首先创建项目

pom.xml的配置文件

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>com.geyao</groupId><artifactId>spring01geyao</artifactId><version>1.0-SNAPSHOT</version><dependencies><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>4.3.13.RELEASE</version></dependency><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.17</version></dependency></dependencies>
</project>

配置log4j的配置文件

### 设置###
log4j.rootLogger = INFO,stdout### 输出信息到控制抬 ###
log4j.appender.stdout = org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout = org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern = [%-5p] %d{yyyy-MM-dd HH:mm:ss,SSS} method:%l%n%m%n
log4j.category.org.springframework.beans.factory=DEBUG

CompactDisc类

package soundSystem;import org.springframework.stereotype.Component;@Component
public 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 {private CompactDisc cd;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 void play(){cd.play();}
}

App类

package soundSystem;import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.ComponentScan;@ComponentScan
public class App {public static void main(String[] args){ApplicationContext context=new AnnotationConfigApplicationContext(App.class);CDPlayer player=context.getBean(CDPlayer.class);player.play();}
}

运行结果

[INFO ] 2019-10-29 18:56:54,850 method:org.springframework.context.support.AbstractApplicationContext.prepareRefresh(AbstractApplicationContext.java:583)
Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@880ec60: startup date [Tue Oct 29 18:56:54 CST 2019]; root of context hierarchy
[DEBUG] 2019-10-29 18:56:54,874 method:org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221)
Creating shared instance of singleton bean 'org.springframework.context.annotation.internalConfigurationAnnotationProcessor'
[DEBUG] 2019-10-29 18:56:54,875 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:449)
Creating instance of bean 'org.springframework.context.annotation.internalConfigurationAnnotationProcessor'
[DEBUG] 2019-10-29 18:56:54,900 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] 2019-10-29 18:56:54,904 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:485)
Finished creating instance of bean 'org.springframework.context.annotation.internalConfigurationAnnotationProcessor'
[DEBUG] 2019-10-29 18:56:54,995 method:org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221)
Creating shared instance of singleton bean 'org.springframework.context.annotation.internalAutowiredAnnotationProcessor'
[DEBUG] 2019-10-29 18:56:54,996 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:449)
Creating instance of bean 'org.springframework.context.annotation.internalAutowiredAnnotationProcessor'
[DEBUG] 2019-10-29 18:56:54,997 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] 2019-10-29 18:56:55,030 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:485)
Finished creating instance of bean 'org.springframework.context.annotation.internalAutowiredAnnotationProcessor'
[DEBUG] 2019-10-29 18:56:55,030 method:org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221)
Creating shared instance of singleton bean 'org.springframework.context.annotation.internalRequiredAnnotationProcessor'
[DEBUG] 2019-10-29 18:56:55,031 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:449)
Creating instance of bean 'org.springframework.context.annotation.internalRequiredAnnotationProcessor'
[DEBUG] 2019-10-29 18:56:55,032 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] 2019-10-29 18:56:55,040 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:485)
Finished creating instance of bean 'org.springframework.context.annotation.internalRequiredAnnotationProcessor'
[DEBUG] 2019-10-29 18:56:55,046 method:org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:730)
Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@166fa74d: 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,app,CDPlayer,compactDisc]; root of factory hierarchy
[DEBUG] 2019-10-29 18:56:55,047 method:org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:251)
Returning cached instance of singleton bean 'org.springframework.context.annotation.internalConfigurationAnnotationProcessor'
[DEBUG] 2019-10-29 18:56:55,047 method:org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:251)
Returning cached instance of singleton bean 'org.springframework.context.annotation.internalAutowiredAnnotationProcessor'
[DEBUG] 2019-10-29 18:56:55,050 method:org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:251)
Returning cached instance of singleton bean 'org.springframework.context.annotation.internalRequiredAnnotationProcessor'
[DEBUG] 2019-10-29 18:56:55,050 method:org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221)
Creating shared instance of singleton bean 'org.springframework.context.event.internalEventListenerProcessor'
[DEBUG] 2019-10-29 18:56:55,051 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:449)
Creating instance of bean 'org.springframework.context.event.internalEventListenerProcessor'
[DEBUG] 2019-10-29 18:56:55,059 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] 2019-10-29 18:56:55,063 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:485)
Finished creating instance of bean 'org.springframework.context.event.internalEventListenerProcessor'
[DEBUG] 2019-10-29 18:56:55,064 method:org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221)
Creating shared instance of singleton bean 'org.springframework.context.event.internalEventListenerFactory'
[DEBUG] 2019-10-29 18:56:55,064 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:449)
Creating instance of bean 'org.springframework.context.event.internalEventListenerFactory'
[DEBUG] 2019-10-29 18:56:55,065 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] 2019-10-29 18:56:55,070 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:485)
Finished creating instance of bean 'org.springframework.context.event.internalEventListenerFactory'
[DEBUG] 2019-10-29 18:56:55,072 method:org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221)
Creating shared instance of singleton bean 'app'
[DEBUG] 2019-10-29 18:56:55,072 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:449)
Creating instance of bean 'app'
[DEBUG] 2019-10-29 18:56:55,073 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
Eagerly caching bean 'app' to allow for resolving potential circular references
[DEBUG] 2019-10-29 18:56:55,076 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:485)
Finished creating instance of bean 'app'
[DEBUG] 2019-10-29 18:56:55,076 method:org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221)
Creating shared instance of singleton bean 'CDPlayer'
[DEBUG] 2019-10-29 18:56:55,077 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:449)
Creating instance of bean 'CDPlayer'
[DEBUG] 2019-10-29 18:56:55,120 method:org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221)
Creating shared instance of singleton bean 'compactDisc'
[DEBUG] 2019-10-29 18:56:55,121 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:449)
Creating instance of bean 'compactDisc'
compactdisc无参构造方法
[DEBUG] 2019-10-29 18:56:55,123 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
Eagerly caching bean 'compactDisc' to allow for resolving potential circular references
[DEBUG] 2019-10-29 18:56:55,126 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:485)
Finished creating instance of bean 'compactDisc'
[DEBUG] 2019-10-29 18:56:55,127 method:org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:757)
Autowiring by type from bean name 'CDPlayer' via constructor to bean named 'compactDisc'
CDPlayer有参构造方法
[DEBUG] 2019-10-29 18:56:55,129 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
Eagerly caching bean 'CDPlayer' to allow for resolving potential circular references
[DEBUG] 2019-10-29 18:56:55,131 method:org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:485)
Finished creating instance of bean 'CDPlayer'
[DEBUG] 2019-10-29 18:56:55,131 method:org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:251)
Returning cached instance of singleton bean 'compactDisc'
[DEBUG] 2019-10-29 18:56:55,132 method:org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:251)
Returning cached instance of singleton bean 'org.springframework.context.event.internalEventListenerFactory'
[DEBUG] 2019-10-29 18:56:55,194 method:org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:251)
Returning cached instance of singleton bean 'lifecycleProcessor'
[DEBUG] 2019-10-29 18:56:55,199 method:org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:251)
Returning cached instance of singleton bean 'CDPlayer'
正在播放音乐....