递归拉平 jsonObject里的数据并且展示成Map
此为scala程序
def parseJsonByJSONObject(json:JSONObject,fatherKey:String =""):Map[String,String] = {
val result =new mutable.HashMap[String,String]()
import scala.collection.JavaConverters._
val fatherKeys: mutable.Set[String] = json.keySet().asScala
val resultSet = fatherKeys.map(key =>{
val value = json.get(key)
valuematch {
case value: JSONObject =>
val map =parseJsonByJSONObject(value,getSonKey(fatherKey,key))
result ++= map
case value: JSONArray =>
val map =parseJsonByJSONArray(value,getSonKey(fatherKey,key))
result ++= map
case _ =>
result.put(getSonKey(fatherKey,key), value.toString)
}
})
result.toMap
}
//得到子key
def getSonKey(fatherKey:String,key:String):String = {
var sonKey:String =""
if (fatherKey !="") {
if (key.startsWith("(") && key.endsWith(")"))
sonKey = fatherKey + key
else
sonKey = fatherKey +"." + key
}
else
sonKey = key
sonKey
}
def parseJsonByJSONArray(json:JSONArray,fatherKey:String ="") = {
val result =new mutable.HashMap[String,String]()
val resultSet =new ListBuffer[AnyRef]()
for (a <-0 until json.length()){
resultSet.append(json.get(a))
}
var count:Int = -1
resultSet.foreach {case value =>
count +=1
valuematch{
case value: JSONObject =>
val sonKey =getSonKey(fatherKey,s"(${count})")
val r:Map[String,String] =parseJsonByJSONObject(value, sonKey)
result ++= r
case _ =>throw new Exception("JSONArray内部不是JSONObject类型,不符合规则")
}
}
result.toMap
}
示例:
结果:
这里面的小括号(0),(1) 等,代表的是 JSONArray的层级结构
