JAVA aop @AfterThrowing 无法捕获异常

Question

我想在这个方法出现异常时做一些动作。因此，我制作了 AfterReturning、AfterThrowing 等 aop 函数...

我故意更改了引发异常的方法。但是请求到达AfterReturning，即使发生异常也不是AfterThrowing。

如何让这个请求到达 AfterThrowing 方法？

    @EventListener
    @GetHost
    public void getHost(ContextRefreshedEvent event) throws Exception {

        try {
            prHostName = InetAddress.getLocalHost().getHostName();
            prIpAddr = InetAddress.getLocalHost().getHostAddress();

            //making exception on purpose
            String[] tmp = new String[0];
            prIpAddr = tmp[1];


        } catch (Exception exception) {
            prHostName = "unknown";
            prIpAddr = "unknown";
            System.out.println("unknown");
            exception.printStackTrace();

        }
    }

有aop方法

    @Pointcut("@annotation(com.etc.web.annotation.GetHost)")
    public void componentMethod() {}

    @Before("componentMethod()")
    public void beforeComponent(JoinPoint point) {
        System.out.println("beforeComponent");

    }

    @Around("componentMethod()")
    public Object aroundComponent(ProceedingJoinPoint point) throws Throwable {

        System.out.println("aroundComponent");
        Object retVal = point.proceed();

        return retVal;
    }
    @AfterReturning(pointcut = "componentMethod()", returning = "result")
    public void afterComponent(JoinPoint point, Object result) {
        System.out.println("afterReturnComponent");

    }

    @AfterThrowing(pointcut = "componentMethod()", throwing = "exception")
    public void afterThrowingComponent(JoinPoint point, Throwable exception) throws Exception {
        System.out.println("afterThrowingComponent");

       
    }

请帮助我。谢谢！

Answer 1

方法没有异常退出，因为异常被捕获，方法正常退出。所以当然不会触发@AfterThrowing。这不应该让你感到惊讶。

JAVA aop @AfterThrowing 无法捕获异常

JAVA aop @AfterThrowing couldn't catch Exception

java

aop

exception