2

我收到此错误Extra argument 'error' in call

上下文中的代码

   var post:NSString = "name=\(Username)&email=\(Email)&phone=\(phonenumb)&password=\(Password)&address=\(address)"

    NSLog("PostData: %@",post);

    var url:NSURL = NSURL(string: "http://userregistration.php")!

    var postData:NSData = post.dataUsingEncoding(NSASCIIStringEncoding)!

    var postLength:NSString = String( postData.length )

    var request:NSMutableURLRequest = NSMutableURLRequest(URL: url)
    request.HTTPMethod = "POST"
    request.HTTPBody = postData
    request.setValue(postLength as String, forHTTPHeaderField: "Content-Length")
    request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
    request.setValue("application/json", forHTTPHeaderField: "Accept")


    var reponseError: NSError?
    var response: NSURLResponse?

    var urlData: NSData? = NSURLConnection.sendSynchronousRequest(request, returningResponse:&response, error:&reponseError)


    if ( urlData != nil ) {
        let res = response as! NSHTTPURLResponse!;

        NSLog("Response code: %ld", res.statusCode);

        if (res.statusCode >= 200 && res.statusCode < 300)
        {
            var responseData:NSString  = NSString(data:urlData!, encoding:NSUTF8StringEncoding)!

            NSLog("Response ==> %@", responseData);

            var error: NSError?

            let jsonData:NSDictionary = NSJSONSerialization.JSONObjectWithData(urlData!, options:NSJSONReadingOptions.MutableContainers , error: &error) as NSDictionary

            let success:NSInteger = jsonData.valueForKey("success") as! NSInteger

            //[jsonData[@"success"] integerValue];

            NSLog("Success: %ld", success);

            if(success == 1)
            {
                NSLog("Sign Up SUCCESS");
                self.dismissViewControllerAnimated(true, completion: nil)
            } else {
                var error_msg:NSString

                if jsonData["error_message"] as? NSString != nil {
                    error_msg = jsonData["error_message"] as! NSString
                } else {
                    error_msg = "Unknown Error"
                }
                var alertView:UIAlertView = UIAlertView()
                alertView.title = "Sign Up Failed!"
                alertView.message = error_msg as String
                alertView.delegate = self
                alertView.addButtonWithTitle("OK")
                alertView.show()

            }

        } else {
            var alertView:UIAlertView = UIAlertView()
            alertView.title = "Sign Up Failed!"
            alertView.message = "Connection Failed"
            alertView.delegate = self
            alertView.addButtonWithTitle("OK")
            alertView.show()
        }
    }  else {
        var alertView:UIAlertView = UIAlertView()
        alertView.title = "Sign in Failed!"
        alertView.message = "Connection Failure"
        if let error = reponseError {
            alertView.message = (error.localizedDescription)
        }
        alertView.delegate = self
        alertView.addButtonWithTitle("OK")
        alertView.show()
   }

我的错误发生在两个地方。

第一个

  var urlData: NSData? = NSURLConnection.sendSynchronousRequest(request, returningResponse:&response, error:&reponseError)

第二个

let jsonData:NSDictionary = NSJSONSerialization.JSONObjectWithData(urlData!, options:NSJSONReadingOptions.MutableContainers , error: &error) as NSDictionary

我试过以下

do {
    if let jsonResult = try NSJSONSerialization.JSONObjectWithData(data, options: []) as? NSDictionary {
        print(jsonResult)
    }
} catch let error as NSError {
    print(error.localizedDescription)
}

但我导致错误如下

使用未解决jsonData

现在任何人都可以帮助我如何使用我上面的原始代码添加这个来纠正错误。

4

2 回答 2

1

就您而言，您应该知道它NSURLConnection已被弃用。请使用NSURLSession以支持新版本的iOS。这是它的代码：

func postRequestWithFormData(strUrl: String, param: NSDictionary?, completionHandler: (responseData: NSDictionary?, error: NSError?) -> ()) -> (){

    if isConnectedToNetwork(){

        let url = NSURL(string: strUrl)!
        let config = NSURLSessionConfiguration.defaultSessionConfiguration()
        let session = NSURLSession(configuration: config)

        let request = NSMutableURLRequest(URL: url)
        request.HTTPMethod = "POST"
        request.cachePolicy = NSURLRequestCachePolicy.ReloadIgnoringCacheData

        var paramString = String()

        for (key, value) in param! {
            paramString = paramString + (key as! String) + "=" + (value as! String) + "&"
        }

        request.HTTPBody = paramString.dataUsingEncoding(NSUTF8StringEncoding)

        let task = session.dataTaskWithRequest(request) {data, response, error -> Void in

            dispatch_async(dispatch_get_main_queue(), { () -> Void in

                do{
                    if data != nil{

                        let json = try NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.AllowFragments) as? NSDictionary

                        if let parseJSON = json {

                            // Parsed JSON
                            completionHandler(responseData: parseJSON, error: nil)
                        }
                        else {
                            // Woa, okay the json object was nil, something went worng. Maybe the server isn't running?
                            let jsonStr = NSString(data: data!, encoding: NSUTF8StringEncoding)

                            #if DEBUG
                                print("Error could not parse JSON: \(jsonStr)")
                            #endif
                        }
                    }else{

                        completionHandler(responseData: nil, error: error)
                    }

                }catch let error as NSError{

                    print(error.localizedDescription)
                    completionHandler(responseData: nil, error: error)
                }
            })
        }

        task.resume()
    }else{
        //Alert No Internet Connection
    }
}

如果您仍然遇到任何错误，请告诉我。

用法

postRequestWithFormData(appConstants.BASEURL + appConstants.API_USER_SIGN_IN, param: paramaters) { (responseData, error) in

        if responseData != nil && error == nil{                
            if responseData!.valueForKey("response_status") as! String == "0"{
                helperInstance.showSingleAlert(responseData!.valueForKey("message") as! String)
            }else if responseData!.valueForKey("response_status") as! String == "1"{
              //Getting Data
            }
        }else if error != nil{
//Error Received
            }
        }
于 2016-08-09T06:45:04.747 回答
1

改变

var urlData: NSData? = NSURLConnection.sendSynchronousRequest(request, returningResponse:&response, error:&reponseError)

和

let urlData = try? NSURLConnection.sendSynchronousRequest(request, returningResponse: &response)

并改变

let jsonData:NSDictionary = NSJSONSerialization.JSONObjectWithData(urlData!, options:NSJSONReadingOptions.MutableContainers , error: &error) as NSDictionary

和

let jsonData = try NSJSONSerialization.JSONObjectWithData(urlData!, options: []) as! NSDictionary

您的完整代码将是：

let url:NSURL = NSURL(string: "http://userregistration.php")!

    let postData:NSData = post.dataUsingEncoding(NSASCIIStringEncoding)!

    let postLength:NSString = String( postData.length )

    let request:NSMutableURLRequest = NSMutableURLRequest(URL: url)
    request.HTTPMethod = "POST"
    request.HTTPBody = postData
    request.setValue(postLength as String, forHTTPHeaderField: "Content-Length")
    request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
    request.setValue("application/json", forHTTPHeaderField: "Accept")


    let reponseError: NSError?
    var response: NSURLResponse?

    do {
        let urlData = try? NSURLConnection.sendSynchronousRequest(request, returningResponse: &response)

        if ( urlData != nil ) {
            let res = response as! NSHTTPURLResponse!;

            NSLog("Response code: %ld", res.statusCode);

            if (res.statusCode >= 200 && res.statusCode < 300)
            {
                let responseData:NSString  = NSString(data:urlData!, encoding:NSUTF8StringEncoding)!

                NSLog("Response ==> %@", responseData);


                do {
                    let jsonData = try NSJSONSerialization.JSONObjectWithData(urlData!, options: []) as! NSDictionary

                    let success:NSInteger = jsonData.valueForKey("success") as! NSInteger

                    //[jsonData[@"success"] integerValue];

                    NSLog("Success: %ld", success);

                    if(success == 1)
                    {
                        NSLog("Sign Up SUCCESS");
                        self.dismissViewControllerAnimated(true, completion: nil)
                    } else {
                        var error_msg:NSString

                        if jsonData["error_message"] as? NSString != nil {
                            error_msg = jsonData["error_message"] as! NSString
                        } else {
                            error_msg = "Unknown Error"
                        }
                        let alertView:UIAlertView = UIAlertView()
                        alertView.title = "Sign Up Failed!"
                        alertView.message = error_msg as String
                        alertView.delegate = self
                        alertView.addButtonWithTitle("OK")
                        alertView.show()

                    }

                } catch let error as NSError {
                    print("json error: \(error.localizedDescription)")
                }



            } else {
                let alertView:UIAlertView = UIAlertView()
                alertView.title = "Sign Up Failed!"
                alertView.message = "Connection Failed"
                alertView.delegate = self
                alertView.addButtonWithTitle("OK")
                alertView.show()
            }
        }
    }
于 2016-08-09T06:42:57.203 回答