如何在Swift中使用Alamofire上傳參數圖像

Question

我正在用swift開發iPhone應用程序。並且我使用Alamofire framework來處理http請求。我用Alamofire.request的POST，GET和等這樣的：

Alamofire.request(.POST, myURL , parameters: ["a": "1", "b" : "2" ]) 
     .response { (request, response, data, error) in 
} 

而且我用Alamofire.upload上傳圖像到服務器這樣的：

Alamofire.upload(.POST, uploadURL , fileURL) 

而且兩者完美的作品，但現在我要上傳圖片併發送一些參數，我的內容類型應該是multipart/form-data和Alamofire.upload不接受參數。

上有兩個問題，以便了解這一問題迅速，這first one沒有使用Alamofire（真的，爲什麼不呢？），並在second one，mattt（Alamofire開發）引用使用的編碼參數。

我檢查了他的例子，但仍然無法弄清楚如何做到這一點。

任何人都可以幫我解決這個問題嗎？

謝謝！ :)

Answer 1

要使用編碼參數，請創建一個ParameterEncoding變量，爲其分配一個編碼類型（enum包括.JSON，.URL），然後在您的NSURLRequest和參數中使用編碼函數。該函數返回兩個元素的元組，第一個元素是生成的NSURLRequest，第二個元素是可能的NSError。

以下是我用它爲一個自定義標題，我需要在一個項目

var parameterEncoding:ParameterEncoding! 
    switch method { 
     case .POST, .PUT : 
      parameterEncoding = ParameterEncoding.JSON 
     default : 
      parameterEncoding = ParameterEncoding.URL 
    } 
    var alamoRequest = Alamofire.Manager.sharedInstance.request(parameterEncoding.encode(mutableURLRequest, parameters: parameters).0) 

Answer 2

可以使用Alamofire 3.0+下面的代碼

func uploadImageAndData(){ 
    //parameters 
    let gender = "M" 
    let firstName = "firstName" 
    let lastName = "lastName" 
    let dob  = "11-Jan-2000" 
    let aboutme = "aboutme" 
    let token  = "token" 

    var parameters = [String:AnyObject]() 
    parameters = ["gender":gender, 
        "firstName":firstName, 
        "dob":dob, 
        "aboutme":about, 
        "token":token, 
        "lastName":lastName] 

    let URL = "http://yourserviceurl/" 
    let image = UIImage(named: "image.png") 

    Alamofire.upload(.POST, URL, multipartFormData: { 
     multipartFormData in 

     if let imageData = UIImageJPEGRepresentation(image, 0.6) { 
      multipartFormData.appendBodyPart(data: imageData, name: "image", fileName: "file.png", mimeType: "image/png") 
     } 

     for (key, value) in parameters { 
      multipartFormData.appendBodyPart(data: value.dataUsingEncoding(NSUTF8StringEncoding)!, name: key) 
     } 
    }, encodingCompletion: { 
     encodingResult in 

     switch encodingResult { 
     case .Success(let upload, _, _): 
      print("s") 
      upload.responseJSON { 
       response in 
       print(response.request) // original URL request 
       print(response.response) // URL response 
       print(response.data)  // server data 
       print(response.result) // result of response serialization 

       if let JSON = response.result.value { 
        print("JSON: \(JSON)") 
       } 
      } 
     case .Failure(let encodingError): 
      print(encodingError) 
     } 
    }) 
} 

Answer 3

SWIFT 2 AlamoFire簡單的圖片上傳（ REST API）

@amit gupta看起來答案包含大的開銷。 AlamoFire包含簡化解決方案的負載。 Alamofire.request方法包含幾個簡單的重載，可以用簡單的方式上傳。通過使用Alamofire.request（方法開發人員可以擺脫編碼開銷。

HTTP狀態415給出因爲沒有指定正確的介質類型。

請檢查下面我的解決方案。

import UIKit 
import Alamofire 

class ViewController: UIViewController { 

    @IBOutlet var imageView: UIImageView! 
    @IBOutlet var btnUpload: UIButton! 
    override func viewDidLoad() { 
     super.viewDidLoad() 
    } 

    func successDataHandler(responseData:String){ 

     print ("IMAGE UPLOAD SUCCESSFUL !!!") 

    } 

    func failureDataHandler(errorData:String){ 

     print (" !!! IMAGE UPLOAD FAILURE !!! ") 

    } 

    @IBAction func actionUpload(sender: AnyObject) { 

     let URL = "http://m8coreapibeta.azurewebsites.net/api/cards/SaveImages" 

     let postDataProlife:[String:AnyObject] = ["CardId":(dataCardDetail?.userId)!,"ImageType":1,"ImageData":imageView.image!] 

     uplaodImageData(URL, postData: postDataProlife, successHandler: successDataHandler, failureHandler: failureDataHandler) 
    } 

    func uplaodImageData(RequestURL: String,postData:[String:AnyObject]?,successHandler: (String) ->(),failureHandler: (String) ->()) ->() { 

     let headerData:[String : String] = ["Content-Type":"application/json"] 

     Alamofire.request(.POST,RequestURL, parameters: postData, encoding: .URLEncodedInURL, headers: headerData).responseString{ response in 
      switch response.result { 
      case .Success: 
       print(response.response?.statusCode) 
       successHandler(response.result.value!) 
      case .Failure(let error): 
       failureHandler("\(error)") 
      } 
     } 
    } 

    override func didReceiveMemoryWarning() { 
     super.didReceiveMemoryWarning() 
     // Dispose of any resources that can be recreated. 
    } 


} 

Answer 4

Almaofire與迅速2.0只是複製和粘貼如下從服務器code.here米asumming JSON響應

func uploadImageRemote (imageData : NSData?) -> Dictionary <String,AnyObject>{ 
    var imageDictionary = Dictionary<String,AnyObject>() 

     var tokenHeaders:[String:String]! = ["x-access-token":Constants.kUserDefaults.stringForKey("userToken")!] 
    Alamofire.upload(
     .POST, 
     "http://52.26.230.146:3300/api/profiles/imageUpload",headers:tokenHeaders, 
     multipartFormData: { multipartFormData in 
      multipartFormData.appendBodyPart(data: imageData!, name: "upload", fileName: "imageFileName.jpg", mimeType: "image/jpeg") 
     }, 
     encodingCompletion: { encodingResult in 
      switch encodingResult { 
      case .Success(let upload, _, _): 
       upload.progress { (bytesWritten, totalBytesWritten, totalBytesExpectedToWrite) in 
        print("Uploading Avatar \(totalBytesWritten)/\(totalBytesExpectedToWrite)") 
        dispatch_async(dispatch_get_main_queue(),{ 

        }) 
       } 
       upload.responseJSON { response in 
        guard response.result.error == nil else { 
         print("error calling GET \(response.result.error!)") 
         return 
        } 

        if let value = response.result.value { 
         print("Success JSON is:\(value)") 
         if let result = value as? Dictionary<String, AnyObject> { 
          imageDictionary["imageUrl"] = result["url"] 
         } 
        } 

        dispatch_async(dispatch_get_main_queue(),{ 
         //Show Alert in UI 
         print("Avatar uploaded"); 
        }) 
       } 

      case .Failure(let encodingError): 
       //Show Alert in UI 
       print("Avatar not uploaded \(encodingError)"); 
      } 
     } 
    ); 



return imageDictionary 
} 

Answer 5

Almaofire與迅速3。0

Alamofire.upload(multipartFormData: { multipartFormData in 
    var index = 1 
    for image in imageArray { 
     let imageData: Data = (UIImageJPEGRepresentation(image, 1.0) as Data?)! 

     multipartFormData.append(imageData, withName: "home-\(index)", fileName: "home-\(index)", mimeType: "image/jpeg") 

     index += 1 
    } 
    }, with: requestName, encodingCompletion: { result in 
     switch result { 
     case .success(let upload, _, _): 

      upload.responseJSON { response in 
       print("Image(s) Uploaded successfully:\(response)") 
      } 
     case .failure(let encodingError): 
      print("encodingError:\(encodingError)") 
     } 
}) 

Answer 6

斯威夫特4 Alamofire 4

let isConnected = connectivity.isConnectedToInternet() 

    func updateProfile(firstName:String,lastName:String ,imageData:Data?,completion: @escaping (isValidUser)->()) { 


    if self.isConnected { 

     var parameters : [String:String] = [:] 
     parameters["auth_key"] = loginUser?.authKey! 
     parameters["User[first_name]"] = firstName 
     parameters["User[last_name]"] = lastName 

     let url = "\(baseUrl)\(basicAuthenticationUrl.updateProfile)" 
     print(url) 


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

      if let data = imageData { 
       multipartFormData.append(data, withName: "image_url", fileName: "image.png", mimeType: "image/png") 
      } 

     }, usingThreshold: UInt64.init(), to: url, method: .post) { (result) in 
      switch result{ 
      case .success(let upload, _, _): 
       upload.responseJSON { response in 
        print("Succesfully uploaded = \(response)") 
        if let err = response.error{ 

         print(err) 
         return 
        } 

       } 
      case .failure(let error): 
       print("Error in upload: \(error.localizedDescription)") 

      } 
     } 
    } 

}