Swift 4 JSON可编码ID作为键

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如何解决Swift 4 JSON可编码ID作为键？

请检查 ：

struct ResponseData: Codable {
    struct Inner : Codable {
        var animalID   : String
        var animalname : String

        private enum CodingKeys : String, CodingKey {
            case animalID     = "animalID"
            case animalname   = "animalname"
        }
    }

    var Status: String
    var foundRows: Int
    var data : [String: Inner]

    private enum CodingKeys: String, CodingKey {
        CASE status = "status"
        case foundRows = "foundRows"
        case data = "data"
    }
}

let Json = """
    {
        "status": "ok",
        "messages": {
            "generalmessages": ["dsfsdf"],
            "recordmessages": ["sdfsdf"]
        },
        "foundRows": 2515989,
        "data": {
            "181": {
                "animalID": "181",
                "animalname": "SophIE"
            },
            "182": {
                "animalID": "182",
                "animalname": "SophIE"
            }
        }
    }
"""
let data = Json.data(using: .utf8)!
let decoder = JsONDecoder()

do {
    let JsonData = try decoder.decode(ResponseData.self, from: data)
    for (key, value) in JsonData.data {
        print(key)
        print(value.animalID)
        print(value.animalName)
    }
}
catch {
    print("error:\(error)")
}

解决方法

{
 "status": "ok","messages": {
   "generalmessages": [],"recordmessages": []
 },"foundRows": 2515989,"data": {
   "181": {
     "animalID": "181","animalName": "Sophie","animalBreed": "Domestic Short Hair / Domestic Short Hair / Mixed (short coat)","animalGeneralAge": "Adult","animalSex": "Female","animalPriMaryBreed": "Domestic Short Hair","animalupdatedDate": "6/26/2015 2:00 PM","animalOrgID": "12","animalLOCATIOnDistance": ""

struct messages: Codable {
    var generalmessages: [String]
    var recordmessages: [String]
}

struct data: Codable {
    var
}

struct Cat: Codable {
    var Status: String
    var messages: messages
    var foundRows: Int
    //var 181: [data] //what do I place here
}

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