<dependency>
      <groupId>net.minidev</groupId>
      <artifactId>json-smart</artifactId>
      <version>2.3</version>
    </dependency>

package Test

import java.util

import net.minidev.json.JSONObject
import net.minidev.json.parser.JSONParser

import scala.collection.JavaConversions._
import scala.collection.mutable
import scala.util.parsing.json.JSON

/**
 * Created by zhanghuayan on 2017/3/30.
 */
object Test {
 def main(args: Array[String]): Unit = {

  val str2 = "{\"name\":\"jeemy\",\"age\":25,\"phone\":\"18810919225\"}"
  val jsonParser = new JSONParser()

  val jsonObj: JSONObject = jsonParser.parse(str2).asInstanceOf[JSONObject]
  val name = jsonObj.get("name").toString
  println(name)

  val jsonKey = jsonObj.keySet()
  val iter = jsonKey.iterator

  while (iter.hasNext) {
   val instance = iter.next()
   val value = jsonObj.get(instance).toString
   println("key: " + instance + " value:" + value)
  }

 }
}