我想支持提交到同一网址的几种不同内容类型:
e.g:
application/x-www-form-urlencoded
,multipart/form-data
,application/json
我想做点什么:
post {
contentType(`application/x-www-form-urlencoded`) |
contentType(`multipart/form-data`) {
// user POSTed a form
entity(as[MyCaseClass]) { data =>
complete { data.result }
}
} ~ contentType(`application/json`) {
// user POSTed a JSON object
entity(as[MyCaseClass]) { data =>
complete { data.result }
}
}
}
我认为可能有一些方法可以通过自定义编组和解组来实现这一点,但我只需要在我的服务中的一两个位置,这看起来非常简单。有人可以帮忙吗?
答案 0 :(得分:6)
由于喷雾编组系统具有深刻的巧妙性,因此有一种非常优雅的方法可以实现这一目标。代码(gist)说明了这一点:
case class User(name: String, no: Int)
// Json marshaller
object UnMarshalling extends DefaultJsonProtocol {
val jsonUser = jsonFormat2(User)
val textUser = Unmarshaller[User](`text/plain`) {
case HttpEntity.NonEmpty(contentType, data) =>
val res = data.asString.drop(5).dropRight(1).split(',')
User(res(0),res(1).toInt)
}
implicit val userMarshal = Unmarshaller.oneOf(jsonUser, textUser)
}
class UnMarshalTest extends FunSpec with ScalatestRouteTest with Matchers {
import UnMarshalling._
// Marshals response according to the Accept header media type
val putOrder = path("user") {
put {
// Namespace clash with ScalaTestRoutes.entity
MarshallingDirectives.entity(as[User]) {
user =>
complete(s"no=${user.no}")
}
}
}
describe("Our route should") {
val json = """ {"name" : "bender", "no" : 1234} """
it("submit a json") {
Put("/user", HttpEntity(`application/json`,json)) ~> putOrder ~> check {
responseAs[String] should equal("no=1234")
}
}
it("Submit text") {
Put("/user", HttpEntity(`text/plain`,"""User(Zoidberg,322)""")) ~> putOrder ~> check {
responseAs[String] should equal("no=322")
}
}
}
}