Spring-AOP通知获取数据

    //JoinPoint：用于描述切入点的对象，必须配置成通知方法中的第一个参数，可用于获取原始方法调用的参数
    @Before("pt()")
    public void before(JoinPoint jp) {
        Object[] args = jp.getArgs();
        System.out.println(Arrays.toString(args));
    }
    @After("pt2()")
    public void after(JoinPoint jp) {
        Object[] args = jp.getArgs();
        System.out.println(Arrays.toString(args));
        System.out.println("after advice ...");
    }

    //ProceedingJoinPoint：专用于环绕通知，是JoinPoint子类，可以实现对原始方法的调用
    @Around("pt()")
    public Object around(ProceedingJoinPoint pjp) throws Throwable{
        Object[] args = pjp.getArgs();
        System.out.println(Arrays.toString(args));
        Object ret = pjp.proceed(args);
        return ret;
    }

//设置返回后通知获取原始方法的返回值，要求returning属性值必须与方法形参名相同
    @AfterReturning(value = "pt()",returning = "ret")
    public void afterReturning(JoinPoint jp,String ret) {
        System.out.println("afterReturning advice ..."+ret);
    }

    @Around("pt()")
    public Object around(ProceedingJoinPoint pjp) {
        Object ret = pjp.proceed();
        return ret;
    }

//设置抛出异常后通知获取原始方法运行时抛出的异常对象，要求throwing属性值必须与方法形参名相同
    @AfterThrowing(value = "pt()",throwing = "t")
    public void afterThrowing(Throwable t) {
        System.out.println("afterThrowing advice ..."+t);
    }

    @Around("pt()")
    public Object around(ProceedingJoinPoint pjp) {
        Object ret = null;
        try {
            ret = pjp.proceed();
        } catch (Throwable t) {
            t.printStackTrace();
        }
        return ret;
    }