sping aop 源码分析

时间：2020-07-08 13:07:10 阅读：52 评论：0 收藏：0 [点我收藏+]

标签：bean obj 方式 npoi read before exec spec 程序实现

测试项目已上传到码云，可以下载：https://gitee.com/yangxioahui/aopdemo.git

具体如下：

public interface Calc {
    Integer add(int num1,int num2);
}
//目标是对add 方法进行切入
@Component
public class MyMath implements Calc {

   public Integer add(int num1,int num2){
        return num1+num2;
    }

}
@Aspect
@Component
public class MyAspectJ {
    @Pointcut(" execution(* com.yang.xiao.hui.aop.MyMath.*(..))")
    private void pointcut(){}
    @Before(value = "pointcut()")
    public void before(JoinPoint joinPoint){
        System.out.println("before。。。。。");
    }
    @After(value = "pointcut()")
    public void after(JoinPoint joinPoint){
        System.out.println("after。。。。");
    }

    @AfterReturning(value = "pointcut()")
    public void afterReturning(){
        System.out.println("afterReturning。。。");
    }

    @AfterThrowing(value = "pointcut()")
    public void afterThrowing(JoinPoint joinPoint){
        System.out.println("afterThrowing。。。。");
    }

    @Around(value ="pointcut()")
    public void around(ProceedingJoinPoint joinPoint){
        System.out.println("around-before。。。。");
        try {
            Object proceed = joinPoint.proceed();
            System.out.println("around-after_return。。。");
        } catch (Throwable throwable) {
            System.out.println("around-throw。。。"+throwable.getMessage());
        }
        System.out.println("around-after。。。");
    }
}

//测试类
@Configuration
@ComponentScan("com.yang.xiao.hui.aop")
@EnableAspectJAutoProxy(exposeProxy = true)
public class App 
{
    public static void main( String[] args )
    {

        ApplicationContext ctx = new AnnotationConfigApplicationContext(App.class);
        Calc myMath = (Calc)ctx.getBean("myMath");
        myMath.add(3,5);
        System.out.println(ctx.getBean("myMath").getClass());


    }
}