- 背景:学习切面,测试前置通知功能,xml配置如下
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd" > <bean id="ikAspect" class="com.jing.spring.aop.IKAspect"></bean>
<bean id="ikAspectBiz" class="com.jing.spring.aop.IKAspectBiz"></bean> <aop:config>
<aop:aspect id="ikAspectAop" ref="ikAspect">
<aop:pointcut id="ikPoint" expression="execution(* com.jing.spring.aop.IKAspectBiz.*(..))"></aop:pointcut>
<aop:before method="aspectBefore" pointcut-ref="ikPoint"></aop:before>
</aop:aspect>
</aop:config>
</beans> - 报错:org.aspectj.weaver.reflect.ReflectionWorld$ReflectionWorldException
Caused by: java.lang.NoClassDefFoundError: org/aspectj/weaver/reflect/ReflectionWorld$ReflectionWorldException
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2671)
at java.lang.Class.getConstructor0(Class.java:3075)
at java.lang.Class.getDeclaredConstructor(Class.java:2178)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:80)
... 66 more
Caused by: java.lang.ClassNotFoundException: org.aspectj.weaver.reflect.ReflectionWorld$ReflectionWorldException
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 71 more - 原因:Spring AOP 虽然有自己的AOP功能,但是它是依赖
AspectJ来实现的。使用maven搭建的项目pom.xml中,没有引入aspectjweaver包。
- 解决办法:在pom.xml中引入
aspectjweaver包。
<!-- https://mvnrepository.com/artifact/org.aspectj/aspectjweaver -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.9.2</version>
</dependency> - 测试成功
- Next
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