spring2.5学习笔记（八）：配置方式实现AOP
学习笔记（七）中，总结了AOP中的基本概念，并用注解的方式实现了AOP。
下面用配置的方式实现，以同注解方式实现比较，从而深入掌握AOP编程。

代码一：接口和实现类

package cn.itcast.server;public interface IPersonService {public void save(String name);public String getPersonName(Integer id);public void update(String name,Integer id);}

package cn.itcast.server.impl;import cn.itcast.server.IPersonService;public class PersonServiceBean2 implements IPersonService {public String getPersonName(Integer id) {System.out.println("这是getPersonName方法");return "xxx";}public void save(String name) {//throw new RuntimeException("我是例外");System.out.println("这是save方法");}public void update(String name, Integer id) {System.out.println("这是update方法");}}

package cn.itcast.server;import org.aspectj.lang.ProceedingJoinPoint;public class MyInteceptor2 {public void doAccessCheck(){System.out.println("这里输出的是前置通知   ");}public void doAfterReturning(){System.out.println("这里输出的是后置通知    " );}public void doAfterReturn(){System.out.println("这里输出的是最终通知");}public void doAfterThrowing(){System.out.println("这里输出的是例外通知   ");}public Object doBasicProfiling(ProceedingJoinPoint pjp) throws Throwable{//判断用户是否具有权限System.out.println("进入方法");Object result = pjp.proceed();System.out.println("退出方法");return result;}}

<?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           http://www.springframework.org/schema/context/spring-context-2.5.xsd           http://www.springframework.org/schema/aop           http://www.springframework.org/schema/aop/spring-aop-2.5.xsd           ">    <aop:aspectj-autoproxy/><!--AOP开发（基于xml配置进行AOP开发，基于注解方式进行AOP开发）  -->    <bean id="myInteceptor2" ref="myInteceptor2"><!-- expression说明要处理的切入点（方法），下面那个意思是过滤任意返回类型的，cn.itcast.server.impl.PersonServiceBean2类中的任意参数的切入点 --><!-- <aop:pointcut id="mycut" expression="execution(* cn.itcast.server.impl.PersonServiceBean2.*(..) )"/>  --><aop:pointcut id="mycut" expression="execution(* cn.itcast.server.impl.PersonServiceBean2.*(java.lang.String,..) )"/> <!--<aop:pointcut id="mycut" expression="execution(!void cn.itcast.server.impl.PersonServiceBean2.*(..) )"/> --><aop:before pointcut-ref="mycut" method="doAccessCheck"/><aop:after-returning pointcut-ref="mycut" method="doAfterReturning"/><aop:after-throwing pointcut-ref="mycut" method="doAfterThrowing"/><aop:after pointcut-ref="mycut" method="doAfterReturn"/><aop:around pointcut-ref="mycut" method="doBasicProfiling"/></aop:aspect></aop:config></beans>

package junit.test;import org.junit.BeforeClass;import org.junit.Test;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import cn.itcast.server.IPersonService;public class SpringAOPTest {@BeforeClasspublic static void setUpBeforeClass() throws Exception {}@Test public void interceptorTest(){ApplicationContext ac = new ClassPathXmlApplicationContext("beans.xml");IPersonService ipersonService = (IPersonService) ac.getBean("personService2");ipersonService.update("xxx",2);ipersonService.save("xx");ipersonService.getPersonName(2);}}