jackson-http4k.kt

[...]
import org.http4k.format.Jackson.auto
class PersonHandlerProvider(private val service: PersonService) {
    private val personLens: BiDiBodyLens<Person> = Body.auto<Person>().toLens()
    private val personListLens: BiDiBodyLens<List<Person>> = Body.auto<List<Person>>().toLens()

    fun getAllHandler(): HttpHandler = {
        Response(OK).with(
            personListLens of service.findAll()
        )
    }

    fun postHandler(): HttpHandler = { req ->
        val personToAdd = personLens.extract(req)
        service.add(personToAdd)
        Response(OK)
    }
    //...more
}