Failed to instantiate [org.springframework.aop.aspectj.AspectJExpressionPointcut]: No default constr

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原创 最新推荐文章于 2025-01-02 20:49:23 发布 · 2.5k 阅读 · 1 ·
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本文记录了在学习 Spring In Action AOP 过程中遇到的问题及解决方法，包括缺少 aspectjweaver-1.9.4.jar 导致的 NoClassDefFoundError 错误，以及 spring aop 代理混用导致的 BeanNotOfRequiredTypeException 错误。

在学习spring in action AOP第四版书籍的时候报错：

警告: Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'knight' defined in class path resource [resources/minstrel.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)#1784306' 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)#1784306': 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 org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.aop.aspectj.AspectJExpressionPointcut]: No default constructor found; nested exception is java.lang.NoClassDefFoundError: org/aspectj/weaver/reflect/ReflectionWorld$ReflectionWorldException
Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'knight' defined in class path resource [resources/minstrel.xml]: BeanPostProcessor before instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.aop.aspectj.AspectJPointcutAdvisor#0': Cannot create inner bean '(inner bean)#1784306' of type [org.springframework.aop.aspectj.AspectJMethodBeforeAdvice] while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#1784306': Cannot resolve reference to bean 'embark' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'embark': Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.aop.aspectj.AspectJExpressionPointcut]: No default constructor found; nested exception is java.lang.NoClassDefFoundError: org/aspectj/weaver/reflect/ReflectionWorld$ReflectionWorldException
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:479)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:312)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:308)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761)
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543)
	at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
	at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
	at main.java.sia.knights.KnightMain.main(KnightMain.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)#1784306' 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)#1784306': 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 org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.aop.aspectj.AspectJExpressionPointcut]: No default constructor found; 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:145)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1201)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1103)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:312)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:308)
	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:102)
	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:1045)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.resolveBeforeInstantiation(AbstractAutowireCapableBeanFactory.java:1019)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:473)
	... 10 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#1784306': 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 org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.aop.aspectj.AspectJExpressionPointcut]: No default constructor found; 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:145)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1201)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1103)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
	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 org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.aop.aspectj.AspectJExpressionPointcut]: No default constructor found; nested exception is java.lang.NoClassDefFoundError: org/aspectj/weaver/reflect/ReflectionWorld$ReflectionWorldException
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1163)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1107)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:331)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
	at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:351)
	... 36 more
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.aop.aspectj.AspectJExpressionPointcut]: No default constructor found; nested exception is java.lang.NoClassDefFoundError: org/aspectj/weaver/reflect/ReflectionWorld$ReflectionWorldException
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:85)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1155)
	... 42 more
Caused by: java.lang.NoClassDefFoundError: org/aspectj/weaver/reflect/ReflectionWorld$ReflectionWorldException
	at java.lang.Class.getDeclaredConstructors0(Native Method)
	at java.lang.Class.privateGetDeclaredConstructors(Class.java:2671)
	at java.lang.Class.getConstructor0(Class.java:3075)
	at java.lang.Class.getDeclaredConstructor(Class.java:2178)
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:80)
	... 43 more
Caused by: java.lang.ClassNotFoundException: org.aspectj.weaver.reflect.ReflectionWorld$ReflectionWorldException
	at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	... 48 more

在网上找了下原因，发现是没用导入jar包（很奇怪，我已经是按照spring的工程用idea创建的，为什么还缺包），然后找到是缺少 aspectjweaver-1.9.4.jar这个jar包，在下面的网站下载jar包：
https://mvnrepository.com/
在这里插入图片描述下载好之后，重新导入jar包，并编译：发现还有错误

七月 19, 2019 11:07:17 下午 org.springframework.context.support.ClassPathXmlApplicationContext prepareRefresh
信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@6a30c7: startup date [Fri Jul 19 23:07:17 CST 2019]; root of context hierarchy
七月 19, 2019 11:07:17 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
信息: Loading XML bean definitions from class path resource [resources/minstrel.xml]
Exception in thread "main" org.springframework.beans.factory.BeanNotOfRequiredTypeException: Bean named 'knight' is expected to be of type 'main.java.sia.knights.BraveKnight' but was actually of type 'com.sun.proxy.$Proxy2'
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:384)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
	at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1086)
	at main.java.sia.knights.KnightMain.main(KnightMain.java:12)

继续找原因：是spring aop代理混用，在xml配置里面加上配置:
<aop:aspectj-autoproxy proxy-target-class=“true”/>
错误解决。
原文链接：代理混用解决方法

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最新发布
03-30
<think>好的，我现在需要帮助用户解决Spring框架中出现的Bean创建失败问题，特别是涉及AspectJ相关的异常，比如BeanCreationException、AspectJPointcutAdvisor、NoClassDefFoundError和ReflectionWorldException。首先，我得回忆一下用户提供的引用内容，看看有没有相关的线索。 用户提供的引用中，引用[1]提到了JedisConnectionFactory的实例化失败，原因是缺少redis/clients/util/Pool类，这可能是因为依赖未正确引入。引用[2]是关于缺少HttpServlet类，解决办法是引入对应的jar包。引用[3]展示了如何通过排除自动配置类来解决问题，引用[4]则是一个依赖引入的例子。这些引用都涉及到类路径缺失或依赖配置的问题，这可能与用户当前的问题有关联，因为用户的问题同样涉及NoClassDefFoundError。 用户的问题具体是Bean创建失败，涉及AspectJ的类找不到。首先，我应该考虑AspectJ相关的依赖是否正确引入。Spring AOP通常需要aspectjweaver和aspectjrt这两个库。如果项目中使用了AspectJ注解或切面，但没有正确添加依赖，就会导致NoClassDefFoundError，尤其是ReflectionWorldException，这通常是AspectJ内部类找不到，可能因为版本不兼容或缺少aspectjweaver。 接下来，我需要检查依赖配置。比如，Maven项目中是否包含了aspectjweaver的依赖。例如，用户引用[4]中的spring-jdbc依赖格式，可以类比添加aspectjweaver的依赖。正确的依赖应该是： ```xml <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>1.9.7</version> </dependency> ``` 另外，版本兼容性也很重要。如果Spring版本较高，而AspectJ版本过低，可能会引发问题。需要确保两者版本兼容。 然后，检查切面配置是否正确。用户可能使用了@Aspect注解，但未启用AspectJ自动代理。在Spring配置中，需要添加@EnableAspectJAutoProxy，或者在XML配置中添加<aop:aspectj-autoproxy/>。如果配置遗漏，可能导致切面无法被识别，进而引发Bean创建异常。 另外，类路径扫描的问题也需要考虑。确保包含切面的包已经被组件扫描覆盖，比如使用@ComponentScan注解或在XML中配置了正确的包路径。如果切面类未被扫描到，Spring无法创建对应的Bean，导致BeanCreationException。 此外，项目类型是否为AspectJ项目。如果使用的是编译时织入（CTW）或加载时织入（LTW），可能需要额外的配置，比如在Maven插件中配置aspectj-maven-plugin，或者添加Spring的LoadTimeWeaver。如果配置不当，同样会引起类找不到的问题。 用户提到的ReflectionWorldException，查阅文档可知，这通常是因为AspectJ的ReflectionWorld无法找到某个类，可能是目标类或切面类本身不在类路径中，或者版本冲突导致某些类无法加载。这时候需要检查相关类的存在性，以及依赖的版本是否一致。 总结可能的解决步骤： 1. 添加或更新AspectJ依赖，特别是aspectjweaver。 2. 检查并确保启用AspectJ自动代理。 3. 确认组件扫描包含切面类所在的包。 4. 验证依赖版本兼容性，避免Spring和AspectJ版本冲突。 5. 检查项目构建路径，确保所有相关jar包已正确引入，没有重复或冲突。 6. 如果使用LTW，检查相关配置如aop.xml和JVM参数。 可能还需要查看具体的异常堆栈，确定缺失的具体类，从而更精确地定位问题。例如，如果异常中提到某个特定的AspectJ内部类，可能是某个依赖项未正确添加或版本不对。 最后，根据用户提供的引用，之前的解决方案多与依赖缺失有关，因此首要步骤应该是检查AspectJ相关依赖是否正确引入，并排除版本冲突的可能性。</think>针对Spring框架中因AspectJ依赖缺失或配置错误导致的`BeanCreationException`，以下是分步解决方案： ### 1. **添加AspectJ核心依赖** AspectJ相关功能需要`aspectjweaver`和`aspectjrt`库支持。在Maven项目中添加以下依赖（版本需与Spring兼容）： ```xml <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>1.9.7</version> </dependency> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjrt</artifactId> <version>1.9.7</version> </dependency> ``` > 注意：Spring 5.x通常兼容AspectJ 1.9.x[^4] ### 2. **启用AspectJ自动代理** 在配置类中增加`@EnableAspectJAutoProxy`注解： ```java @Configuration @EnableAspectJAutoProxy public class AppConfig { } ``` 或在XML中配置： ```xml <aop:aspectj-autoproxy/> ``` ### 3. **检查组件扫描范围** 确保切面类（`@Aspect`标注的类）所在包已被`@ComponentScan`覆盖： ```java @ComponentScan(basePackages = "com.example.aop") public class Application { } ``` ### 4. **验证依赖版本兼容性** 检查Spring与AspectJ版本匹配关系： - Spring 5.x ➔ AspectJ 1.9.x - Spring 4.x ➔ AspectJ 1.8.x 若存在版本冲突，使用Maven的`dependency:tree`命令分析依赖关系。 ### 5. **加载时织入配置（LTW）** 若使用加载时织入，需添加配置： ```xml <context:load-time-weaver aspectj-weaving="on"/> ``` 并在JVM启动参数中添加： ``` -javaagent:/path/to/aspectjweaver.jar ``` ### 6. **检查构建路径配置** 确保IDE中已正确识别所有依赖： - Eclipse：右键项目 ➔ Maven ➔ Update Project - IntelliJ：Reimport All Maven Projects --- ### 典型错误示例分析 若出现`NoClassDefFoundError: org/aspectj/reflect/ReflectionWorldException`，表示： 1. `aspectjweaver.jar`未正确引入 2. 存在多个冲突的AspectJ版本 3. 项目未正确清理（尝试执行`mvn clean install`） ---
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