Spring、Hello AOP

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AOP 概念：http://blog.csdn.net/moreevan/article/details/11977115

AOP 所使用到的jar 包：

aspectjrt.jar

common-annotations.jar

aspectjweaver.jar

cglib-nodep.jar

commons-logging.jar

spring.jar

1.在beans.xml中配置AOP的命名空间和Context的命名空间，同时打开AOP注解开关：

<beansxmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:p="http://www.springframework.org/schema/p"xmlns:context="http://www.springframework.org/schema/context/"xmlns:aop="http://www.springframework.org/schema/aop"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd http://www.springframework.org/schema/context/ http://www.springframework.org/schema/context/spring-context-3.1.xsd"><aop:aspectj-autoproxy /></beans>

2.新建PersonIService和PersonServiceBean :

public interface PersonIService {public void save();public void update();public String getObject(String name);}

public class PersonServiceImpl implements PersonIService {@Overridepublic void save() {System.out.println("这是一个Save方法！");}@Overridepublic void update() {System.out.println("这是一个Update方法！");}@Overridepublic String getObject(String name) {System.out.println("get方法获取对象= "+name+" 的对象");return "返回了"+name;}}

3.新建AOP拦截类：

// @Aspect 标注这个类是一个切面@Aspectpublic class MyInterceptor {@Pointcut("execution (* cn.raffaello.service..*.*(..))")private void anyMethod(){} // 声名一个切入点，声名方式比较奇特@Before("anyMethod()") // 定义前置通知public void doAccessCheck(){System.out.println("前置通知");}}

4.在beans.xml中分别注入PersonService和MyInterceptor:

<bean id="myInterceptor" class="cn.raffaello.aop.MyInterceptor" /><bean id="personIService" class="cn.raffaello.service.impl.PersonServiceImpl"/>

5.测试代码：

public class springTest {private PersonIService personIService=null;@Beforepublic void init(){ApplicationContext context=new ClassPathXmlApplicationContext("beans.xml");personIService=(PersonIService)context.getBean("personIService");}@Testpublic void test() {personIService.save();}}

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