Question

我从未使用Spring AOP并尝试配置我的第一个bean。我似乎正确配置它，但我得到一个例外，找不到bean。

我的方面是 -

@Aspect
@Component
public class IdentificationAspect {

    @Before("execution(* ru.sbt.filial.cards.aspect.SomeBean.*(..))")
    public void logBefore(JoinPoint joinPoint) throws Throwable {

        System.out.println("logBefore() is running!");
        System.out.println("hijacked : " + joinPoint.getSignature().getName());
        System.out.println("******");
    }
}

我的AOP找不到的是 -

package ru.sbt.filial.cards.aspect;

import org.springframework.stereotype.Component;

@Component
public class SomeBean {

    public void printSmth() {
       System.out.println("!!!!!!!!!!!");
    }

}

我有以下异常 -

Caused by: java.lang.IllegalArgumentException: warning no match for this type name: ru.sbt.filial.cards.aspect.SomeBean [Xlint:invalidAbsoluteTypeName]
                at org.aspectj.weaver.tools.PointcutParser.parsePointcutExpression(PointcutParser.java:301)
                at org.springframework.aop.aspectj.AspectJExpressionPointcut.buildPointcutExpression(AspectJExpressionPointcut.java:207)
                at org.springframework.aop.aspectj.AspectJExpressionPointcut.getFallbackPointcutExpression(AspectJExpressionPointcut.java:358)
                at org.springframework.aop.aspectj.AspectJExpressionPointcut.matches(AspectJExpressionPointcut.java:255)
                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:117)
                at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findEligibleAdvisors(AbstractAdvisorAutoProxyCreator.java:87)
                at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.getAdvicesAndAdvisorsForBean(AbstractAdvisorAutoProxyCreator.java:68)
                at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.wrapIfNecessary(AbstractAutoProxyCreator.java:356)
                at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessAfterInitialization(AbstractAutoProxyCreator.java:319)
                at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:412)
                at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.postProcessObjectFromFactoryBean(AbstractAutowireCapableBeanFactory.java:1629)
                at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:162)
                ... 165 more

我有以下maven依赖项 -

              <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-aop</artifactId>
                <version>3.2.0.RELEASE</version>
              </dependency>
              <dependency>
                <groupId>org.aspectj</groupId>
                <artifactId>aspectjweaver</artifactId>
                <version>1.7.3</version>
              </dependency>
              <dependency>
                <groupId>org.aspectj</groupId>
                <artifactId>aspectjrt</artifactId>
                <version>1.7.3</version>
              </dependency>

我的spring applicationContext.xml配置是 -

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<beans xmlns="http://www.springframework.org/schema/beans"
   xmlns:mvc="http://www.springframework.org/schema/mvc"
   xmlns:aop="http://www.springframework.org/schema/aop"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://www.springframework.org/schema/beans
                         http://www.springframework.org/schema/beans/spring-beans.xsd
                         http://www.springframework.org/schema/mvc
                http://www.springframework.org/schema/mvc/spring-mvc.xsd
                         http://www.springframework.org/schema/context
                http://www.springframework.org/schema/context/spring-context-3.2.xsd
                         http://www.springframework.org/schema/aop
                http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">

<mvc:annotation-driven/>
<aop:aspectj-autoproxy/>

<bean id="someBean" class="ru.sbt.filial.cards.aspect.SomeBean">
</bean>

更新我添加到我的Spring配置行

<context:component-scan base-package="ru.sbt.filial.cards.aspect"/>

但仍然是相同的消息。我还试图注释不同的方式 - 如果我没有指定bean，即写 -

@Before("execution(* ru.sbt.filial.cards.aspect.*.*(..))")

而不是

@Before("execution(* ru.sbt.filial.cards.aspect.SomeBean.*(..))")

我在加载时没有错误，但是没有调用aop方法。

我也试着像这样注释

@Before("this(ru.sbt.filial.cards.aspect.SomeBean) and execution(* printSmth(..))")

但结果相同 - 此类型名称不匹配。还有更多的想法吗？

Answer 1

我和你有同样的问题，我已经解决了我的问题。我给你两个建议，你可以尝试一下。请将方面类中的@Before注释修改为以下之一：

@Before("execution(* ru.sbt.filial.cards.aspect.SomeBean.logBefore(..))")

或

@Before("execution(* ru.sbt.filial.cards.aspect.SomeBean..*(..))")

希望它有所帮助。

Answer 2

要成功运行，请在您的spring applicationContext.xml配置文件中添加

<context:component-scan base-package="ru.sbt.filial.cards.aspect"/>

在SomeBean类中使用@Component注释

更新

尝试将方法名称添加到@Before：

@Before("execution(* ru.sbt.filial.cards.aspect.SomeBean.logBefore(..))")

Answer 3

你输了课。

@Before("execution(* ru.sbt.filial.cards.aspect.**SomeBean.***(..))")

以您的方式，“ somebean”是一个包，它后面的*是一个方法，您应该放置类它们之间。您可以这样做

@Before("execution(* ru.sbt.filial.cards.aspect.SomeBean.* .*(..))")

或

@Before("execution(* ru.sbt.filial.cards.aspect.SomeBean..*(..))")

java.lang.IllegalArgumentException：警告此类型名称不匹配：ru.sbt.filial.cards.aspect.SomeBean [Xlint：invalidAbsoluteTypeName]

3 个答案: