python - 使用 Alamofire iOS 以 Base64 将图像上传到服务器

Question

我需要在服务器上以 base64 格式发送图像，但我尝试了所有方法，但运气不佳，仍然收到错误 500 Internal Server Error。 但是当我尝试在 POSTMAN 上做同样的事情时，它工作得很好。我附上了 postman 的截图。请帮忙，我几天以来一直坚持这个问题。

func sendImageToServer(image:UIImage){
        SVProgressHUD.show()
        let imageData = image.jpegData(compressionQuality: 0.2)!.base64EncodedData()
        Alamofire.upload(multipartFormData: { (multipartFormdata) in
                multipartFormdata.append(imageData, withName: "image", fileName: "photo.png", mimeType: "image/png")

        }, to: "http://35.180.52.242:5000/predict", method: .post, headers: headers()) { (result) in
            switch result {
            case .success(let upload, _, _):

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

                upload.responseJSON { response in
                    print(response)
                    SCLAlertView().showError("Error", subTitle: response.response?.description ?? "")
                    SVProgressHUD.dismiss()
                }

            case .failure(let encodingError):
                print(encodingError)
                SVProgressHUD.dismiss()
            }
        }
    }
    func headers()->HTTPHeaders{
        return ["Content-Type": "application/json"] as HTTPHeaders
    }

这就是 Response 的样子。

• some : { URL: http://35.180.52.242:5000/predict } { Status Code: 500, Headers { "Content-Length" = ( 291 ); "Content-Type" = ( "text/html" ); Date = ( "Fri, 22 Feb 2019 22:26:03 GMT" ); Server = ( "Werkzeug/0.14.1 Python/2.7.15" ); } }

Answer 1

您可以尝试删除手动设置的 header headers: headers() 吗？ Alamofire 应该为多部分表单数据设置这些 header ，我猜你正在用 application/json

覆盖它们