AOP日志DEMO1: 实体类: package com.etc.entity; import org.aspectj.lang.annotation.Pointcut; public class User implements IUser { public static int NORMAL = 1;//普通用户角色 public static int ADMIN = 2; //管理员角色 private int role; //所属的角色 public int getRole() { return role; } public void setRole(int role) { this.role = role; } public void login() { System.out.println("执行登录了!"); } public void reg() { System.out.println("执行注册了!"); //throw new RuntimeException("注册过程发生异常!"); } } ================================================================ 实体类需实现的接口: package com.etc.entity; //定义用户接口 public interface IUser { void login(); //登录 void reg(); //注册 } ================================================================= 通知类: package com.etc.advice; import org.aspectj.lang.ProceedingJoinPoint; //自定义通知类 public class MyAdvice { public void beforelog() { System.out.println("这是前置通知的日志!"); } public void afterlog() { System.out.println("这是后置通知的日志!"); } public void aroundlog(ProceedingJoinPoint point) throws Throwable { System.out.println("这是环绕前通知的日志!"); point.proceed();//原来代码的位置 System.out.println("这是环绕后通知的日志!"); } public void throwlog() { System.out.println("这是抛出异常后通知的日志"); } } ================================================================= 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: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-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd"> <!-- 定义1个业务类对象 --> <bean id="user" class="com.etc.entity.User"> <property name="role" value="2"></property> </bean> <!-- 定义1个通知类对象 --> <bean id="myadv" class="com.etc.advice.MyAdvice"> </bean> <aop:config> <!-- 配置切点的集合、即切线 --> <aop:pointcut expression="execution(* com.etc.entity.User.*(..))" id="mypc"/> <!-- 配置切入的方向 ,即切面--> <aop:aspect ref="myadv"> <!-- 前置通知 <aop:before method="beforelog" pointcut-ref="mypc"/> --> <!-- 后置通知 <aop:after method="afterlog" pointcut-ref="mypc"/> --> <!-- 环绕通知 <aop:around method="aroundlog" pointcut-ref="mypc"/> --> <!-- 异常通知 <aop:after-throwing method="throwlog" pointcut-ref="mypc"/> --> </aop:aspect> </aop:config> </beans> =============================================== 测试类: package com.etc.test; import org.springframework.beans.factory.BeanFactory; import org.springframework.context.support.ClassPathXmlApplicationContext; import com.etc.entity.IUser; public class Test { public static void main(String[] args) { BeanFactory fac = new ClassPathXmlApplicationContext("applicationContext.xml"); IUser u = (IUser) fac.getBean("user"); //执行业务方法 u.login(); System.out.println("====="); try { u.reg(); } catch (Exception e) { } } } ======================================================================