Get content from Akka ResponseEntity in Scala - scala

Question

I do a GET HTTP call to a rest service which returns a json. I would like to parse the json to a scala object but here I got stuck. I am using the Akka api and I can't manage to retrieve the content from the Akka's ResponseEntity
Here is my sbt file:
name := "ScalaHttp"
version := "1.0"
scalaVersion := "2.11.8"
libraryDependencies ++={
val akkaV = "2.4.5"
Seq(
"com.typesafe.akka" %% "akka-http-core" % akkaV,
"com.typesafe.play" %% "play-json" % "2.4.0-M3"
)
}
And here is the app
import akka.actor.ActorSystem
import akka.http.scaladsl.Http
import akka.http.scaladsl.model.HttpRequest
import akka.stream.ActorMaterializer
import scala.concurrent.ExecutionContext.Implicits.global
object Sender {
def main(args: Array[String]): Unit = {
implicit val system = ActorSystem()
implicit val materializer = ActorMaterializer()
Http().singleRequest(HttpRequest(uri = "http://declinators.com/declinator?noun=komunikacja")) foreach {
y => println(y.entity)
println(y.entity.getContentType())
println(y.entity.contentType)
}
}
}
This prints:
HttpEntity.Strict(application/json,{"nominative":"komunikacja","genitive":"komunikacji","dative":"komunikacji","accusative":"komunikację","instrumental":"komunikacją","locative":"komunikacji","vocative":"komunikacjo"})
application/json
application/json
Here come the questions:
1. Why ResponseEntity supplies getContentType() and contentType()? They return the same thing.
2. Getting the contentyType is easy, you have two ways for doing it, but how can I get the content itself, so I can play (i.e. parse it using play) with the json!

Answer 1

You can use entity.data.toString for Binary content type, or the following code piece
data.decodeString(nb.charset.value)
Please follow the HttpEntity.Strict.toString implementation here for detail:
https://github.com/akka/akka/blob/master/akka-http-core/src/main/scala/akka/http/scaladsl/model/HttpEntity.scala#L316