Spring动态代理，aop 注解实现aop

<?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/> 

</beans>

上面红色的事关于spring动态代理的aopxml配置选项，必须要填写

配置完毕后，导入jar包

就可以使用注解实现aop

代码结构

代码样例

dao层

package com.leige.dao;

import org.aspectj.lang.annotation.Aspect;

public interface PersonDao {
public void add();

}

dao层实现

package com.leige.daoimpl;

import org.springframework.stereotype.Repository;

import com.leige.dao.PersonDao;

@Repository("personDao")

public class PersonDaoImpl1 implements PersonDao{

public void add() {
// TODO Auto-generated method stub
System.out.println("leige我是add方法");

}

}

service层

package com.leige.service;

import javax.annotation.Resource;

import org.aspectj.lang.annotation.Aspect;

import org.springframework.stereotype.Service;

import com.leige.dao.PersonDao;

@Service("personService")

public class PersonService {
private PersonDao dao=null;
public PersonDao getDao() {
return dao;
}
@Resource(name="personDao")
public void setDao(PersonDao dao) {
this.dao = dao;
}

}

动态代理拦截

package com.leige.interceptor;

import org.aspectj.lang.annotation.After;

import org.aspectj.lang.annotation.Aspect;

import org.aspectj.lang.annotation.Before;

import org.aspectj.lang.annotation.Pointcut;

import org.springframework.stereotype.Repository;

@Aspect

@Repository("myInterceptor")

public class MyInterceptor {
@Pointcut("execution (* com.leige.daoimpl.PersonDaoImpl1.*(..)) ")
public void fun(){}//定义切入点
@Before("fun()")
public void before(){
System.out.println("磊哥无敌");
}
@After("fun()")
public void after(){
System.out.println("leigezuishuai");
}

}

测试类

package com.leige.junit;

import org.junit.Test;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.leige.service.PersonService;

import sun.awt.AppContext;

public class PersonTest{
@Test
public void fun(){
ApplicationContext app=new ClassPathXmlApplicationContext("beans.xml");//读取配置文件
PersonService per=(PersonService) app.getBean("personService");
per.getDao().add();
}

}

测试结果

所需jar包