解析自定义json

如何解决解析自定义json

{
  "Graphicaldata": {
    "2020-02-05": [
      {
        "id": 2,"pickup_date": "2020-02-05","waste_stream_name": "Trash","quantityinkg": "441","quantityingms": "00"
      }
    ],"2020-02-11": [
      {
        "id": 4,"pickup_date": "2020-02-11","waste_stream_name": "biodegradable","quantityinkg": "","quantityingms": ""
      },{
        "id": 5,"waste_stream_name": "biohazard","quantityinkg": "139","quantityingms": "129"
      },"quantityingms": "129"
      }
    ],"2020-02-19": [
      {
        "id": 6,"pickup_date": "2020-02-19","waste_stream_name": "Waste Garbase","quantityinkg": "248","quantityingms": "864"
      },{
        "id": 6,"quantityingms": "864"
      }
    ],"2020-02-17": [
      {
        "id": 198,"pickup_date": "2020-02-17","waste_stream_name": "construction","quantityingms": ""
      }
    ],"2020-02-12": [
      {
        "id": 257,"pickup_date": "2020-02-12","quantityingms": ""
      }
    ]
  }
}

这是一个带有自定义键列表的 json。

======================================

@JsonIgnoreProperties(ignoreUnkNown = true)
class GraphItem {
    val pickupDate: String? = null
    val wasteStreamName: String? = null
    val quantityinkg: String? = null
    val id :Int ? =null
    val quantityingms: String? = null
}

这是我的物品类别

============================

@JsonIgnoreProperties(ignoreUnkNown = true)
class PickupHistoryResponse {
    @JsonProperty("Response")
    var response: List<ResponseItem>? = null

    @JsonProperty("status")
    var status: Boolean? = null

    @JsonProperty("Graphicaldata")
    private val graphicalData: HashMap<String,List<GraphItem>>? = null
}

这是父类

但是我得到的图形数据为空，我做错了什么吗？，我在 get object observable 中使用快速网络我正在传递 PickupHistoryResponse 任何人都可以帮忙吗？