Getting Invalid response Alamofire - ios

Question

Hello i am using Alamofire but i am getting "Invalid JSON." in the response and i have used following code-
parametersV = ["username":amrit21#yopmail.com, "password":123456]
let headers = ["Content-Type": "application/json", "x-csrf-token":""]
Alamofire.request(.POST, "https://dev.staffingevolution.com/api/user/login", parameters: parametersV, headers: headers).responseJSON { response in
print(response.request) // original URL request
print(response.response) // URL response
print(response.data) // server data
print(response.result) // result of response serialization
if let JSON = response.result.value {
print("JSON: \(JSON)")
}
}

Answer 1

I Solved it
let parametersV = ["username":"amrit21#yopmail.com", "password":"123456"]
Alamofire.request(.POST, "https://dev.staffingevolution.com/api/user/login", parameters: parametersV, encoding: .JSON)
.responseJSON { response in
if let JSON = response.result.value {
print("JSON: \(JSON)")
}
}
It was a problem was encoding you were not encoding your JSON request. use encoding: .JSON

Answer 2

Some times when in response there is not proper JSON then piece of code .responseJSON { response in throws exception and we can't see what type of response has been received. in such case we can print it to console before converting to .responseJSON { response in
Below is full example
public func deleteImage(_ photoId: Int) {
let requestURL = URL(string: APPURL.BASE_API_URL + "postApi/deletePostPhoto")!
let paramDict: [String: String] = ["photoId": String(photoId), "accessKey": APP_DELEGATE.loggedInUser.accessKey, "language":APP_DELEGATE.language.lowercased()]
Alamofire.upload(
multipartFormData: { multipartFormData in
for (key, value) in paramDict {
multipartFormData.append(value.data(using: .utf8)!, withName: key)
}
},
usingThreshold:UInt64.init(),
to: requestURL ,
method:.post,
headers:nil,
encodingCompletion: { encodingResult in
switch encodingResult {
case .success(let upload, _, _):
// this is point where we can get actual response recieved from server, it may have some html , xml or anything
upload.responseData(completionHandler: { response in
print(response)
let responseData = String(data: response.data!, encoding: String.Encoding.utf8)
print("responseData=",responseData ?? "none")
})
// if there is proper JSON recieved it will be executed otherwise it will fall in failure
upload.responseJSON { response in
if((response.result.value) != nil) {
let swiftyJsonVar = JSON(response.result.value!)
print("response JSON: ",swiftyJsonVar)
}
else {
let error = response.error
print(error?.localizedDescription ?? "")
}
}
case .failure(let encodingError):
print(encodingError.localizedDescription)
}
})
}