在Spring中如何使用动态代理? 在Spring中如何使用动态代理?

Spring动态代理定义自定义切面 -diyNodePoint

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") === * @After("切入点") === */@Aspectpublic 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

package com.lxc.service; public interface UserService {public void query(); public void delete(); public void edit(); public void add(); }

【在Spring中如何使用动态代理?】重写接口类 - UserServiceImp

package com.lxc.service; public class UserServiceImp implements UserService{@Overridepublic void query() {System.out.println("query"); }@Overridepublic void delete() {System.out.println("delete"); }@Overridepublic void edit() {System.out.println("edit"); }@Overridepublic void add() {System.out.println("add"); }}

beans.xml中配置：

测试：

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：