Alamofire invalid value around character 0

Question

Alamofire.request(.GET, \"url\").authenticate(user: \"\", password: \"\").responseJSON() {
    (request, response, json, error) in
    println(error)
    println(jso         


        

Answer 1

Maybe it is too late but I solved this problem in another way not mentioned here:

When you use .responseJSON(), you must set the response header with content-type = application/json, if not, it'll crash even if your body is a valid JSON. So, maybe your response header are empty or using another content-type.

Make sure your response header is set with content-type = application/json to .responseJSON() in Alamofire work properly.

Answer 2

I solved using this as header:

let header = ["Content-Type": "application/json", "accept": "application/json"]

Answer 3

I got the same error. But i found the solution for it.

NOTE 1: "It is not Alarmofire error", it's bcouse of server error.

NOTE 2: You don't need to change "responseJSON" to "responseString".

public func fetchDataFromServerUsingXWWWFormUrlencoded(parameter:NSDictionary, completionHandler: @escaping (_ result:NSDictionary) -> Void) -> Void {

        let headers = ["Content-Type": "application/x-www-form-urlencoded"]
        let completeURL = "http://the_complete_url_here"
        Alamofire.request(completeURL, method: .post, parameters: (parameter as! Parameters), encoding: URLEncoding.default, headers: headers).responseJSON { response in

            if let JSON = response.result.value {
                print("JSON: \(JSON)") // your JSONResponse result
                completionHandler(JSON as! NSDictionary)
            }
            else {
                print(response.result.error!)
            }
        }
    }

Answer 4

I also faced same issue. I tried responseString instead of responseJSON and it worked. I guess this is a bug in Alamofire with using it with django.

Answer 5

May this Help YOu

Alamofire.request(.GET, "YOUR_URL")
     .validate()
     .responseString { response in
         print("Success: \(response.result.isSuccess)")
         print("Response String: \(response.result.value)")
     }

Answer 6

I got same error while uploading image in multipart form in Alamofire as i was using

multipartFormData.appendBodyPart(data: image1Data, name: "file")

i fixed by replacing by

multipartFormData.appendBodyPart(data: image1Data, name: "file", fileName: "myImage.png", mimeType: "image/png")

Hope this help someone.