Scala中Json解析String，获得多级key

代码块

导入包

import scala.util.parsing.json._

def main(args: Array[String]): Unit = {

    def regJson(json:Option[Any]) = json match {
      case Some(map: Map[String, Any]) => map
//      case None => "erro"
//      case other => "Unknow data structure : " + other
    }
    val str = "{\"host\":\"td_test\",\"ts\":1486979192345,\"device\":{\"tid\":\"a123456\",\"os\":\"android\",\"sdk\":\"1.0.3\"},\"time\":1501469230058}"
    val jsonS = JSON.parseFull(str)
    val first = regJson(jsonS)
    // 获取一级key
    println(first.get("host"))
    // 获取二级key
    val dev = first.get("device")
    println(dev)
    val sec = regJson(dev)
    println(sec.get("tid").toString.replace("Some(","").replace(")",""))
  }

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运行结果

Some(td_test) 
Some(Map(tid -> a123456, os -> android, sdk -> 1.0.3)) 
a123456