Alamofire分段上传给出错误

Question

我正在尝试使用Alamofire多部分表单数据将图像上传到服务器，但是在执行时会出现以下错误

异常“ NSInvalidArgumentException”，原因：“-[__ NSCFNumber dataUsingEncoding：]：无法识别的选择器已发送到实例0x1669e250”

在行中

MultipartFormData.append(((value as AnyObject).data(using: String.Encoding.utf8.rawValue))!, withName: key)

下面是我的完整代码

guard let image = selectedImage else {
        return
    }

    let heightInPixels = Int(image.size.height * image.scale)
    let widthInPixels = Int(image.size.width * image.scale)



     let parameters: Parameters = ["user_id":  Utility().getBearerToken(),"description": descriptionTextView.text ?? "",
     "lat": self.lat ?? "" , "long":self.long ?? "" ,
     "location_name": locationTextView.text ?? "" ,
     "height": heightInPixels, "width": widthInPixels];


//    let parameters: Parameters = ["user_id":  Utility().getBearerToken()];
    print(parameters)
    Alamofire.upload(multipartFormData: { MultipartFormData in
        for (key, value) in parameters {
            MultipartFormData.append(((value as AnyObject).data(using: String.Encoding.utf8.rawValue))!, withName: key)

        }

        let imgData = UIImageJPEGRepresentation(image,1)
        MultipartFormData.append(imgData!, withName: "file", fileName: "upload.jpg", mimeType: "image/jpeg")

    }, to: "http://server.com/upload.php") { (result) in
        switch result {
        case .success(let upload, _, _):
            upload.uploadProgress(closure: { (Progress) in
                print("Upload Progress: \(Progress.fractionCompleted)")
            })

            upload.responseString { response in
                print(response.result.value!)
            }       
        case .failure(let encodingError):
            print(encodingError.localizedDescription)
            break
        }
  }

我尝试了MultipartFormData.append(value.data(using: .utf8)!, withName: name!)但是它说value没有成员数据

Answer 1

在func下面尝试一下，它正在工作。

func uploadImage(urlString : String , image : UIImage, param : [String : Any], completionHandler : @escaping ( _ result : Any?) -> ())  {

    guard let imageData = UIImageJPEGRepresentation(image, 0.5) else {
        print("Could not get JPEG representation of UIImage")
        return
    }

    Alamofire.upload(multipartFormData: { multipartFormData in
        for (key, value) in param {
            multipartFormData.append("\(value)".data(using: String.Encoding.utf8)!, withName: key as String)
        }

        multipartFormData.append(imageData,
                                 withName: "image",
                                 fileName: "image.jpg",
                                 mimeType: "image/jpeg")
    },
                     to: urlString,
                     headers: ["Authorization": "Basic xxx"],
                     encodingCompletion: { encodingResult in

                        switch encodingResult {
                        case .success(let upload, _, _):
                            upload.uploadProgress { progress in
                            }
                            upload.validate()
                            upload.responseJSON { response in
                                completionHandler(response.result.value)
                            }
                        case .failure(let encodingError):
                            print(encodingError)
                            completionHandler(nil)
                        }
    })
}

Answer 2

这是使用其他API参数上传视频和图像的功能。

func uploadWithAlamofire(Parameters params : [String: Any]?,ImageParameters imgparams :  [NSObject : AnyObject]?,VideoParameters vidoparam :  [NSObject : AnyObject]?,Action action : NSString, success: @escaping (AnyObject) -> Void, failure: @escaping (AnyObject) -> Void)
    {
        var base_url = BASEURL
        base_url.append(action as String)
        print(base_url)
        var headers : HTTPHeaders = [:]
        if let token = UserDefaults.standard.value(forKey: "webToken"){
            headers = ["JWT-Authorization": "Bearer \(token)"]
        }

        Alamofire.upload(multipartFormData: { multipartFormData in
            if imgparams != nil{
                for (key, value) in imgparams! {
                    if let imageData = UIImageJPEGRepresentation(value as! UIImage, 1) {
                        multipartFormData.append(imageData, withName: key as! String, fileName: "\(NSDate().timeIntervalSince1970 * 1000)).jpg", mimeType: "image/jpg")
                    }
                }
            }
            if vidoparam != nil{
                for (key, value) in vidoparam! {
                    multipartFormData.append(value as! URL , withName: key as! String, fileName: "\(NSDate().timeIntervalSince1970 * 1000).mp4", mimeType: "application/octet-stream")
                }
            }
            if params != nil
            {
                for (key, value) in params! {
                    multipartFormData.append((value as! String).data(using: .utf8)!, withName: key as! String)
                }
            } }, to: base_url, method: .post, headers: headers,
                 encodingCompletion: { encodingResult in
                    switch encodingResult {
                    case .success(let upload, _, _):
                        upload.uploadProgress { progress in
                            print(progress.fractionCompleted)
                        }
                        upload.response { [weak self] response in
                            guard self != nil else {
                                return
                            }
                            let responseString = String(data: response.data!, encoding: String.Encoding.utf8)
                            var dictonary:NSDictionary?
                            if let data = responseString?.data(using: String.Encoding.utf8) {
                                do {
                                    dictonary = try JSONSerialization.jsonObject(with: data, options: []) as? [String:AnyObject] as NSDictionary?

                                    if dictonary != nil{
                                        if dictonary?.value(forKey: "status_code") as! String == "200"{
                                            return success(dictonary!)
                                        }else{
                                            print(dictonary?.value(forKey: "status_code")! as Any)
                                            let errorMsg : Any = Int(dictonary?.value(forKey: "status_code") as Any)
                                            utility.showAlertWithStatusCode(code: errorMsg)
                                        }
                                    }
                                } catch let error as NSError {
                                    print(error)
                                }
                            }

                        }
                    case .failure(let encodingError):
                        print("error:\(encodingError)")
                        return failure(encodingError as AnyObject)
                    }
        })
    }