Error in Spring Aop

Hi







Am beginner for Spring framework. Now am leaning Spring AOP. When I use this below mentioned code







am getting error like this,

Nov 30, 2013 5:24:18 PM org.springframework.context.support.ClassPathXmlAp plicationContext prepareRefresh







INFO: Refreshing org.springframework.context.support.ClassPathXmlAp plicationContext@988707: startup date [Sat Nov 30 17:24:17 IST 2013]; root of context hierarchy







Nov 30, 2013 5:24:18 PM org.springframework.beans.factory.xml.XmlBeanDefin itionReader loadBeanDefinitions







INFO: Loading XML bean definitions from class path resource [aspectFile.xml]







Nov 30, 2013 5:24:18 PM org.springframework.beans.factory.support.DefaultL istableBeanFactory destroySingletons







INFO: Destroying singletons in org.springframework.beans.factory.support.DefaultL istableBeanFactory@b99d08: defining beans [org.springframework.aop.config.internalAutoProxyCr eator,trianle,AspectClass]; root of factory hierarchy







Exception in thread "main" org.springframework.beans.factory.BeanCreationExce ption: Error creating bean with name 'org.springframework.aop.config.internalAutoProxyC reator': Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationExcepti on: Could not instantiate bean class [org.springframework.aop.aspectj.annotation.Annotat ionAwareAspectJAutoProxyCreator]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: org/aopalliance/aop/Advice







at org.springframework.beans.factory.support.Abstract AutowireCapableBeanFactory.instantiateBean(Abstrac tAutowireCapableBeanFactory.java:1007)







at org.springframework.beans.factory.support.Abstract AutowireCapableBeanFactory.createBeanInstance(Abst ractAutowireCapableBeanFactory.java:953)







at org.springframework.beans.factory.support.Abstract AutowireCapableBeanFactory.doCreateBean(AbstractAu towireCapableBeanFactory.java:487)







at org.springframework.beans.factory.support.Abstract AutowireCapableBeanFactory.createBean(AbstractAuto wireCapableBeanFactory.java:458)







at org.springframework.beans.factory.support.Abstract BeanFactory$1.getObject(AbstractBeanFactory.java:2 95)







at org.springframework.beans.factory.support.DefaultS ingletonBeanRegistry.getSingleton(DefaultSingleton BeanRegistry.java:223)







at org.springframework.beans.factory.support.Abstract BeanFactory.doGetBean(AbstractBeanFactory.java:292 )







at org.springframework.beans.factory.support.Abstract BeanFactory.getBean(AbstractBeanFactory.java:198)







at org.springframework.context.support.AbstractApplic ationContext.registerBeanPostProcessors(AbstractAp plicationContext.java:741)







at org.springframework.context.support.AbstractApplic ationContext.refresh(AbstractApplicationContext.ja va:464)







at org.springframework.context.support.ClassPathXmlAp plicationContext.<init>(ClassPathXmlApplicationCon text.java:139)







at org.springframework.context.support.ClassPathXmlAp plicationContext.<init>(ClassPathXmlApplicationCon text.java:83)







at org.sasi.springwork.aspect.AsspectApplication.main (AsspectApplication.java:10)







Caused by: org.springframework.beans.BeanInstantiationExcepti on: Could not instantiate bean class [org.springframework.aop.aspectj.annotation.Annotat ionAwareAspectJAutoProxyCreator]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: org/aopalliance/aop/Advice







at org.springframework.beans.BeanUtils.instantiateCla ss(BeanUtils.java:163)







at org.springframework.beans.factory.support.SimpleIn stantiationStrategy.instantiate(SimpleInstantiatio nStrategy.java:87)







at org.springframework.beans.factory.support.Abstract AutowireCapableBeanFactory.instantiateBean(Abstrac tAutowireCapableBeanFactory.java:1000)







... 12 more







Caused by: java.lang.NoClassDefFoundError: org/aopalliance/aop/Advice







at java.lang.ClassLoader.defineClass1(Native Method)







at java.lang.ClassLoader.defineClass(Unknown Source)







at java.security.SecureClassLoader.defineClass(Unknow n Source)







at java.net.URLClassLoader.defineClass(Unknown Source)







at java.net.URLClassLoader.access$100(Unknown Source)







at java.net.URLClassLoader$1.run(Unknown Source)







at java.net.URLClassLoader$1.run(Unknown Source)







at java.security.AccessController.doPrivileged(Native Method)







at java.net.URLClassLoader.findClass(Unknown Source)







at java.lang.ClassLoader.loadClass(Unknown Source)







at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)







at java.lang.ClassLoader.loadClass(Unknown Source)







at java.lang.ClassLoader.defineClass1(Native Method)







at java.lang.ClassLoader.defineClass(Unknown Source)







at java.security.SecureClassLoader.defineClass(Unknow n Source)







at java.net.URLClassLoader.defineClass(Unknown Source)







at java.net.URLClassLoader.access$100(Unknown Source)







at java.net.URLClassLoader$1.run(Unknown Source)







at java.net.URLClassLoader$1.run(Unknown Source)







at java.security.AccessController.doPrivileged(Native Method)







at java.net.URLClassLoader.findClass(Unknown Source)







at java.lang.ClassLoader.loadClass(Unknown Source)







at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)







at java.lang.ClassLoader.loadClass(Unknown Source)







at java.lang.ClassLoader.defineClass1(Native Method)







at java.lang.ClassLoader.defineClass(Unknown Source)







at java.security.SecureClassLoader.defineClass(Unknow n Source)







at java.net.URLClassLoader.defineClass(Unknown Source)







at java.net.URLClassLoader.access$100(Unknown Source)







at java.net.URLClassLoader$1.run(Unknown Source)







at java.net.URLClassLoader$1.run(Unknown Source)







at java.security.AccessController.doPrivileged(Native Method)







at java.net.URLClassLoader.findClass(Unknown Source)







at java.lang.ClassLoader.loadClass(Unknown Source)







at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)







at java.lang.ClassLoader.loadClass(Unknown Source)







at org.springframework.aop.aspectj.annotation.Annotat ionAwareAspectJAutoProxyCreator.<init>(AnnotationA wareAspectJAutoProxyCreator.java:53)







at sun.reflect.NativeConstructorAccessorImpl.newInsta nce0(Native Method)







at sun.reflect.NativeConstructorAccessorImpl.newInsta nce(Unknown Source)







at sun.reflect.DelegatingConstructorAccessorImpl.newI nstance(Unknown Source)







at java.lang.reflect.Constructor.newInstance(Unknown Source)







at org.springframework.beans.BeanUtils.instantiateCla ss(BeanUtils.java:148)







... 14 more







Caused by: java.lang.ClassNotFoundException: org.aopalliance.aop.Advice







at java.net.URLClassLoader$1.run(Unknown Source)







at java.net.URLClassLoader$1.run(Unknown Source)







at java.security.AccessController.doPrivileged(Native Method)







at java.net.URLClassLoader.findClass(Unknown Source)







at java.lang.ClassLoader.loadClass(Unknown Source)







at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)







at java.lang.ClassLoader.loadClass(Unknown Source)







... 56 more

my code:







aspectFile.xml







<?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/schem...-beans-3.0.xsd







Index of /schema/context







http://www.springframework.org/schem...ontext-3.0.xsd







Index of /schema/aop







http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">

<aop:aspectj-autoproxy/>

<bean id="triangle" class="org.sasi.springwork.aspect.Triangle">







<property name="name" value="AOP "/>







</bean>

<bean name="AspectClass" class="org.sasi.springwork.aspect.AspectClass"/>







</beans>

package org.sasi.springwork.aspect;

import org.aspectj.lang.annotation.Aspect;







import org.aspectj.lang.annotation.Before;

@Aspect







public class AspectClass {

@Before("execution(public String getName())")







public void login(){







System.out.println("Safe to run");







}

Some one please help me..

Thanks in advance