使用 AFNetworking 将图像上传到服务器已损坏

Question

我一直在努力将图像上传到服务器并成功上传，但如果我尝试打开图像，它会在服务器端显示cannot be displayed because it contains errors。我正在使用 AFNetworking 将图像转换为 JPEGRepresentation 后上传图像。

let uploadManager : AFHTTPSessionManager = AFHTTPSessionManager()

        uploadManager.responseSerializer = AFHTTPResponseSerializer() as AFHTTPResponseSerializer
        uploadManager.requestSerializer = AFHTTPRequestSerializer() as AFHTTPRequestSerializer

        uploadManager.requestSerializer.timeoutInterval = 20

        uploadManager.POST(baseURL, parameters: nil, constructingBodyWithBlock: { (formData) -> Void in

            let selectedImage = self.userImage.image
            let imageData : NSData = UIImageJPEGRepresentation(selectedImage!, 0.5)!
            formData.appendPartWithFileData(imageData, name: "1", fileName: "userimage\(self.objManager.userID)", mimeType: "image/jpeg")

            print("Size of Image(Kbytes):\(imageData.length/1024)")
            print(baseURL)
            }, progress: nil, success: { (task, responseObject) -> Void in

                let jsonData: NSData = responseObject as! NSData
                let dataString = String(data: jsonData, encoding: NSUTF8StringEncoding)
                print(dataString)

            }) { (task, error) -> Void in


        }

图片来自imagePickerController：

func imagePickerController(picker: UIImagePickerController, didFinishPickingImage image: UIImage, editingInfo: [String : AnyObject]?) {

    print("Did finish picking the image succesfully")
    self.userImage.image = image
    picker.dismissViewControllerAnimated(true, completion: nil)

    // call uploading image function


}

是什么导致图像损坏？我一直在与后端开发人员联系，他的机制是接收字节数组！将 NSData 发送到服务器，然后服务器将我的 NSData 转换为字节数组会损坏图像吗？还是可以？我该如何解决这个问题？我发送图片时有什么问题吗？

Answer 1

1) 在(task, error) -> Void in 中打印错误（如果存在），因为如果出现问题，您会在那里收到错误。

NSLog("%@", error.localizedDescription)

2) 你确定name: "1" 是写的吗？因为这是后端获取文件数据的字段名称（请询问您的后端开发人员此字段名称）

3) 将文件类型jpeg 附加到上传图片名称：

formData.appendPartWithFileData(imageData, name: "1", fileName: "userimage\(self.objManager.userID).jpeg", mimeType: "image/jpeg")