具體原因還有待分析。

object Main {
    def main(args: Array[String]): Unit = {
        val str = "{\"formatted_address\":\"內蒙古自治區巴彥淖爾市杭錦後旗陝壩鎮光榮信用社(五烏線)\",\"addressComponent\":{\"businessAreas\":[[]],\"country\":\"中國\",\"city\":\"巴彥淖爾市\",\"adcode\":\"150826\",\"streetNumber\":{\"number\":[],\"distance\":[],\"street\":[],\"direction\":[]},\"building\":{\"name\":[],\"type\":[]},\"province\":\"內蒙古自治區\",\"citycode\":\"0478\",\"towncode\":\"150826100000\",\"district\":\"杭錦後旗\",\"neighborhood\":{\"name\":[],\"type\":[]},\"township\":\"陝壩鎮\"}}"
        val jSONObject = JSON.parseObject(str)
        println(jSONObject)
        val `object` = jSONObject.put("gd_id", "0102020101202010201")
        println(jSONObject.toJSONString)
        println(`object`)
        println(jSONObject)
        val gd_id = "hello"
        println(jSONObject.toJSONString.replaceAll("}}", "}" + "\"gd_id\": \"" + gd_id + "\"}"))
        val map = new java.util.HashMap[String, String]()
        println(map.put("hello", "hello"))
    }
}