Sorry... but I met another problem... I want to b...

# http4k

[Ray Eldath]

Sorry... but I met another problem...

I want to build a Filter which can catch ApiException thrown in handler, and then wraps then into a val error = Body.auto<ApiException>().toLens() , so i can avoid use return@run Response(...).with(...) in every place rejecting a malformed request with a json body which constituted of reason and custom diagnose info. so i write this, as learn from `CatchLensFailure`:

private val filterChain by lazy {
    Filter.NoOp.then(Filter { next ->
        {
            try {
                next(it)
            } catch (e: ApiException) {
                Response(Status.BAD_REQUEST).with(error of e)
            }
        }
    })
}

but seems that whenever the of operator meets something Exception , it not works. instead of construct the content, it'll print the stacktrace.

i debug and examine the stacktrace but still cant find where is this behavior defined... is there any workaround...?