使用AFNetworking上传图片，内容类型为“application / x-www-form-urlencoded”SWift

Question

我想从我的iPhone应用程序上传图片到服务器。我正在使用AFNetworking v 2.6.3 请求内容类型是“application / x-www-form-urlencoded”。 我做了以下事情。

这是我的代码

let image = imageArray[0]
        let pngImage = UIImagePNGRepresentation(image)
        let imgString = pngImage?.base64EncodedString()
        let parameters : NSDictionary = ["img" : imgString ?? "",
                                         "name" : "imgName.png"]
        let serviceName = ".../UploadBusinessImage"

WebserviceHandler.sharedWebserviceHandler.sendPOSTRequestStream(serviceName,  parameters: parameters, successClosure: { (response) in
            self.logResponse(response)
        }) { (error ) in
            self.logResponse(error.localizedDescription as AnyObject)
        }



webserviceHandler is AFHTTPRequestOperationManager and set as below

class WebserviceHandler {
    var webserviceHandler : AFHTTPRequestOperationManager!
    class var sharedWebserviceHandler: WebserviceHandler {
        struct Static {
            static let instance: WebserviceHandler = WebserviceHandler()
            }
        return Static.instance
    }


init() {
        let baseURL = URL(string:"example.com/")!
        self.webserviceHandler = AFHTTPRequestOperationManager(baseURL:baseURL)
        self.webserviceHandler.requestSerializer = AFJSONRequestSerializer()
        self.webserviceHandler.responseSerializer = AFJSONResponseSerializer()

        }

func sendPOSTRequestStream(_ serviceName:String, parameters:NSDictionary, successClosure:@escaping WebserviceResultClosure, errorClosure:@escaping WebserviceErrorClosure){
self.webserviceHandler.post(serviceName, parameters: parameters, success: { (operation, responseObj) in
            successClosure(responseObj as AnyObject)
        }) { (operation, error) in
            errorClosure(error as NSError)
        }

}

但它不起作用。我该如何处理这样的请求？

除图像上传服务外，所有其他服务均为“application / json”