方法1：
<?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 "
 
 default-autowire="byName" >
           
    <context:annotation-config/>
    <context:component-scan base-package="com.daoan"/>
    
    <bean id="logIntercetor" class="com.daoan.aop.LogIntercetor"></bean>
    
    <aop:config>
        <!-- pointcut，在哪些方法上面加切面邏輯 -->
 

        <aop:pointcut 
        expression="execution(public * com.daoan.service..*.add(..))" 
        id="servicePointcut"/>
        <!-- 加入聲明的切面對象 所參考的切面對象是logInterceptor -->
        <aop:aspect id="logAspect" ref="logInterceptor" >
        <!-- 在add方法執行之前，會先執行LogIntercetor下面的before()方法 -->
            <aop:before method="before" pointcut-ref="servicePointcut" />
        </aop:aspect>
    
    </aop:config>

</beans>

package com.daoan.aop;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.springframework.stereotype.Component;

//@Aspect
//@Component
public class LogIntercetor {
    
    //(在方法執行之前先執行before()方法,如果需要把該邏輯織入到某個類的某個方法上,那個對象必須是spring管理起來的)
//    @Before("execution(public * com.daoan.service..*.add(..))")
    public void before() {
        System.out.println("method before");
    }
    
    //方法正常運行完成之後
//    @Around("execution(public * com.daoan.service..*.add(..))")
    public void aroundMethod(ProceedingJoinPoint pjp) throws Throwable {
        System.out.println("method around start");
        pjp.proceed();
        System.out.println("method around end");
    }
}

方法2：

    <context:annotation-config/>
    <context:component-scan base-package="com.daoan"/>
    
    <bean id="logIntercetor" class="com.daoan.aop.LogIntercetor"></bean>
    
    <aop:config>
        <!-- 加入聲明的切面對象 所參考的切面對象是logInterceptor -->
        <aop:aspect id="logAspect" ref="logInterceptor" >
        <!-- 在add方法執行之前，會先執行LogIntercetor下面的before()方法 -->
            <aop:before method="before" pointcut="execution(public * com.daoan.service..*.add(..))" />
        </aop:aspect>
    
    </aop:config>

Spring(使用XML方式的AOP)