spray-json Support

The SprayJsonSupport trait provides a Marshaller and Unmarshaller for every type T that an implicit spray.json.RootJsonReader and/or spray.json.RootJsonWriter (respectively) is available for.

Just mix in spray.httpx.SprayJsonSupport or import spray.httpx.SprayJsonSupport._.

For example:

import spray.json.DefaultJsonProtocol
import spray.httpx.unmarshalling._
import spray.httpx.marshalling._
import spray.http._
import HttpCharsets._
import MediaTypes._

case class Person(name: String, firstName: String, age: Int)

object MyJsonProtocol extends DefaultJsonProtocol {
  implicit val PersonFormat = jsonFormat3(Person)

import MyJsonProtocol._
import spray.httpx.SprayJsonSupport._
import spray.util._

val bob = Person("Bob", "Parr", 32)
val body = HttpEntity(
  contentType = ContentType(`application/json`, `UTF-8`),
  string =
       |  "name": "Bob",
       |  "firstName": "Parr",
       |  "age": 32

marshal(bob) === Right(body)
body.as[Person] === Right(bob)

If you bring an implicit spray.json.JsonPrinter into scope the marshaller will use it. Otherwise it uses the default spray.json.PrettyPrinter.


Since spray-httpx only comes with an optional dependency on spray-json you still have to add it to your project yourself. Check the spray-json documentation for information on how to do this.