使用 @AspectJ 的一个例子

    首先,要求JDK版本为5以上,且需要导入以下9个包:
    1.asm-2.2.3.jar
    2.asm-commons-2.2.3.jar
    3.asm-util-2.2.3.jar
    4.aspectjrt.jar
    5.aspectjweaver.jar
    6.log4j-1.2.14.jar
    7.commons-logging.jar
    8.cglib-nodep-2.1_3.jar
    9.spring.jar
    还是以前面的HelloSpeaker为例子:

package org.hvp.aspect;

public class HelloSpeaker {
    public void hello(String name) {
        System.out.print("Hi," + name);
    }
}

    使用@AspectJ

package org.hvp.aspect;

import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.aop.aspectj.annotation.AspectJProxyFactory;

@Aspect
public class HelloSpeakerProxy {
    @After("execution(* hello(..))")
    public void welcome() {
        System.out.println(", welcome to our pub.");
    }

    public HelloSpeaker getHelloSpeakerProxy() {
        AspectJProxyFactory factory = new AspectJProxyFactory();
        factory.setTarget(new HelloSpeaker());
        factory.addAspect(HelloSpeakerProxy.class);
        return factory.getProxy();
    }

    public static void main(String[] args) {
        HelloSpeakerProxy proxy = new HelloSpeakerProxy();
        HelloSpeaker helloSpeaker = proxy.getHelloSpeakerProxy();
        helloSpeaker.hello("Huy Vanpom");
    }
}