Попытка узнать Весна: BeanCreationException: Ошибка создания bean-компонента с именем

Question

Начал изучать «Весна в действии» и получил проблему в первой главе. я простое приложение Spring, построенный с помощью Maven:

pom.xml

<?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>org.alesto</groupId> 
    <artifactId>spring-study</artifactId> 
    <version>1.0</version> 

    <dependencies> 
     <dependency> 
      <groupId>org.mockito</groupId> 
      <artifactId>mockito-core</artifactId> 
      <version>2.0.41-beta</version> 
     </dependency> 
     <dependency> 
      <groupId>junit</groupId> 
      <artifactId>junit</artifactId> 
      <version>4.12</version> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework</groupId> 
      <artifactId>spring-context</artifactId> 
      <version>4.2.4.RELEASE</version> 
     </dependency> 
    </dependencies> 
</project> 

У меня есть контекст приложения XML, где я определяю три зерна:

<?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.xsd 
     http://www.springframework.org/schema/beans 
     http://www.springframework.org/schema/beans/spring-beans.xsd"> 

    <bean id="knight" class="main.java.alesto.knight.BraveKnight"> 
     <constructor-arg ref="quest" /> 
    </bean> 

    <bean id="quest" class="main.java.alesto.knight.SlayDragonQuest"> 
     <constructor-arg value="#{T(System).out}" /> 
    </bean> 

    <bean id="minstrel" class="main.java.alesto.knight.Minstrel"> 
     <constructor-arg value="#{T(System).out}" /> 
    </bean> 

    <aop:config> 
     <aop:aspect ref="minstrel"> 
      <aop:pointcut id="embark" 
          expression="execution(* *.embarkOnQuest(..))" /> 

      <aop:before pointcut-ref="embark" 
         method="singBeforeQuest"/> 

      <aop:after pointcut-ref="embark" 
         method="singAfterQuest"/> 
     </aop:aspect> 
    </aop:config> 
</beans> 

Как видите лет я пытался придать выписки из двух конкретных методов before и after метод, идентификатор которого равен «встать». И именно эта часть кода (АОП) вызывает BeanCreationException:

Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'knight' defined in class path resource [main/resources/spring/knight.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)#7ea9e1e2' 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)#7ea9e1e2': Cannot resolve reference to bean 'embark' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'embark': Instantiation of bean failed; nested exception is java.lang.NoClassDefFoundError: org/aspectj/weaver/reflect/ReflectionWorld$ReflectionWorldException 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:478) 
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772) 
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839) 
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538) 
    at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139) 
    at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83) 
    at main.java.alesto.knight.KnightMain.main(KnightMain.java:7) 
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.aop.aspectj.AspectJPointcutAdvisor#0': Cannot create inner bean '(inner bean)#7ea9e1e2' of type [org.springframework.aop.aspectj.AspectJMethodBeforeAdvice] while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#7ea9e1e2': Cannot resolve reference to bean 'embark' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'embark': Instantiation of bean failed; nested exception is java.lang.NoClassDefFoundError: org/aspectj/weaver/reflect/ReflectionWorld$ReflectionWorldException 
    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:1143) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1046) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) 
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) 
    at org.springframework.aop.framework.autoproxy.BeanFactoryAdvisorRetrievalHelper.findAdvisorBeans(BeanFactoryAdvisorRetrievalHelper.java:92) 
    at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findCandidateAdvisors(AbstractAdvisorAutoProxyCreator.java:101) 
    at org.springframework.aop.aspectj.autoproxy.AspectJAwareAdvisorAutoProxyCreator.shouldSkip(AspectJAwareAdvisorAutoProxyCreator.java:103) 
    at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessBeforeInstantiation(AbstractAutoProxyCreator.java:248) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInstantiation(AbstractAutowireCapableBeanFactory.java:988) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.resolveBeforeInstantiation(AbstractAutowireCapableBeanFactory.java:959) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:472) 
    ... 10 more 
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#7ea9e1e2': Cannot resolve reference to bean 'embark' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'embark': Instantiation of bean failed; nested exception is java.lang.NoClassDefFoundError: org/aspectj/weaver/reflect/ReflectionWorld$ReflectionWorldException 
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:359) 
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:108) 
    at org.springframework.beans.factory.support.ConstructorResolver.resolveConstructorArguments(ConstructorResolver.java:634) 
    at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:140) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1143) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1046) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) 
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:299) 
    ... 28 more 
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'embark': Instantiation of bean failed; nested exception is java.lang.NoClassDefFoundError: org/aspectj/weaver/reflect/ReflectionWorld$ReflectionWorldException 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1105) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1050) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:325) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) 
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:351) 
    ... 36 more 
Caused by: java.lang.NoClassDefFoundError: org/aspectj/weaver/reflect/ReflectionWorld$ReflectionWorldException 
    at java.lang.Class.getDeclaredConstructors0(Native Method) 
    at java.lang.Class.privateGetDeclaredConstructors(Class.java:2671) 
    at java.lang.Class.getConstructor0(Class.java:3075) 
    at java.lang.Class.getDeclaredConstructor(Class.java:2178) 
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:80) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1098) 
    ... 42 more 
Caused by: java.lang.ClassNotFoundException: org.aspectj.weaver.reflect.ReflectionWorld$ReflectionWorldException 
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381) 
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424) 
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) 
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357) 
    ... 48 more 

Вот beans сами: Knight, который отправляется на поиски:

package main.java.alesto.knight; 

public class BraveKnight implements Knight { 

    private Quest quest; 

    //We are going to inject a quest via Spring using CONSTRUCTOR INJECTION 
    public BraveKnight(Quest quest) { 
     this.quest = quest; 
    } 

    public void embarkOnQuest() { 
     quest.embark(); 
    } 
} 

Quest сам:

package main.java.alesto.knight; 

import java.io.PrintStream; 

public class SlayDragonQuest implements Quest { 

    private PrintStream stream; 

    //We are going to inject a quest via Spring using CONSTRUCTOR INJECTION 
    public SlayDragonQuest(PrintStream stream) { 
     this.stream = stream; 
    } 

    public void embark() { 
     stream.println("Embarking on quest to slay the dragon!"); 
    } 
} 

И менестрель, ассоциированный с конем, а кто поет песни в зависимости от действий рыцарских:

package main.java.alesto.knight; 

import java.io.PrintStream; 

public class Minstrel { 

    private PrintStream printStream; 

    public Minstrel(PrintStream printStream) { 
     this.printStream = printStream; 
    } 

    public void singBeforeQuest() { 
     printStream.println("This piece of shit is going to dieeeeee!!11"); 
    } 

    public void singAfterQuest() { 
     printStream.println("The noble hero brought the victory!"); 
    } 
} 

Почему я получаю это исключение, и как ее решить?

Answer 1

Ошибка вы получаете это:

Вызванный: java.lang.ClassNotFoundException: org.aspectj.weaver.reflect.ReflectionWorld $ ReflectionWorldException

Это означает, что приложение отсутствует требуемую библиотеку. В вашем случае, вы делаете АОП с весной (<aop:config>), поэтому вам нужно добавить Spring AOP к вашему Maven POM:

<dependency> 
    <groupId>org.springframework</groupId> 
    <artifactId>spring-aop</artifactId> 
    <version>4.2.4.RELEASE</version> 
</dependency> 

---

В качестве побочного сведению, я заметил, что вы в зависимости от Mockito и JUnit со значением по умолчанию compile. Так как те, вероятно, зависимости тесты, было бы лучше, чтобы объявить их с test объемом:

<dependency> 
    <groupId>org.mockito</groupId> 
    <artifactId>mockito-core</artifactId> 
    <version>2.0.41-beta</version> 
    <scope>test</scope> 
</dependency> 
<dependency> 
    <groupId>junit</groupId> 
    <artifactId>junit</artifactId> 
    <version>4.12</version> 
    <scope>test</scope> 
</dependency> 

Answer 2

добавить ссылку для CGLIB следующие за Gradle: компиляция группа: «CGLIB», название: «CGLIB», версия : '3.2.5' затем запустите команду gradle build в командной строке, затем запустите программу, все будет в порядке!