Spring动态代理
定义自定义切面 - diyNodePoint
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package com.lxc.diy; import org.aspectj.lang.annotation.After; import org.aspectj.lang.annotation.Aspect; import org.aspectj.lang.annotation.Before; /** * @Aspect 标注这个了是一个切面 * @Before("切入点") === <aop:before method="beforeLog" pointcut-ref="point" /> * @After("切入点") === <aop:after method="afterLog" pointcut-ref="point" /> */ @Aspect public class diyNotePoint { @Before ( "execution(* com.lxc.service.UserServiceImp.*(..))" ) public void before() { System.out.println( "前置切面" ); } @After ( "execution(* com.lxc.service.UserServiceImp.*(..))" ) public void after() { System.out.println( "后置切面" ); } } |
定义接口 - UserService
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package com.lxc.service; public interface UserService { public void query(); public void delete(); public void edit(); public void add(); } |
重写接口类 - UserServiceImp
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package com.lxc.service; public class UserServiceImp implements UserService{ @Override public void query() { System.out.println( "query" ); } @Override public void delete() { System.out.println( "delete" ); } @Override public void edit() { System.out.println( "edit" ); } @Override public void add() { System.out.println( "add" ); } } |
beans.xml中配置:
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<?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 https: //www.springframework.org/schema/beans/spring-beans.xsd http: //www.springframework.org/schema/context https: //www.springframework.org/schema/context/spring-context.xsd http: //www.springframework.org/schema/aop https: //www.springframework.org/schema/aop/spring-aop.xsd"> <!--定义bean--> <bean id= "imp" class = "com.lxc.service.UserServiceImp" /> <bean id= "diyNotePoint" class = "com.lxc.diy.diyNotePoint" /> <!--添加:注解支持--> <aop:aspectj-autoproxy /> </beans> |
测试:
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import com.lxc.service.UserService; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class Test { public static void main(String[] args) { ApplicationContext ctx = new ClassPathXmlApplicationContext( "beans.xml" ); UserService userService = ctx.getBean( "imp" , UserService. class ); userService.add(); } } |
输出如下:
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原文链接:https://blog.csdn.net/qq_42778001/article/details/118084660