Ktor json validation with Hibernate Validator

BindJson.kt

// Convert application-json content to DTO with validation and rasing error message

suspend inline fun <reified T : Any> ApplicationCall.bindJson(): T {
    val dto = this.receive<T>()
    val violations = validator.validate(dto);
    if (violations.size > 0) {
        // Throw error messages when found violdations
        val details = violations.map {
            val propertyName = it.propertyPath.toString()
            val errorMessage = it.message
            "${propertyName}: $errorMessage"
        }
        // Your custom Exception in Status Page feature of Ktor application
        throw CustomException(details)
    } else {
        return dto
    }
}

Dto.kt

// A sample Dto model
// Define constraints for Dto
data class ConsumingRequestDto(
    @get:Positive // Do not declear `NotNull` because jackson will fill `0` to missing Int field
    val idolId: Int, // Yep, I like idol

    @get:Min(10, message = "最少投入10守护星") // Custom Chinese error message
    val star: Int
)

Route.kt

// A sample route

// Let create some consuming for our idol.
 route("consumings") {
        authenticate {
            post {
                // Validate request data and raise exceptions (or not)
                val dto = call.bindJson<ConsumingRequestDto>()
                call.respond(dto)
            }
        }
}

I think it's the best and simplest validation solution for personal project that uses Ktor.