Hi, i have Exceptions defined like this ```const val reason = "store not found" @ResponseStatus(code...

# spring

[ReddyTintaya]

Hi, i have Exceptions defined like this

const val reason = "store not found"
@ResponseStatus(code = HttpStatus.NOT_FOUND, reason = reason)
class StoreNotFoundException : RuntimeException()

but i want to log the error whenever its been throw

const val reason = "store not found"
@ResponseStatus(code = HttpStatus.NOT_FOUND, reason = reason)
class StoreNotFoundException : RuntimeException(){
    init {
        warningLog(reason)
    }

    companion object {
        private val logger = LoggerFactory.getLogger(CustomException::class.java)
        fun warningLog(message: String) {
            logger.warn(message)
        }
    }
}

i've implemented like this

Since i have a lot of exceptions defined like this and i want to have the log whenever one is threw, how can i generalize this behavior?
how can i write a CustomException?

[nicholasnet]

Ok I think you need to use ControllerAdvice and catch the exception there. After that you can log it and whatever you want to do with it.

[ReddyTintaya]

yes, like this

@PutMapping("/{id}")
fun updateStore(...): Store {
        ... ?: throw  StoreNotFoundException()
}

[nicholasnet]

Oops accidentally edited the previous message. But ControllerAdvice is one way to do this I would say.

[ReddyTintaya]

already tried lke this:

try{
    ...
    throw StoreNotFoundException()
}catch(e: StoreNotFoundException){
    log("store not found throwed")
}

[ReddyTintaya]

but doing this for every endpoint is a lot when the only thing that i want to do is log the Exception message if it happen

[nicholasnet]

Ok I would do something like this
collabedit.com/bt2t8

[kqr]

exceptionhandler is definately way to go

[kqr]

why should be exception responsible for logging?

[ReddyTintaya]

@kqr you right! 😅

[ReddyTintaya]

thanks

[ReddyTintaya]

Finally i solved my problem with this:

@ControllerAdvice
class GlobalResponseException {
    @ExceptionHandler(RuntimeException::class)
    private fun handleRuntimeException(e: Exception) {
        ExceptionLogger.log("$e at ${e.stackTrace?.first()?.methodName} inside ${e.stackTrace?.first()?.fileName}")
    }
}

class ExceptionLogger {
    companion object {
        private val logger = LoggerFactory.getLogger(ExceptionLogger::class.java)
        fun log(message: String) = logger.warn(message)
    }
}

(if in the future someone has the same problem :3 )
like my Exceptions inherit from RuntimeException() it does everything i need