how to make http post json request params using swift 2.0 - swift2

Question

i need to send the json request parameters to the server using nsurl session in swift2.0. i don't know how to create the json request params.i created the params like this
let jsonObj = ["Username":"Admin", "Password":"123","DeviceId":"87878"]
// print("Params are \(jsonObj)")
//request.HTTPBody = try! NSJSONSerialization.dataWithJSONObject(jsonObj, options: [])
// or if you think the conversion might actually fail (which is unlikely if you built `params` yourself)
do {
request.HTTPBody = try NSJSONSerialization.dataWithJSONObject(jsonObj, options:.PrettyPrinted)
} catch {
print(error)
}
but its not ping to the method body so i am getting the failure response

Answer 1

Try the below code.
let parameters = ["Username":"Admin", "Password":"123","DeviceId":"87878"] as Dictionary<String, String>
let request = NSMutableURLRequest(URL: NSURL(string:YOURURL)!)
let session = NSURLSession.sharedSession()
request.HTTPMethod = "POST"
//Note : Add the corresponding "Content-Type" and "Accept" header. In this example I had used the application/json.
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue("application/json", forHTTPHeaderField: "Accept")
request.HTTPBody = try! NSJSONSerialization.dataWithJSONObject(parameters, options: [])
let task = session.dataTaskWithRequest(request) { data, response, error in
guard data != nil else {
print("no data found: \(error)")
return
}
do {
if let json = try NSJSONSerialization.JSONObjectWithData(data!, options: []) as? NSDictionary {
print("Response: \(json)")
} else {
let jsonStr = NSString(data: data!, encoding: NSUTF8StringEncoding)// No error thrown, but not NSDictionary
print("Error could not parse JSON: \(jsonStr)")
}
} catch let parseError {
print(parseError)// Log the error thrown by `JSONObjectWithData`
let jsonStr = NSString(data: data!, encoding: NSUTF8StringEncoding)
print("Error could not parse JSON: '\(jsonStr)'")
}
}
task.resume()
Hope it works for you!!