我正在尝试使用swift将图像上传到服务器。我用NSMutableURLRequest尝试了URLSession。我收到网络连接丢失。我认为简单地使用Alamofire是一种更好的方法，但是由于xcode找不到函数update而陷入了一个问题。

有人知道如何使用Alamofire上传图片吗？或找到更新功能？

alamofire的代码：

func uploadImageWithAlmofire(url: String) {
        let params: Parameters = ["name": "abcd","gender": "Male"]
        Alamofire.upload(multipartFormData:
            {
                (multipartFormData) in
                multipartFormData.append(uiimagejpegrepresentation(self.yourimageView.image!,0.1)!,withName: "file",fileName: "file.jpeg",mimeType: "image/jpeg")
                for (key,value) in params
                {
                    multipartFormData.append((value as AnyObject).data(using: String.Encoding.utf8.rawValue)!,withName: key)
                }
        },to:url,headers:nil)
        { (result) in
            switch result {
            case .success(let upload,_,_ ):
                upload.uploadProgress(closure: { (progress) in
                    //Print progress
                })
                upload.responseJSON
                    { response in
                        //print response.result
                        if response.result.value != nil
                        {
                            let dict :NSDictionary = response.result.value! as! NSDictionary
                            let status = dict.value(forKey: "status")as! String
                            if status=="1"
                            {
                              print("DATA UPLOAD SUCCESSFULLY")
                            }
                        }
                }
            case .failure(let encodingError):
                break
            }
        }
    }