使用Alamofire上载图像失败

Question

我正在尝试向具有身体参数img（图像）和id（可以是任何数字）的端点发出POST请求。

这在Postman中有效（尽管除非缺少id否则服务器永远不会以失败/成功响应）：

但是，在iOS应用程序方面：

class func postPreviewImage(operaID: Int, image: UIImage, completion: @escaping () -> Void) {
    let URL_CORDINATE = "http://artaugmentedreality.com/api/postpreview/"
    print("Trying to post a preview of opera with ID:", operaID)

    guard let imgData = image.jpegData(compressionQuality: 0.2) else {
        print("Error while retrieving image data")
        return
    }

    Alamofire.upload(multipartFormData: { multipartFormData in
        multipartFormData.append(imgData, withName: "img", fileName: "\(Date().timeIntervalSince1970).jpg", mimeType: "image/jpeg")
        multipartFormData.append(operaID.data, withName: "id")
    },
                     to: URL_CORDINATE,
                     method: .post)
    { (result) in
        print("Result of Alamofire call is", result)

        switch result {
        case .success(let upload, _, _):

            upload.uploadProgress(closure: { (progress) in
                print("Upload Progress: \(progress.fractionCompleted)")
            })
        case .failure(let encodingError):
            print("Error while uploading image:", encodingError)
        }
    }
}

extension Int {
    var data: Data {
        var int = self
        return Data(bytes: &int, count: MemoryLayout<Int>.size)
    }
}

它正在上传，但是服务器不知何故没有收到它。 我的请求代码中可能有问题吗？ 我得到：

Error copying matching creds.  Error=-25300, query={
atyp = http;
class = inet;
"m_Limit" = "m_LimitAll";
ptcl = http;
"r_Attributes" = 1;
sdmn = "artaugmentedreality.com";
srvr = "artaugmentedreality.com";
sync = syna;
}

来自Alamofire的错误代码，可能是因为该域不是HTTP。 但是，我将该域包括在info.plist的允许域列表中：

所以我对如何从这里出发一无所知。

Answer 1

您正在发送ID参数和图片。 因此，请尝试使用utf8编码。

 multipartFormData.append(operaID.data(using: .utf8)!, withName: "id")