Question

我试图在iOS 9中使用Swift 2 HTTP上传（到Windows IIS服务器）图像和表单参数，出于某种原因，即使我已经发布了两次发布帖子仅在按钮单击时调用该函数。

我已经检查过按钮没有多次触发。

我使用基本身份验证发布到HTTPS（我尝试过使用相同结果的HTTP）。它使用JustHttp（版本0.3）和Alamofire 3发生。

在Alamofire（和JustHTTP）中观察上传进度我可以看到它更新了totalBytesExpectedToWrite，然后在某个时候通过上传，totalBytesExpectedToWrite值翻倍。

我已经尝试过调试JustHTTP和Alamofire以了解为什么会发生这种情况，但无法找到它发生的位置。

我使用的JustHttp代码是：

Just.post(
        "https://my.url.com",
        auth:("xxxxxxxx", "xxxxxxxxx"),
        timeout: 20,
        data:["Name": tfName.text! as AnyObject,
        "Email": tfEmail.text! as AnyObject,
        files:[
            "file":HTTPFile.Data("photo.jpg", imagedata!, nil)
        ],
        asyncProgressHandler: {(p) in
            print(p.type) // either .Upload or .Download
            if (p.type == ProgressType.Upload)
            {
                dispatch_async(dispatch_get_main_queue()) {
                    // update some UI
                    self.textView.titleLabel.text = "Sending Entry...\(Int(p.percent*100))%"
                }
            }
        },
        asyncCompletionHandler: {(r) in
        dispatch_async(dispatch_get_main_queue()) {
            print(r.statusCode)
        }
    })

Alamofire代码是：

Alamofire.upload(Method.POST, "https://the.url.com", multipartFormData: { multipartFormData in
        multipartFormData.appendBodyPart(data: imagedata!, name: "file", fileName: "photo.jpg", mimeType: "image/png")
        multipartFormData.appendBodyPart(data: "My Name".dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)!, name: "Name")
        multipartFormData.appendBodyPart(data: "My Email address".dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)!, name: "Email")
        },
        encodingCompletion: { encodingResult in
            print("encoding done")
            switch encodingResult {
            case .Success(let upload, _, _):
                upload.authenticate(user: "xxxxxx", password: "xxxxxxxxxx")
                    .progress { bytesWritten, totalBytesWritten, totalBytesExpectedToWrite in
                        print("a: \(bytesWritten) b: \(totalBytesWritten) c: \(totalBytesExpectedToWrite)")

                }
                upload.responseString { request, response, responseBody in
                    print(request)
                    print(response!.statusCode)
                    switch responseBody {
                    case Result.Success(let responseValue):
                        print(responseValue)

                    case Result.Failure(_, let error as NSError):
                        print(error)

                    default: break

                    }
                }
            case .Failure(let encodingError):
                print(encodingError)
            }
    })

更新：

我现在在没有身份验证的情况下尝试使用Alamofire，它按预期工作，即只发送一次整个请求。

Answer 1

好的，我已经解决了这个问题。除了auth参数之外，我还需要添加以下标题（在Just和Alamofire中）。我从Alamofire文档中获取了代码，但没有意识到我需要添加标题并包含auth属性。

let user = "xxxxxxx"
let password = "xxxxxxx"
let credentialData = "\(user):\(password)".dataUsingEncoding(NSUTF8StringEncoding)!
let base64Credentials = credentialData.base64EncodedStringWithOptions([])
let headers = ["Authorization": "Basic \(base64Credentials)"]

然后是Alamofire：

Alamofire.upload(Method.POST, "https://my.url.com", headers: headers, multipartFormData: [...]

JustHttp：

Just.post("https://my.url.com",
        auth:(user, password),
        headers: headers,
        [...]

为了完整起见，远程Web服务器是运行Asp.Net C＃MVC 5的IIS 7.5，带有以下Auth操作过滤器：

public class BasicAuthenticationAttribute : ActionFilterAttribute
{
    public string BasicRealm { get; set; }
    protected string Username { get; set; }
    protected string Password { get; set; }

    public BasicAuthenticationAttribute(string username, string password)
    {
        this.Username = username;
        this.Password = password;
    }

    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        var req = filterContext.HttpContext.Request;
        var auth = req.Headers["Authorization"];
        if (!String.IsNullOrEmpty(auth))
        {
            var cred = System.Text.ASCIIEncoding.ASCII.GetString(Convert.FromBase64String(auth.Substring(6))).Split(':');
            var user = new { Name = cred[0], Pass = cred[1] };
            if (user.Name == Username && user.Pass == Password) return;
        }
        var res = filterContext.HttpContext.Response;
        res.StatusCode = 401;
        res.AddHeader("WWW-Authenticate", String.Format("Basic realm=\"{0}\"", BasicRealm ?? "content.imaginecruising.co.uk"));
        res.End();
    }
}

C＃MVC用法：

[BasicAuthenticationAttribute("myusername", "mypassword", BasicRealm = "my.domain.com")]
public ActionResult MyAction()
{

使用JustHTTP和Alamofire两次发送HTTP帖子

1 个答案: