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Upload image with alamofire

由 只愿长相守 提交于 2019-12-03 13:46:47
Jack Song

While Rob's Answer is correct, here's the Swift 2.0 version, with upload progress update.

Just Copy and Paste the following code, change the upload URL, and add in your parameters. Should work like a charm.

PS: MRProgress is an Awesome Library for progress update!

    let apiToken = "ABCDE"
    Alamofire.upload(
        .POST,
        "http://sample.com/api/upload",
        multipartFormData: { multipartFormData in
            multipartFormData.appendBodyPart(data: imageData, name: "yourParamName", fileName: "imageFileName.jpg", mimeType: "image/jpeg")
            multipartFormData.appendBodyPart(data: apiToken.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)!, name :"api_token")
            multipartFormData.appendBodyPart(data: otherBodyParamValue.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)!, name :"otherBodyParamName")
        },
        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(),{
                        /**
                        *  Update UI Thread about the progress
                        */
                    })
                }
                upload.responseJSON { (JSON) in
                    dispatch_async(dispatch_get_main_queue(),{
                        //Show Alert in UI
                        print("Avatar uploaded");
                    })
                }

            case .Failure(let encodingError):
                //Show Alert in UI
                print("Avatar uploaded");
            }
        }
    );

Your error is telling you that the response is not valid JSON. You're calling responseJSON, indicating that you're expecting JSON response, but your server code isn't generating JSON. So there are two solutions:

  1. I'd suggest changing your PHP code to generate JSON responses.

    For example, if successful:

    echo json_encode(array("success"    => true,
                       "filename"   => basename($_FILES['image']['name']));

    or, if not successful, perhaps:

    echo json_encode(array("success"    => false,
                       "error_code" => 42,
                       "error_msg"  => 'File did not upload: '.$e - > getMessage());

    Clearly, you have to remove the extraneous echo lines in the PHP if you're going to return JSON, but hopefully this illustrates the pattern. But this will generate a response that you can parse with Alamofire's responseJSON (or use NSJSONSerialization).

  2. Alternatively, you could change the Alamofire code to not expect JSON (e.g. call response rather than responseJSON), but then parsing the responses becomes far more difficult.

As a minor, unrelated issue, I'd personally advise not building that request manually, but rather let Alamofire do that for you. Here's an example from the README:

Alamofire.upload(
    multipartFormData: { multipartFormData in
        multipartFormData.append(unicornImageURL, withName: "unicorn")
        multipartFormData.append(rainbowImageURL, withName: "rainbow")
    },
    to: "https://httpbin.org/post",
    encodingCompletion: { encodingResult in
        switch encodingResult {
        case .success(let upload, _, _):
            upload.responseJSON { response in
                debugPrint(response)
            }
        case .failure(let encodingError):
            print(encodingError)
        }
    }
)

This is for Swift 3 and Alamofire 4. See revision history for this question for prior versions.

SWIFT 2 AlamoFire total Solution for image upload to REST API

AlamoFire contain load of simplified solution. Alamofire.request method contains several simplified overload which can use to upload in simple manner. By using Alamofire.request( method developer can get rid of encoding overhead.

Please check my solution below.

The solution was Tested on SWIFT 2.0 

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.
    }


}

let parameters: Parameters = [
      "userid":user.userID!
    ]

    print("the uploadData - \(parameters)")

    let imageData = UIImageJPEGRepresentation(deviceImage.image!, 1)

    let url = try! URLRequest(url: URL(string:"your URL here")!, method: .post, headers: nil)

    Alamofire.upload(multipartFormData: { (multipartFormData) in
      multipartFormData.append(imageData!, withName: "file_name", fileName: "abc.jpg", mimeType: "image/jpg")
      for (key, value) in parameters {
        multipartFormData.append((value as AnyObject).data(using: String.Encoding.utf8.rawValue)!, withName: key)
      }
    }, with: url, encodingCompletion: { (result) in
            switch result {

            case .success(let upload, _, _):

              upload.responseJSON { response in

                if response.response?.statusCode == 200 {
                  PrepareUIElements.showAlertAndPerformSegue(sender: self, message: "Uploaded Successfully", identifier: "ShowHome")
                } else {
                  print("whatever you want")
                }
              }

            case .failure(let encodingError):
              PrepareUIElements.showAlert(sender: self, message: "Unable to Upload")
              print(encodingError)
            }

    })
标签
swift
upload
alamofire
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