Scala解析Json格式

Scala解析Json格式

代码块

• Scala原生包

　　　　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(")",""))
   }

运行结果

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

• GSON包

　　　　导入包　　　　

　　　　import com.google.gson.{JsonObject, JsonParser}

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

     gson("{\"host\":\"td_test\",\"ts\":1486979192345,\"device\":{\"tid\":\"a123456\",\"os\":\"android\",\"sdk\":\"1.0.3\"},\"time\":1501469230058}")

   }

   def gson(str: String) ={
     val json = new JsonParser()
     val obj = json.parse(str).asInstanceOf[JsonObject]
     println(obj.get("device"))
     println(obj.get("ts"))
   }

运行结果：

{"tid":"a123456","os":"android","sdk":"1.0.3"}
1486979192345