如何在 Swift 中集成 Paytm 支付網關

Question

我已經檢查了所有的教程，並且在網關集成方面也做了大量的研發。 但是沒有找到集成paytm支付網關的方法。

func paymentConfiguration()
{
    var orderDict = [AnyHashable: Any]()
    orderDict["MID"] = "WorldP64425807474247"
    orderDict["CHANNEL_ID"] = "WAP"
    orderDict["INDUSTRY_TYPE_ID"] = "Retail"
    orderDict["WEBSITE"] = "worldpressplg"
    orderDict["TXN_AMOUNT"] = "1"
    orderDict["ORDER_ID"] = ViewController.generateOrderID(withPrefix: "")
    orderDict["CALLBACK_URL"] = "https://securegw.paytm.in/theia/paytmCallback?ORDER_ID=<ORDER_ID>"
    orderDict["CHECKSUMHASH"] = "w2QDRMgp1/BNdEnJEAPCIOmNgQvsi+BhpqijfM9KvFfRiPmGSt3Ddzw+oTaGCLneJwxFFq5mqTMwJXdQE2EzK4px2xruDqKZjHupz9yXev4="
    orderDict["REQUEST_TYPE"] = "DEFAULT"
    orderDict["CUST_ID"] = "1234567890"
    var order = PGOrder(params: orderDict)
}



func openPaytmController()
{
    PGServerEnvironment.selectServerDialog(view, completionHandler: {(_ type: ServerType) -> Void in
        var txnController = PGTransactionViewController.initTransaction(forOrder: order)
        if type != eServerTypeNone {
            txnController.serverType = type
            txnController.merchant = mc
            txnController.delegate = self
            self.show(txnController)
        }
    })
}

任何幫助將不勝感激。 提前致謝

Answer 1

**

PayTM 與 swift 與細節的集成

**

##下載paytm sdk## https://github.com/Paytm-Payments/Paytm_iOS_App_Kit確保動態庫和systemConfiguration.framwork 被添加到“鏈接的二進制文件和框架”中

將橋接頭文件添加到項目中

        #import "PaymentsSDK.h"

您必須為交易目的生成 CheckSumHash 密鑰 - PayTm 唯一密鑰

傳遞以下參數以生成 checkSumHash

 let params:[String: Any] = [
            "CUST_ID”:<Your Customer ID>,  // you have to generate unique customer ID (Generate random string - less than 50 length count )
            "TXN_AMOUNT":"10.00", // sample amount
              “MID": <Your merchant ID>, 
             "ORDER_ID”:<Your Order ID>, // you have to generate unique order ID  (Generate random string - less than 50 length count )
             "INDUSTRY_TYPE_ID":"Retail",   //Staging Environment  
              "CHANNEL_ID":"WAP", //Staging Environment  
              "WEBSITE":"APPSTAGING",  //Staging Environment  - Mobile
             "CALLBACK_URL":"https://securegw-stage.paytm.in/theia/paytmCallback?ORDER_ID=\(<Your Order ID>)” // This should be important one and make sure the correct order ID. 
  ]

在您的服務器中，您必須根據給定的參數和商家密鑰設置應生成 CheckSumHash 密鑰的文件（存儲在文件中；不要在您的應用程序中使用）。 那應該是您的 CHECKSUM URL 以及上述參數。 最后，我們在響應中得到 CheckSumHash

您必須提供上述參數以及 checkSumHash（您得到響應 - 請參閱：步驟 3）以模仿 PGTransactionViewCONtroller

       let params:[String: Any] = [
            "CUST_ID”:<Your Customer ID>,  // you have to generate unique customer ID (Generate random string - less than 50 length count )
            "TXN_AMOUNT":"10.00", // sample amount
              “MID": <Your merchant ID>, 
             "ORDER_ID”:<Your Order ID>, // you have to generate unique order ID  (Generate random string - less than 50 length count )
             "INDUSTRY_TYPE_ID":"Retail",   //Staging Environment  
              "CHANNEL_ID":"WAP", //Staging Environment  
              "WEBSITE":"APPSTAGING",  //Staging Environment  - Mobile
             "CALLBACK_URL":"https://securegw-stage.paytm.in/theia/paytmCallback?ORDER_ID=\(<Your Order ID>)”  // This should be important one and make sure the correct order ID. ,“CHECKSUMHASH”:<your geenrated CheckSumHash key> // which you got the response of generate CheckSumHash
]

  let order = PGOrder(params: params)

    let txnController = PGTransactionViewController(transactionFor: order)
    txnController?.serverType = eServerTypeStaging
    txnController?.merchant = PGMerchantConfiguration.default()
    txnController?.merchant.checksumGenerationURL = CheckSumGenerationURL
    txnController?.merchant.merchantID = "FlotaS90100524961231"
    txnController?.merchant.checksumValidationURL = CheckSumVerifyURL + orderID
    txnController?.loggingEnabled = true
    txnController?.merchant.website = "APPSTAGING"
    txnController?.merchant.industryID = "Retail"
    txnController?.serverType = eServerTypeStaging
    txnController?.delegate = self

    self.navigationController?.pushViewController(txnController!, animated: true)

PayTM 委托處理響應

func didSucceedTransaction(controller: PGTransactionViewController, response: [NSObject : AnyObject]) {
        print(response)
    }

    func didFinishedResponse(_ controller: PGTransactionViewController!, response responseString: String!) {
        print(responseString) // Response will be in string 
         let data = responseString.data(using: .utf8)!
    let obj = JSON(data: data)
    if obj["STATUS"].stringValue != "TXN_SUCCESS" {
       //handle what you want             
    }
     }
    }
    func didFailTransaction(_ controller: PGTransactionViewController!, error: Error!, response: [AnyHashable : Any]!) {
        print(error)

    }

    func didCancelTrasaction(_ controller: PGTransactionViewController!) {
        print("User camcelled the trasaction")
        controller.navigationController?.popViewController(animated: true)
    }

    func errorMisssingParameter(_ controller: PGTransactionViewController!, error: Error!) {
        print(error.localizedDescription)
        controller.navigationController?.popViewController(animated: true)
    }

Answer 2

試試這個代碼：

func showController(controller: PGTransactionViewController) {

    if self.navigationController != nil {
        self.navigationController?.pushViewController(controller, animated: true)
    } else {
        self.present(controller, animated: true, completion: nil)
    }
}

func removeController(controller: PGTransactionViewController) {

    if self.navigationController != nil {
        self.navigationController?.popViewController(animated: true)
    } else {
        controller.dismiss(animated: true, completion: nil)
    }
}

//Creat Payment----------------
func creatPayment(CheckSum: String) {

    let mc = PGMerchantConfiguration.default()!
    var orderDict = [String : Any]()
    orderDict["MID"] = "WorldP64425807474247";
    orderDict["ORDER_ID"] = ViewController.generateOrderID(withPrefix: "");
    orderDict["CUST_ID"] = "1234567890";
    orderDict["INDUSTRY_TYPE_ID"] = "Retail";
    orderDict["CHANNEL_ID"] = "WAP";
    orderDict["TXN_AMOUNT"] = self.FINAL_AMOUNT;
    orderDict["WEBSITE"] = "APP_STAGING";
    orderDict["CALLBACK_URL"] = "https://pguat.paytm.com/paytmchecksum/paytmCallback.jsp";
    orderDict["CHECKSUMHASH"] = CheckSum;

    let pgOrder = PGOrder(params: orderDict )
    let transaction = PGTransactionViewController.init(transactionFor: pgOrder)
    transaction!.serverType = eServerTypeStaging
    transaction!.merchant = mc
    transaction!.loggingEnabled = true
    transaction!.delegate = self
    self.showController(controller: transaction!)
}

func didFinishedResponse(_ controller: PGTransactionViewController!, response responseString: String!) {
    print(responseString)
 }

func didCancelTrasaction(_ controller: PGTransactionViewController!) {
    print("CANCELLED")
}

func errorMisssingParameter(_ controller: PGTransactionViewController!, error: Error!) {
    self.removeController(controller: controller)
    print(error)
}

您已將校驗和作為硬核提供，因此，當 paytm 解碼您的校驗和並與您的參數進行比較時，比較將失敗。 因此，您每次付款時都需要提供新的校驗和。

您需要注意的主要事情是，校驗和生成和付款設置的給定參數應該相同。 可以借助paytm提供的校驗和生成工具在后端生成校驗和

您應該在 Generate checksumApi 成功調用func creatPayment(CheckSum: String)並將校驗和提供給函數中的參數

Answer 3

在 Swift 5.0 中，請按照以下步驟操作：-

1:- 按照以下步驟在您的項目中下載和導入庫：-

1. 從以下位置下載 SDK：- https://github.com/Paytm-Payments/Paytm_iOS_App_Kit

   在 XCode 中打開您的項目，然后從文件菜單中選擇將文件添加到“您的項目”

   在剛剛解壓的目錄中選擇Paytm.framework

   確保選中“需要時復制項目”，然后在項目設置的“構建階段”選項卡中的“鏈接二進制與庫”下單擊“添加”，添加 SystemConfiguration.framework

   檢查 PaytmSDK.framework 是否添加到“Link Binary With Libraries”和“Embedded Binaries”中。 如果沒有，請單擊加號圖標添加。

將 PaytmSDK 導入 ViewController

 import PaymentSDK

生成校驗和哈希

防止篡改的安全參數。 使用 Paytm 提供的服務器端校驗和實用程序生成。 商家必須確保這總是在服務器上生成。 生成校驗和哈希的實用程序可用

在您的支付視圖控制器上添加代碼以執行支付流程

     var txnController = PGTransactionViewController()
     var serv = PGServerEnvironment()
     var params = [String:String]()
     var order_ID:String?
     var cust_ID:String?


   func beginPayment() {
    serv = serv.createStagingEnvironment()
    let type :ServerType = .eServerTypeStaging
    let order = PGOrder(orderID: "", customerID: "", amount: "", eMail: "", mobile: "")
    order.params = ["MID": "rxazcv89315285244163",
        "ORDER_ID": "order1",
        "CUST_ID": "cust123",
        "MOBILE_NO": "7777777777",
        "EMAIL": "username@emailprovider.com",
        "CHANNEL_ID": "WAP",
        "WEBSITE": "WEBSTAGING",
        "TXN_AMOUNT": "100.12",
        "INDUSTRY_TYPE_ID": "Retail",
        "CHECKSUMHASH": "oCDBVF+hvVb68JvzbKI40TOtcxlNjMdixi9FnRSh80Ub7XfjvgNr9NrfrOCPLmt65UhStCkrDnlYkclz1qE0uBMOrmuKLGlybuErulbLYSQ=",
        "CALLBACK_URL": "https://securegw-stage.paytm.in/theia/paytmCallback?ORDER_ID=order1"]
    self.txnController =  self.txnController.initTransaction(for: order) as! PGTransactionViewController
    self.txnController.title = "Paytm Payments"
    self.txnController.setLoggingEnabled(true)
    if(type != ServerType.eServerTypeNone) {
        self.txnController.serverType = type;
    } else {
        return
    }
    self.txnController.merchant = PGMerchantConfiguration.defaultConfiguration()
    self.txnController.delegate = self
    self.navigationController?.pushViewController(self.txnController, animated: true)
 }

更改“CHECKSUMHASH”：來自 API 的參數中的值

    order.params["CHECKSUMHASH"] = checkSum // API checkSum value

確認“PGTransactionDelegate”的協議委托以處理錯誤和成功響應

要處理支付完成時的成功/錯誤，請實現“PGTransactionDelegate”的“didFinishedResponse”、“didCancelTrasaction”、“errorMisssingParameter”方法。 下面提供的代碼片段：-

extension PaymentViewController : PGTransactionDelegate {
//this function triggers when transaction gets finished
func didFinishedResponse(_ controller: PGTransactionViewController, response responseString: String) {
    let msg : String = responseString
    var titlemsg : String = ""
    if let data = responseString.data(using: String.Encoding.utf8) {
        do {
            if let jsonresponse = try JSONSerialization.jsonObject(with: data, options: .mutableContainers) as? [String:Any] , jsonresponse.count > 0{
                titlemsg = jsonresponse["STATUS"] as? String ?? ""
            }
        } catch {
            debugLog("Something went wrong")
        }
    }
    let actionSheetController: UIAlertController = UIAlertController(title: titlemsg , message: msg, preferredStyle: .alert)
    let cancelAction : UIAlertAction = UIAlertAction(title: "OK", style: .cancel) {
        action -> Void in
        controller.navigationController?.popViewController(animated: true)
    }
    actionSheetController.addAction(cancelAction)
    self.present(actionSheetController, animated: true, completion: nil)
}
//this function triggers when transaction gets cancelled
func didCancelTrasaction(_ controller : PGTransactionViewController) {
    controller.navigationController?.popViewController(animated: true)
}
//Called when a required parameter is missing.
func errorMisssingParameter(_ controller : PGTransactionViewController, error : NSError?) {
    controller.navigationController?.popViewController(animated: true)
  }
}