package com.carry.sPRing.beans.aop;

import java.awt.List;

import java.util.Arrays;

import org.aspectj.lang.JoinPoint;

import org.aspectj.lang.annotation.After;

import org.aspectj.lang.annotation.AfterReturning;

import org.aspectj.lang.annotation.AfterThrowing;

import org.aspectj.lang.annotation.Aspect;

import org.aspectj.lang.annotation.Before;

import org.springframework.stereotype.Component;

@Component  //是個bean

@Aspect           //是個切面

public classLogging {

        /**

         * 在包 com.carry.spring.beans.aop.ArithmeticInterface接口的每一個實現類的每一個方法之前打印一句日志

         *

         * */

        @Before("execution(public intcom.carry.spring.beans.aop.ArithmeticInterface.*(..))")

        public void beforeMethod(JoinPoint joinpoint){

                StringmethodName=joinpoint.getSignature().getName();    //得到當前方法的名字 

                Object[] args=joinpoint.getArgs();                        //得到方法的參數

                System.out.println("The Method："+methodName+" begin "+Arrays.asList(args));

        }

        /**

         * 在包 com.carry.spring.beans.aop.ArithmeticInterface接口的每一個實現類的每一個方法之后打印一句日志，無論是否異常出錯

         *

         * */

        @After("execution(public intcom.carry.spring.beans.aop.ArithmeticInterface.*(..))")

        public void afterMethod(){

                System.out.println("The Method end");

        }

/**

 * 返回通知，在方法正常結束后執行的代碼，有異常不顯示

 * 可以訪問方法的返回值

 *

 * */

        @AfterReturning(value="execution(public intcom.carry.spring.beans.aop.ArithmeticInterface.*(..))",

                        returning="res")

        public void returnMethod(JoinPoint joinPoint,Objectres){

                String  mathodName=joinPoint.getSignature().getName();

                System.out.println("The Method returnMethod"+".."+mathodName+".."+res);

        }

        /**

         * 異常通知

         *

         *

         * */

                @AfterThrowing(value="execution(public intcom.carry.spring.beans.aop.ArithmeticInterface.*(..))",

                                throwing="thr")

                publicvoid returnMethod(JoinPoint joinPoint,Exception thr){

                        String  mathodName=joinPoint.getSignature().getName();

                        System.out.println("The Method returnMethod"+".."+mathodName+".."+thr);

                }

}