spring开发_Annotation_AOP_Before增强处理

项目结构：

http://www.cnblogs.com/hongten/gallery/image/112691.html

在此项目中除了要引入基本springjar包：

spring.jar和commons-logging.jar

还需要引入：

aspectjweaver.jar

aspectjrt.jar

两个jar包！！！

/spring_2000_aop_annotation/src/com/b510/app/test/SpringTest.java

 1 package com.b510.app.test;
 2 
 3 import org.springframework.context.ApplicationContext;
 4 import org.springframework.context.support.ClassPath 5 
 6 import com.b510.service.AnimalService;
 7 
 8 /**
 9  * 测试类
10  * 
11  * @author Hongten
12  * 
13  */
14 public class SpringTest {
15 
16     public static void main(String[] args) {
17         ApplicationContext act = new ClassPath18         AnimalService cat = (AnimalService) act.getBean("cat");
19         // 调用printResult()方法
20         cat.printResult();
21         // 调用printHobby()方法
22         cat.printHobby();
23     }
24 }

/spring_2000_aop_annotation/src/com/b510/aspect/MyBeforeAdvice.java

 1 package com.b510.aspect;
 2 
 3 import org.aspectj.lang.annotation.Aspect;
 4 import org.aspectj.lang.annotation.Before;
 5 
 6 /**
 7  * 定义一个Before增强处理类
 8  * 
 9  * @author Hongten
10  * 
11  */
12 // 定义切面
13 @Aspect
14 public class MyBeforeAdvice {
15 
16     private int i = 0;
17 
18     /**
19      * 搜索com.b510.service.impl包下的所有类及其类的方法，作为本方法的切入点(Jionpoint)
20 */
21     @Before("execution(* com.b510.service.impl.*.*(..))")
22     public void getVisits() {
23         System.out.println("自定义切面MyBeforeAdvice类的getVisits()方法的执行此数为" + (++i));
24     }
25 }

/spring_2000_aop_annotation/src/com/b510/service/AnimalService.java

 1 package com.b510.service;
 2 
 3 /**
 4  * 定义动物接口
 5  * 
 6  * @author Hongten
 7  * 
 8  */
 9 public interface AnimalService {
10     /**
11      * 打印信息
12 */
13     public void printResult();
14 
15     /**
16      * 打印兴趣爱好
17 */
18     public void printHobby();
19 }

/spring_2000_aop_annotation/src/com/b510/service/impl/CatServiceBean.java

 1 package com.b510.service.impl;
 2 
 3 import org.springframework.stereotype.Component;
 4 
 5 import com.b510.service.AnimalService;
 6 /**
 7  * 定义一个动物的实现类CatServiceBean
 8  * @author Hongten
 9  *
10  */
11 @Component
12 public class CatServiceBean implements AnimalService {
13 
14     /**
15      * 名字
16 */
17     private String name;
18     /**
19      * 兴趣爱好
20 */
21     private String hobby;
22 
23     public String getHobby() {
24         return hobby;
25     }
26 
27     public String getName() {
28         return name;
29     }
30 
31     @Override
32     public void printHobby() {
33         System.out.println("我的兴趣爱好是" + getHobby());
34     }
35 
36     @Override
37     public void printResult() {
38         System.out.println("大家好，我是" + getName());
39     }
40 
41     public void setHobby(String hobby) {
42         this.hobby = hobby;
43     }
44 
45     public void setName(String name) {
46         this.name = name;
47     }
48 }

/spring_2000_aop_annotation/src/beans.

要添加：

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

http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd

请看下面：

 1 <? 2 <beans  3      4      5     xsi:schemaLocation="http://www.springframework.org/schema/beans 
 6     http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
 7     http://www.springframework.org/schema/context
 8     http://www.springframework.org/schema/context/spring-context-3.0.xsd
 9     http://www.springframework.org/schema/aop
10     http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
11     <context:component-scan base-package="com.b510.aspect,com.b510.service">
12         <context:include-filter type="annotation"
13             expression="org.aspectj.lang.annotation.Aspect" />
14     </context:component-scan>
15     <!-- 启动@AspectJ支持 -->
16     <aop:aspectj-autoproxy />
17     <!--
18         不适用spring的19         />
20     -->
21 
22     <bean id="cat" >
23         <property name="name" value="加菲" />
24         <property name="hobby" value="吃，喝，睡觉" />
25     </bean>
26 </beans>

运行结果：

 1 2012-3-13 20:33:46 org.springframework.context.support.AbstractApplicationContext prepareRefresh
 2 信息: Refreshing org.springframework.context.support.ClassPath 3 2012-3-13 20:33:46 org.springframework.beans.factory. 4 信息: Loading class path resource [beans. 5 2012-3-13 20:33:56 org.springframework.context.support.AbstractApplicationContext obtainFreshBeanFactory
 6 信息: Bean factory for application context [org.springframework.context.support.ClassPath 7 2012-3-13 20:33:56 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
 8 信息: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@12a3722: defining beans [myBeforeAdvice,catServiceBean,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.aop.config.internalAutoProxyCreator,cat]; root of factory hierarchy
 9 自定义切面MyBeforeAdvice类的getVisits()方法的执行此数为1
10 大家好，我是加菲
11 自定义切面MyBeforeAdvice类的getVisits()方法的执行此数为2
12 我的兴趣爱好是吃，喝，睡觉

总结：每次运行的时候，都要等上12秒钟左右，有结果可以看出，Before增强处理的运行方式:

@Before("execution(* com.b510.service.impl.*.*(..))")

搜索com.b510.service.impl包下的所有类及其类的方法，作为本方法的切入点(Jionpoint)

原标题：spring开发_Annotation_AOP_Before增强处理

关键词：java,spring,annotation,aspect,before,@Before