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