Scala (Spray/Akka)：请求内容格式错误：缺少实现答案

【问题标题】：Scala (Spray/Akka) : The request content was malformed: an implementation is missingScala (Spray/Akka)：请求内容格式错误：缺少实现
【发布时间】：2016-09-23 21:04:06
【问题描述】：

我在使用 Spray 获取帖子正文时遇到问题：

当我发送 Json 调用时，我收到“请求内容格式错误：缺少实现”

我发送的Json是请求中创建的Json（val测试）正如代码中提到的，我从Providing a JsonFormat for a Sequence of Objects获得了实现

CreateOrder.Scala

import spray.json._
import spray.httpx.unmarshalling._
import spray.httpx.marshalling._


case class CreateOrder (order_number: String,
                        order_source_code: String,
                        created_order_date: String,
                        shipping_address: String,
                        payment_method: String,
                        customer_name: String,
                        customer_tel: String,
                        customer_postcode: String,
                        customer_email: String,
                        ob_zone: String,
                        order_line_items: Seq[Order_Line_Items]
                        )
case class Order_Line_Items (order_line_item_number: String,
                                           sku_number: String,
                                           item_name: String,
                                           paid_price: String
                                          )

//Source : https://stackoverflow.com/questions/21756836/providing-a-jsonformat-for-a-sequence-of-objects
object CreateOrderProtocol extends DefaultJsonProtocol {
   implicit object OrderItemsFormat extends RootJsonFormat[Order_Line_Items] {
    def write(oli: Order_Line_Items) = JsObject(Map(
      "order_line_item_number" -> JsString(oli.order_line_item_number),
      "sku_number" -> JsNumber(oli.sku_number),
      "item_name" -> JsString(oli.item_name),
      "paid_price" -> JsString(oli.paid_price)
    ))
    def read(value: JsValue): Order_Line_Items = ???
  }
  implicit object CreateOrderFormat extends RootJsonFormat[CreateOrder] {
    def write(order: CreateOrder) = JsObject(Map(
      "order_number" -> JsString(order.order_number),
      "order_source_code" -> JsString(order.order_source_code),
      "created_order_date" -> JsString(order.created_order_date),
      "shipping_address" -> JsString(order.shipping_address),
      "payment_method" -> JsString(order.payment_method),
      "customer_name" -> JsString(order.customer_name),
      "customer_postcode" -> JsString(order.customer_postcode),
      "customer_email" -> JsString(order.customer_email),
      "ob_zone" -> JsString(order.ob_zone),
      "order_line_items" -> JsArray(order.order_line_items.map(_.toJson).toList)
    ))
    def read(value: JsValue): CreateOrder = ???
  }
}

Main.Scala

path("dev" / "order" / "create") {
        headerValueByName("AppId") { appId =>
          headerValueByName("AppSecret") { appSecret =>
            post {
            entity(as[CreateOrder]){ req =>
                respondWithMediaType(`application/json`) {
                  complete{
                     val test = new CreateOrder("1","2","3","4","5","6","7","8","9","10",Seq( new Order_Line_Items("11","12","13","14"), new Order_Line_Items("21","22","23","24") ) )
                    if(elasticCaller.api_check(appId,appSecret)){
                        val reply = Map("Status"->"Success")
                        ModelConverter.fromAnyToJson(test)
                    }else{
                        val reply = Map("Status"->"Failed")
                        ModelConverter.fromAnyToJson(test)
                    }
                  }
                }
              }
            }
          }
        }
      }

【问题讨论】：

标签： json scala akka spray

【解决方案1】：

object CreateOrderProtocol extends DefaultJsonProtocol with SprayJsonSupport {

  implicit val OrderLineItemsFormat = jsonFormat(Order_Line_Items, "order_line_item_number", "sku_number", "item_name", "paid_price")
  implicit val OrderItemsFormat = jsonFormat(CreateOrder, "order_number", "order_source_code", "created_order_date",
    "shipping_address", "payment_method", "customer_name", "customer_tel", "customer_postcode", "customer_email",
    "ob_zone", "order_line_items")

}

来自：Spray-json deserializing nested object

【讨论】：