我正在将PayTM集成到我的ios (Swift)应用程序中，我面临标题为“ Transaction Failed ”且消息为“ MissingKeys ”的问题
我使用了以下代码
merchant = PGMerchantConfiguration.default()!
merchant.checksumGenerationURL = "http://getlook.in/cgi-bin/checksum_generate.cgi"
merchant.checksumValidationURL = "http://getlook.in/cgi-bin/checksum_validate.cgi"
merchant.clientSSLCertPath = nil
merchant.clientSSLCertPassword = nil
merchant.merchantID = "rriver57770575448885"
merchant.website = "APP_STAGING"
merchant.industryID = "Retail"
merchant.channelID = "WAP"
var orderDict = [String: String]()
orderDict["MID"] = "rriver57770575448885" // Merchant ID
orderDict["CHANNEL_ID"] = "WAP" // Channel Id
orderDict["INDUSTRY_TYPE_ID"] = "Retail" // Industry Type
orderDict["WEBSITE"] = "APP_STAGING"
orderDict["TXN_AMOUNT"] = "10"; // amount to charge // mandatory
orderDict["ORDER_ID"] = "\(Date().timeIntervalSince1970)";//change order id every time on new transaction
orderDict["REQUEST_TYPE"] = "DEFAULT";// remain same
orderDict["CUST_ID"] = "123456789027"; // change acc. to your database user/customers
orderDict["MOBILE_NO"] = "8798987874";// optional
orderDict["EMAIL"] = "test@paytm.com"; //optional
let pgOrder = PGOrder(params: orderDict)
let transaction = PGTransactionViewController.init(transactionFor: pgOrder)
transaction?.serverType = eServerTypeProduction
transaction?.merchant = merchant
transaction?.loggingEnabled = true
transaction?.delegate = self
self.present(transaction!, animated: true, completion: nil)
请帮忙！