数组解析中的JSON数组，SWIFTYJson

我一直在学习SWIFT应用程序中的JSON解析。到目前为止，我一直在使用简单的免费API，没有问题，应用程序按设计工作。但是现在我正在调用一个返回数组内部数组的API。我已经按照说明阅读并准备了变量来访问元素，但是SWIFT仍然看不到此返回的JSON中的任何数据。我已经为此苦苦挣扎了2天，更改了所有可以在网上找到和想到的内容，但我的默认变量仍然没有被JSON数据覆盖。使用pod SWIFTYJson。

JSON部分提取：

    {
  "list" : [
    {
      "main" : {
        "grnd_level" : 984.67999999999995,
        "temp_min" : 283.30000000000001,
        "temp_max" : 284.54599999999999,
        "temp" : 283.30000000000001,
        "sea_level" : 1022.5,
        "pressure" : 984.67999999999995,
        "humidity" : 88,
        "temp_kf" : -1.25
      },
      "clouds" : {
        "all" : 0
      },
      "weather" : [
        {
          "main" : "Clear",
          "icon" : "01n",
          "description" : "clear sky",
          "id" : 800
        }
      ],

处理它的代码：

func getWeatherData(url: String, parameters: [String : String]){
    //make http request and handle the JSON response
    print("\(url)\(parameters)")
    Alamofire.request(url, method: .get, parameters: parameters).responseJSON {
        response in //in means you are inside a closure (function inside a function)
        if response.result.isSuccess {
            print("Successfully got the weather data!")

            let weatherJSON : JSON = JSON(response.result.value!) //saving the JSON response to a constant weathrJSON  . We are using ! to self unwrap the value.
            self.updateWeatherData(json: weatherJSON) //func to parse our json from API. Self tells the compiler to look for the method inside the current class

            print(weatherJSON)
        } else {
            self.cityName.text = "Unable to fetch weather - please check active connection."
        }

    }
}

func updateWeatherData(json: JSON) {
            (...)
             //parse JSON for weather forecast day 1
            weatherDataModel.weatherTest1 = json["list"][0]["weather"][0]["id"].intValue

            //parse JSON for weather forecast day 2
            weatherDataModel.weatherTest2 = json["list"][8]["weather"][0]["id"].intValue

            //parse JSON for weather forecast day 3
            weatherDataModel.weatherTest3 = json["list"][16]["weather"][0]["id"].intValue

            print("TEST variable 1: \(weatherDataModel.weatherTest1)")
            print("TEST variable 2: \(weatherDataModel.weatherTest2)")
            print("TEST variable 3: \(weatherDataModel.weatherTest3)")

打印到控制台的变量与默认值保持不变：

TEST variable 1: 0
TEST variable 2: 0
TEST variable 3: 0