使用 Alamofire 上传图像不成功

Question

我正在尝试使用主体参数 img（图像）和 id（可以是任何数字）向端点发出 POST 请求。

这在 Postman 中有效（除非id 丢失，否则服务器永远不会响应失败/成功）：

但是，在 iOS 应用方面：

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，但不知何故服务器没有收到它。我的请求代码可能有问题吗？我得到一个：

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，可能是因为域不是 HTTP。但是，我将该域包含在 info.plist 的允许域列表中：

所以我不知道如何从这里出发。

Answer 1

您将 ID 参数与图像一起发送。所以尽量使用utf8编码。

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