该博客主要讲述了在Spring Boot应用启动过程中遇到的Bean创建异常，具体为'com.caocao.pay.framework.sentinel.aop.SentinelAspect'。异常原因指向了缺少AspectJ库的'ProceedingJoinPoint'类，导致无法 introspect 类。解决办法是在父POM中添加缺失的jar包，并在子POM中引用。这涉及到Spring Boot、依赖注入以及AOP的概念。
ERROR org.springframework.boot.SpringApplication - Application startup failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘sentinelAspect’: Lookup method resolution failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [com.caocao.pay.framework.sentinel.aop.SentinelAspect] from ClassLoader [sun.misc.Launcher
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AppClassLoader@18b4aac2] at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.determineCandidateConstructors(AutowiredAnnotationBeanPostProcessor.java:289) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineConstructorsFromBeanPostProcessors(AbstractAutowireCapableBeanFactory.java:1286) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1203) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:571) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:531) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda
AppClassLoader@18b4aac2]atorg.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.determineCandidateConstructors(AutowiredAnnotationBeanPostProcessor.java:289)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineConstructorsFromBeanPostProcessors(AbstractAutowireCapableBeanFactory.java:1286)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1203)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:571)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:531)atorg.springframework.beans.factory.support.AbstractBeanFactory.lambdadoGetBean
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0(AbstractBeanFactory.java:335) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:944) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:925) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:588) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360) at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) at com.caocao.travel.TravelServerBootstrap.main(TravelServerBootstrap.java:37) Caused by: java.lang.IllegalStateException: Failed to introspect Class [com.caocao.pay.framework.sentinel.aop.SentinelAspect] from ClassLoader [sun.misc.Launcher
0(AbstractBeanFactory.java:335)atorg.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)atorg.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)atorg.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)atorg.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:944)atorg.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:925)atorg.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:588)atorg.springframework.boot.SpringApplication.refresh(SpringApplication.java:693)atorg.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360)atorg.springframework.boot.SpringApplication.run(SpringApplication.java:303)atcom.caocao.travel.TravelServerBootstrap.main(TravelServerBootstrap.java:37)Causedby:java.lang.IllegalStateException:FailedtointrospectClass[com.caocao.pay.framework.sentinel.aop.SentinelAspect]fromClassLoader[sun.misc.LauncherAppClassLoader@18b4aac2]
at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:481)
at org.springframework.util.ReflectionUtils.doWithLocalMethods(ReflectionUtils.java:321)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.determineCandidateConstructors(AutowiredAnnotationBeanPostProcessor.java:267)
… 15 common frames omitted
Caused by: java.lang.NoClassDefFoundError: org/aspectj/lang/ProceedingJoinPoint
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2729)
at java.lang.Class.getDeclaredMethods(Class.java:2003)
at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:463)
… 17 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.aspectj.lang.ProceedingJoinPoint
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352)
at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
… 21 common frames omitted
解决方案：
父pom添加jar包
子pom添加相应引用
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