Spring(使用Annotation方式的AOP)

<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
           ">
           
    <context:annotation-config/>
    <!-- 扫描com.daoan下面的所有包，包括子包 -->
    <context:component-scan base-package="com.daoan"/>


    <aop:aspectj-autoproxy/>


</beans>

package com.daoan.aop;

import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.stereotype.Component;

@Aspect
@Component
public class LogIntercetor {
    //(在save()方法执行之前先执行before()方法,如果需要把该逻辑织入到某个类的某个方法上,那个对象必须是spring管理起来的)
    @Before("execution(public void com.daoan.dao.impl.UserDAOImpl.save(com.daoan.model.User))")
    public void before() {
        System.out.println("method start");
    }
}