spring3: Aspectj后置返回通知

Aspectj后置返回通知

接口：

package chapter1.server;

public interface IHelloService2 {

	public int sayAfterReturning(String param);

}

　　

接口实现

package chapter1.service.impl;

import chapter1.server.IHelloService2;

public class HelloService2 implements IHelloService2 {

	public int sayAfterReturning(String param) {

		// TODO Auto-generated method stub

		System.out.println("============ say after returning:" + param);

		return 1;

	}

}

　　

配置：

一定要加：<aop:aspectj-autoproxy/> 启动对Aspectj的支持

<aop:aspectj-autoproxy/>

<bean id="helloService" class="chapter1.service.impl.HelloService2" />

<bean id="aspect" class="chapter1.aop.HelloAspect2"/>

　　

AOP切面：

一定要引入：org.aspectj.lang.annotation.Aspect; 否则不执行

package chapter1.aop;

import org.aspectj.lang.annotation.Aspect;

import org.aspectj.lang.annotation.Pointcut;

import org.aspectj.lang.annotation.AfterReturning;

@Aspect

public class HelloAspect2 {

	//方法一

	//通知

	@AfterReturning(

			//value="execution(* chapter1..*.sayAdvisorBefore(java.lang.String)) and args(param)",

			value="execution(* chapter1..*.sayAfterReturning(..))",

			argNames="retVal",

			returning="retVal")

	public void afterReturningAdvice(Object retVal)

	{

		System.out.println("================= return after advice : " + retVal);

	}

	//方法二

	//定义切入点

	@Pointcut(value="execution(* chapter1..*.sayAfterReturning(java.lang.String) and args(param))", argNames="param")

	public void returnPointcut(String param) {}

	public void afterReturningAdvice2(Object retVal)

	{

	}

}

　　

测试程序：

@Test

	public void testAspectAfterReturning()

	{

		ApplicationContext context = new ClassPathXmlApplicationContext("chapter1/aspectj2.xml");

		IHelloService2 hello = context.getBean("helloService", IHelloService2.class);

		hello.sayAfterReturning("hahah");

	}

　　

结果：

============ say after returning:hahah
================= return after advice : 1