在前置通知和后置通知的基础上加上返回通知&异常通知&环绕通知

代码：

package com.cn.spring.aop.impl;//加减乘除的接口类public interface ArithmeticCalculator {    int add(int i, int j);    int sub(int i, int j);    int mul(int i, int j);    int div(int i, int j);}

package com.cn.spring.aop.impl;import org.springframework.stereotype.Component;//实现类@Componentpublic class ArithmeticCalculatorImpl implements ArithmeticCalculator {    @Override    public int add(int i, int j) {        int result = i + j;        return result;    }    @Override    public int sub(int i, int j) {        int result = i - j;        return result;    }    @Override    public int mul(int i, int j) {        int result = i * j;        return result;    }    @Override    public int div(int i, int j) {        int result = i / j;        return result;    }}

package com.cn.spring.aop.impl;import org.aspectj.lang.JoinPoint;import org.aspectj.lang.ProceedingJoinPoint;import org.aspectj.lang.annotation.*;import org.springframework.stereotype.Component;import java.util.Arrays;import java.util.List;//把这个类声明为一个切面：首先需要把该类放入到IOC容器中，在声明为一个切面@Aspect@Componentpublic class LoggingAspect {    //声明该方法是一个前置通知：在目标方法开始之前执行    @Before("execution(public int ArithmeticCalculator.*(int, int))")    public void beforeMethod(JoinPoint joinPoint) {        String methodName = joinPoint.getSignature().getName();        List

package com.cn.spring.aop.impl;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;public class Main {    public static void main(String[] args) {        //1.创建Spring的IOC容器        ApplicationContext ctx = new ClassPathXmlApplicationContext("17-1.xml");        //2.从IOC容器中huo获取bean的实例        ArithmeticCalculator arithmeticCalculator = ctx.getBean(ArithmeticCalculator.class);        //3.使用bean        int result = arithmeticCalculator.add(3, 6);        System.out.println("result:" + result);        //result = arithmeticCalculator.div(3, 0);       // System.out.println("result:" + result);    }}