java - aspectj 注解中 execution()的问题

问题描述

问 题

错误如下

包结构如下

这是我的方法

@Before("execution(*com.wisely.highlight_spring4.ch1.aop.DemoMethodService.*(..))")
    public void before(JoinPoint joinPoint){
        MethodSignature signature=(MethodSignature)joinPoint.getSignature();
        Method method=signature.getMethod();
        System.out.println("方法规则拦截"+method.getName());
    }

这是运行的错误

Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.context.event.internalEventListenerProcessor': Initialization of bean failed; nested exception is java.lang.IllegalArgumentException: Pointcut is not well-formed: expecting 'name pattern' at character position 68
execution(*com.wisely.highlight_spring4.ch1.aop.DemoMethodService.*(..))
                                                                    ^

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)
    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:197)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:775)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:861)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:541)
    at org.springframework.context.annotation.AnnotationConfigApplicationContext.<init>(AnnotationConfigApplicationContext.java:84)
    at com.wisely.highlight_spring4.ch1.aop.Main.main(Main.java:10)
Caused by: java.lang.IllegalArgumentException: Pointcut is not well-formed: expecting 'name pattern' at character position 68
execution(*com.wisely.highlight_spring4.ch1.aop.DemoMethodService.*(..))
                                                                    ^

    at org.aspectj.weaver.tools.PointcutParser.resolvePointcutExpression(PointcutParser.java:316)
    at org.aspectj.weaver.tools.PointcutParser.parsePointcutExpression(PointcutParser.java:294)
    at org.springframework.aop.aspectj.AspectJExpressionPointcut.buildPointcutExpression(AspectJExpressionPointcut.java:207)
    at org.springframework.aop.aspectj.AspectJExpressionPointcut.checkReadyToMatch(AspectJExpressionPointcut.java:193)
    at org.springframework.aop.aspectj.AspectJExpressionPointcut.getClassFilter(AspectJExpressionPointcut.java:170)
    at org.springframework.aop.support.AopUtils.canApply(AopUtils.java:220)
    at org.springframework.aop.support.AopUtils.canApply(AopUtils.java:279)
    at org.springframework.aop.support.AopUtils.findAdvisorsThatCanApply(AopUtils.java:311)
    at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findAdvisorsThatCanApply(AbstractAdvisorAutoProxyCreator.java:118)
    at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findEligibleAdvisors(AbstractAdvisorAutoProxyCreator.java:88)
    at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.getAdvicesAndAdvisorsForBean(AbstractAdvisorAutoProxyCreator.java:69)
    at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.wrapIfNecessary(AbstractAutoProxyCreator.java:347)
    at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessAfterInitialization(AbstractAutoProxyCreator.java:299)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:422)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1583)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545)
    ... 10 more

网上查了各种资料.*(..)就是执行所有方法的意思啊，为什么这里会报错？

这个问题已被关闭，原因：解决了

解决方案

我猜问题可能是你少了一个空格

@Before("execution(* com.wisely.highlight_spring4.ch1.aop.DemoMethodService.*(..))")
public void before(JoinPoint joinPoint){
    MethodSignature signature = (MethodSignature)joinPoint.getSignature();
    Method method = signature.getMethod();
    System.out.println("方法规则拦截"+method.getName());
}

问题在这* com.wisely

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