aspectj this , target

package com.sheng.aspectj;
//this 是否可以理解为所处的环境呢。。 呵呵

public aspect TestAspectj {
	pointcut beforeExecutionCut() : execution(void *..sayHello(..)) && target(com.sheng.aspectj.HelloWord);
	//两句的变化可以看eclipse左边的提示，如下图
	pointcut beforeCallCut() : call(void *..sayHello(..)) && this(com.sheng.aspectj.HelloWord);
	
//	pointcut beforeCallCut() : call(void *..sayHello(..)) && this(com.sheng.aspectj.Test);
	
	before() : beforeExecutionCut() {
		System.out.println("please say hello first");
	}
	
	before() : beforeCallCut() {
		System.out.println("please say hello second");
	}
}


package com.sheng.aspectj;

public class HelloWord {

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

}


package com.sheng.aspectj;

public class Test {
	void sayHello() {
		new HelloWord().sayHello();
	}
	
	public static void main(String []args) {
		new Test().sayHello();
	}
}