AspectJ：@Around 有效，但 @Before 中断 - 可能是什么导致了问题？ [重复]

问题描述 投票：0回答：1

我正在 Spring Boot 应用程序中处理 AspectJ 方面，并且遇到了一个令我困惑的问题。具体来说，当我使用 

@Around
建议时，一切似乎都按预期进行。但是，当我切换到 
@Before
建议时，应用程序在启动过程中中断。

问题：

  • 使用 
    @Around
    时，方面将按预期发挥作用。
  • 使用
    @Before
    时，应用程序在初始化期间遇到问题。

代码片段：

@Aspect
@Component
public class LoggingAspect {

    private Logger logger = LogManager.getLogger(LoggingAspect.class.getName());

    @Before("execution(* com.aspect.AOC.Service.*.*(..))")
    public void log(ProceedingJoinPoint joinPoint) {
        String methodName = joinPoint.getSignature().getName();
        Object[] para = joinPoint.getArgs();
        System.out.println("Logging in....");
        System.out.println("Method name: " + methodName + "(" + Arrays.toString(para) + ")");
        // Commented out for simplicity
        // joinPoint.proceed();
    }
}

错误

10:51:55.862 [main] WARN org.springframework.context.annotation.AnnotationConfigApplicationContext -- Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'healthEndpointGroupsBeanPostProcessor' defined in class path resource [org/springframework/boot/actuate/autoconfigure/health/HealthEndpointConfiguration.class]: BeanPostProcessor before instantiation of bean failed
Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'healthEndpointGroupsBeanPostProcessor' defined in class path resource [org/springframework/boot/actuate/autoconfigure/health/HealthEndpointConfiguration.class]: BeanPostProcessor before instantiation of bean failed
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516)     
        at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:325)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:323)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:204)
        at org.springframework.context.support.PostProcessorRegistrationDelegate.registerBeanPostProcessors(PostProcessorRegistrationDelegate.java:277)
        at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:806)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:609)
        at org.springframework.context.annotation.AnnotationConfigApplicationContext.<init>(AnnotationConfigApplicationContext.java:93)
        at com.aspect.AOC.mainSpring.main(mainSpring.java:21)
Caused by: java.lang.IllegalArgumentException: ProceedingJoinPoint is only supported for around advice
        at org.springframework.aop.aspectj.AbstractAspectJAdvice.maybeBindProceedingJoinPoint(AbstractAspectJAdvice.java:408)
        at org.springframework.aop.aspectj.AbstractAspectJAdvice.calculateArgumentBindings(AbstractAspectJAdvice.java:382)
        at org.springframework.aop.aspectj.annotation.ReflectiveAspectJAdvisorFactory.getAdvice(ReflectiveAspectJAdvisorFactory.java:303)
        at org.springframework.aop.aspectj.annotation.InstantiationModelAwarePointcutAdvisorImpl.instantiateAdvice(InstantiationModelAwarePointcutAdvisorImpl.java:152)
        at org.springframework.aop.aspectj.annotation.InstantiationModelAwarePointcutAdvisorImpl.<init>(InstantiationModelAwarePointcutAdvisorImpl.java:116)
        at org.springframework.aop.aspectj.annotation.ReflectiveAspectJAdvisorFactory.getAdvisor(ReflectiveAspectJAdvisorFactory.java:213)
        at org.springframework.aop.aspectj.annotation.ReflectiveAspectJAdvisorFactory.getAdvisors(ReflectiveAspectJAdvisorFactory.java:144)
        at org.springframework.aop.aspectj.annotation.BeanFactoryAspectJAdvisorsBuilder.buildAspectJAdvisors(BeanFactoryAspectJAdvisorsBuilder.java:110)
        at org.springframework.aop.aspectj.annotation.AnnotationAwareAspectJAutoProxyCreator.findCandidateAdvisors(AnnotationAwareAspectJAutoProxyCreator.java:95)
        at org.springframework.aop.aspectj.autoproxy.AspectJAwareAdvisorAutoProxyCreator.shouldSkip(AspectJAwareAdvisorAutoProxyCreator.java:101)   
        at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessBeforeInstantiation(AbstractAutoProxyCreator.java:280)   
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInstantiation(AbstractAutowireCapableBeanFactory.java:1129)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.resolveBeforeInstantiation(AbstractAutowireCapableBeanFactory.java:1104)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:510)     
        ... 9 more

我的pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.2.1</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.aspect</groupId>
    <artifactId>aspect</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>aspect</name>
    <description>AOC learning</description>
    <properties>
        <java.version>17</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <!--aspect-->
        <dependency> 
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
        </dependency>
        



        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-validation</artifactId>
        </dependency>
         <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-aop</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

当使用 @Before 注释时，我预计建议将在定义方法之前运行

java spring spring-boot aop aspectj
1个回答
0
投票

ProceedingJointPoint 仅适用于@Around

所以当使用 @Before 时只需删除该参数，因为它会抛出异常

已经更新了

@Before("execution(* com.aspect.AOC.Service.*.*(..))")
public void log() {
   //remove the parameters
    System.out.println("hello");
}
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