Scala: Parse JSON directly into a case class

Question

Given a string of JSON, and a case class that corresponds to it, what\'s a simple way to parse the JSON into the case class? There are many libraries available, but it seem

Answer 1

Use spray-json as it is small.

import spray.json._
import DefaultJsonProtocol._


val json = """{"one" : "1", "two" : "2", "three" : "3"}""".parseJson

case class Numbers(one: String, two: String, three: String)

object MyJsonProtocol extends DefaultJsonProtocol {
  implicit val numbersFormat = jsonFormat3(Numbers)

}

import MyJsonProtocol._

val converted = json.convertTo[Numbers]

Download spray-json into sbt using this build.sbt:

lazy val root = (project in file(".")). settings( name := "jsonExample", libraryDependencies += "io.spray" %% "spray-json" % "1.3.2" )