org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userServiceI

基于maven开发中，做一个简单的spring AOP自动生成代理，我只是想把动态代理用AOP代替，让spring自动生成代理，不用咱们自己写。

• 使用bean创建代理：

<!-- 1. 创建实体类 -->
    <bean id="userServiceId" class="com.itt.c_factory_bean.UserServiceImpl"></bean>

    <!-- 2. 创建切面类-->
    <bean id="aspectId" class="com.itt.c_factory_bean.MyAspect"></bean>
    
	<!-- 3. 创建代理类-->
	<bean id="proxyServiceId" class="org.springframework.aop.framework.ProxyFactoryBean">
		<property name="interfaces" value="com.itt.b_factory_bean.UserService"></property>
		<property name="target" ref="userServiceId"></property>
		<property name="interceptorNames" value="myAspectId"></property>
	</bean>
           

• 然后我们用AOP创建代理类：

<!-- 3. 创建代理类-->
    <aop:config>
        <aop:pointcut expression="execution(* com.itt.c_factory_bean.*.*(..))" id="myPointcutId" ></aop:pointcut>
        <aop:advisor advice-ref="aspectId" pointcut-ref="myPointcutId"></aop:advisor>
    </aop:config>
           

• 运行之后…

org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘userServiceId’ defined in class path resource [applicationContext.xml]: BeanPostProcessor before instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘org.springframework.aop.support.DefaultBeanFactoryPointcutAdvisor#0’: Cannot resolve reference to bean ‘myPointcutId’ while setting bean property ‘pointcut’; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘myPointcutId’: 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.(ClassPathXmlApplicationContext.java:139)

at org.springframework.context.support.ClassPathXmlApplicationContext.(ClassPathXmlApplicationContext.java:83)

at sfsd.AppTest.demo1(AppTest.java:26)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)

at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)

at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)

at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)

at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)

at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)

at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)

at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)

at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)

at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)

at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)

at org.junit.runners.ParentRunner 2. e v a l u a t e ( P a r e n t R u n n e r . j a v a : 229 ) a t o r g . j u n i t . r u n n e r s . P a r e n t R u n n e r . r u n ( P a r e n t R u n n e r . j a v a : 309 ) a t o r g . j u n i t . r u n n e r . J U n i t C o r e . r u n ( J U n i t C o r e . j a v a : 160 ) a t c o m . i n t e l l i j . j u n i t 4. J U n i t 4 I d e a T e s t R u n n e r . s t a r t R u n n e r W i t h A r g s ( J U n i t 4 I d e a T e s t R u n n e r . j a v a : 68 ) a t c o m . i n t e l l i j . r t . e x e c u t i o n . j u n i t . I d e a T e s t R u n n e r 2.evaluate(ParentRunner.java:229) at org.junit.runners.ParentRunner.run(ParentRunner.java:309) at org.junit.runner.JUnitCore.run(JUnitCore.java:160) at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68) at com.intellij.rt.execution.junit.IdeaTestRunner 2.evaluate(ParentRunner.java:229)atorg.junit.runners.ParentRunner.run(ParentRunner.java:309)atorg.junit.runner.JUnitCore.run(JUnitCore.java:160)atcom.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)atcom.intellij.rt.execution.junit.IdeaTestRunnerRepeater.startRunnerWithArgs(IdeaTestRunner.java:47)

at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)

at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

• 问题的原因是：基于maven开发时，AOP必须添加它的依赖

<dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.7.1</version>
    </dependency>
           

• AspectJ是AOP的框架，在项目中建议使用AspectJ方式来开发AOP。
• 好了，再次运行，发现bug就被解决了。