Question

我正在尝试通过网络解析JSON数据。在下面，您可以看到魔术发生的地方。

func getBookingsForDate(date: String, completionHandler: @escaping ([String:String]) -> Void ){

struct bookings: Codable {

    var bookieName : String
    var bookieNumber: String
    var booked: String
    var bookingTime: String

    private enum Codingkeys: String, CodingKey{

        case bookieName
        case bookieNumber
        case booked
        case bookingTime
    }
}

let params = ["date":date]

let urlString = "http://mscissorss.pythonanywhere.com/getBookings/"
Alamofire.request(urlString, method: .get, parameters: params).responseJSON {
    response in
    switch response.result {
    case .success(let JSON):

        let decoder = JSONDecoder()
        guard let _ = response.data else{
            return
        }
        do {
            let loginDetails = try decoder.decode(bookings.self, from: response.data!)
            print(loginDetails)
        } catch let err{
            print(err)
        }

        //let bookings = JSON as! NSDictionary
        //completionHandler(JSON)
        /*
        do {
            let decoder = JSONDecoder()
            let gitData = try decoder.decode(bookings.self, from: JSON)
            print(gitData.bookieName)

        } catch let err {
            print("Err", err)
        }
        */
        break
    case .failure(let error):
        print(error)
    }
}
}

给出代码，我收到以下错误消息：

keyNotFound(CodingKeys(stringValue: "bookieName", intValue: nil), Swift.DecodingError.Context(codingPath: [], debugDescription: "No value associated with key CodingKeys(stringValue: \"bookieName\", intValue: nil) (\"bookieName\").", underlyingError: nil))

我得到的JSON响应如下所示：

{
    0 =     {
        booked = false;
        bookieName = "";
        bookieNumber = "";
        bookingTime = "10:00";
    };
    1 =     {
        booked = false;
        bookieName = "";
        bookieNumber = "";
        bookingTime = "10:30";
    };
    10 =     {
        booked = false;
        bookieName = "";
        bookieNumber = "";
        bookingTime = "15:00";
    };
    11 =     {
        booked = false;
        bookieName = "";
        bookieNumber = "";
        bookingTime = "15:30";
    };
    12 =     {
        booked = false;
        bookieName = "";
        bookieNumber = "";
        bookingTime = "16:00";
    };
    13 =     {
        booked = false;
        bookieName = "";
        bookieNumber = "";
        bookingTime = "16:30";
    };
    14 =     {
        booked = false;
        bookieName = "";
        bookieNumber = "";
        bookingTime = "17:00";
    };
    15 =     {
        booked = false;
        bookieName = "";
        bookieNumber = "";
        bookingTime = "17:30";
    };
    16 =     {
        booked = false;
        bookieName = "";
        bookieNumber = "";
        bookingTime = "18:00";
    };
    2 =     {
        booked = false;
        bookieName = "";
        bookieNumber = "";
        bookingTime = "11:00";
    };
}

这是我第一次解码，因此，如果您有答案，请尝试解释一下为什么我需要进行所需的更改。

更新

在将代码更改为@sh_khan和@vadian建议的代码后，它可以进行解析，但是我仍然在我的解析对象内部收到此错误：

["1": MagicS.(unknown context at 0x106932738).bookings(bookieName: "", bookieNumber: "", booked: "false", bookingTime: "10:30"), 
"0": MagicS.(unknown context at 0x106932738).bookings(bookieName: "", bookieNumber: "", booked: "false", bookingTime: "10:00"),

此外，如果我希望能够访问单个值，请说第一个键为"0" -> bookieName的项目，我将如何使用loginDetails来做到这一点

Answer 1

booked是Bool，如果您不重命名密钥，则不需要private enum Codingkeys

struct Booking: Codable {

   let bookieName : String
   let bookieNumber: String
   let booked: Bool
   let bookingTime: String

}

像这样二次解码

let loginDetails = try decoder.decode([String:Booking].self, from: response.data!)

Answer 2

根对象是具有String键和Bookings值的字典-请使用开头的大写字母命名结构。

所以你必须解码

let loginDetails = try decoder.decode([String:Bookings].self, from: response.data!)

解码JSON时出错-keyNotFound（CodingKeys

2 个答案: