在iOS中使用Alamofire上传图像

Question

我正在尝试使用Alamofire上传图片，但它似乎无法上传。

    Alamofire.upload(multipartFormData: { multipartFormData in
        multipartFormData.append(imgData, withName: "data", fileName: "\(Date().timeIntervalSince1970).jpg", mimeType: "image/jpg")
        multipartFormData.append(operaID.data, withName: "id")
    },
                     to: URL_CORDINATE)
    { (result) in
        switch result {
        case .success(let upload, _, _):

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

            upload.responseJSON { response in
                print("Upload image response:", response.result.value)
            }

        case .failure(let encodingError):
            print("Error while uploading image:", encodingError)
        }

我期待看到图片上传，但身体似乎有问题（我应该将身体中的img和id作为参数传递！）

然而它确实在邮递员：https://i.stack.imgur.com/f0mUd.png

Answer 1

你可以试试这个：

Alamofire.upload(
                multipartFormData: { multipartFormData in
                    multipartFormData.append(imgData!, withName: "img", fileName: "jpg", mimeType: "image/jpeg")
            },
                to: UPLOAD_IMAGE_URL,
                encodingCompletion: { (encodingResult) -> Void in
                    switch encodingResult {
                    case .success(let upload, _, _):
                        upload.responseJSON { response in
                            let result = response.data
                            do {
                                print("success")
                            }catch {
                                print("error")
                            }
                        }
                    case .failure(let encodingError):
                        print(encodingError)

                    }
            })

Answer 2

首先看它缺少HTTP方法：.post，mimeType应该是"image/jpeg"，而不是"image/jpg"。

看到这个：

    Alamofire.upload(multipartFormData: { multipartFormData in
        multipartFormData.append(imgData, withName: "data", fileName: "\(Date().timeIntervalSince1970).jpg", mimeType: "image/jpeg")
        multipartFormData.append(operaID.data, withName: "id")
    },
    to: YOUR_URL_HERE,
    method: .post,
    encodingCompletion: { result in
        switch result {
        case .success(let upload, _, _):

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

            upload.responseJSON { response in
                print("Upload image response:", response.result.value)
            }

        case .failure(let encodingError):
            print("Error while uploading image:", encodingError)
        }
    })

是否有任何服务器日志指示错误？您是否可以在服务器代码中添加断点并在localhost上运行它来检查控制器中的内容？

如果服务器端点是http，请将其放在Info.plist中：

<key>NSAppTransportSecurity</key>
<dict>
    <key>NSAllowsArbitraryLoads</key>
    <true/>
</dict>

Answer 3

        Alamofire.upload(multipartFormData: { multipartFormData in
            if let img = image, let imageData = img.jpegData(compressionQuality: 0.6) {
                multipartFormData.append(imageData, withName: imageName, fileName: "temp.jpg", mimeType: "image/jpg")
            }
            for (key, value) in parameter ?? [:] {
                if value is String || value is Int {
                    multipartFormData.append("\(value)".data(using: .utf8)!, withName: key)
                }
            }
        }, to: url, headers: headers, encodingCompletion: { encodingResult in
            switch encodingResult {
            case .success(let upload, _ , _ ):
                upload.responseJSON { response in
                    debugPrint(response)
                    if response.response?.statusCode == 200
                    {
                        if let jsonData = try? JSONSerialization.data(withJSONObject: response.result.value!, options: .prettyPrinted) {
                            print("Response: \n",String(data: jsonData, encoding: String.Encoding.utf8) ?? "nil")
                        }
                        success(response.result.value! as AnyObject)
                    }else
                    {
                        let res = response.result.value! as AnyObject
                        let msg = res["Message"] as? String
                        if msg != nil
                        {
                            failure(msg!)
                        }else
                        {
                            failure("")
                        }
                    }
                }
            case .failure(let encodingError):
                print(encodingError)
                failure(encodingError.localizedDescription)
            }
        })