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