Spring:aspectj注解用法

下面将介绍aspectj的注解用法

业务层：

package com.fjs.Services;
import org.springframework.stereotype.Service;
@Service("userservice")
public class ServicesImpl implements Services{
    public void save() {
        System.out.println("service层调用Dao");
    }
}

切面类：

package com.fjs.Aop;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.*;
import org.springframework.stereotype.Component;

@Component//注解bean
@Aspect//声明切面类
public class MyAspect{//切面类：
    //声明公共的方法
    @Pointcut("execution(* com.fjs.Services.ServicesImpl.*(..))")
    public void myPointCut(){}

    @Before("myPointCut()")//前置通知，不需要放行；
    public void myBefore(JoinPoint joinPoint){
        System.out.println("前置通知");
        System.out.println(joinPoint.getSignature().getName());
    }
    @AfterReturning(pointcut = "myPointCut()",returning ="obj" )
    public void hou(JoinPoint joinPoint,Object obj){

        System.out.println(joinPoint.getSignature().getName());
        System.out.println("后置通知");
    }
    @Around("myPointCut()")
    public Object myAround(ProceedingJoinPoint proceedingJoinPoint) throws Throwable {
        System.out.println("环绕前：");
        Object obj=proceedingJoinPoint.proceed();
        System.out.println("环绕后");
        return obj;
    }
    @After("myPointCut()")
    public void myafter(){
        System.out.println("最终通知");
    }

 

xml配置:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="
            http://www.springframework.org/schema/beans
            http://www.springframework.org/schema/beans/spring-beans.xsd
            http://www.springframework.org/schema/context
            http://www.springframework.org/schema/context/spring-context.xsd
            http://www.springframework.org/schema/aop
            http://www.springframework.org/schema/aop/spring-aop.xsd
">
    <!--扫描注解-->
    <context:component-scan base-package="com.fjs"/>
    <!--AOP注解生效-->
    <aop:aspectj-autoproxy/>

    <aop:config proxy-target-class="true">
        <aop:aspect ref="myAspect"></aop:aspect>
    </aop:config>

</beans>

测试：