Parsing JSON and iterating through the object in Scala

Question

Given, for example, the following JSON string:

[{"id": "user1", "password": "ps1"},{"id": "user2", "password": "ps2"},{"id": "user3", "password": "ps3"}]

What's the best and most optimized way to parse it in Scala and iterate through every result and analise it properly?

Thank you.

Answer 1

with Lift-JSON:

import net.liftweb.json.JsonParser._
import net.liftweb.json.DefaultFormats

val jsonString = //your jsonString....

case class Credential (id:String, password:String)

implicit val formats = DefaultFormats
val credentials = parse(jsonString).extract[List[Credential]]

credentials foreach { cred => println(cred.id + " " + cred.password) } 

everything is explain here : http://www.assembla.com/spaces/liftweb/wiki/JSON_Support