spring AOP+Aspectj的异常处理

Question

但是，我想改变它，这样从域层抛出的异常将在AOP层中处理。AOP层会产生某种错误响应，并将其发送回spring控制器/web服务层。

我可以创建一个IBizResponse并创建它的两个子类/接口，可能是SuccessResponse和ErrorResponse，并使域层方法返回IBizResponse。但是，我不知道如何使AOP将ErrorResponse对象返回到服务层。

Answer 1

我遇到了相同的场景，在任何异常处理的情况下，我必须返回一个错误响应DTO。在@Aspect类内部,

@Aspect
@Component
public class MyAspect{

    private static final Logger LOGGER = LoggerFactory.getLogger(MyAspect.class);

    @Pointcut("execution(* com.linda.dao.strategy.*.*(..))")
    public void strategyMethods() { }

    @Pointcut("execution(* com.linda.controller.*.*(..)) || execution(* com.linda.Manager.*(..))")
    public void controllerMethods(){  }

    @Around("strategyMethods()")
    public Object profileStrategyMethods(ProceedingJoinPoint pjp) throws Throwable {

        long start = System.currentTimeMillis();
        Object output = null;
        LOGGER.info("Class:"+pjp.getTarget().getClass()+" entry -> method ->"+pjp.getSignature().getName());
        try{
            output = pjp.proceed();
            long elapsedTime = System.currentTimeMillis() - start;
            LOGGER.info("Method execution time: " + elapsedTime + " milliseconds.");
            LOGGER.info("Class:"+pjp.getTarget().getClass()+" exit -> method ->"+pjp.getSignature().getName());
        }catch(Throwable t){
            throw new InternalServerException(t.getMessage());  
        }

        return output;
    }

    @AfterThrowing(pointcut="execution(* com.linda.dao.strategy.*.*(..)) || execution(* com.linda.controller.*.*(..)) || execution(* com.linda.Manager.*(..))",throwing = "ex")
    public void doRecoveryActions(JoinPoint joinPoint, Throwable ex) {

        Signature signature = joinPoint.getSignature();
        String methodName = signature.getName();
        String stuff = signature.toString();
        String arguments = Arrays.toString(joinPoint.getArgs());
        LOGGER.error("Write something in the log... We have caught exception in method: "
                + methodName + " with arguments "
                + arguments + "\nand the full toString: " + stuff + "\nthe exception is: "
                + ex.getMessage());
    }
}

定义了另一个用于异常处理的类，如下所示：

@ControllerAdvice
public class ExceptionLogAdvice {

    @ExceptionHandler(InternalServerException.class)
    @ResponseStatus(HttpStatus.BAD_GATEWAY)
    @ResponseBody
    public ResponseEntity<Object> handleValidationException(final InternalServerException internalServerException){

        ErrorResponseDTO dto = constructErrorResponse(internalServerException);
        return ResponseEntity.status(HttpStatus.BAD_GATEWAY).body(dto);
    }
}

修改了一些代码，因为我不能共享实际的代码。希望我把概念讲清楚了。