<?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="beforeAdvice" class="aop.BeforeAdvice"></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="beforeAdvice"></property> <property name="patterns"> <list> <value>dao.UserDao.saveUser</value> <value>dao.UserDao.deleteUser</value> </list> </property> </bean> </beans>
applicationContext-aop.xml
1 2 3 package aop; 4 5 import java.lang.reflect.Method; 6 import org.springframework.aop.MethodBeforeAdvice; 7 8 public class BeforeAdvice implements MethodBeforeAdvice{ 9 10 @Override 11 public void before(Method arg0, Object[] arg1, Object arg2) 12 throws Throwable { 13 //arg0 method; arg1参数列表 ; arg2目标对象 14 // TODO Auto-generated method stub 15 System.out.println("before"); 16 } 17 18 19 20 21 }
BeforeAdvice.java
1 import org.springframework.context.ApplicationContext; 2 import org.springframework.context.support.ClassPathXmlApplicationContext; 3 4 import dao.UserDao; 5 6 7 public class TestAop { 8 9 public static void main(String[] args) { 10 // TODO Auto-generated method stub 11 ApplicationContext ctx=new ClassPathXmlApplicationContext("/applicationContext-aop.xml"); 12 //获取文件 13 UserDao dao=(UserDao) ctx.getBean("proxy"); 14 //得到代理 15 dao.saveUser(); 16 dao.deleteUser(); 17 dao.findUser(); 18 } 19 20 }
测试页面 testaop.java