Send dictionary data via HTTP POST method in Swift - swift

Question

I'm trying to make an HTTP post request with params set in a dictionary here's my dict
let parameters = [
["name": "tag","value": "login"],
["name": "email","value": "s#s.com"],
["name": "password","value": "aaaa"]
]
but I don't to know how to access it in hers's my complete request function
func data_request(_ url:String)
{
let parameter = [
["name": "tag","value": "login"],
["name": "email","value": "s#s.com"],
["name": "password","value": "aaaa"]
]
let url:NSURL = NSURL(string: url)!
let session = URLSession.shared
let request = NSMutableURLRequest(url: url as URL)
request.httpMethod = "POST"
let paramString = parameter?
request.httpBody = paramString.data(using: String.Encoding.utf8)
let task = session.dataTask(with: request as URLRequest) {
(
data, response, error) in
guard let _:NSData = data as NSData?, let _:URLResponse = response, error == nil else {
print("error")
return
}
if let dataString = NSString(data: data!, encoding: String.Encoding.utf8.rawValue)
{
print(dataString)
}
}
task.resume()
}

Answer 1

Need to convert dictionary to json string like below:
let jsonData = try JSONSerialization.data(withJSONObject: parameters, options: .prettyPrinted)
After that pass to the http.Body
// insert json data to the request
request.setValue("application/json; charset=utf-8", forHTTPHeaderField: "Content-Type")
request.HTTPBody = jsonData
let task = NSURLSession.sharedSession().dataTaskWithRequest(request){ data, response, error in
if error != nil{
print("Error -> \(error)")
return
}
do {
let result = try NSJSONSerialization.JSONObjectWithData(data!, options: []) as? [String:AnyObject]
print("Result -> \(result)")
} catch {
print("Error -> \(error)")
}
}
task.resume()
return task
} catch {
print(error)
}

Answer 2

You need to convert the Dictionary into Data and set it to httpBody
you could solve in this way
let paramData = try? JSONSerialization.data(withJSONObject: parameter, options: [])
request.httpBody = paramData