Swift3 如何在swift 3.0中使用Backhandle上传图像

我正在致力于swift 3.0 uisng。我对这个概念还不熟悉。我正在上传使用UIImagePickerController从手机图库中选择的图像。在后面，我正在使用RESTAPI。我使用以下代码上传图像

 public func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any])
    {
        let image = info[UIImagePickerControllerOriginalImage] as? UIImage
        self.uploadButton.isHidden = true
        myImageView.contentMode = .scaleAspectFit
       myImageView.image = image


        let imageUrl          = info[UIImagePickerControllerReferenceURL] as! NSURL
        let imageName         = imageUrl.lastPathComponent
        let documentDirectory = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first!
        let photoURL          = NSURL(fileURLWithPath: documentDirectory)
        let localPath         = photoURL.appendingPathComponent(imageName!)

        print(localPath!)


        let imageurl = info[UIImagePickerControllerReferenceURL] as? NSURL
        let imagename = imageurl?.lastPathComponent
        print(imagename!)

         //https://api.backendless.com/<application id>/<version name>/files/<path>/<file name>

        Alamofire.request(“https://api.backendless.com/66B90F83-A813-84CF-FF9D-4A01AC28E100/v1/files/ + "\(localPath!)/\(imagename!)", method: .post, parameters: nil, encoding: JSONEncoding.default, headers: HeadersClass.allHeaders.headers).responseJSON { response in
            debugPrint(response)
        }

        imagePicker.dismiss(animated: true, completion: nil)

    }

public func imagePickerController（picker:UIImagePickerController，didFinishPickingMediaWithInfo:[字符串：任意]）
{
将image=info[UIImagePickerControllerOriginalImage]设为？UIImage
self.uploadButton.ishiden=true
myImageView.contentMode=.ScaleSpectFit
myImageView.image=image
将imageUrl=info[UIImagePickerControllerReferenceURL]设为！NSURL
让imageName=imageUrl.lastPathComponent
让documentDirectory=NSSearchPathForDirectoriesInDomains（.documentDirectory、.userDomainMask，true）。首先！
让photoURL=NSURL（fileURLWithPath:documentDirectory）
让localPath=photoURL.appendingPathComponent（imageName！）
打印（本地路径！）
将imageurl=info[UIImagePickerControllerReferenceURL]设为？NSURL
让imagename=imageurl？.lastPathComponent
打印（imagename！）
//https://api.backendless.com///files//
Alamofire.request（“https://api.backendless.com/66B90F83-A813-84CF-FF9D-4A01AC28E100/v1/files/ +“\（localPath！）/\（imagename！）”，方法：.post，参数：nil，编码：JSONEncoding.default，头：HeadersClass.allHeaders.headers.responseJSON{response in
调试打印（响应）
}
imagePicker.Disclose（动画：true，完成：nil）
}

但我得到的是“状态代码错误=400”

谁能告诉我我在这里犯了什么错误。

---

提前谢谢。

从第一步开始，你就完全错了。 您发出的请求url是返回url，当您成功上载文件时，BackEnding服务将返回给您

关于回溯服务，您需要实现下面列出的功能：

// Upload data block identified as 'content' to the specified path.
// If the server returns an error, it is delivered through
// the 'responder' object
func upload(_ path: String,
            content content: NSData,
            responder responder: IResponder!) -> Void

// Upload data block identified as 'content' to the specified path.
// If the file already exists on the server, overwrite if the
// 'overwrite' argument is set to YES/TRUE.
// If the server returns an error, it is delivered through
// the 'responder' object
func upload(_ path: String,
            content content: NSData,
            overwrite overwrite: Bool,
            responder responder: IResponder!) -> Void

// Upload data block identified as 'content' to the specified path.
// If the server returns an error, it is delivered through
// the 'error' block-based callback
func upload(_ path: String,
            content content: NSData,
            response responseBlock: ((BackendlessFile!) -> Void)!,
            error errorBlock: ((Fault!) -> Void)!) -> Void

// Upload data block identified as 'content' to the specified path.
// If the file already exists on the server, overwrite if the
// 'overwrite' argument is set to YES/TRUE.
// If the server returns an error, it is delivered through
// the 'error' block-based callback
func upload(_ path: String,
            content content: NSData,
            overwrite overwrite: Bool,
            response responseBlock: ((BackendlessFile!) -> Void)!,
            error errorBlock: ((Fault!) -> Void)!) -> Void

---

更多详细信息，您可以阅读他们的文档。

为什么您不使用他们的库？我使用该Api仅用于获取400状态码错误否，您试图通过alamofire发送，请求不存在的地址，后台服务器如何知道您的文件本地路径？使用他们所做的上传文件如果我想使用应用程序动态上传图像，你有一节要讲。我使用了“上传功能”，但是我怎么能看到我发送的图像呢？