JSONボディを使用してHTTPポストリクエストを作成しようとしています。

NSdictionnaryをHTTPリクエストの本文に追加できるようにする方法。

これが私のコードですが、正しく機能していないようです。

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()

これを試して、

// 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()

または、便利な方法でAlamofireを試してください

エラーをキャプチャするSwiftのHTTP Post

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 -> \(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)
}

Swift 4および5

HTTP POST requestURLSession APISwift 4での使用

func postRequest(username: String, password: String, completion: @escaping ([String: Any]?, Error?) -> 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)")
    }
}

Alamofireの使用：

let parameters = ["name": "username", "password": "password123"]
Alamofire.request("https://www.myserver.com/api/login", method: .post, parameters: parameters, encoding: URLEncoding.httpBody)

次のSwift 5 Playgroundコードは、JSONSerializationand を使用して問題を解決する可能な方法を示しています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()

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)&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()

2019年に更新された完璧なnRewik回答：

辞書を作る：

let dic = [
    "username":u,
    "password":p,
    "gems":g ]

このように組み立てます：

var jsonData:Data?
do {
    jsonData = try JSONSerialization.data(
      withJSONObject: dic,
      options: .prettyPrinted)
} catch {
    print(error.localizedDescription)
}

これとまったく同じようにリクエストを作成します。「投稿」であることに注意してください

let url = URL(string: "https://blah.com/server/dudes/decide/this")!
var request = URLRequest(url: url)

request.setValue("application/json; charset=utf-8",
     forHTTPHeaderField: "Content-Type")
request.setValue("application/json; charset=utf-8",
     forHTTPHeaderField: "Accept") 
request.httpMethod = "POST"
request.httpBody = jsonData

次に、ネットワークエラー（帯域幅がないなど）またはサーバーからのエラー応答のいずれかをチェックして送信します。

let task = URLSession.shared.dataTask(with: request) { data, response, error in
    guard let data = data, error == nil else {
        // check for fundamental networking error
        print("fundamental networking 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)")
    }

    let responseString = String(data: data, encoding: .utf8)
    print("responseString = \(responseString)")

幸いなことに、今ではそれほど簡単です。

あなたはこのようなことをすることができます：

func HTTPPostJSON(url: String,  data: NSData,
    callback: (String, String?) -> 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?) -> Void) {
        let task = NSURLSession.sharedSession()
            .dataTaskWithRequest(request) {
                (data, response, error) -> Void in
                if (error != nil) {
                    callback("", error.localizedDescription)
                } else {
                    callback(NSString(data: data,
                        encoding: NSUTF8StringEncoding)! as String, nil)
                }
        }

        task.resume()
}
//use
var data :Dictionary<String, AnyObject> = yourDictionaryData<--
var requestNSData:NSData = NSJSONSerialization.dataWithJSONObject(request, options:NSJSONWritingOptions(0), error: &err)!
HTTPPostJSON("http://yourPosturl..", data: requestNSData) { (response, error) -> Void in
    if error != nil{
        //error
        return;
    }

    println(response);
}

ここにSWIFT 5人：

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()

var request = URLRequest(url: URL(string: "http://yogpande.apphb.com/api/my/posttblhouse")!)
        request.httpMethod = "POST"
        let postString = "email=testname@gmail.com&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()
    }

Swift4-Appleソリューション「POST」および「Codable」

request.httpmethod = "Post"およびCodable Stuctsを使用してWebサイトにデータをアップロードする ：

@see：リスト2 URLリクエストの構成

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 ...

    // 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 -> \(error)")
        }
    }

    task.resume()

    var request = URLRequest(url: URL(string:  "your URL")!)
    request.httpMethod = "POST"


    let postString =  String(format: "email=%@&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()

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")
        }
    }

Alamofireのようなサードパーティのフレームワークを使用しないという私の試みで見つかったいくつかの回答の組み合わせ。

    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()

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!)&email=\(email_txt.text!)&mobile=\(mobile_txt.text!)&password=\(password_txt.text!)"
        print("poststring-->>",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-->",jsondata)
                }
            }
            catch
            {
                print("error-->",error.localizedDescription)
            }
        };
        task.resume()

    }
}
`GET METHOD`
import UIKit

class ViewController: UIViewController,UITableViewDelegate,UITableViewDataSource {
    var dataarray = [[String: Any]]()
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return dataarray.count
    }
    func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
        return 450.0
    }

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> 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---->",jsonResponse) //Response result

                self.dataarray = jsonResponse
                DispatchQueue.main.async {



                    self.apiTable.reloadData()
                }
            } catch let parsingError {
                print("Error", parsingError)
            }
        }
        task.resume()
    }

}