最近在学Java的动态代理和Spring面向切面编程,越来越觉得Spring设计的真的是太完美了。于是,想一个最简单的例子来跑一下,但问题多多,显示缺少,Aspectj里面的对应的类,导入Aspectj.jar呗,但是装Aspectj.jar跟一般的导入.jar不一样,还需要安装并修改Path变量,添加安装目录下的bin目录到PATH中,并将安装目录下lib目录里的.jar文件导入MyEclipse;然后,又出现了NoSuchMethodError: net.sf.cglib.proxy.Enhancer.setInterceptDuringConstruction(Z)V错误,于是又找cglib.jar包,导入.jar包,依然是同样的错误,搜了搜,原来是应该导入cglib-nodep-2.1_3.jar而不是cglib2.jar,导入完成,问题解决,bravo!
//AOPTest.java
package com.spring.aop;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;public class AOPTest {public static void main(String[] args) {// TODO Auto-generated method stubApplicationContext ctx=new ClassPathXmlApplicationContext("aop.xml");Consume consume=(Consume)ctx.getBean("consume");consume.consumeService();}}
//Consume.java
package com.spring.aop;public class Consume {public void consumeService(){System.out.println("The food is delicious!");}}
//Service.javapackage com.spring.aop;public class Service {public void beforConsume(){System.out.println("Before consume!");}public void afterConsume(){System.out.println("After consume!");}}
//配置文件
<?xml version="1.0" encoding="UTF-8"?><beans xmlns=""xmlns:xsi=""xmlns:aop=""xsi:schemaLocation="http://www.springframework.org/schema/beans/spring-beans-3.0.xsdhttp://www.springframework.org/schema/aop/spring-aop-3.0.xsd"><bean name="service" class="com.spring.aop.Service"/><bean name="consume" class="com.spring.aop.Consume"/><aop:config><aop:aspect ref="service"><aop:pointcut id="consumeService" expression="execution(* *.consumeService(..))" /><aop:before pointcut-ref="consumeService" method="beforConsume"/><aop:after pointcut-ref="consumeService" method="afterConsume"/></aop:aspect></aop:config></beans>
//程序依赖包和结果
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,没有什么可留恋,只有抑制不住的梦想,