iOS http 401错误

 Error Domain=com.alamofire.error.serialization.response Code=-1011 "Request failed: unauthorized (401)" UserInfo={com.alamofire.serialization.response.error.response=<NSHTTPURLResponse: 0x136f16e40> { URL: http://*********** } { status code: 401, headers {
Vary = Accept-Encoding,
Content-Type = text/html; charset=utf-8,
X-Powered-By = Express,
Connection = keep-alive,
Date = Tue, 05 Apr 2016 04:55:38 GMT,
Content-Length = 71,
Etag = W/"47-gE0Luc1q9dVWOmtON98vVg"
} }, NSErrorFailingURLKey=http://**************, com.alamofire.serialization.response.error.data=<3c68313e 466f726d 61742069 73204175 74686f72 697a6174 696f6e3a 20426561 72657220 5b746f6b 656e5d3c 2f68313e 0a3c6832 3e3c2f68 323e0a3c 7072653e 3c2f7072 653e0a>, NSLocalizedDescription=Request failed: unauthorized (401)}