How to make HTTP Post request with JSON body in Swift

Question

I m trying to make an HTTP post request with a JSON body    How to be able to add an NSdictionnary to the HTTP request body   Here is my code  it doesn t seem to work properly   var entry1   Response IdQuestion  6510 IdProposition  10 Time  30  var entry2   Response IdQuestion  8284 IdProposition  10 Time  30  Responses append entry1  Responses append entry2   let list   Responses map    0 asDictionary    let json     List  list  IdSurvey   102   IdUser   iOSclient   UserInformation   iOSClient     let data   NSData   NSKeyedArchiver archivedDataWithRootObject json    NSJSONSerialization isValidJSONObject json   let myURL   NSURL string   http   www myserver com    let request   NSMutableURLRequest URL  myURL  request HTTPMethod    POST     request setValue  application x-www-form-urlencoded   forHTTPHeaderField   Content-Type       request setValue  application json   forHTTPHeaderField   Accept     request HTTPBody   data let task   NSURLSession sharedSession   dataTaskWithRequest request        data  response  error in     println response         Your completion handler code here   task resume

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Swift 4 and 5  HTTP POST request using URLSession API in Swift 4  func postRequest username  String  password  String  completion   escaping   String  Any    Error   - gt  Void           declare parameter as a dictionary which contains string as key and value combination      let parameters     name   username   password   password         create the url with NSURL     let url   URL string   https   www myserver com api login           create the session object     let session   URLSession shared        now create the Request object using the url object     var request   URLRequest url  url      request httpMethod    POST    set http method as POST      do           request httpBody   try JSONSerialization data withJSONObject  parameters  options   prettyPrinted     pass dictionary to data object and set it as request body       catch let error           print error localizedDescription          completion nil  error               HTTP Headers     request addValue  application json   forHTTPHeaderField   Content-Type       request addValue  application json   forHTTPHeaderField   Accept          create dataTask using the session object to send data to the server     let task   session dataTask with  request  completionHandler    data  response  error in          guard error    nil else               completion nil  error              return                    guard let data   data else               completion nil  NSError domain   dataNilError   code  -100001  userInfo  nil               return                    do                 create json object from data             guard let json   try JSONSerialization jsonObject with  data  options   mutableContainers  as   String  Any  else                   completion nil  NSError domain   invalidJSONTypeError   code  -100009  userInfo  nil                   return                           print json              completion json  nil            catch let error               print error localizedDescription              completion nil  error                        task resume       objc func submitAction   sender  UIButton          call postRequest with username and password parameters     postRequest username   username   password   password      result  error  in     if let result   result           print  success    result          else if let error   error           print  error    error localizedDescription              Using Alamofire   let parameters     name    username    password    password123   Alamofire request  https   www myserver com api login   method   post  parameters  parameters  encoding  URLEncoding httpBody

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The following Swift 5 Playground code shows a possible way to solve your problem using JSONSerialization and URLSession   import UIKit import PlaygroundSupport  PlaygroundPage current needsIndefiniteExecution   true  let url   URL string   http   localhost 8080 new    let jsonDict     firstName    Jane    lastName    Doe   let jsonData   try  JSONSerialization data withJSONObject  jsonDict  options       var request   URLRequest url  url  request httpMethod    post  request setValue  application json   forHTTPHeaderField   Content-Type   request httpBody   jsonData  let task   URLSession shared dataTask with  request     data  response  error  in     if let error   error           print  error    error          return            do           guard let data   data else   return           guard let json   try JSONSerialization jsonObject with  data  options      as   String  AnyObject  else   return           print  json    json        catch           print  error    error           task resume

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a combination of several answers found in my attempt to not use 3rd party frameworks like Alamofire       let body   String  Any      provider    Google    email    emailaddress gmail com       let api url    https   erics es p u      let url   URL string  api url       var request   URLRequest url  url       do           let jsonData   try JSONSerialization data withJSONObject  body  options   prettyPrinted          request httpBody   jsonData       catch let e           print e             request httpMethod   HTTPMethod post rawValue     request addValue  application json   forHTTPHeaderField   Content-Type        let task   URLSession shared dataTask with  request    data  response  error in         guard let data   data  error    nil else               print error  localizedDescription     No data               return                   let responseJSON   try  JSONSerialization jsonObject with  data  options              if let responseJSON   responseJSON as   String  Any                print responseJSON                       task resume

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var request   URLRequest url  URL string   http   yogpande apphb com api my posttblhouse             request httpMethod    POST          let postString    email testname gmail com amp password 1234567          request httpBody   postString data using   utf8          let task   URLSession shared dataTask with  request    data  response  error in             guard let data   data  error    nil else                   print  error  error                    return                            if let httpStatus   response as  HTTPURLResponse  httpStatus statusCode    200                        print  statusCode should be 200  but is   httpStatus statusCode                    print  response     response                                let responseString   String data  data  encoding   utf8              print  responseString     responseString                      task resume

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import UIKit  class ViewController  UIViewController        var getdata   NSMutableData        IBOutlet weak var password txt  UITextField       IBOutlet weak var mobile txt  UITextField       IBOutlet weak var email txt  UITextField       IBOutlet weak var name txt  UITextField      override func viewDidLoad             super viewDidLoad              Do any additional setup after loading the view  typically from a nib             override func didReceiveMemoryWarning             super didReceiveMemoryWarning              Dispose of any resources that can be recreated              IBAction func RegAction   sender  UIButton            let url   URL string   https                  var requrl   URLRequest url  url           requrl setValue  application x-www-form-urlencoded   forHTTPHeaderField   content type           requrl httpMethod    post          let postString    name   name txt text   amp email   email txt text   amp mobile   mobile txt text   amp password   password txt text            print  poststring-- gt  gt   postString          requrl httpBody   postString data using   utf8          let task   URLSession shared dataTask with  requrl   data response error  in             let mydata   data             do                  print  mydata  mydata                   do                      self getdata append mydata                       let jsondata   try JSONSerialization jsonObject with  self getdata as Data  options                          print  jsondata-- gt   jsondata                                              catch                               print  error-- gt   error localizedDescription                                   task resume             GET METHOD  import UIKit  class ViewController  UIViewController UITableViewDelegate UITableViewDataSource       var dataarray     String  Any         func tableView   tableView  UITableView  numberOfRowsInSection section  Int  - gt  Int           return dataarray count           func tableView   tableView  UITableView  heightForRowAt indexPath  IndexPath  - gt  CGFloat           return 450 0            func tableView   tableView  UITableView  cellForRowAt indexPath  IndexPath  - gt  UITableViewCell           let cell   tableView dequeueReusableCell withIdentifier   cell   for  indexPath  as  TableViewCell         let  item   dataarray indexPath row           cell name txt text   item  name  as  String               cell pname txt text   item  realname  as  String               cell team txt text   item  team  as  String               cell firstapp txt text   item  firstappearance  as  String               cell Createdby txt text   item  createdby  as  String               cell Publisher txt text   item  publisher  as  String                if item  imageurl  as  String                          let url   URL string  item  imageurl  as  String                    if url    nil                  let data   try  Data contentsOf  url     make sure your image in this url does exist  otherwise unwrap in a if let check   try-catch                 cell imgvw image   UIImage data  data                                   return cell               IBOutlet weak var apiTable  UITableView      override func viewDidLoad             super viewDidLoad              Do any additional setup after loading the view  typically from a nib            override func viewWillAppear   animated  Bool            guard let url   URL string   https   www simplifiedcoding net demos marvel                else  return          let task   URLSession shared dataTask with  url     data  response  error  in             guard let dataResponse   data                  error    nil else                       print error  localizedDescription     Response Error                       return               do                    here dataResponse received from a network request                 let jsonResponse   try JSONSerialization jsonObject with                      dataResponse  options      as    String Any                            print  jsonResponse---- gt   jsonResponse    Response result                  self dataarray   jsonResponse                 DispatchQueue main async                          self apiTable reloadData                                   catch let parsingError                   print  Error   parsingError                                  task resume

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you can do something like this   func HTTPPostJSON url  String   data  NSData      callback   String  String   - gt  Void             var request   NSMutableURLRequest URL  NSURL string  url            request HTTPMethod    POST          request addValue  application json  forHTTPHeaderField   Content-Type           request addValue  application json  forHTTPHeaderField   Accept           request HTTPBody   data         HTTPsendRequest request  callback  callback     func HTTPsendRequest request  NSMutableURLRequest      callback   String  String   - gt  Void            let task   NSURLSession sharedSession                dataTaskWithRequest request                     data  response  error  - gt  Void in                 if  error    nil                        callback     error localizedDescription                    else                       callback NSString data  data                          encoding  NSUTF8StringEncoding   as String  nil                                       task resume       use var data  Dictionary lt String  AnyObject gt    yourDictionaryData lt -- var requestNSData NSData   NSJSONSerialization dataWithJSONObject request  options NSJSONWritingOptions 0   error   amp err   HTTPPostJSON  http   yourPosturl     data  requestNSData     response  error  - gt  Void in     if error    nil            error         return             println response

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func fucntion          var parameters    String String        let apiToken    Bearer   ApiUtillity sharedInstance getUserData key   vAuthToken         let headers     Vauthtoken  apiToken       parameters     firstname  name  lastname  last name  mobile  mobile number  email  emails Address        Alamofire request ApiUtillity sharedInstance API Join   user edit profile    method   post  parameters  parameters  encoding  URLEncoding default headers headers  responseJSON   response in         debugPrint response          if let json   response result value               let dict NSDictionary    json as  NSDictionary               print dict                                print response               let StatusCode   dict value forKey   status   as  Int              if StatusCode  200                               ApiUtillity sharedInstance dismissSVProgressHUDWithSuccess success   Success                   let UserData   dict value forKey   data   as  NSDictionary                 print UserData                              else if StatusCode  401                               let ErrorDic NSDictionary   dict value forKey   message   as  NSDictionary                 let ErrorMessage   ErrorDic value forKey   error   as  String                            else                                let ErrorDic NSDictionary   dict value forKey   message   as  NSDictionary                 let ErrorMessage   ErrorDic value forKey   error   as  String                                  else                       ApiUtillity sharedInstance dismissSVProgressHUDWithError error   Something went wrong

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Swift4 - Apple Solution  POST  and  Codable   Uploading Data to a Website using  request httpmethod    Post  and Codable Stucts    see  Listing 2 Configuring a URL request  let userlogin   User username  username  password  password  deviceid UIDevice current identifierForVendor  uuidString       guard let uploadData   try  JSONEncoder   encode userlogin  else           print  Error UploadData             return            let urlUser   URL string  APPURL apiURL        var request   URLRequest url  urlUser      request httpMethod    POST      request setValue  application json   forHTTPHeaderField   Content-Type        var responseStatus   0      let task   URLSession shared uploadTask with  request  from  uploadData    data  response  error in         if let error   error               let code    error as NSError  code             print  Error   code      error localizedDescription                completion code              return                   guard let response   response as  HTTPURLResponse else               print  Invalid response               return              do your response handling here

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var request   URLRequest url  URL string    your URL         request httpMethod    POST        let postString    String format   email    amp lang      arguments   txt emailVirify text   language        print postString       emailString   txt emailVirify text       request httpBody   postString data using   utf8      request addValue  delta141forceSEAL8PARA9MARCOSBRAHMOS   forHTTPHeaderField   Authorization       request addValue  application x-www-form-urlencoded   forHTTPHeaderField   Content-Type       request addValue  application json   forHTTPHeaderField   Accept         let task   URLSession shared dataTask with  request    data  response  error in         guard let data   data  error    nil             else                       print  error   String describing  error                 return                    do                        let dictionary   try JSONSerialization jsonObject with  data  options   allowFragments  as  NSDictionary             print dictionary               let status   dictionary value forKey   status   as  String             let sts   Int status              DispatchQueue main async                                         if sts    200                                               print dictionary                                              else                                              self alertMessageOk title  self Alert   message  dictionary value forKey   message   as  String                                                          catch                       print error                       task resume

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let url   URL string   url    var request   URLRequest url  url  request setValue  application x-www-form-urlencoded   forHTTPHeaderField   Content-Type   request setValue  application json   forHTTPHeaderField   Accept    request httpMethod    POST     let postString    ChangeAccordingtoyourdata   paramOne  amp ChangeAccordingtoyourdata2   paramTwo   request httpBody   postString data using   utf8  let task   URLSession shared dataTask with  request    data  response  error in     guard let data   data  error    nil else                                                      check for fundamental networking error         print  error   error            return            if let httpStatus   response as  HTTPURLResponse  httpStatus statusCode    200                check for http errors         print  statusCode should be 200  but is   httpStatus statusCode            print  response     response             SVProgressHUD showError withStatus   Request has not submitted successfully  nPlease try after some time              let responseString   String data  data  encoding   utf8      print  responseString     responseString         SVProgressHUD showSuccess withStatus   Request has submitted successfully  nPlease wait for a while       DispatchQueue main async             enter code           task resume

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SWIFT 5 People Here    let json   String  Any      key    value            let jsonData   try  JSONSerialization data withJSONObject  json              create post request         let url   URL string   http   localhost 1337 postrequest addData      PUT Your URL         var request   URLRequest url  url          request httpMethod    POST          request setValue    String describing  jsonData  count     forHTTPHeaderField   Content-Length           request setValue  application json   forHTTPHeaderField   Content-Type              insert json data to the request         request httpBody   jsonData          let task   URLSession shared dataTask with  request    data  response  error in             guard let data   data  error    nil else                   print error  localizedDescription     No data                   return                           let responseJSON   try  JSONSerialization jsonObject with  data  options                  if let responseJSON   responseJSON as   String  Any                    print responseJSON    Code after Successfull POST Request                                  task resume

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HTTP Post in Swift capturing the errors  let json     Activity KEY IDSUBJECT   activity idSubject  Activity KEY RECORDMODE    3   Activity KEY LOCATION LONGITUDE    0  Activity KEY LOCATION LATITUDE    0   Activity KEY CHECKIN   String activity dateCheckIn   Activity KEY CHECKOUT   String activity dateCheckOut     do       let jsonData   try NSJSONSerialization dataWithJSONObject json  options   PrettyPrinted          create post request     let url   NSURL string   https      appspot com  ah api activityendpoint v1 activity        let request   NSMutableURLRequest URL  url      request HTTPMethod    POST          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 - gt    error                return                    do               let result   try NSJSONSerialization JSONObjectWithData data   options      as   String AnyObject               print  Result - gt    result               catch               print  Error - gt    error                         task resume       return task   catch       print error

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Perfect nRewik answer updated to 2019  Make the dictionary  let dic          quot username quot  u       quot password quot  p       quot gems quot  g    Assemble it like this  var jsonData Data  do       jsonData   try JSONSerialization data        withJSONObject  dic        options   prettyPrinted    catch       print error localizedDescription     Create the request exactly like this  notice it is a  quot post quot  let url   URL string   quot https   blah com server dudes decide this quot    var request   URLRequest url  url   request setValue  quot application json  charset utf-8 quot        forHTTPHeaderField   quot Content-Type quot   request setValue  quot application json  charset utf-8 quot        forHTTPHeaderField   quot Accept quot    request httpMethod    quot POST quot  request httpBody   jsonData  Then send  checking for either a networking error  so  no bandwidth etc  or an error response from the server  let task   URLSession shared dataTask with  request    data  response  error in     guard let data   data  error    nil else              check for fundamental networking error         print  quot fundamental networking error   error  quot           return            if let httpStatus   response as  HTTPURLResponse  httpStatus statusCode    200              check for http errors         print  quot statusCode should be 200  but is   httpStatus statusCode  quot           print  quot response     response  quot              let responseString   String data  data  encoding   utf8      print  quot responseString     responseString  quot    Fortunately it s now that easy

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prepare json data     let mapDict      1   First    2   Second        let json      title   ABC     dict   mapDict   as  String   Any      let jsonData   NSData   NSKeyedArchiver archivedData withRootObject  json  as NSData         create post request     let url   NSURL string   http   httpbin org post        let request   NSMutableURLRequest url  url as URL      request httpMethod    POST          insert json data to the request     request httpBody   jsonData as Data       let task   URLSession shared dataTask with  request as URLRequest   data response error in         if error    nil              return                   do               let result   try JSONSerialization jsonObject with  data   options      as   String AnyObject               print  Result  result              catch               print  Error - gt    error                         task resume

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Try this      prepare json data let json   String  Any      title    ABC                               dict     1   First    2   Second     let jsonData   try  JSONSerialization data withJSONObject  json      create post request let url   URL string   http   httpbin org post    var request   URLRequest url  url  request httpMethod    POST      insert json data to the request request httpBody   jsonData  let task   URLSession shared dataTask with  request    data  response  error in     guard let data   data  error    nil else           print error  localizedDescription     No data           return           let responseJSON   try  JSONSerialization jsonObject with  data  options          if let responseJSON   responseJSON as   String  Any            print responseJSON           task resume     or try a convenient way Alamofire

[json] How to make HTTP Post request with JSON body in Swift

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