无法上传多张图片-Swift

Question

我正在尝试快速上传多张图像。请看下面的代码。我只上传第一张图片，其余的都不上传。

dic:[String:Any]的位置-成功上载的一些字符串值。 还有imageData:[Data]：-包含jpg图像数据数组

private class func loadServerURL(url: URL, dic:[String:Any], imageData:[Data] , completion:@escaping(_ success:Bool, _ data:[String:Any]?, _ error:Error?)->Void){

        let accessToken = CurrentSession.instance.access_token

       // let request = NSMutableURLRequest(url:url as URL)
        var request = URLRequest(url: url)
        request.httpMethod = "POST";

        request.setValue("Bearer \(accessToken)", forHTTPHeaderField: "Authorization")

        let boundary = "0xKhTmLbOuNdArY"

        request.setValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type")
        var uploadData = Data()
        for (index,dta) in imageData.enumerated(){
            print("Loop Index : \(index)")
            let img = createBodyWithParameters(parameters: dic, filePathKey: "UploadedImage_\(index)", imageDataKey: dta as NSData, boundary: boundary, imgName: "\(index)") as Data
            uploadData.append(img)
        }
        request.httpBody = uploadData


        let loadDataTask = URLSession.shared.dataTask(with: request) { (data, resposne, error)  in

            if let _ = error{
                completion(false,nil,error)
            }
            else if let response = resposne as? HTTPURLResponse{
                if response.statusCode != 200{
                    if error == nil{

                    }
                    completion(false,nil,error)
                }
                else{

                    do {

                        if let parsedData = try? JSONSerialization.jsonObject(with: data!)  {

                            let ff = parsedData as? Dictionary<String,Any>
                            print(ff?["status"] ?? "fdf")

                            // If session expires logout from the application
                            if let _ = ff!["Message"] as? String{
                                if (ff!["Message"] as! String == "Authorization has been denied for this request.") {
                                }
                            }

                            completion(true,parsedData as? Dictionary<String, Any>,nil)
                        }
                    }
                }
            }
        }
        loadDataTask.resume()
    }


private class func createBodyWithParameters(parameters: [String: Any]?, filePathKey: String?, imageDataKey: NSData, boundary: String,imgName:String) -> NSData {
        let body = NSMutableData();


        if parameters != nil {
            for (key, value) in parameters! {
                body.appendString("--\(boundary)\r\n")
                body.appendString("Content-Disposition: form-data; name=\"\(key)\"\r\n\r\n")
                body.appendString("\(value)\r\n")
            }
        }

       // let filename = String.getTodayString() + "\(imgName).jpg"
         let filename = "profile_\(imgName).jpg"
        print("image_NAME--- \(filename)")
//        let filename = "img.jpg"
        let mimetype = "image/jpg"

        body.appendString("--\(boundary)\r\n")
        body.appendString("Content-Disposition: form-data; name=\"\(filePathKey!)\"; filename=\"\(filename)\"\r\n")
        body.appendString("Content-Type: \(mimetype)\r\n\r\n")
        body.append(imageDataKey as Data)
        body.appendString("\r\n")

        body.appendString("--\(boundary)--\r\n")

        return body
    }