需要帮助解码包含数组的 Json

Question

我需要做以下事情：定义两个 Swift classes 来解码 JSON 字符串

解码JSON字符串得到两个classes

的对象

这是我要解码的 JSON :

{“status":200,"holidays":[{"name":"Thanksgiving","date":"2017-10-09","observed":"2017-10-09","public":false}]}

我已经尝试创建两个 classes 并且在主 class

中调用 class 时我得到的结果是什么

class HolidayItems : Decodable {

    let name : String?
    let date : String?
    let observed: String?
    let `public` : Bool?


    private enum CodingKeys: String, CodingKey {

        case name
        case date
        case observed
        case `public`

    }

    required init(from decoder:Decoder) throws {
        let container = try decoder.container(keyedBy: CodingKeys.self)
        name = try container.decode(String.self, forKey: .name)
        date = try container.decode(String.self, forKey: .date)
        observed = try container.decode(String.self, forKey: .observed)
        `public`  = try container.decode(Bool.self, forKey: .`public`)
    }

    } // HolidayItems

    class HolidayAPI: Decodable {

    let status: HolidayItems

    // let holiday :[HolidayItems]


    func getHolidayName() -> String {
        return status.name ?? "no advice, server problem"
    }
    func getAdviceNo() -> String {
        return status.date ?? ""
    }
    private enum CodingKeys: String, CodingKey {
        case status
        case holiday = "items"
    }

    required init(from decoder:Decoder) throws {
        let container = try decoder.container(keyedBy: CodingKeys.self)
        status = try container.decode(HolidayItems.self, forKey: .status)
      //  holiday = try container.decode(HolidayItems.self, forKey: .holiday)

    }
}

这是我应该得到的结果：

Optional("Thanksgiving") Optional("2017-10-09")

我在 return

中一无所获

Answer 1

您的响应是在根级别上，只是 status 类型 Int 的对象和另一个对象的一个数组

注意

您不必实施自定义 CodingKey
您不需要自定义 init 和 Decoder
您的模型可以 struct
您可以将 HolidayItems 重命名为 Holiday

struct HolidayAPI: Decodable {
    let status: Int
    let holidays: [Holiday]
}

struct Holiday: Decodable {
    let name, date, observed: String
    let `public`: Bool
}

那么当你需要获取某个节日道具时，获取holidays

的某个元素即可

decodedResponse.holidays[0].name

需要帮助解码包含数组的 Json

Need help decoding Json that contains an array

json

decode

swift