sortie inattendue lors de l'écriture d'un programme aop printemps

Question

Problème

sortie inattendue lors de l'exécution d'une application simple Aop.

Tâche je l'ai fait:

1) J'ai créé une classe Camera et une classe Logger. La classe Camera a une méthode snap() et la classe Logger a une méthode takePhoto().

public class Camera { 
    public void snap(){ 
    System.out.println("SNAP"); 
    } 
} 

public class Logger { 
    public void takePhoto(){ 
    System.out.println(" About to take photo ... "); 
    } 
} 

2) J'ai configuré le pointcut, l'aspect et le conseil dans mon fichier beans.xml.

<?xml version="1.0" encoding="UTF-8"?> 
<beans xmlns="http://www.springframework.org/schema/beans" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns:aop="http://www.springframework.org/schema/aop" 
xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.1.xsd 
    http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> 


<bean id="camera" class="com.jalaj.spring.aop.Camera"></bean> 
<bean id="logger" class="com.jalaj.spring.aop.Logger"></bean> 
<aop:config> 
    <aop:pointcut 
     expression="execution(void com.jalaj.spring.aop.Camera.snap())" 
     id="camerasnap" /> 
    <aop:aspect id="logger" ref="loggeraspect"> 
     <aop:before method="takePhoto" pointcut-ref="camerasnap" /> 
    </aop:aspect> 
</aop:config> 
</beans> 

3) Test App pour charger le fichier de configuration

public static void main(String[] args) { 
    ApplicationContext context = new ClassPathXmlApplicationContext("/com/jalaj/spring/aop/beans.xml"); 
    Camera p=(Camera)context.getBean("camera"); 
    p.snap(); 
    ((AbstractApplicationContext) context).close(); 

} 

4) J'ai inclus les pots donnés dans mon fichier pom.xml

<dependencies> 
    <dependency> 
    <groupId>org.springframework</groupId> 
    <artifactId>spring-core</artifactId> 
    <version>4.1.6.RELEASE</version> 
    </dependency> 
    <dependency> 
    <groupId>junit</groupId> 
    <artifactId>junit</artifactId> 
    <version>3.8.1</version> 
    <scope>test</scope> 
    </dependency> 
    <dependency> 
    <groupId>org.springframework</groupId> 
    <artifactId>spring-beans</artifactId> 
    <version>4.1.6.RELEASE</version> 
    </dependency> 
    <dependency> 
    <groupId>org.springframework</groupId> 
    <artifactId>spring-context</artifactId> 
    <version>4.1.6.RELEASE</version> 
    </dependency> 
    <dependency> 
    <groupId>org.springframework</groupId> 
    <artifactId>spring-aspects</artifactId> 
    <version>3.2.4.RELEASE</version> 
    </dependency> 

    <dependency> 
    <groupId>org.aspectj</groupId> 
    <artifactId>aspectjrt</artifactId> 
    <version>1.7.3</version>  
    </dependency> 
    <dependency> 
    <groupId>org.aspectj</groupId> 
    <artifactId>aspectjweaver</artifactId> 
    <version>1.7.3</version> 
    </dependency> 
    <dependency> 
    <groupId>aspectj</groupId> 
    <artifactId>aspectjweaver</artifactId> 
    <version>1.5.4</version> 
    </dependency> 
    <dependency> 
    <groupId>cglib</groupId> 
    <artifactId>cglib</artifactId> 
    <version>2.2</version> 
    </dependency> 
    <dependency> 
    <groupId>org.springframework</groupId> 
    <artifactId>spring-aop</artifactId> 
    <version>4.2.4.RELEASE</version> 
    </dependency> 
</dependencies> 

Aussi, j'ai vu questions précédentes, mais je ne suis pas en mesure de trouver la bonne solution.

Quelqu'un peut-il me guider comment résoudre correctement ce problème?

Résultats escomptés

About to take photo ... 
SNAP 

sortie Montré

Exception encountered during context initialization - cancelling refresh attempt 
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'camera' defined in class path resource [com/jalaj/spring/aop/beans.xml]: BeanPostProcessor before instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.aop.aspectj.AspectJPointcutAdvisor#0': Cannot create inner bean '(inner bean)#5852765b' of type [org.springframework.aop.aspectj.AspectJMethodBeforeAdvice] while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#5852765b': Cannot create inner bean '(inner bean)#43350d11' of type [org.springframework.aop.config.MethodLocatingFactoryBean] while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#43350d11': Initialization of bean failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'loggeraspect' is defined 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:472) 
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303) 
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) 
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299) 
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) 
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755) 
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757) 
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480) 
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139) 
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83) 
at com.jalaj.spring.aop.AppTest.main(AppTest.java:9) 
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.aop.aspectj.AspectJPointcutAdvisor#0': Cannot create inner bean '(inner bean)#5852765b' of type [org.springframework.aop.aspectj.AspectJMethodBeforeAdvice] while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#5852765b': Cannot create inner bean '(inner bean)#43350d11' of type [org.springframework.aop.config.MethodLocatingFactoryBean] while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#43350d11': Initialization of bean failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'loggeraspect' is defined 
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:313) 
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:129) 
at org.springframework.beans.factory.support.ConstructorResolver.resolveConstructorArguments(ConstructorResolver.java:648) 
at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:140) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1139) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1042) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476) 
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303) 
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) 
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299) 
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) 
at org.springframework.aop.framework.autoproxy.BeanFactoryAdvisorRetrievalHelper.findAdvisorBeans(BeanFactoryAdvisorRetrievalHelper.java:92) 
at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findCandidateAdvisors(AbstractAdvisorAutoProxyCreator.java:101) 
at org.springframework.aop.aspectj.autoproxy.AspectJAwareAdvisorAutoProxyCreator.shouldSkip(AspectJAwareAdvisorAutoProxyCreator.java:103) 
at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessBeforeInstantiation(AbstractAutoProxyCreator.java:248) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInstantiation(AbstractAutowireCapableBeanFactory.java:984) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.resolveBeforeInstantiation(AbstractAutowireCapableBeanFactory.java:955) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:466) 
... 10 more 

Answer 1

ref fait référence à la id d'un haricot, il semble que ce que vous voulez est:

<aop:aspect id="loggeraspect" ref="logger"> 

au lieu de

<aop:aspect id="logger" ref="loggeraspect">