Parsing JSON in to a Map with Lift JSON

JsonToMap.scala

import net.liftweb.json._
val jsonStr: String = """{"key1":"value1","key2":1}"""
val jsonJVal: JValue = parse(jsonStr)
val jsonMap: Map[String,Any] = jsonJVal.values.asInstanceOf[Map[String,Any]]
for ((key,value) <- jsonMap) {
    println("key = " + key + ", value = " + value.toString)
}
println("Key 1's value is " + jsonMap("key1"))