Question

我正在尝试在我的iOS应用中设置Twilio可编程聊天，当我尝试获取访问令牌时，它返回Nil。我正在使用swift示例应用程序中提供的相同函数调用。

这是尝试获取字典

中存在的访问令牌的函数

func fetchToken(params:[String:String], completion:@escaping (NSDictionary, NSError?) -> Void) {

    if let filePath = Bundle.main.path(forResource: "Keys", ofType:"plist"),
        let dictionary = NSDictionary(contentsOfFile:filePath) as? [String: AnyObject],
        let tokenRequestUrl = dictionary["TokenRequestUrl"] as? String {
        print(tokenRequestUrl)
        var request = URLRequest(url: URL(string: tokenRequestUrl)!)
        request.httpMethod = "POST"
        let postString = self.postDataFrom(params: params)
        request.httpBody = postString.data(using: .utf8)
        let task = URLSession.shared.dataTask(with: request) { data, response, error in
            guard let data = data, error == nil else {
                print("error=\(error)")
                return
            }

            if let httpStatus = response as? HTTPURLResponse, httpStatus.statusCode != 200 {
                completion(NSDictionary(), NSError(domain: "TWILIO", code: 1000, userInfo: [NSLocalizedDescriptionKey: "Incorrect return code for token request."]))
                return
            }

            do {
                let json = try JSONSerialization.jsonObject(with: data, options: []) as! [String:Any]
                print("json = \(json)")
                completion(json as NSDictionary, error as NSError?)
            } catch let error as NSError {
                completion(NSDictionary(), error)
            }
        }
        task.resume()
    }
    else {
        let userInfo = [NSLocalizedDescriptionKey : "TokenRequestUrl Key is missing"]
        let error = NSError(domain: "app", code: 404, userInfo: userInfo)

        completion(NSDictionary(), error)
    }
}

打印json命令未执行，但当我尝试在Data之前打印try时，它返回2730字节。因此，null作为字典传递，当我尝试获取访问令牌时，我最终得到nil。

更新

我刚尝试将数据打印为字符串。 HTML代码正在Data对象

中传递

获取Twilio访问令牌时获取nil值

更新

0 个答案: