributeSource]
[INFO ] 2019-10-30 18:42:32,208 method:org.springframework.test.context.support.AbstractTestContextBootstrapper.getTestExecutionListeners(AbstractTestContextBootstrapper.java:187)
Using TestExecutionListeners: [org.springframework.test.context.support.DirtiesContextBeforeModesTestExecutionListener@1786f9d5, org.springframework.test.context.support.DependencyInjectionTestExecutionListener@704d6e83, org.springframework.test.context.support.DirtiesContextTestExecutionListener@43a0cee9][INFO ] 2019-10-30 18:42:32,393 method:org.springframework.context.support.AbstractApplicationContext.prepareRefresh(AbstractApplicationContext.java:583)
Refreshing org.springframework.context.support.GenericApplicationContext@4df828d7: startup date [Wed Oct 30 18:42:32 CST 2019]; root of context hierarchy
[DEBUG] 2019-10-30 18:42:32,427 method:org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221)
Creating shared instance of singleton bean 'org.springframework.context.annotation.internalConfigurationAnnotationProcessor'
[DEBUG] 2019-10-30 18:42:32,427 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:449)
Creating instance of bean 'org.springframework.context.annotation.internalConfigurationAnnotationProcessor'
[DEBUG] 2019-10-30 18:42:32,454 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
Eagerly caching bean 'org.springframework.context.annotation.internalConfigurationAnnotationProcessor' to allow for resolving potential circular references
[DEBUG] 2019-10-30 18:42:32,458 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:485)
Finished creating instance of bean 'org.springframework.context.annotation.internalConfigurationAnnotationProcessor'
[DEBUG] 2019-10-30 18:42:32,557 method:org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221)
Creating shared instance of singleton bean 'org.springframework.context.annotation.internalAutowiredAnnotationProcessor'
[DEBUG] 2019-10-30 18:42:32,557 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:449)
Creating instance of bean 'org.springframework.context.annotation.internalAutowiredAnnotationProcessor'
[DEBUG] 2019-10-30 18:42:32,559 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
Eagerly caching bean 'org.springframework.context.annotation.internalAutowiredAnnotationProcessor' to allow for resolving potential circular references
[DEBUG] 2019-10-30 18:42:32,590 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:485)
Finished creating instance of bean 'org.springframework.context.annotation.internalAutowiredAnnotationProcessor'
[DEBUG] 2019-10-30 18:42:32,591 method:org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221)
Creating shared instance of singleton bean 'org.springframework.context.annotation.internalRequiredAnnotationProcessor'
[DEBUG] 2019-10-30 18:42:32,591 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:449)
Creating instance of bean 'org.springframework.context.annotation.internalRequiredAnnotationProcessor'
[DEBUG] 2019-10-30 18:42:32,593 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
Eagerly caching bean 'org.springframework.context.annotation.internalRequiredAnnotationProcessor' to allow for resolving potential circular references
[DEBUG] 2019-10-30 18:42:32,599 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:485)
Finished creating instance of bean 'org.springframework.context.annotation.internalRequiredAnnotationProcessor'
[DEBUG] 2019-10-30 18:42:32,606 method:org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:730)
Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@158da8e: defining beans [org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.event.internalEventListenerProcessor,org.springframework.context.event.internalEventListenerFactory,appconfig,CDPlayer,power]; root of factory hierarchy
[DEBUG] 2019-10-30 18:42:32,606 method:org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:251)
Returning cached instance of singleton bean 'org.springframework.context.annotation.internalConfigurationAnnotationProcessor'
[DEBUG] 2019-10-30 18:42:32,606 method:org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:251)
Returning cached instance of singleton bean 'org.springframework.context.annotation.internalAutowiredAnnotationProcessor'
[DEBUG] 2019-10-30 18:42:32,607 method:org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:251)
Returning cached instance of singleton bean 'org.springframework.context.annotation.internalRequiredAnnotationProcessor'
[DEBUG] 2019-10-30 18:42:32,607 method:org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221)
Creating shared instance of singleton bean 'org.springframework.context.event.internalEventListenerProcessor'
[DEBUG] 2019-10-30 18:42:32,607 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:449)
Creating instance of bean 'org.springframework.context.event.internalEventListenerProcessor'
[DEBUG] 2019-10-30 18:42:32,613 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
Eagerly caching bean 'org.springframework.context.event.internalEventListenerProcessor' to allow for resolving potential circular references
[DEBUG] 2019-10-30 18:42:32,618 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:485)
Finished creating instance of bean 'org.springframework.context.event.internalEventListenerProcessor'
[DEBUG] 2019-10-30 18:42:32,619 method:org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221)
Creating shared instance of singleton bean 'org.springframework.context.event.internalEventListenerFactory'
[DEBUG] 2019-10-30 18:42:32,619 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:449)
Creating instance of bean 'org.springframework.context.event.internalEventListenerFactory'
[DEBUG] 2019-10-30 18:42:32,620 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
Eagerly caching bean 'org.springframework.context.event.internalEventListenerFactory' to allow for resolving potential circular references
[DEBUG] 2019-10-30 18:42:32,623 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:485)
Finished creating instance of bean 'org.springframework.context.event.internalEventListenerFactory'
[DEBUG] 2019-10-30 18:42:32,624 method:org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221)
Creating shared instance of singleton bean 'appconfig'
[DEBUG] 2019-10-30 18:42:32,625 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:449)
Creating instance of bean 'appconfig'
[DEBUG] 2019-10-30 18:42:32,626 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
Eagerly caching bean 'appconfig' to allow for resolving potential circular references
[DEBUG] 2019-10-30 18:42:32,628 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:485)
Finished creating instance of bean 'appconfig'
[DEBUG] 2019-10-30 18:42:32,629 method:org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221)
Creating shared instance of singleton bean 'CDPlayer'
[DEBUG] 2019-10-30 18:42:32,629 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:449)
Creating instance of bean 'CDPlayer'
CDPlayer无参构造方法
[DEBUG] 2019-10-30 18:42:32,634 method:org.springframework.beans.factory.annotation.InjectionMetadata.checkConfigMembers(InjectionMetadata.java:72)
Registered injected element on class [soundSystem.CDPlayer]: AutowiredFieldElement for private soundSystem.CompactDisc soundSystem.CDPlayer.cd
[DEBUG] 2019-10-30 18:42:32,634 method:org.springframework.beans.factory.annotation.InjectionMetadata.checkConfigMembers(InjectionMetadata.java:72)
Registered injected element on class [soundSystem.CDPlayer]: AutowiredFieldElement for private soundSystem.Power soundSystem.CDPlayer.power
[DEBUG] 2019-10-30 18:42:32,634 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
Eagerly caching bean 'CDPlayer' to allow for resolving potential circular references
[DEBUG] 2019-10-30 18:42:32,638 method:org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:86)
Processing injected element of bean 'CDPlayer': AutowiredFieldElement for private soundSystem.CompactDisc soundSystem.CDPlayer.cd
[DEBUG] 2019-10-30 18:42:32,648 method:org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:86)
Processing injected element of bean 'CDPlayer': AutowiredFieldElement for private soundSystem.Power soundSystem.CDPlayer.power
[DEBUG] 2019-10-30 18:42:32,653 method:org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221)
Creating shared instance of singleton bean 'power'
[DEBUG] 2019-10-30 18:42:32,654 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:449)
Creating instance of bean 'power'
[DEBUG] 2019-10-30 18:42:32,655 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
Eagerly caching bean 'power' to allow for resolving potential circular references
[DEBUG] 2019-10-30 18:42:32,658 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:485)
Finished creating instance of bean 'power'
[DEBUG] 2019-10-30 18:42:32,658 method:org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.registerDependentBeans(AutowiredAnnotationBeanPostProcessor.java:535)
Autowiring by type from bean name 'CDPlayer' to bean named 'power'
[DEBUG] 2019-10-30 18:42:32,660 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:485)
Finished creating instance of bean 'CDPlayer'
[DEBUG] 2019-10-30 18:42:32,661 method:org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:251)
Returning cached instance of singleton bean 'power'
[DEBUG] 2019-10-30 18:42:32,662 method:org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:251)
Returning cached instance of singleton bean 'org.springframework.context.event.internalEventListenerFactory'
[DEBUG] 2019-10-30 18:42:32,762 method:org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:251)
Returning cached instance of singleton bean 'lifecycleProcessor'
[DEBUG] 2019-10-30 18:42:32,772 method:org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:86)
Processing injected element of bean 'soundSystem.AppTest': AutowiredFieldElement for private soundSystem.CDPlayer soundSystem.AppTest.player
[DEBUG] 2019-10-30 18:42:32,773 method:org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:251)
Returning cached instance of singleton bean 'CDPlayer'
[DEBUG] 2019-10-30 18:42:32,774 method:org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.registerDependentBeans(AutowiredAnnotationBeanPostProcessor.java:535)
Autowiring by type from bean name 'soundSystem.AppTest' to bean named 'CDPlayer'
电源宫殿中..
[INFO ] 2019-10-30 18:42:32,783 method:org.springframework.context.support.AbstractApplicationContext.doClose(AbstractApplicationContext.java:984)
Closing org.springframework.context.support.GenericApplicationContext@4df828d7: startup date [Wed Oct 30 18:42:32 CST 2019]; root of context hierarchy
[DEBUG] 2019-10-30 18:42:32,785 method:org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:251)
Returning cached instance of singleton bean 'lifecycleProcessor'
[DEBUG] 2019-10-30 18:42:32,786 method:org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingletons(DefaultSingletonBeanRegistry.java:512)
Destroying singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@158da8e: defining beans [org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.event.internalEventListenerProcessor,org.springframework.context.event.internalEventListenerFactory,appconfig,CDPlayer,power]; root of factory hierarchy