Alamofire responseSerializationFailed(Alamofire.AFError.ResponseSerializationFailureReason.inputDataNilOrZeroLength)

Question

我有一些从远程web服务器上的MySQL DB获取结果的工作代码。它不再工作，我一直收到消息responseSerializationFailed(Alamofire.AFError.ResponseSerializationFailureReason.inputDataNilOrZeroLength)。下面是一些代码。

    Alamofire.request(ADS_URL, method: .get).validate().responseJSON { response in
        print("Request: \(String(describing: response.request))")   // original url request
        print("Response: \(String(describing: response.response))") // http url response
        print("Result: \(response.result)")                         // response serialization result

        switch response.result {
        case .success(let value):
            let json = JSON(value)
            print ("JSON: \(json)")

            if let data = response.data, let utf8Text = String(data: data, encoding: .utf8) {
                print("Data: \(utf8Text)") // original server data as UTF8 string
            }

        case .failure(let error):
            print("Error while querying database: \(String(describing: error))")
            return
        }
    }

我也在使用SwiftyJSON。以下是代码的结果...

Request: Optional(http://doyouado.com/adscan/get_ads)

Response: Optional(<NSHTTPURLResponse: 0x17502f3a0> { URL: http://doyouado.com/adscan/get_ads } { status code: 200, headers {
    Connection = "keep-alive";
    "Content-Length" = 0;
    "Content-Type" = "text/html; charset=UTF-8";
    Date = "Mon, 18 Sep 2017 16:04:37 GMT";
    Server = "nginx/1.12.1";
    "Set-Cookie" = "ado_session=a%3A5%3A%7Bs%3A10%3A%22session_id%22%3Bs%3A32%3A%225019d90891c70c81df8ebc2fe754a68f%22%3Bs%3A10%3A%22ip_address%22%3Bs%3A15%3A%22109.150.214.128%22%3Bs%3A10%3A%22user_agent%22%3Bs%3A86%3A%22ADoBroadcaster%2F1.0+%28com.GaryFrank.ADoBroadcaster%3B+build%3A1%3B+iOS+10.3.3%29+Alamofire%2F4.5.0%22%3Bs%3A13%3A%22last_activity%22%3Bi%3A1505750677%3Bs%3A9%3A%22user_data%22%3Bs%3A0%3A%22%22%3B%7D3130ef6f5541e6f944da5a5a1292350bf203fa1b; expires=Mon, 18-Sep-2017 18:04:37 GMT; Max-Age=7200; path=/";
} })

Result: FAILURE  

Error: responseSerializationFailed(Alamofire.AFError.ResponseSerializationFailureReason.inputDataNilOrZeroLength)

我尝试过使用.response和.responseString，但没有得到任何返回的信息。我完全被难住了。这一切都运行得很好。希望有人能对此有所了解？

Answer 1

只需将.responseJSON更改为.responseData即可。

在此解析数据之后：

let jsonDecoder = JSONDecoder() 
let parsedData = try jsonDecoder.decode(T.self, from: data)

并且没有错误：

(Alamofire.AFError.ResponseSerializationFailureReason.inputDataNilOrZeroLength)

Answer 2

对我来说起作用的是将编码从JSONEncoding.default改为URLEncoding.default！

Answer 3

对我起作用的是从.responseData到.response的改变