文章目錄

• 導讀
• 實例

導讀

Spring-AOP 自動創建代理

Spring-AOP 自動創建代理之BeanNameAutoProxyCreator

Spring-AOP 自動創建代理之DefaultAdvisorAutoProxyCreator

Spring-AOP 自動創建代理之AnnotationAwareAspectJAutoProxyCreator

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實例

代碼已托管到Github—> https://github.com/yangshangwei/SpringMaster

準備工作參考 ：http://blog.csdn.net/yangshangwei/article/details/77519375#準備工作

接口

package com.xgj.aop.spring.advisor.aspectJ.aspectJByConf;public interface Waiter {public void greetTo(String name);public void serverTo(String name); }

POJO

package com.xgj.aop.spring.advisor.aspectJ.aspectJByConf;public class NaiveWaiter implements Waiter {@Overridepublic void greetTo(String name) {System.out.println("NaiveWaiter Greet To " + name);}@Overridepublic void serverTo(String name) {System.out.println("NaiveWaiter Server To " + name);}}

切面POJO

package com.xgj.aop.spring.advisor.aspectJ.aspectJByConf;import org.aspectj.lang.annotation.Aspect; import org.aspectj.lang.annotation.Before;/*** * * @ClassName: PreGreetingAspect* * @Description: 切面類* * @author: Mr.Yang* * @date: 2017年8月24日 下午3:21:15*/// 通過@Aspect將PreGreetingAspect標注為一個切面 @Aspect public class PreGreetingAspect {// 定義切點和增強類型@Before("execution(* greetTo(..))")public void beforeGreeting() {// 增強的橫切邏輯System.out.println("How are you ?");} }

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"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"><!-- 通過配置使用@AspectJ --><!-- 目標Bean --> <bean id="waiter" class="com.xgj.aop.spring.advisor.aspectJ.aspectJByConf.NaiveWaiter"/> <!-- 使用了@AspectJ注解的切面類 --> <bean class="com.xgj.aop.spring.advisor.aspectJ.aspectJByConf.PreGreetingAspect"/> <!-- 自動代理創建器，自動將@AspectJ注解切面類織入目標Bean中 --> <bean class="org.springframework.aop.aspectj.annotation.AnnotationAwareAspectJAutoProxyCreator"/></beans>

單元測試

package com.xgj.aop.spring.advisor.aspectJ.aspectJByConf;import org.junit.Test; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext;/*** * * @ClassName: PreGreetingAspectTest* * @Description:* * @author: Mr.Yang* * @date: 2017年8月24日 下午3:21:29*/ public class PreGreetingAspectTest {@Testpublic void test() {ApplicationContext ctx = new ClassPathXmlApplicationContext("classpath:com/xgj/aop/spring/advisor/aspectJ/aspectJByConf/conf-aspectJ.xml");Waiter naiveWaiter = ctx.getBean("waiter", Waiter.class);naiveWaiter.greetTo("XiaoGongJiang");naiveWaiter.serverTo("XiaoGongJiang");} }

運行結果：

2017-08-24 17:41:16,210 INFO [main] (AbstractApplicationContext.java:583) - Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@24177697: startup date [Thu Aug 24 17:41:16 BOT 2017]; root of context hierarchy 2017-08-24 17:41:16,609 INFO [main] (XmlBeanDefinitionReader.java:317) - Loading XML bean definitions from class path resource [com/xgj/aop/spring/advisor/aspectJ/aspectJByConf/conf-aspectJ.xml] How are you ? NaiveWaiter Greet To XiaoGongJiang NaiveWaiter Server To XiaoGongJiang

可以看到greetTo被正確的織入了增強.

總結

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