Content-Type is special – it should come with/from the data you're completing
with – please don't hardcode it like that (it won't work, and that's on
purpose).
Here's how you'd use JSON in a real world app:
object TestServer extends App
with SprayJsonSupport with DefaultJsonProtocol {
implicit val system = ActorSystem()
implicit val materializer = ActorMaterializer()
import system.dispatcher
import Directives._
final case class Thingy(value: String)
implicit val thingyFormat = jsonFormat1(Thingy)
val routes =
complete(Thingy(""))
val bindingFuture = Http().bindAndHandle(routes, interface = "localhost",
port = 8080)
println(s"Server online at http://localhost:8080/\nPress RETURN to stop...")
Console.readLine()
bindingFuture.flatMap(_.unbind()).onComplete(_ ⇒ system.terminate())
}
Please read up about JSON Support:
http://doc.akka.io/docs/akka/2.4.4/scala/http/common/json-support.html#akka-http-spray-json
If you really want to do raw hardcoding of content type header, you can by
returning HttpEntity:
val routes =
complete(HttpEntity(ContentTypes.`application/json`, "{}"))
$ http localhost:8080 Accept:*/*
HTTP/1.1 200 OK
Content-Length: 2
Content-Type: application/json
Date: Fri, 22 Apr 2016 14:24:19 GMT
Server: akka-http/2.4-SNAPSHOT
{}
Happy hakking!
--
Konrad `ktoso` Malawski
Akka @ Lightbend
On 22 April 2016 at 16:19:27, dmitry.mesh...@iohk.io (dmitry.mesh...@iohk.io)
wrote:
Hi!
I have a simple route, that should respond (as I expect) with
`application/json` media type.
def height: Route = {
path("height") {
//
respondWithHeaders(`Content-Type`(MediaTypes.`application/json`))(complete("???"))
// also don't work
respondWithHeaders(RawHeader("Content-Type",
"application/json"))(complete("???"))
}
}
But when I do requests to this route, I see Content-Type: text/plain :
What should I change to get `application/json` media typ&
$ curl -X GET -v 'http://localhost:9085/blocks/height'
* Hostname was NOT found in DNS cache
* Trying 127.0.0.1...
* Connected to localhost (127.0.0.1) port 9085 (#0)
> GET /blocks/height HTTP/1.1
> User-Agent: curl/7.35.0
> Host: localhost:9085
> Accept: */*
>
< HTTP/1.1 200 OK
* Server akka-http/2.4.4 is not blacklisted
< Server: akka-http/2.4.4
< Date: Fri, 22 Apr 2016 14:04:18 GMT
< Content-Type: text/plain; charset=UTF-8
< Content-Length: 3
<
* Connection #0 to host localhost left intact
???
--
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>>>>>>>>>> Read the docs: http://akka.io/docs/
>>>>>>>>>> Check the FAQ:
>>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html
>>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user
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