使用Alamofire无法正常工作将图像上传到服务器

Question

我想在API调用中从图库向服务器发送图像。该图像必须作为参数传递。要通过图像作为参数，我试图让图像的URL像这样，但它并没有给予正确的URL ..

var selectedImage : UIImage = image 
let imageData: NSData = UIImagePNGRepresentation(selectedImage)! as NSData 
let imageStr = imageData.base64EncodedString(options:.endLineWithCarriageReturn) 
imageArray.append(image) 

而且我试着上传的图片是这样的...

 for img in imageArray { 

      let url = "http://myApp..com/a/images_upload" 
      let headers = [ "Content-Type":"application/x-www-form-urlencoded"] 

      let URL = try! URLRequest(url: url, method: .post, headers: headers) 
      let parameters = 
       [ 
        "access_token": accessToken 
        "image": img 
        ] as [String : Any] 


      let imgData = UIImageJPEGRepresentation(img, 0.2)! 

      Alamofire.upload(multipartFormData: { (multipartFormData) in 
       multipartFormData.append(imgData, withName: "image",fileName: "file.jpg", mimeType: "file") 
       for (key, value) in parameters { 
        multipartFormData.append((value as AnyObject).data(using: String.Encoding.utf8.rawValue)!, withName: key) 
       } 
      }, with: URL) { (result) in 
       switch result { 
       case .success(let upload, _, _): 

        upload.uploadProgress(closure: { (progress) in 
         print("Upload Progress: \(progress.fractionCompleted)") 
        }) 

        upload.responseJSON { response in 
         print(response.result.value) 
         if let value = response.result.value {         
          print("IMG UPLOADED!!!") 
         } 
        } 
        case .failure(let encodingError): 
        print(“ERROR”) 
}}} 

但是这也是崩溃。我一直有这个问题相当长一段时间了......无法弄清楚确切的解决方案是什么......希望有人可以帮助... :)也做过很多类似的问题。但没找到，直到一个解决方案...

编辑：我的参数是：

let Parameters = 
        [ 
         "access_token": commonVarForAccessToken, 
         "seller_id": idForNewOldUser, 
         "product_id": self.productId, 
         "is_default": "1", 
         "sequence": 1, 
         "image": self.localPath 
         ] as [String : Any] 

Answer 1

使用此功能时作出的URLRequest。

func makeUrlRequestWithComponents(urlString:String, parameters:Dictionary<String, Any>, imageData:NSData) -> (URLRequestConvertible, NSData) { 

// create url request to send 
let mutableURLRequest = NSMutableURLRequest(URL: NSURL(string: urlString)!) 
mutableURLRequest.HTTPMethod = Alamofire.Method.POST.rawValue 
let boundaryConstant = "myRandomBoundary12345"; 
let contentType = "multipart/form-data;boundary="+boundaryConstant 
mutableURLRequest.setValue(contentType, forHTTPHeaderField: "Content-Type") 



// create upload data to send 
let uploadData = NSMutableData() 

// add image 
uploadData.appendData("\r\n--\(boundaryConstant)\r\n".dataUsingEncoding(NSUTF8StringEncoding)!) 
uploadData.appendData("Content-Disposition: form-data; name=\"file\"; filename=\"file.png\"\r\n".dataUsingEncoding(NSUTF8StringEncoding)!) 
uploadData.appendData("Content-Type: image/png\r\n\r\n".dataUsingEncoding(NSUTF8StringEncoding)!) 
uploadData.appendData(imageData) 

// add parameters 
for (key, value) in parameters { 
    uploadData.appendData("\r\n--\(boundaryConstant)\r\n".dataUsingEncoding(NSUTF8StringEncoding)!) 
    uploadData.appendData("Content-Disposition: form-data; name=\"\(key)\"\r\n\r\n\(value)".dataUsingEncoding(NSUTF8StringEncoding)!) 
} 
uploadData.appendData("\r\n--\(boundaryConstant)--\r\n".dataUsingEncoding(NSUTF8StringEncoding)!) 



// return URLRequestConvertible and NSData 
return (Alamofire.ParameterEncoding.URL.encode(mutableURLRequest, parameters: nil).0, uploadData) 
} 

然后这是上传图片的功能。

func uploadImage() 
{ 

    let Parameters = 
    [ 
"access_token": commonVarForAccessToken, 
"seller_id": idForNewOldUser, 
"product_id": self.productId, 
"is_default": "1", 
"sequence": 1, 
] as [String : Any] 


// example image data 

let imageData = UIImagePNGRepresentation(myImageView.image!,1) 



// CREATE AND SEND REQUEST ---------- 

let urlRequest = makeUrlRequestWithComponents("http://myApp..com/a/images_upload", parameters:  parameters, imageData: imageData) 

    Alamofire.upload(urlRequest.0, urlRequest.1).progress { (bytesWritten, totalBytesWritten, totalBytesExpectedToWrite) in 
    println("\(totalBytesWritten)/\(totalBytesExpectedToWrite)") 
} 
.responseJSON { (request, response, JSON, error) in 
    println("REQUEST \(request)") 
    println("RESPONSE \(response)") 
    println("JSON \(JSON)") 
    println("ERROR \(error)") 
    } 
} 

Answer 2

Almofire随着图像： -

Alamofire.upload(multipartFormData: { (multipartFormData) in 
      print(parameters) 
      if Array(parameters.keys).contains(Keys.Image) { 
      multipartFormData.append(UIImageJPEGRepresentation((parameters)[Keys.Image] as! UIImage, 1)!, withName: "image", fileName: "swift_file.jpeg", mimeType: "image/jpeg") 
      } 
      for (key, value) in parameters { 
       print(key,value) 
       if key != Keys.Image{ 
       multipartFormData.append((value as AnyObject).data(using: String.Encoding.utf8.rawValue)!, withName: key) 
       } 
      } 
     }, to:url) 
     { (result) in 
      switch result { 
      case .success(let upload, _, _): 
       upload.uploadProgress(closure: { (progress) in 
        //Print progress 
       }) 
       upload.responseJSON { response in 
        print(response.result) 
        self.getValidDict(result: response.result, completion: { (dict, error) in 
         var dict = dict 
         print(dict!) 
         print(parameters) 
         if dict == nil { 
          dict = NSDictionary.init(dictionary: 
           [kResultMessageKey: error?.localizedDescription ?? "Some error has been occured", 
           kResultStatusKey: false]) 
         } 
          Completion(true,dict![Keys.result]! as AnyObject) 
        }) 
       } 
      case .failure(let encodingError): 
       //print(encodingError.description) 
       Completion(false,encodingError.localizedDescription as AnyObject) 
       break 
      } 
     }