刚开始学习Spring,练习前置通知时出了问题。
原代码如下:
这是一个实现加减乘除的
package com.atguigu.spring.aop;
import org.springframework.stereotype.Component;
@Component("arithmeticCalculator")
public class ArithmeticCalculatorImpl implements ArithmeticCalculator {
@Override
public int add(int i, int j) {
int result = i + j;
return result;
}
@Override
public int sub(int i, int j) {
int result = i - j;
return result;
}
@Override
public int mul(int i, int j) {
int result = i * j;
return result;
}
@Override
public int div(int i, int j) {
int result = i / j;
return result;
}
}
这是Aspect
@Aspect
@Component
public class LoggingAspect {
@Before("execution(public int com.atguigu.spring.aop.ArithmeticCalculator.*(int, int))")
public void beforeMethod(JoinPoint joinPoint){
String methodName = joinPoint.getSignature().getName();
Object [] args = joinPoint.getArgs();
System.out.println("The method " + methodName + " begins with " + Arrays.asList(args));
}
@After("execution(* com.atguigu.spring.aop.*.*(..))")
public void afterMethod(JoinPoint joinPoint){
String methodName = joinPoint.getSignature().getName();
System.out.println("The method " + methodName + " ends");
}
}
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:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">
<!-- 自动扫描的包 -->
<context:component-scan base-package="com.atguigu.spring.aop"></context:component-scan>
<!-- 使AspectJ -->
<aop:aspectj-autoproxy></aop:aspectj-autoproxy>
</beans>
下面是测试
public class Main {
public static void main(String[] args) {
ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext-aop.xml");
ArithmeticCalculator arithmeticCalculator = (ArithmeticCalculator) ctx.getBean("arithmeticCalculator");
System.out.println(arithmeticCalculator.getClass().getName());
int result = arithmeticCalculator.add(11, 12);
System.out.println("result:" + result);
result = arithmeticCalculator.div(21, 3);
System.out.println("result:" + result);
}
}
然后问题就来了 。 。 。 。 。。
Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'arithmeticCalculator' defined in file [D:\javaWebWorkpace\spring-2-0\build\classes\com\atguigu\spring\aop\ArithmeticCalculatorImpl.class]: Initialization of bean failed; nested exception is java.lang.NoClassDefFoundError: Could not initialize class org.aspectj.util.LangUtil
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:547)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:700)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
at com.atguigu.spring.aop.Main.main(Main.java:11)
Caused by: java.lang.NoClassDefFoundError: Could not initialize class org.aspectj.util.LangUtil
at org.aspectj.weaver.reflect.ReflectionWorld.<init>(ReflectionWorld.java:52)
at org.aspectj.weaver.tools.PointcutParser.setClassLoader(PointcutParser.java:221)
at org.aspectj.weaver.tools.PointcutParser.<init>(PointcutParser.java:207)
at org.aspectj.weaver.tools.PointcutParser.getPointcutParserSupportingSpecifiedPrimitivesAndUsingSpecifiedClassLoaderForResolution(PointcutParser.java:168)
at org.springframework.aop.aspectj.AspectJExpressionPointcut.initializePointcutParser(AspectJExpressionPointcut.java:221)
at org.springframework.aop.aspectj.AspectJExpressionPointcut.buildPointcutExpression(AspectJExpressionPointcut.java:204)
at org.springframework.aop.aspectj.AspectJExpressionPointcut.buildPointcutExpression(AspectJExpressionPointcut.java:197)
at org.springframework.aop.aspectj.AspectJExpressionPointcut.checkReadyToMatch(AspectJExpressionPointcut.java:186)
at org.springframework.aop.aspectj.AspectJExpressionPointcut.getClassFilter(AspectJExpressionPointcut.java:166)
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:372)
at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessAfterInitialization(AbstractAutoProxyCreator.java:335)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:421)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1558)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
... 11 more
实在搞不清楚哪里错了 , 我把项目发给别人运行(IDEA),运行结果不会报错。我是照着教学视频(教学用eclipse)敲的,在我这里运行(我也用eclipse) 就报错了。感觉也不是缺少什么jar包吧,那会是什么问题呢,恳求各路大神支招,帮帮小白,谢谢啦