1.加入JAR包。出了Spring自身的Jar包还要一些依赖的JAR包。不然会报ClassNotFound。

Student.java

package com.lubby.bean;

import org.springframework.stereotype.Component;

@Component("student")

public class Student {

	private String id;

	private String name;

	public Student() {

		super();

	}

	public Student(String id, String name) {

		super();

		this.id = id;

		this.name = name;

	}

	public void readBook() {

		System.out.println("I am reading book now.....");

	}

	public String getId() {

		return id;

	}

	public void setId(String id) {

		this.id = id;

	}

	public String getName() {

		return name;

	}

	public void setName(String name) {

		this.name = name;

	}

}

Something.java

package com.lubby.bean;

import org.springframework.stereotype.Component;

@Component("something")

public class Something {

	public void borrowBook() {

		System.out.println("Borrow the book from library......");

	}

	public void returnBook() {

		System.out.println("Return the book to library........");

	}

}

test.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:p="http://www.springframework.org/schema/p"

	xmlns:context="http://www.springframework.org/schema/context"

	xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:aop="http://www.springframework.org/schema/aop"

	default-lazy-init="true"

	xsi:schemaLocation="

    http://www.springframework.org/schema/beans

    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd

    http://www.springframework.org/schema/aop

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

    http://www.springframework.org/schema/context

    http://www.springframework.org/schema/context/spring-context-3.0.xsd

    http://www.springframework.org/schema/mvc

    http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd

    ">

	<!-- 自己主动检測并注冊为spring中的bean+启用注解 -->

	<context:component-scan base-package="com.lubby.bean"></context:component-scan>

	<aop:config>

		<aop:aspect ref="something">

			<aop:pointcut expression="execution(* com.lubby.bean.Student.readBook(..))"  --定义切点为readBook方法

				id="readBook" />

			<aop:before pointcut-ref="readBook" method="borrowBook" />---在运行readBook方法之前运行borrowBook方法

			<aop:after-returning pointcut-ref="readBook"    ----在运行readBook方法之后运行returnBook

				method="returnBook" />

		</aop:aspect>

	</aop:config>

</beans>

运行结果

Borrow the book from library......

I am reading book now.....

Return the book to library........