AOP Practice with Aspectj

最新推荐文章于 2022-06-23 18:51:00 发布

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本文介绍如何在 Eclipse 中使用 AspectJ 插件 (AJDT) 创建 AOP 项目，并通过示例展示如何定义切面来修改 HelloWorld 类的行为。

AOP Practice with Aspectj

a plugin in eclipse named ajdt
update URL: http://download.eclipse.org/tools/ajdt/36/update

create a new AspectJ project with name aopdemo

a very simple sample class HelloWorld.java:
package com.sillycat.aspectjdemo;

public class HelloWorld {

public static void main(String[] args){
new HelloWorld().sayHello();

}
public void sayHello(){
System.out.print("hello ");
}
}

One aspectj class, AspectHelloWorld.aj:
package com.sillycat.aspectjdemo;

public aspect AspectHelloWorld {
pointcut greeting():
call(void HelloWorld.sayHello());
after() returning: greeting() {
System.out.println("world");
}
}

Add the library, [Java Build Path] ----> [Libraries] -----> [Add Variable] ----> [Aspectjrt_lib]

Run as AspectJ/Java Application

references: