在insert - ktor公开之后获取自动生成的id

import io.ktor.application.*
import io.ktor.features.ContentNegotiation
import io.ktor.features.StatusPages
import io.ktor.http.HttpStatusCode
import io.ktor.jackson.jackson
import io.ktor.request.receive
import io.ktor.response.respond
import io.ktor.routing.*
import io.ktor.server.engine.embeddedServer
import io.ktor.server.netty.Netty
import org.jetbrains.exposed.dao.IntIdTable
import org.jetbrains.exposed.sql.Database
import org.jetbrains.exposed.sql.insertAndGetId
import org.jetbrains.exposed.sql.transactions.transaction

data class Item(val id: Int, val name: String)

object Items : IntIdTable() {
    val name = varchar("name", 50)
}

fun Application.module() {
    install(ContentNegotiation) {
        jackson { }
    }

    install(StatusPages) {
        exception<Throwable> { cause ->
            call.respond(HttpStatusCode.InternalServerError, cause.localizedMessage)
        }
    }

    Database.connect("jdbc:h2:mem:test;DB_CLOSE_DELAY=-1;", driver = "org.h2.Driver")

    transaction {
        SchemaUtils.create(Items)
    }

    routing {
        route("/items") {
            post {
                val item = call.receive<Item>()
                val id = transaction {
                    Items.insertAndGetId {
                        it[name] = item.name
                    }
                }
                call.respond(HttpStatusCode.Created, id.value)
            }
        }
    }
}

fun main() {
    embeddedServer(Netty, port = 8080, module = Application::module).start(wait = true)
}