Deserialize NaN, Infinity using Json4s

Question

Need to convert NaN in Json(as it is not JSON) to Double in Json4s without using jackson.

For example, I am having following JSON:

{ "a": NaN }

I need to parse above json using JSON4S.

Can we write any deserializer if possible for this?

Answer 1

You can achieve this from the version 3.6.7 :

import org.json4s._
import org.json4s.native.JsonMethods._

def main(args: Array[String]): Unit = {
  val json = """{"a": "NaN"}"""
  println(parse(json))
 // Displays
 // JObject(List((a,JString(NaN))))
}