我需要使用纯JSON返回

Question

我需要以jSON格式而不是Object返回的结构。我该怎么办？

对象

 struct ApplePayTransactionResult: Codable {
 struct TransactionResponse: Codable {
     let authCode: Int?
     let avsResponseCode: String?
     let creditCardBin: Int?
     let creditCardCountry: String?
     let creditCardLast4: Int?
     let creditCardScheme: String?
     let cvvResponseCode: String?
     ...
 }
let transactionResponse: TransactionResponse?

编码键

enum CodingKeys: String, CodingKey {
    case transactionResponse = "transaction-response"
}

    static func get(json: Any?) -> ApplePayTransactionResult? {
       do {
          if let data = json {

             let data_ = try JSONSerialization.data(withJSONObject: data, options: []);
             let decoder = JSONDecoder()
             let applePayTransactionResult = try decoder.decode(ApplePayTransactionResult.self, from: data_)

             return applePayTransactionResult
         }else{
             return nil
         }

错误报告

     }catch let err {
         print("Err - Apple Pay Transaction Result - get", err)
         return nil
     }
  }
}

此处返回的格式为“对象”

"{transaction-response = \ {authCode = 123456; avsResponseCode = YYY; creditCardBin = 518041; creditCardCountry = US; creditCardLast4 = 1433; creditCardScheme = Mastercard; cvvResponseCode = M; etc... ;};};

，并且需要返回纯JSON格式

 {"transaction-response":{"authCode":"123456","avsResponseCode":"YYY","creditCardBin":"518041","creditCardCountry":"US","creditCardLast4":"1433","creditCardScheme":"Mastercard","cvvResponseCode":"M", etc ...}}