Braintree node.js w/iOS 9 Swift 2.1 - 客户端令牌错误

Posted 2023-02-22

【中文标题】Braintree node.js w/iOS 9 Swift 2.1 - 客户端令牌错误

【英文标题】：Braintree node.js w/ iOS 9 Swift 2.1 - client token error

【发布时间】：2016-06-11 21:05:19

【问题描述】：

我正在尝试设置一个在 node.js 上运行的相对简单的 Braintree 服务器，我的客户端是用适用于 ios 9 的 Swift 2.1 编写的，虽然我能够记录客户端令牌，但我收到以下错误：

[BraintreeSDK] ERROR Unsupported client token version. Please ensure your server is generating a valid Braintree ClientToken with a server-side SDK that is compatible with this version of Braintree iOS.

以下是我的服务器代码（改编自 BraintreeDev 存储库）：

'use strict';

var express = require('express');
var app = express();

var braintree = require('braintree');

var bodyParser = require('body-parser');
var parseUrlEnconded = bodyParser.urlencoded(
  extended: false
);

var gateway = braintree.connect(
  environment: braintree.Environment.Sandbox,
  merchantId: 'xxxxxxxxxxxxx',
  publicKey: 'xxxxxxxxxxxxxxx',
  privateKey: 'xxxxxxxxxxxxxxxxxxxxxxx'
);

app.use(express.static('public'));

app.set('views', __dirname + '/views');
app.set('view engine', 'ejs');

// Creates a new token and returns it in the response.
app.get('/token', function (req, res) 
  gateway.clientToken.generate(, function (error, response) 
    res.json(response);
  );
);

app.post('/payment', function (req, res) 
  var sale = 
    amount: "10",
    payment_method_nonce: req.param('payment_method_nonce')
  ;

  gateway.transaction.sale(sale, function (error, response) 
    if (!error && response.success) 
      res.json(response);
     else 
      // do something else
    
  );
);


app.listen(process.env.PORT || 5000)

module.exports = app;

这是我的 iOS 代码：

class BaseViewController: UIViewController 

    var braintreeClient: BTAPIClient?

    override func viewDidLoad() 
        super.viewDidLoad()

        let clientTokenURL = NSURL(string: "https://my-heroku-app.herokuapp.com/token")!
        let clientTokenRequest = NSMutableURLRequest(URL: clientTokenURL)
        clientTokenRequest.setValue("text/plain", forHTTPHeaderField: "Accept")

        NSURLSession.sharedSession().dataTaskWithRequest(clientTokenRequest)  (data, response, error) -> Void in
            guard let data = data else 
                return
            

            let clientToken = String(data: data, encoding: NSUTF8StringEncoding)
            print("Client Token: \(clientToken)")
            self.braintreeClient = BTAPIClient(authorization: clientToken!)
            print(response?.description)

        .resume()
    
...

这似乎应该是非常直截了当的事情，但我无法理解为什么会出现此错误。

编辑：我正在使用最新版本的 Braintree SDK for iOS 和最新版本的 Braintree node.js 包。

【参考方案1】：

_{全面披露：我在 Braintree 工作。如果您还有任何问题，请随时联系我们的support 团队。}

您似乎正在序列化来自gateway.clientToken.generate 的整个响应并将其传递给BTAPIClient。您应该从响应对象中删除 clientToken，并且只将 clientToken 字符串值传递给 BTAPIClient。

app.get('/token', function (req, res) 
  gateway.clientToken.generate(, function (error, response) 
    res.json(response.clientToken);
  );
);

有关详细信息，请参阅clientToken.generate 文档。

【讨论】：

不幸的是，我现在收到以下错误：[BraintreeSDK] ERROR Invalid client token. Please ensure your server is generating a valid Braintree ClientToken.

还有这个错误：ERROR BTClient could not initialize because the provided clientToken was invalid

请联系我们的support team 以获得更多帮助来解决您的问题。

【参考方案2】：

上面的答案解决了我的服务器端代码问题。但是，我仍然在 iOS 应用程序中遇到错误：

ERROR BTClient could not initialize because the provided clientToken was invalid

我现在用的是Alamofire，我的功能如下：

associatedType ClientTokenResult = (clientToken: String?) -> ()

func fetchToken(completion: ClientTokenResult) 
    let parameters = [String: AnyObject]()
    Alamofire.request(Router.Get("api/token", parameters))
        .validate()
        .response  (request, response, data, error) -> Void in
            guard let data = data else 
                return
            

            if let error = error 
                print("Error: \(error.localizedDescription)")
                completion(clientToken: nil)
             else 
                let clientToken = String(data: data, encoding: NSUTF8StringEncoding)!

                // NOTE: This shouldn't be necessary, but as of right now the server is returning the token
                // with quotation marks.
                let strippedClientToken = clientToken.stringByReplacingOccurrencesOfString("\"",
                    withString: "")

                print("Client Token: \(strippedClientToken)")
                print(response?.debugDescription)

                completion(clientToken: strippedClientToken)
            
    

更新：您可以在我的 NOTE 评论中看到问题是我的服务器正在返回带有引号的令牌（我还没有弄清楚为什么）所以我不得不“从令牌中剥离它们”。现在一切正常。