第一节：AOP 简介

AOP 简介：百度百科；

面向切面编程(也叫面向方面编程)：Aspect Oriented Programming(AOP)，是软件开发中的一个热点，也是Spring框架中的一个重要内容。利用AOP 可以对业务逻辑的各个部分进行隔离，从而使得业务逻辑各部分之间的耦合度降低，提高程序的可重用性，同时提高了开发的效率。

主要的功能是：日志记录，性能统计，安全控制，事务处理，异常处理等等。

--------

这里我先开头讲一个例子代码程序：

T.java：

 package com.wishwzp.test;

 import org.junit.Before;

 import org.junit.Test;

 import org.springframework.context.ApplicationContext;

 import org.springframework.context.support.ClassPathXmlApplicationContext;

 import com.wishwzp.service.StudentService;

 public class T {

     private ApplicationContext ac;

     @Before

     public void setUp() throws Exception {

         ac=new ClassPathXmlApplicationContext("beans.xml");

     }

     @Test

     public void test1() {

         StudentService studentService=(StudentService)ac.getBean("studentService");

         studentService.addStudent("张三");

     }

 }

beans.xml:

 <?xml version="1.0" encoding="UTF-8"?>

 <beans xmlns="http://www.springframework.org/schema/beans"

     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

     xsi:schemaLocation="http://www.springframework.org/schema/beans

         http://www.springframework.org/schema/beans/spring-beans.xsd">

     <bean id="studentService" class="com.wishwzp.service.impl.StudentServiceImpl"></bean>

 </beans>

StudentServiceImpl.java:

 package com.wishwzp.service.impl;

 import com.wishwzp.service.StudentService;

 public class StudentServiceImpl implements StudentService{

     @Override

     public void addStudent(String name) {

         System.out.println("开始添加学生"+name);

         System.out.println("添加学生"+name);

         System.out.println("完成学生"+name+"的添加");

     }

 }

StudentService.java:

 package com.wishwzp.service;

 public interface StudentService {

     public void addStudent(String name);

 }

运行结果显示：

开始添加学生张三
添加学生张三
完成学生张三的添加

--------------

第二节：Spring AOP 实例

1，前置通知；

2，后置通知；

3，环绕通知；

4，返回通知；

5，异常通知；

1，前置通知；

T.java:

 package com.wishwzp.test;

 import org.springframework.context.ApplicationContext;

 import org.springframework.context.support.ClassPathXmlApplicationContext;

 import com.wishwzp.service.StudentService;

 public class T {

     public static void main(String[] args) {

         ApplicationContext ac=new ClassPathXmlApplicationContext("beans.xml");

         StudentService studentService=(StudentService)ac.getBean("studentService");

         studentService.addStudent("张三");

     }

 }

beans.xml:

 <?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"

     xsi:schemaLocation="http://www.springframework.org/schema/beans

         http://www.springframework.org/schema/beans/spring-beans.xsd

         http://www.springframework.org/schema/aop

         http://www.springframework.org/schema/aop/spring-aop.xsd">

     <!-- 注入bean，StudentServiceAspect -->

     <bean id="studentServiceAspect" class="com.wishwzp.advice.StudentServiceAspect"></bean>

     <!-- 注入bean，StudentServiceImpl -->

     <bean id="studentService" class="com.wishwzp.service.impl.StudentServiceImpl"></bean>

     <!-- 配置AOP -->

     <aop:config>

         <aop:aspect id="studentServiceAspect" ref="studentServiceAspect">

             <aop:pointcut expression="execution(* com.wishwzp.service.*.*(..))" id="businessService"/>

             <aop:before method="doBefore" pointcut-ref="businessService"/>

         </aop:aspect>

     </aop:config>

 </beans>

StudentServiceAspect.java:

 package com.wishwzp.advice;

 import org.aspectj.lang.JoinPoint;

 import org.aspectj.lang.ProceedingJoinPoint;

 public class StudentServiceAspect {

     public void doBefore(JoinPoint jp){

         System.out.println("类名:"+jp.getTarget().getClass().getName());

         System.out.println("方法名："+jp.getSignature().getName());

         System.out.println("开始添加学生："+jp.getArgs()[0]);

     }

 }

StudentServiceImpl.java:

 package com.wishwzp.service.impl;

 import com.wishwzp.service.StudentService;

 public class StudentServiceImpl implements StudentService{

     @Override

     public void addStudent(String name) {

         // System.out.println("开始添加学生"+name);

         System.out.println("添加学生"+name);

         // System.out.println("完成学生"+name+"的添加");

     }

 }

StudentService.java:

 package com.wishwzp.service;

 public interface StudentService {

     public void addStudent(String name);

 }

运行结果显示：

类名:com.wishwzp.service.impl.StudentServiceImpl
方法名：addStudent
开始添加学生：张三
添加学生张三

2，后置通知；

T.java:

 package com.wishwzp.test;

 import org.springframework.context.ApplicationContext;

 import org.springframework.context.support.ClassPathXmlApplicationContext;

 import com.wishwzp.service.StudentService;

 public class T {

     public static void main(String[] args) {

         ApplicationContext ac=new ClassPathXmlApplicationContext("beans.xml");

         StudentService studentService=(StudentService)ac.getBean("studentService");

         studentService.addStudent("张三");

     }

 }

beans.xml:

 <?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"

     xsi:schemaLocation="http://www.springframework.org/schema/beans

         http://www.springframework.org/schema/beans/spring-beans.xsd

         http://www.springframework.org/schema/aop

         http://www.springframework.org/schema/aop/spring-aop.xsd">

     <!-- 注入bean，StudentServiceAspect -->

     <bean id="studentServiceAspect" class="com.wishwzp.advice.StudentServiceAspect"></bean>

     <!-- 注入bean，StudentServiceImpl -->

     <bean id="studentService" class="com.wishwzp.service.impl.StudentServiceImpl"></bean>

     <!-- 配置AOP -->

     <aop:config>

         <aop:aspect id="studentServiceAspect" ref="studentServiceAspect">

             <!-- 配置执行切点路径和id -->

             <aop:pointcut expression="execution(* com.wishwzp.service.*.*(..))" id="businessService"/>

             <!-- 前置通知 -->

             <aop:before method="doBefore" pointcut-ref="businessService"/>

             <!-- 后置通知 -->

             <aop:after method="doAfter" pointcut-ref="businessService"/>

         </aop:aspect>

     </aop:config>

 </beans>

StudentServiceAspect.java:

 package com.wishwzp.advice;

 import org.aspectj.lang.JoinPoint;

 import org.aspectj.lang.ProceedingJoinPoint;

 public class StudentServiceAspect {

     //前置通知

     public void doBefore(JoinPoint jp){

         System.out.println("类名:"+jp.getTarget().getClass().getName());

         System.out.println("方法名："+jp.getSignature().getName());

         System.out.println("开始添加学生："+jp.getArgs()[0]);

     }

     //后置通知

     public void doAfter(JoinPoint jp){

         System.out.println("类名:"+jp.getTarget().getClass().getName());

         System.out.println("方法名："+jp.getSignature().getName());

         System.out.println("学生添加完成："+jp.getArgs()[0]);

     }

 }

StudentServiceImpl.java:

 package com.wishwzp.service.impl;

 import com.wishwzp.service.StudentService;

 public class StudentServiceImpl implements StudentService{

     @Override

     public void addStudent(String name) {

         // System.out.println("开始添加学生"+name);

         System.out.println("添加学生"+name);

         // System.out.println("完成学生"+name+"的添加");

     }

 }

StudentService.java:

 package com.wishwzp.service;

 public interface StudentService {

     public void addStudent(String name);

 }

运行结果显示：

类名:com.wishwzp.service.impl.StudentServiceImpl
方法名：addStudent
开始添加学生：张三
添加学生张三
类名:com.wishwzp.service.impl.StudentServiceImpl
方法名：addStudent
学生添加完成：张三

3，环绕通知；

T.java:

 package com.wishwzp.test;

 import org.springframework.context.ApplicationContext;

 import org.springframework.context.support.ClassPathXmlApplicationContext;

 import com.wishwzp.service.StudentService;

 public class T {

     public static void main(String[] args) {

         ApplicationContext ac=new ClassPathXmlApplicationContext("beans.xml");

         StudentService studentService=(StudentService)ac.getBean("studentService");

         studentService.addStudent("张三");

     }

 }

beans.xml:

 <?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"

     xsi:schemaLocation="http://www.springframework.org/schema/beans

         http://www.springframework.org/schema/beans/spring-beans.xsd

         http://www.springframework.org/schema/aop

         http://www.springframework.org/schema/aop/spring-aop.xsd">

     <!-- 注入bean，StudentServiceAspect -->

     <bean id="studentServiceAspect" class="com.wishwzp.advice.StudentServiceAspect"></bean>

     <!-- 注入bean，StudentServiceImpl -->

     <bean id="studentService" class="com.wishwzp.service.impl.StudentServiceImpl"></bean>

     <!-- 配置AOP -->

     <aop:config>

         <aop:aspect id="studentServiceAspect" ref="studentServiceAspect">

             <!-- 配置执行切点路径和id -->

             <aop:pointcut expression="execution(* com.wishwzp.service.*.*(..))" id="businessService"/>

             <!-- 前置通知 -->

             <aop:before method="doBefore" pointcut-ref="businessService"/>

             <!-- 后置通知 -->

             <aop:after method="doAfter" pointcut-ref="businessService"/>

             <!-- 环绕通知 -->

             <aop:around method="doAround" pointcut-ref="businessService"/>

         </aop:aspect>

     </aop:config>

 </beans>

StudentServiceAspect.java:

 package com.wishwzp.advice;

 import org.aspectj.lang.JoinPoint;

 import org.aspectj.lang.ProceedingJoinPoint;

 public class StudentServiceAspect {

     //前置通知

     public void doBefore(JoinPoint jp){

         System.out.println("类名:"+jp.getTarget().getClass().getName());

         System.out.println("方法名："+jp.getSignature().getName());

         System.out.println("开始添加学生："+jp.getArgs()[0]);

     }

     //后置通知

     public void doAfter(JoinPoint jp){

         System.out.println("类名:"+jp.getTarget().getClass().getName());

         System.out.println("方法名："+jp.getSignature().getName());

         System.out.println("学生添加完成："+jp.getArgs()[0]);

     }

     //环绕通知,这里添加了返回值

     public Object doAround(ProceedingJoinPoint pjp) throws Throwable{

         System.out.println("添加学生前");

         Object retVal=pjp.proceed();

         System.out.println(retVal);

         System.out.println("添加学生后");

         return retVal;

     }

 }

StudentServiceImpl.java:

 package com.wishwzp.service.impl;

 import com.wishwzp.service.StudentService;

 public class StudentServiceImpl implements StudentService{

     @Override

     public String addStudent(String name) {

         // System.out.println("开始添加学生"+name);

         System.out.println("添加学生"+name);

         // System.out.println("完成学生"+name+"的添加");

         return name;

     }

 }

StudentService.java:

 package com.wishwzp.service;

 public interface StudentService {

     public String addStudent(String name);

 }

运行结果显示：

类名:com.wishwzp.service.impl.StudentServiceImpl
方法名：addStudent
开始添加学生：张三
添加学生前
添加学生张三
张三
添加学生后
类名:com.wishwzp.service.impl.StudentServiceImpl
方法名：addStudent
学生添加完成：张三

4，返回通知；

T.java:

 package com.wishwzp.test;

 import org.springframework.context.ApplicationContext;

 import org.springframework.context.support.ClassPathXmlApplicationContext;

 import com.wishwzp.service.StudentService;

 public class T {

     public static void main(String[] args) {

         ApplicationContext ac=new ClassPathXmlApplicationContext("beans.xml");

         StudentService studentService=(StudentService)ac.getBean("studentService");

         studentService.addStudent("张三");

     }

 }

beans.xml:

 <?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"

     xsi:schemaLocation="http://www.springframework.org/schema/beans

         http://www.springframework.org/schema/beans/spring-beans.xsd

         http://www.springframework.org/schema/aop

         http://www.springframework.org/schema/aop/spring-aop.xsd">

     <!-- 注入bean，StudentServiceAspect -->

     <bean id="studentServiceAspect" class="com.wishwzp.advice.StudentServiceAspect"></bean>

     <!-- 注入bean，StudentServiceImpl -->

     <bean id="studentService" class="com.wishwzp.service.impl.StudentServiceImpl"></bean>

     <!-- 配置AOP -->

     <aop:config>

         <aop:aspect id="studentServiceAspect" ref="studentServiceAspect">

             <!-- 配置执行切点路径和id -->

             <aop:pointcut expression="execution(* com.wishwzp.service.*.*(..))" id="businessService"/>

             <!-- 前置通知 -->

             <aop:before method="doBefore" pointcut-ref="businessService"/>

             <!-- 后置通知 -->

             <aop:after method="doAfter" pointcut-ref="businessService"/>

             <!-- 环绕通知 -->

             <aop:around method="doAround" pointcut-ref="businessService"/>

             <!-- 返回通知 -->

             <aop:after-returning method="doAfterReturning" pointcut-ref="businessService"/>

         </aop:aspect>

     </aop:config>

 </beans>

StudentServiceAspect.java:

 package com.wishwzp.advice;

 import org.aspectj.lang.JoinPoint;

 import org.aspectj.lang.ProceedingJoinPoint;

 public class StudentServiceAspect {

     //前置通知

     public void doBefore(JoinPoint jp){

         System.out.println("类名:"+jp.getTarget().getClass().getName());

         System.out.println("方法名："+jp.getSignature().getName());

         System.out.println("开始添加学生："+jp.getArgs()[0]);

     }

     //后置通知

     public void doAfter(JoinPoint jp){

         System.out.println("类名:"+jp.getTarget().getClass().getName());

         System.out.println("方法名："+jp.getSignature().getName());

         System.out.println("学生添加完成："+jp.getArgs()[0]);

     }

     //环绕通知,这里添加了返回值

     public Object doAround(ProceedingJoinPoint pjp) throws Throwable{

         System.out.println("添加学生前");

         Object retVal=pjp.proceed();

         System.out.println(retVal);

         System.out.println("添加学生后");

         return retVal;

     }

     //返回通知

     public void doAfterReturning(JoinPoint jp){

         System.out.println("返回通知");

     }

 }

StudentServiceImpl.java:

 package com.wishwzp.service.impl;

 import com.wishwzp.service.StudentService;

 public class StudentServiceImpl implements StudentService{

     @Override

     public String addStudent(String name) {

         // System.out.println("开始添加学生"+name);

         System.out.println("添加学生"+name);

         // System.out.println("完成学生"+name+"的添加");

         return name;

     }

 }

StudentService.java:

 package com.wishwzp.service;

 public interface StudentService {

     public String addStudent(String name);

 }

运行结果显示：

类名:com.wishwzp.service.impl.StudentServiceImpl
方法名：addStudent
开始添加学生：张三
添加学生前
添加学生张三
返回通知
张三
添加学生后
类名:com.wishwzp.service.impl.StudentServiceImpl
方法名：addStudent
学生添加完成：张三

5，异常通知；

T.java:

 package com.wishwzp.test;

 import org.springframework.context.ApplicationContext;

 import org.springframework.context.support.ClassPathXmlApplicationContext;

 import com.wishwzp.service.StudentService;

 public class T {

     public static void main(String[] args) {

         ApplicationContext ac=new ClassPathXmlApplicationContext("beans.xml");

         StudentService studentService=(StudentService)ac.getBean("studentService");

         studentService.addStudent("张三");

     }

 }

beans.xml:

 <?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"

     xsi:schemaLocation="http://www.springframework.org/schema/beans

         http://www.springframework.org/schema/beans/spring-beans.xsd

         http://www.springframework.org/schema/aop

         http://www.springframework.org/schema/aop/spring-aop.xsd">

     <!-- 注入bean，StudentServiceAspect -->

     <bean id="studentServiceAspect" class="com.wishwzp.advice.StudentServiceAspect"></bean>

     <!-- 注入bean，StudentServiceImpl -->

     <bean id="studentService" class="com.wishwzp.service.impl.StudentServiceImpl"></bean>

     <!-- 配置AOP -->

     <aop:config>

         <aop:aspect id="studentServiceAspect" ref="studentServiceAspect">

             <!-- 配置执行切点路径和id -->

             <aop:pointcut expression="execution(* com.wishwzp.service.*.*(..))" id="businessService"/>

             <!-- 前置通知 -->

             <aop:before method="doBefore" pointcut-ref="businessService"/>

             <!-- 后置通知 -->

             <aop:after method="doAfter" pointcut-ref="businessService"/>

             <!-- 环绕通知 -->

             <aop:around method="doAround" pointcut-ref="businessService"/>

             <!-- 返回通知 -->

             <aop:after-returning method="doAfterReturning" pointcut-ref="businessService"/>

             <!-- 异常通知 -->

             <aop:after-throwing method="doAfterThrowing" pointcut-ref="businessService" throwing="ex"/>

         </aop:aspect>

     </aop:config>

 </beans>

StudentServiceAspect.java:

 package com.wishwzp.advice;

 import org.aspectj.lang.JoinPoint;

 import org.aspectj.lang.ProceedingJoinPoint;

 public class StudentServiceAspect {

     //前置通知

     public void doBefore(JoinPoint jp){

         System.out.println("类名:"+jp.getTarget().getClass().getName());

         System.out.println("方法名："+jp.getSignature().getName());

         System.out.println("开始添加学生："+jp.getArgs()[0]);

     }

     //后置通知

     public void doAfter(JoinPoint jp){

         System.out.println("类名:"+jp.getTarget().getClass().getName());

         System.out.println("方法名："+jp.getSignature().getName());

         System.out.println("学生添加完成："+jp.getArgs()[0]);

     }

     //环绕通知,这里添加了返回值

     public Object doAround(ProceedingJoinPoint pjp) throws Throwable{

         System.out.println("添加学生前");

         Object retVal=pjp.proceed();

         System.out.println(retVal);

         System.out.println("添加学生后");

         return retVal;

     }

     //返回通知

     public void doAfterReturning(JoinPoint jp){

         System.out.println("返回通知");

     }

     //异常通知

     public void doAfterThrowing(JoinPoint jp,Throwable ex){

         System.out.println("异常通知");

         System.out.println("异常信息："+ex.getMessage());

     }

 }

StudentServiceImpl.java:

 package com.wishwzp.service.impl;

 import com.wishwzp.service.StudentService;

 public class StudentServiceImpl implements StudentService{

     @Override

     public String addStudent(String name) {

         // System.out.println("开始添加学生"+name);

         System.out.println("添加学生"+name);

         System.out.println(1/0);

         // System.out.println("完成学生"+name+"的添加");

         return name;

     }

 }

StudentService.java:

 package com.wishwzp.service;

 public interface StudentService {

     public String addStudent(String name);

 }

运行结果显示：

（三）Spring 之AOP 详解的更多相关文章

  1. 深入浅出学习Spring框架（三）：AOP 详解

    AOP的英文解释——AOPAspect Oriented Programming面向切面编程.主要目的是通过预编译方式和运行期动态代理实现在不修改源代码的情况下给程序动态统一添加功能的一种技术. 在反 ...

  2. Spring之AOP详解

    文章大纲 一.AOP介绍二.Spring的AOP实战三.AOP常用标签四.项目源码及参考资料下载五.参考文章   一.AOP介绍 1. 什么是AOP 在软件业,AOP为Aspect Oriented ...

  3. 3、Spring的AOP详解和案例

    AOP(Aspect Oriented Programming),即面向切面编程. 1.OOP回顾 在介绍AOP之前先来回顾一下大家都比较熟悉的OOP(Object Oriented Programm ...

  4. Spring、AOP详解

    如何配置AOP查看:Spring.Hello AOP 1.对于拦截规则@Pointcut的介绍: @Pointcut("execution (* cn.raffaello.service.. ...

  5. spring的aop详解

    一.aop术语 1.连接点joinpoint: 程序执行的某个特定位置:如类开始初始化之前.类初始化之后.类某个方法调用前.调用后等.Spring仅支持方法的连接点,即仅能在方法调用前.方法调用后以及 ...

  6. 【转载】Spring AOP详解 、 JDK动态代理、CGLib动态代理

    Spring AOP详解 . JDK动态代理.CGLib动态代理  原文地址:https://www.cnblogs.com/kukudelaomao/p/5897893.html AOP是Aspec ...

  7. spring事务详解（三）源码详解

    系列目录 spring事务详解(一)初探事务 spring事务详解(二)简单样例 spring事务详解(三)源码详解 spring事务详解(四)测试验证 spring事务详解(五)总结提高 一.引子 ...

  8. Spring AOP详解及简单应用

    Spring AOP详解   一.前言 在以前的项目中,很少去关注spring aop的具体实现与理论,只是简单了解了一下什么是aop具体怎么用,看到了一篇博文写得还不错,就转载来学习一下,博文地址: ...

  9. 转：Spring AOP详解

    转:Spring AOP详解 一.前言 在以前的项目中,很少去关注spring aop的具体实现与理论,只是简单了解了一下什么是aop具体怎么用,看到了一篇博文写得还不错,就转载来学习一下,博文地址: ...

随机推荐

  1. 【BZOJ4754】独特的树叶（哈希）

    [BZOJ4754]独特的树叶(哈希) 题面 BZOJ 给定一个\(n\)个节点的树A和一个\(n+1\)个节点的树\(B\) 求\(B\)的一个编号最小的节点,使得删去这个节点后\(A,B\)同构 ...

  2. UESTC--1730

    原题链接:http://acm.uestc.edu.cn/problem.php?pid=1730 分析:线段树单点更新,区间求和. #include<iostream> #include ...

  3. Codeforces 937.D Sleepy Game

    D. Sleepy Game time limit per test 2 seconds memory limit per test 256 megabytes input standard inpu ...

  4. Ubuntu配置vncserver

    https://help.aliyun.com/knowledge_detail/59330.html 首先,安装桌面环境和vnc4server: sudo apt-get install gnome ...

  5. 简单去除exe自校验方式

    简单去除exe自校验方式 一.      自校验定义: 这些程序会检查自己有没有被修改,如果发现被修改的话,便会离开或进行其它动作.基本的校检方法包括 checksum, 检查大小, 检查跳转代码,等 ...

  6. Kubernetes - Deploy Containers Using YAML

    In this scenario, you'll learn how to use Kubectl to create and launch Deployments, Replication Cont ...

  7. ios 虚拟机中文件下载路径

    每个人mac上的路径会有不同,你可以打印出你文件下载存放的路径,然后拷贝一下,再单击桌面空白处,最上面的导航栏上有个“前往”,然后找到“前往文件夹”,粘贴一下,就可以找到了.

  8. WebAPI IE8、IE9 跨域问题

    关于WebAPI跨域的问题,网上已经很多了,以下方案可以解决很多跨域问题,但是都不支持IE8.IE9浏览器,JSONP也只能支持Get请求 通过dll配置 Install-Package Micros ...

  9. 最小生成树的边的概念问题！！！ 最小生成树的计数 bzoj 1016

    1016: [JSOI2008]最小生成树计数 Time Limit: 1 Sec  Memory Limit: 162 MBSubmit: 5292  Solved: 2163[Submit][St ...

  10. CF821 D. Okabe and City 图 最短路

    Link 题意:给出$n*m$大小的地图,已有$k$盏灯亮,人从左上角出发,右下角结束,期间必须走路灯点亮的地方,他可以在任意时刻消耗一枚硬币点亮一行或一列灯,他最多同时点亮一行或一列灯,要想点亮别的 ...