ログインの際に、URLSessionでやりとりをしたいのです。
以下、ソースです。
Swift
1import UIKit 2 3class loginViewController: UIViewController, UITextFieldDelegate { 4 5 struct loginResponse: Codable { 6 let status: String 7 let message: String 8 let partyId: String 9 } 10 11 @IBOutlet weak var partycodeTextField: UITextField! 12 @IBOutlet weak var nameTextField: UITextField! 13 14 //UserDefaultsのインスタンスを作る 15 let UD = UserDefaults.standard 16 17 override func viewDidLoad() { 18 super.viewDidLoad() 19 //入れさせた値をUserDefaultsで使うための作業 20 partycodeTextField.delegate = self 21 UD.register(defaults: ["CODE": ""]) 22 nameTextField.delegate = self 23 UD.register(defaults: ["NAME": ""]) 24 } 25 26 override func didReceiveMemoryWarning() { 27 super.didReceiveMemoryWarning() 28 } 29 30//直接関係ないので省略 31 32 @IBAction func loginTapped(_ sender: Any) { 33 34 //入力させる 35 let partyCode = partycodeTextField.text 36 let name = nameTextField.text 37 38 //不備があった時 39 if(partyCode == "" || name == "") { 40 //アラート 41 displayMyAlertMessage(userMessage: "パーティーコード、お名前を入力してください") 42 return 43 } 44 45 //sessionの呼び出し URLは伏せてます 46 let dict = ["partycode": self.partycodeTextField.text!, "nickname": self.nameTextField.text!, "firstFlag": false] as [String : Any] 47 loginSession(url: "http://xxxxxxxx/AppliManage/login", parameters: dict) 48 performSegue(withIdentifier: "Segue2", sender: nil) 49 } 50 51 } 52 53 //ここからloginの処理を書いてる 54 func loginSession(url urlString: String, parameters: [String: Any]) { 55 let url = URL(string: urlString) 56 var request = URLRequest(url: url!) 57 request.httpMethod = "POST" 58 59 let parametersString: String = parameters.enumerated().reduce("?") { (input, tuple) -> String in 60 switch tuple.element.value { 61 case let int as Int: return input + tuple.element.key + "=" + String(int) + (parameters.count - 1 > tuple.offset ? "&" : "") 62 case let string as String: return input + tuple.element.key + "=" + string + (parameters.count - 1 > tuple.offset ? "&" : "") 63 default: return input 64 } 65 } 66 67 request.httpBody = parametersString.data(using: String.Encoding.utf8) 68 let task = URLSession.shared.dataTask(with: request) { data, response, error in 69 if error == nil, let data = data, let response = response as? HTTPURLResponse { 70 print(response) 71 do { 72 let json = try JSONDecoder().decode(loginResponse.self, from: data) 73 print(json.status) 74 print(json.message) 75 print(json.partyId) 76 } catch { 77 print("Serialize Error") 78 } 79 } else { 80 print(error ?? "Error") 81 } 82 } 83 task.resume() 84 } 85 86//ダイアログ 87 func displayMyAlertMessage(userMessage: String) { 88 let wrongAlert = UIAlertController(title: "エラー", message: userMessage, preferredStyle: UIAlertControllerStyle.alert) 89 let itsOK = UIAlertAction(title: "OK", style: UIAlertActionStyle.default){ 90 action in return 91 } 92 93 wrongAlert.addAction(itsOK) 94 self.present(wrongAlert, animated: true, completion: nil) 95 } 96 97} 98
ここで、do文の中を単にprint(json)にすると、
{ Status Code: 200, Headers { Connection = ( "Keep-Alive" ); "Content-Encoding" = ( gzip ); "Content-Language" = ( "en-US" ); "Content-Type" = ( "application/json;charset=UTF-8" ); Date = ( "Fri, 12 Oct 2018 08:01:55 GMT" ); "Keep-Alive" = ( "timeout=60, max=100" ); Server = ( "Apache-Coyote/1.1" ); "Transfer-Encoding" = ( Identity ); Vary = ( "Accept-Encoding" ); } { "status":"error", "message":"パーティコードが存在しません" }
ってなりますし、ソースコードの通りJSONDecoderを使うと
{ Status Code: 200, Headers { Connection = ( "Keep-Alive" ); "Content-Encoding" = ( gzip ); "Content-Language" = ( "en-US" ); "Content-Type" = ( "application/json;charset=UTF-8" ); Date = ( "Fri, 12 Oct 2018 08:01:55 GMT" ); "Keep-Alive" = ( "timeout=60, max=100" ); Server = ( "Apache-Coyote/1.1" ); "Transfer-Encoding" = ( Identity ); Vary = ( "Accept-Encoding" ); } } Serialize Error
ってなります。
求めている回答は
{ "status":"success", "message":"", "partyId":"XXX" }
となってpartyIdを取り出したいのです。
追記。
catchの中身を
print("Serialize Error", error.localizedDescription)
としたら、
Serialize Error The data couldn’t be read because it is missing. ```となって、ないよー!と言われてるんですよね。 でも、status codeが200なので、ちゃんと通信自体はできてるってことですよね。 そこでJSONデータのやりとりに失敗したっていうことなんだろうか…
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