使用Scala如何设计一个通用的方法实现从这个json { "resultCode": "0", "resultMsg": "处理成功", "tacheGroup": [{ "actualTacheInfo": [{ "number": "830", "tacheName": "三层VPN调度自动", "tacheCode": "MPLS-DIS-AUTO", "tacheId": "1693183", "caller": "202104002",...-DPDK中文网

在Scala中，你可以使用递归的方式来实现将嵌套结构的JSON转换为扁平化的形式。以下是一个通用的方法示例：

import scala.collection.mutable

def flattenJson(json: Map[String, Any], prefix: String = ""): Map[String, Any] = {
  val result = mutable.Map[String, Any]()

  def flatten(value: Any, keyPrefix: String): Unit = value match {
    case mapValue: Map[String, Any] =>
      mapValue.foreach { case (k, v) => flatten(v, s"$keyPrefix$k.") }
    case listValue: Seq[Map[String, Any]] =>
      listValue.zipWithIndex.foreach { case (item, index) => flatten(item, s"$keyPrefix$index.") }
    case _ =>
      result.put(keyPrefix.dropRight(1), value)
  }

  json.foreach { case (key, value) => flatten(value, s"$prefix$key.") }

  result.toMap
}

val json = """
{
	"resultCode": "0",
	"resultMsg": "处理成功",
	"tacheGroup": [{
		"actualTacheInfo": [{
			"number": "830",
			"tacheName": "三层VPN调度自动",
			"tacheCode": "MPLS-DIS-AUTO",
			"tacheId": "1693183",
			"caller": "202104002",
			"responder": "202104002",
			"tacheStatus": "0",
			"areaId": "",
			"isAlarm": "2008045002",
			"tacheType": "0",
			"startTime": "2024-06-21 10:02:45",
			"endTime": "2024-06-21 10:02:49",
			"errorMsg": "",
			"errorMsgCode": "",
			"errorHandleSysCode": "",
			"errorRpbHandleSysCode": "",
			"errorRpbHandleSysName": "",
			"provincialContacts": "",
			"provincialNum": "",
			"provincialMail": "",
			"child": []
		}]
	}]
}
"""

// 解析JSON
import scala.util.parsing.json.JSON

val parsedJson = JSON.parseFull(json)

parsedJson match {
  case Some(map: Map[String, Any]) =>
    // 转换为扁平化的形式
    val flattenedJson = flattenJson(map)

    // 打印结果
    flattenedJson.foreach { case (key, value) => println(s"$key -> $value") }

  case _ =>
    println("Invalid JSON format")
}

在这个例子中，首先将JSON字符串解析为一个Map[String, Any]对象，然后使用flattenJson方法将其转换为扁平化的形式。最后，通过遍历输出每个键值对来打印结果。请注意，你需要导入scala.util.parsing.json.JSON类来解析JSON字符串。

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