ios - Alamofire上传图片损坏

Question

我有使用 Alamofire 上传图像的功能。当我上传它时，图像已损坏。但是当我将其保存到设备时，可以打开图像。

这是上传代码

Alamofire.upload(multipartFormData: { (_multipartFormData:MultipartFormData) in
        for (key, value) in parameters! {
            if key == "foto_id" {
                _multipartFormData.append(
                    "\(value)".data(using: String.Encoding.utf8)!,
                    withName: key,
                    fileName: "_foto_id.png",
                    mimeType: "image/png"
                )
            } else if key == "foto_selfie" {
                _multipartFormData.append(
                    "\(value)".data(using: String.Encoding.utf8)!,
                    withName: key,
                    fileName: "_foto_selfie.png",
                    mimeType: "image/png"
                )
            } else {
                //Data other than image
                _multipartFormData.append((value as! String).data(using: .utf8)!, withName: key)
            }
        }
    }, usingThreshold: 1, to: BASE_URL, method: .post) { (encodingResult:SessionManager.MultipartFormDataEncodingResult) in

        switch encodingResult {


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

            upload.responseObject{(response: DataResponse<clsResponsePostFotoID>) in

                let reqLoginResponse = response.result.value

                completionHandler(reqLoginResponse, nil)

            }
            break

        case .failure(let encodingError):
            print(encodingError)
            //                completionHandler(nil,encodingError as NSError?)
            break
        }
    }
}

如果我将 "\(value)".data(using: String.Encoding.utf8)! 更改为 value as!数据，会显示错误

无法使用类型为“(Data?, withName: String, fileName: String, mimeType: String)”的参数列表调用“append”

“append”的重载存在于这些部分匹配的参数列表中:(Data, withName: String, fileName: String, mimeType: String), (URL, withName: String, fileName: String, mimeType: String)

我该如何解决这个问题？谢谢

Answer 1

尝试使用以下代码:

if let image = value as? UIImage, let imageData = UIImageJPEGRepresentation(image, 0.6) {
    multipartFormData.append(imageData, withName: key, fileName: key+".jpg", mimeType: "image/jpeg")
}