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scala 自带json_Scala解析Json格式

韩夕
2023-12-01

import scala.util.parsing.json._ //使用scala原生包

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

import com.google.gson.{JsonObject, JsonParser} //使用Gson包

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

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