aop编程 环绕round

 <?xml version="1.0" encoding="UTF-8"?>
 <beans xmlns="http://www.springframework.org/schema/beans"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd" default-autowire="byName">

 <!--     配置代理关系               -->
 <!-- 目标类      被代理人对象 -->
 <bean id="target" class="dao.imp.UserDaoImp"></bean>
 <!-- 切面  方面代码（通知代码）-->
 <bean id="roundAdvice" class="aop.RoundAdvice"></bean>

 <!-- 代理类   代理人对象-->
 <bean id="proxy" class="org.springframework.aop.framework.ProxyFactoryBean">

 <!-- 代理用到的接口     拦截者：指明方法代码的封装对象-->
 <property name="proxyInterfaces">
 <list>
 <value>dao.UserDao</value>
 </list>
 </property>

 <!-- 目标对象   指明被代理人-->
 <property name="target" ref="target">
 </property>

 <!-- 切面 拦截者  ：指明方面代码的封装对象 -->
 <property name="interceptorNames">
 <list>
 <!-- <value>beforeAdvice</value> -->
 <value>pointcutAndAdvice</value>
 </list>
 </property>
 </bean>
 <!-- 配置带切入点的bean
 进一步封装代码 ，提供过滤被代理方法的功能 。效果  ：被代理接口中方法集合的子集被代理执行-->
 <bean id="pointcutAndAdvice" class="org.springframework.aop.support.RegexpMethodPointcutAdvisor">
     <property name="advice" ref="roundAdvice"></property>
     <property name="patterns">
         <list>
             <value>dao.UserDao.saveUser</value>
             <value>dao.UserDao.deleteUser</value>
         </list>
     </property>
 </bean>
 </beans>

applicationContext-round.xml

package aop;

import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;

public class RoundAdvice implements MethodInterceptor{

	@Override
	public Object invoke(MethodInvocation method) throws Throwable {
		// TODO Auto-generated method stub
		System.out.println("开始");
		Object obj=method.proceed();
		System.out.println("结束");

		return null;
	}

}

RoundAdvice.java

 import org.springframework.context.ApplicationContext;
 import org.springframework.context.support.ClassPathXmlApplicationContext;

 import dao.UserDao;

 public class TestAop {

     public static void main(String[] args) {
         // TODO Auto-generated method stub
         ApplicationContext ctx=new ClassPathXmlApplicationContext("/applicationContext-aop.xml");
         //获取文件
         UserDao dao=(UserDao) ctx.getBean("proxy");
         //得到代理
         dao.saveUser();
         dao.deleteUser();
         dao.findUser();
     }

 }

test.java