使用注解进行实现：减少xml文件的配置。
1 建立切面类
不需要实现任何特定接口，按照需要自己定义通知。
1 package org.guangsoft.utils;
2 import java.util.Date;
3 import org.aspectj.lang.ProceedingJoinPoint;
4 import org.aspectj.lang.annotation.AfterReturning;
5 import org.aspectj.lang.annotation.AfterThrowing;
6 import org.aspectj.lang.annotation.Around;
7 import org.aspectj.lang.annotation.Aspect;
8 import org.aspectj.lang.annotation.Before;
9 import org.springframework.stereotype.Component;
10 /***
11 * 定义用户的切面类
12 * ***/
13 @Component
14 @Aspect
15 public class UsersAdvice
16 {
17 // 前置的通知
18 @Before("execution(* com.bjsxt.service.impl.*.*(..))")
19 public void before()
20 {
21 System.out.println("before-------------" + new Date());
22 }
23 // 后置通知
24 // @After("execution(* com.bjsxt.service.impl.*.*(..))")
25 @AfterReturning(pointcut = "execution(* com.bjsxt.service.impl.*.*(..))", returning = "rv")
26 public void after(Object rv)
27 {
28 System.out.println("after-------------" + new Date() + "--------------"
29 + rv);
30 }
31 /****
32 * 环绕通知
33 * **/
34 @Around("execution(* com.bjsxt.service.impl.*.*(..))")
35 public void around(ProceedingJoinPoint jp)
36 {
37 System.out.println("aroun.---------before-------------" + new Date());
38 try
39 {
40 jp.proceed();// 调用目标方法
41 }
42 catch (Throwable e)
43 {
44 e.printStackTrace();
45 } // 调用目标方法
46 System.out.println("around---------after--------------" + new Date());
47 }
48 /***
49 * 异常通知
50 * **/
51 @AfterThrowing(pointcut = "execution(* com.bjsxt.service.impl.*.*(..))", throwing = "ex")
52 public void exception(Throwable ex)
53 {
54 System.out.println("exception-------------------" + ex.getMessage());
55 }
56 }
2xml文件配置
1 <?xml version="1.0" encoding="UTF-8"?>
2 <!-- 到入xml文件的约束 -->
3 <beans
4 xmlns="http://www.springframework.org/schema/beans"
5 xmlns:context="http://www.springframework.org/schema/context"
6 xmlns:aop="http://www.springframework.org/schema/aop"
7 xmlns:p="http://www.springframework.org/schema/p"
8 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
9 xsi:schemaLocation="http://www.springframework.org/schema/beans
10 http://www.springframework.org/schema/beans/spring-beans-4.1.xsd
11 http://www.springframework.org/schema/aop
12 http://www.springframework.org/schema/aop/spring-aop-4.1.xsd
13 http://www.springframework.org/schema/context
14 http://www.springframework.org/schema/context/spring-context-4.1.xsd
15 ">
16 <!-- 开启扫描注解 -->
17 <context:component-scan
18 base-package="org.guangsoft.service.impl,org.guangsoft.utils">
19 </context:component-scan>
20 <!-- 开启切面的自动代理 -->
21 <aop:aspectj-autoproxy></aop:aspectj-autoproxy>
22 </beans>
在开发中是方式二。减少xml配置，实现灵活