Spring-AOP（注解）

@Aspect 注解表示这是一个切面
@Around(value = "execution(* com.how2java.service.ProductService.*(..))") 表示对该类所有切面进行操作

代码

1、导入jar包
链接：https://pan.baidu.com/s/1SFsUn0LckH1YGJCgjRSIPQ 
提取码：zczq
2、写service

package com.llhc.service;

import org.springframework.stereotype.Component;

@Component("s")
public class ProductService {
     public void doSomeService(){
            System.out.println("doSomeService");
     }
}

3、切面类

package com.llhc.service;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.stereotype.Component;
@Aspect
@Component

public class LoggerAspect {
    @Around(value = "execution(* com.llhc.service.ProductService.*(..))")
      public Object log(ProceedingJoinPoint joinPoint) throws Throwable {
            System.out.println("start log:" + joinPoint.getSignature().getName());
            Object object = joinPoint.proceed();
            System.out.println("end log:" + joinPoint.getSignature().getName());
            return object;
        }
}

4、测试类

package com.llhc.controller;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.llhc.service.ProductService;
public class TestString {
    public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext(new String[] { "applicationContext.xml" });
        ProductService s = (ProductService) context.getBean("s");
        s.doSomeService();
    }
}


5、配置文件

<?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:tx="http://www.springframework.org/schema/tx"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="
   http://www.springframework.org/schema/beans
   http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
   http://www.springframework.org/schema/aop
   http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
   http://www.springframework.org/schema/tx
   http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
   http://www.springframework.org/schema/context     
   http://www.springframework.org/schema/context/spring-context-3.0.xsd">
  
     
    <context:component-scan base-package="com.llhc.service"/>
    <aop:aspectj-autoproxy/>  
  
</beans>