如何使用 Alamofire 5 将图像作为多部分数据上传到 aws 预签名 url？

Question

I am trying to upload an image to the pre-signed AWS URL. I tried with Alamofire 5 upload method which accepts multipartData. I am getting a 403 error with Alamofire 5 multipart upload.

When I try with URLSession it is working properly.

/// Working code

        var request: URLRequest = URLRequest(url: requestURL)
        request.httpMethod = "PUT"
        request.httpBody = image
        request.setValue("image/jpeg", forHTTPHeaderField: "Content-Type")
        let tasksession: URLSessionDataTask = session.dataTask(with: request, completionHandler: { (response, urlResp, error) in
            if let data: Data = response {
                do {
                    let json: [String: Any]? = try JSONSerialization.jsonObject(with: data, options: []) as? [String: Any]
                    debugPrint("json \(json)")
                }
                catch {
                    debugPrint("error \(error)")
                }
            }



            print(response ?? "response nil")
            print(error ?? "response nil")
        })
        tasksession.resume()

Same when I try with AF 5 it is not working

// Not working code.

 AF.upload(multipartFormData: { (multiPart) in

            multiPart.append(imageData, withName: "file", fileName: "image.jpg", mimeType: "image/jpeg")
            }, to: url, method: .put, headers: ["Content-Type": "image/jpeg"],
                                                  ])
        .uploadProgress(queue: .main, closure: { progress in
                    //Current upload progress of the file
                    print("Upload Progress: \(progress.fractionCompleted)")
                })
                .responseJSON(completionHandler: { data in
                    let json: [String: Any]? = data as? [String: Any]
                    debugPrint("upload complete json \(data)")
            })

Could someone tell why it is not working with multipart upload with Alamofire 5, multipart upload is working in Android.

Answer 1

Alamofire Version 4.9.1

Alamofire.upload(multipartFormData: { (multipartFormData) in
            multipartFormData.append(imageData, withName: "file", fileName: "image.jpg", mimeType: "image/jpeg")
            //Any Post Params if you have.
            for (key, value) in parameters {
                multipartFormData.append(value.data(using: String.Encoding.utf8)!, withName: key)
            }
        }, to:uploadUrlStr) //uploadUrlStr: upload url in your case
        { (result) in
            switch result {
            case .success(let upload, _, _):
                upload.uploadProgress(closure: { (progress) in
                    print("Uploading")
                    print(CGFloat(progress.fractionCompleted * 100))
                })
                
                upload.responseJSON { response in
                    print("Upload Finished")
                    guard let resultValue = response.result.value else {
                        NSLog("Result value in response is nil")
                        return
                    }

                }
                
            case .failure(let encodingError):
                print(encodingError.localizedDescription)
            }
        }

This is working for me.