AspectJExpressionPointcut 使用了错误的类加载器

Question

我有一个 Java EE 应用程序，由 Apache Felix 容器中的多个 OSGi 包运行组成。其中一个包负责加载 Spring 应用程序上下文。我在我的应用程序中使用 Spring AOP，但我的包中出现以下错误：

java.lang.IllegalArgumentException: warning no match for this type name: com.somepackage.SomeClass [Xlint:invalidAbsoluteTypeName]
at org.aspectj.weaver.tools.PointcutParser.parsePointcutExpression(PointcutParser.java:301)
at org.springframework.aop.aspectj.AspectJExpressionPointcut.buildPointcutExpression(AspectJExpressionPointcut.java:206)
at org.springframework.aop.aspectj.AspectJExpressionPointcut.checkReadyToMatch(AspectJExpressionPointcut.java:192)
at org.springframework.aop.aspectj.AspectJExpressionPointcut.getClassFilter(AspectJExpressionPointcut.java:169)
at org.springframework.aop.support.AopUtils.canApply(AopUtils.java:208)
at org.springframework.aop.support.AopUtils.canApply(AopUtils.java:262)
at org.springframework.aop.support.AopUtils.findAdvisorsThatCanApply(AopUtils.java:294)
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:330)
at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessAfterInitialization(AbstractAutoProxyCreator.java:293)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:422)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1573)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:540)

这个问题的原因是我方面的 pointcat 中使用的 class(com.somepackage.SomeClass) 是由 bundle ClassLoader 加载的，但是 AspectJExpressionPointcut 将默认的 ClassLoader 传递给 buildPointcutExpression() 方法：

private void checkReadyToMatch() {
    if (getExpression() == null) {
        throw new IllegalStateException("Must set property 'expression' before attempting to match");
    }
    if (this.pointcutExpression == null) {
        this.pointcutClassLoader = (this.beanFactory instanceof ConfigurableBeanFactory ?
                ((ConfigurableBeanFactory) this.beanFactory).getBeanClassLoader() :
                ClassUtils.getDefaultClassLoader());
        this.pointcutExpression = buildPointcutExpression(this.pointcutClassLoader);
    }
}

对此一无所知class (com.somepackage.SomeClass).

Answer 1

问题已通过更改线程初始化中的 ClassLoader 解决Spring应用程序上下文：

Thread.currentThread().setContextClassLoader(bundleClassLoader);

所以方法ClassUtils.getDefaultClassLoader() returns bundleClassLoader 可以加载切入点中提到的class。

AspectJExpressionPointcut 使用了错误的类加载器

AspectJExpressionPointcut uses wrong classLoader

java

osgi

aspectj

spring-aop

spring-aspects