Spring AOP测试出现异常：no declaration can be found for element 'aop:aspectj-autoproxy'

Spring AOP测试出现异常：no declaration can be found for element 'aop:aspectj-autoproxy'.

异常信息：org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException: Line 11 in XML document from class path resource [beans.xml] is invalid; nested exception is org.xml.sax.SAXParseException: cvc-complex-type.2.4.c: The matching wildcard is strict, but no declaration can be found for element 'aop:aspectj-autoproxy'.
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:404)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:342)
……

测试环境：
MyEclipse7.5
JDK1.6
JUnit4
spring-framework-2.5.6.SEC01
使用的Jar包有：spring.jar
\lib\aspect\aspectjrt.jar
\lib\aspect\aspectjweaver.jar
\lib\jakarta-commons\commons-logging.jar
\lib\j2ee\common-annotations.jar

所有的源文件文件如下：
com.yakoo5.service包下有
MyInteceptor.java
PersonService.java

com.yakoo5.service.impl包下有
PersonServiceBean.java

junit.test包下有
SpringTest.java

根目录下有beans.xml

以下是个文件源代码：

/**

 * //:MyInteceptor.java 2009-9-1 Benjamin Wu.

 */

package com.yakoo5.service;



import org.aspectj.lang.ProceedingJoinPoint;



public class MyInteceptor {

	

	public void doBefore(){

		System.out.println("前置通知");

	}

	

	public void doAfterReturning(String name){

		System.out.println("后置通知："+name);

	}



	public void doAfter(){

		System.out.println("最终通知：");

	}



	public void doAfterThrowing(){

		System.out.println("异常通知");

	}

	

	public Object doBasicProfiling(ProceedingJoinPoint pjp) throws Throwable{

		System.out.println("进入方法");

		Object result = pjp.proceed();

		System.out.println("退出方法");

		return result;

	}

}

/**

 * //:PersonService.java 2009-9-1 Benjamin Wu.

 */

package com.yakoo5.service;



public interface PersonService {



	public String getPersonName(Integer id);



	public void save(String name);



	public void update(String name, Integer id);



}

/**

 * //:PersonServiceBean.java 2009-9-1 Benjamin Wu.

 */

package com.yakoo5.service.impl;



import com.yakoo5.service.PersonService;



public class PersonServiceBean implements PersonService {

	public String getPersonName(Integer id){

		return "xxx";

	}

	

	public void save(String name){

		//throw new RuntimeException("我爱例外");

		System.out.println("我是save()方法");

	}



	public void update(String name, Integer id){

		System.out.println("我是update()方法");

	}

}

SpringTest.java

package junit.test;



import org.junit.BeforeClass;

import org.junit.Test;

import org.springframework.context.support.AbstractXmlApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;



import com.yakoo5.service.PersonService;

import com.yakoo5.service.impl.PersonServiceBean;



public class SpringTest {



	@BeforeClass

	public static void setUpBeforeClass() throws Exception {

	}



	@Test

	public void aopTest() {

		AbstractXmlApplicationContext ctx = new ClassPathXmlApplicationContext(

				"beans.xml");

		PersonService ps = (PersonServiceBean) ctx.getBean("personService");

		ps.save("hello");

	}



}

beans.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: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-2.5.xsd

           http://www.springframework.org/schema/context/spring-context-2.5.xsd

           http://www.springframework.org/schema/aop/spring-aop-2.5.xsd">



	<aop:aspectj-autoproxy/>

	

	<bean id="personService" class="com.yakoo5.service.impl.PersonServiceBean" />

	<bean id="aspetBean" class="com.yakoo5.service.MyInteceptor" />

	<aop:config>

		<aop:aspect id="asp" ref="aspetBean">

			<aop:pointcut expression="execution(* com.yakoo5.service.impl.PersonServiceBean.*(..))" id="mycut"/>

			<aop:before pointcut-ref="mycut" method="doBefore"/>

		</aop:aspect>

	</aop:config>

</beans>

麻烦各位帮忙看下到底是哪里出问题了，小弟先谢了！