弹簧靴中的Aop问题
我的应用程序类
import com.example.haha.Haha; import com.example.hehe.Hehe; import com.example.logging.Logging; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.context.ApplicationContext; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.EnableAspectJAutoProxy; @SpringBootApplication @EnableAspectJAutoProxy public class DemoApplication { public static void main(String[] args) throws InterruptedException { ApplicationContext ctx = SpringApplication.run(DemoApplication.class, args); for(String name:ctx.getBeanDefinitionNames()){ System.out.println(name); } Haha haha = (Haha)ctx.getBean("hh"); haha.haha1(); haha.haha2(); return; } } Haha.java
package com.example.haha; import org.springframework.stereotype.Component; /** * Created by vamsi on 4/21/16. */ @Component("hh") public class Haha { public Haha(){ } public void haha1() throws InterruptedException { System.out.println("In method haha1"); Thread.sleep(1000); } public void haha2() throws InterruptedException { System.out.println("In method haha2"); Thread.sleep(2000); } }
我的Aspect类
package com.example.logging; import org.apache.commons.logging.Log; import org.aspectj.lang.ProceedingJoinPoint; import org.aspectj.lang.annotation.Around; import org.aspectj.lang.annotation.Aspect; import org.aspectj.lang.annotation.Pointcut; import org.springframework.context.annotation.Bean; import org.springframework.stereotype.Component; /** * Created by vamsi on 4/21/16. */ @Aspect @Component public class Logging { public Logging() { } @Pointcut("execution(public * *(..))") private void allPublicMethods(){} @Around("allPublicMethods()") public Object profile(ProceedingJoinPoint pjp) throws Throwable { long start = System.currentTimeMillis(); System.out.println(pjp.getSignature() +"begins"); Object output = pjp.proceed(); System.out.println(pjp.getSignature()+"completed."); long elapsedTime = System.currentTimeMillis() - start; System.out.println("Method execution time: " + elapsedTime + " milliseconds."); return output; } }
的pom.xml
4.0.0 com.example demo 0.0.1-SNAPSHOT jar demo Demo project for Spring Boot org.springframework.boot spring-boot-starter-parent 1.3.3.RELEASE UTF-8 1.7 org.springframework.boot spring-boot-starter-aop org.springframework.boot spring-boot-starter-test test org.springframework.boot spring-boot-maven-plugin
这些是我的spring启动应用程序中的文件。 我想使用AOP在我的应用程序中登录所有公共方法。 当我运行我的应用程序时，它会出现以下错误。
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.boot.autoconfigure.AutoConfigurationPackages': Initialization of bean failed; nested exception is org.springframework.aop.framework.AopConfigException: Could not generate CGLIB subclass of class [class org.springframework.boot.autoconfigure.AutoConfigurationPackages$BasePackages]: Common causes of this problem include using a final class or a non-visible class; nested exception is java.lang.IllegalArgumentException: Cannot subclass final class org.springframework.boot.autoconfigure.AutoConfigurationPackages$BasePackages at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE] at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839) ~[spring-context-4.2.5.RELEASE.jar:4.2.5.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538) ~[spring-context-4.2.5.RELEASE.jar:4.2.5.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:766) [spring-boot-1.3.3.RELEASE.jar:1.3.3.RELEASE] at org.springframework.boot.SpringApplication.createAndRefreshContext(SpringApplication.java:361) [spring-boot-1.3.3.RELEASE.jar:1.3.3.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:307) [spring-boot-1.3.3.RELEASE.jar:1.3.3.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1191) [spring-boot-1.3.3.RELEASE.jar:1.3.3.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1180) [spring-boot-1.3.3.RELEASE.jar:1.3.3.RELEASE] at com.example.DemoApplication.main(DemoApplication.java:18) [classes/:na] Caused by: org.springframework.aop.framework.AopConfigException: Could not generate CGLIB subclass of class [class org.springframework.boot.autoconfigure.AutoConfigurationPackages$BasePackages]: Common causes of this problem include using a final class or a non-visible class; nested exception is java.lang.IllegalArgumentException: Cannot subclass final class org.springframework.boot.autoconfigure.AutoConfigurationPackages$BasePackages at org.springframework.aop.framework.CglibAopProxy.getProxy(CglibAopProxy.java:213) ~[spring-aop-4.2.5.RELEASE.jar:4.2.5.RELEASE] at org.springframework.aop.framework.ProxyFactory.getProxy(ProxyFactory.java:109) ~[spring-aop-4.2.5.RELEASE.jar:4.2.5.RELEASE] at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.createProxy(AbstractAutoProxyCreator.java:468) ~[spring-aop-4.2.5.RELEASE.jar:4.2.5.RELEASE] at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.wrapIfNecessary(AbstractAutoProxyCreator.java:349) ~[spring-aop-4.2.5.RELEASE.jar:4.2.5.RELEASE] at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessAfterInitialization(AbstractAutoProxyCreator.java:298) ~[spring-aop-4.2.5.RELEASE.jar:4.2.5.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:422) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1583) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE] ... 14 common frames omitted Caused by: java.lang.IllegalArgumentException: Cannot subclass final class org.springframework.boot.autoconfigure.AutoConfigurationPackages$BasePackages at org.springframework.cglib.proxy.Enhancer.generateClass(Enhancer.java:457) ~[spring-core-4.2.5.RELEASE.jar:4.2.5.RELEASE] at org.springframework.cglib.transform.TransformingClassGenerator.generateClass(TransformingClassGenerator.java:33) ~[spring-core-4.2.5.RELEASE.jar:4.2.5.RELEASE] at org.springframework.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25) ~[spring-core-4.2.5.RELEASE.jar:4.2.5.RELEASE] at org.springframework.aop.framework.CglibAopProxy$ClassLoaderAwareUndeclaredThrowableStrategy.generate(CglibAopProxy.java:990) ~[spring-aop-4.2.5.RELEASE.jar:4.2.5.RELEASE] at org.springframework.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:231) ~[spring-core-4.2.5.RELEASE.jar:4.2.5.RELEASE] at org.springframework.cglib.proxy.Enhancer.createHelper(Enhancer.java:378) ~[spring-core-4.2.5.RELEASE.jar:4.2.5.RELEASE] at org.springframework.cglib.proxy.Enhancer.createClass(Enhancer.java:318) ~[spring-core-4.2.5.RELEASE.jar:4.2.5.RELEASE] at org.springframework.aop.framework.ObjenesisCglibAopProxy.createProxyClassAndInstance(ObjenesisCglibAopProxy.java:55) ~[spring-aop-4.2.5.RELEASE.jar:4.2.5.RELEASE] at org.springframework.aop.framework.CglibAopProxy.getProxy(CglibAopProxy.java:203) ~[spring-aop-4.2.5.RELEASE.jar:4.2.5.RELEASE] ... 21 common frames omitted
你的切入点是如此通用：
@Pointcut("execution(public * *(..))")
这将为类路径中的每个类的所有可用公共方法提供建议，每个类都是如此！ 不幸的是，Spring AOP无法为类路径上的某些现有类创建所需的代理（因为它们没有实现任何接口并且是final ），因此错误：
无法inheritancefinal类org.springframework.boot.autoconfigure.AutoConfigurationPackages $ BasePackages
如果你限制你的切入点只是建议你的课程，你会没事的！
你的allPublicMethods切入点过于宽泛。 它被应用于每个class级的每个公共方法。 匹配的一个类是org.springframework.boot.autoconfigure.AutoConfigurationPackages$BasePackages 。 它被声明为final ，阻止建议被应用于它。
您应缩小切入点的范围，例如仅将其应用于您自己的com.example包中的代码：
@Pointcut("execution(public * com.example..*(..))")