spring基于 注解的 AOP 的前后置通知,异常通知,最终通知，环绕通知

package com.service;
/**
 * 账户业务层的接口
 */
public interface IAccountService {
    public void saveAccount() ;
}

package com.service.impl;
import com.service.IAccountService;
import org.springframework.stereotype.Service;
/**
 * 账户的业务层实现类
 */
@Service("accountService")
public class AccountServiceImpl implements IAccountService{
    public void saveAccount() {
        System.out.println("执行了保存");
//        int i=1/0;
    }
}

package com.utils;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.*;
import org.springframework.stereotype.Component;
@Component("logger")
@Aspect//表示当前类是一个切面类
public class Logger {
    @Pointcut("execution(* com.service.impl.*.*(..))")
    private void pt1(){}
    /**
     * 前置通知
     */
    @Before("pt1()")
    public  void beforePrintLog(){
        System.out.println("前置通知Logger类中的beforePrintLog方法开始记录日志了。。。");
    }
    /**
     * 后置通知
     */
    @AfterReturning("pt1()")
    public  void afterReturningPrintLog(){
        System.out.println("后置通知Logger类中的afterReturningPrintLog方法开始记录日志了。。。");
    }
    /**
     * 异常通知
     */
    @AfterThrowing("pt1()")
    public  void afterThrowingPrintLog(){
        System.out.println("异常通知Logger类中的afterThrowingPrintLog方法开始记录日志了。。。");
    }
    /**
     * 最终通知
     */
    @After("pt1()")
    public  void afterPrintLog(){
        System.out.println("最终通知Logger类中的afterPrintLog方法开始记录日志了。。。");
    }
    /**
     * 环绕通知
     */
//    @Around("pt1()")
    public Object aroundPringLog(ProceedingJoinPoint pjp){
        Object rtValue = null;
        try{
            Object[] args = pjp.getArgs();//得到方法执行所需的参数
            System.out.println("Logger类中的aroundPringLog方法开始记录日志了。。。前置");
            rtValue = pjp.proceed(args);//明确调用业务层方法（切入点方法）
            System.out.println("Logger类中的aroundPringLog方法开始记录日志了。。。后置");
            return rtValue;
        }catch (Throwable t){
            System.out.println("Logger类中的aroundPringLog方法开始记录日志了。。。异常");
            throw new RuntimeException(t);
        }finally {
            System.out.println("Logger类中的aroundPringLog方法开始记录日志了。。。最终");
        }
    }

<?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:aop="http://www.springframework.org/schema/aop"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd">
    <!-- 配置spring创建容器时要扫描的包-->
    <context:component-scan base-package="com"></context:component-scan>
    <!-- 配置spring开启注解AOP的支持 -->
    <aop:aspectj-autoproxy></aop:aspectj-autoproxy>
</beans>

import com.service.IAccountService;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class AOPTest {
    public static void main(String[] args) {
        //1.获取容器
        ApplicationContext ac = new ClassPathXmlApplicationContext("bean.xml");
        //2.获取对象
        IAccountService as = (IAccountService)ac.getBean("accountService");
        //3.执行方法
        as.saveAccount();
    }
}