Django oauth2令牌请求在Swift Alamofire上失败

我正在构建一个iOS客户端和一个django后端服务。系统之间的连接是OAUTH2，由django-OAUTH2-toolkit实现

尽管在curl中执行的以下命令有效（返回访问令牌）：

然后，我在django-oauth2-toolkit源代码中跟踪了

InvalidClientError

，发现在以下文件的突出显示的片段中引发了异常：

oauthlib/oauth2/rfc6749/grant\u types/resource\u owner\u password\u credentials.py

if self.request_validator.client_authentication_required(request):
    log.debug('Authenticating client, %r.', request)
    print(request) # I included this print message to inspect the request variable in console.
    if not self.request_validator.authenticate_client(request):
        log.debug('Client authentication failed, %r.', request)
        raise errors.InvalidClientError(request=request) # RAISED!

我加入了

print（request）

行来检查curl和Alamofire提出的请求之间的差异。主要区别在于curl版本包含一个授权密钥：

'Authorization': 'Basic Z3ZFSjVXejloUGgybUJmdDNRaGhXZnlhNHpETG5KY3V6djJldWMwcjpSbVNPMkpwRFQ4bHp1UVFDYXN3T3dvVFkzRTBia01YWWxHVHNMcG5JUGZCUHFjbHJSZE5EOXQzd3RCS2xwR09MNWs1bEE4S2hmRUkydEhvWmx3ZVRKZkFXUDM4OERZa1NTZ0RvS0p3WjUyejRSQ29WRkZBS01RS1lydEpsTWNXag=='

阿拉莫菲尔的请求没有

我高度怀疑这是罪魁祸首，但我真的不知道从现在起还能做什么。我真的很感激任何智慧。

找到了答案

当我正在阅读关于HTTP协议的RFC文档时，这一部分引起了我的注意

具体来说,

要接收授权，客户端将发送用户ID和密码， 由一个冒号（“：”）字符分隔，在base64[5]中 凭据中的编码字符串

Alamofire似乎没有像预期的那样，以64位编码clientId和clientSecret。显然，curl会自动执行此操作。因此，我做了以下工作：

第一个编码：

 static let clientData: NSData = "\(clientId):\(clientSecret)".dataUsingEncoding(NSUTF8StringEncoding)!
 static let client64String = clientData.base64EncodedStringWithOptions(NSDataBase64EncodingOptions.init(rawValue: 0))

然后使用结果值设置请求标头：

let request = "http://localhost:8000/o/token/"
var URLRequest = NSMutableURLRequest(URL: NSURL(string: request)!)
URLRequest.HTTPMethod = "POST"

let parameters = ["grant_type": "password",
                  "username": in_username.text!,
                  "password": in_password.text!,
                  ]

let encoding = Alamofire.ParameterEncoding.URL
(URLRequest, _) = encoding.encode(URLRequest, parameters: parameters)

// SOLUTION!
URLRequest.setValue("Basic \(Authentication.client64String)", forHTTPHeaderField: "Authorization")

Alamofire.request(URLRequest)
    .responseJSON { response in
        let data = response
        print(data)
    }

然后，我收到了预期的令牌作为响应

let request = "http://\(Authentication.clientId):\(Authentication.clientSecret)@localhost:8000/o/token/"
var URLRequest = NSMutableURLRequest(URL: NSURL(string: request)!)
URLRequest.HTTPMethod = "POST"

let parameters = ["grant_type": "password", "username": in_username.text!, "password": in_password.text!]

let encoding = Alamofire.ParameterEncoding.URL
(URLRequest, _) = encoding.encode(URLRequest, parameters: parameters)
URLRequest.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")

Alamofire.request(URLRequest)
    .responseJSON { response in
        let data = response
        print(data)
    }

let request = "http://localhost:8000/o/token/"
var URLRequest = NSMutableURLRequest(URL: NSURL(string: request)!)
URLRequest.HTTPMethod = "POST"

let parameters = ["grant_type": "password",
                  "username": in_username.text!,
                  "password": in_password.text!,
                  ]

let encoding = Alamofire.ParameterEncoding.URL
(URLRequest, _) = encoding.encode(URLRequest, parameters: parameters)

// SOLUTION!
URLRequest.setValue("Basic \(Authentication.client64String)", forHTTPHeaderField: "Authorization")

Alamofire.request(URLRequest)
    .responseJSON { response in
        let data = response
        print(data)
    }