Spring AOP（二、注解配置实现）

来源：互联网发布：java实现支付功能编辑：程序博客网时间：2024/04/19 03:07

前一篇博文已经介绍过了通过XML文件配置实现AOP切面编程，这一篇介绍一下注解实现AOP切面编程，相对于Xml文件配置，注解方式就显得十分的简便

这是项目的结构：

首先，使用注解实现AOP要在applicationContext.xml中的beans加入下面配置

     xmlns:aop="http://www.springframework.org/schema/aop"    http://www.springframework.org/schema/aop    http://www.springframework.org/schema/aop/spring-aop-2.5.xsd"    <aop:aspectj-autoproxy/>

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?><beans      xmlns:context="http://www.springframework.org/schema/context"      xmlns="http://www.springframework.org/schema/beans"      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"      xmlns:p="http://www.springframework.org/schema/p"      xmlns:aop="http://www.springframework.org/schema/aop"    xsi:schemaLocation="http://www.springframework.org/schema/beans                           http://www.springframework.org/schema/beans/spring-beans-3.1.xsd                          http://www.springframework.org/schema/context                             http://www.springframework.org/schema/context/spring-context-2.5.xsd                        http://www.springframework.org/schema/aop                        http://www.springframework.org/schema/aop/spring-aop-2.5.xsd">                            <context:annotation-config/><context:component-scan base-package="com.pro"/><aop:aspectj-autoproxy/><bean id="studentsDaoImpl" class="com.pro.vo.StudentsDAOImpl"></bean></beans>

下面我们看一下在切面类中是如何使用AOP注解的

StudentsDAOAspectJ.java

package com.pro.proxy;import org.aspectj.lang.annotation.After;import org.aspectj.lang.annotation.Aspect;import org.aspectj.lang.annotation.Before;import org.aspectj.lang.annotation.Pointcut;import org.springframework.stereotype.Component;@Aspect@Componentpublic class StudentsDAOAspectJ {@Pointcut("execution(public void com.pro.vo.StudentsDAOImpl.*Students())")public void doFilter(){}@Before("doFilter()")public void preMethod(){System.out.println("--------执行方法之前---------");}@After("doFilter()")public void afterMethod(){System.out.println("--------执行方法之后---------");}}

test.java

package com.pro.test;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import com.pro.dao.StudentsDAO;public class Test {/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");StudentsDAO sDao = (StudentsDAO) ctx.getBean("studentsDaoImpl");sDao.saveStudents();}}

源码下载点击打开链接

0 0