SwiftでHTTPリクエスト+基本認証を行う方法

Question 1

基本認証を備えたRESTFullサービスがあり、iOS + swiftからそれを呼び出したい。このリクエストに対して資格を提供する方法と場所を教えてください。

私のコード（申し訳ありませんが、iOS / obj-c / swiftを学び始めました）：

class APIProxy: NSObject {
var data: NSMutableData = NSMutableData()

func connectToWebApi() {
    var urlPath = "http://xx.xx.xx.xx/BP3_0_32/ru/hs/testservis/somemethod"
    NSLog("connection string \(urlPath)")
    var url: NSURL = NSURL(string: urlPath)
    var request = NSMutableURLRequest(URL: url)
    let username = "hs"
    let password = "1"
    let loginString = NSString(format: "%@:%@", username, password)
    let loginData: NSData = loginString.dataUsingEncoding(NSUTF8StringEncoding)
    let base64LoginString = loginData.base64EncodedStringWithOptions(NSDataBase64EncodingOptions.fromMask(0))
    request.setValue(base64LoginString, forHTTPHeaderField: "Authorization")

    var connection: NSURLConnection = NSURLConnection(request: request, delegate: self)

    connection.start()
}


//NSURLConnection delegate method
func connection(connection: NSURLConnection!, didFailWithError error: NSError!) {
    println("Failed with error:\(error.localizedDescription)")
}

//NSURLConnection delegate method
func connection(didReceiveResponse: NSURLConnection!, didReceiveResponse response: NSURLResponse!) {
    //New request so we need to clear the data object
    self.data = NSMutableData()
}

//NSURLConnection delegate method
func connection(connection: NSURLConnection!, didReceiveData data: NSData!) {
    //Append incoming data
    self.data.appendData(data)
}

//NSURLConnection delegate method
func connectionDidFinishLoading(connection: NSURLConnection!) {
    NSLog("connectionDidFinishLoading");
}

}

Question 2

次のURLRequestSwift 3のように、インスタンスに認証情報を提供します。

let username = "user"
let password = "pass"
let loginString = String(format: "%@:%@", username, password)
let loginData = loginString.data(using: String.Encoding.utf8)!
let base64LoginString = loginData.base64EncodedString()

// create the request
let url = URL(string: "http://www.example.com/")!
var request = URLRequest(url: url)
request.httpMethod = "POST"
request.setValue("Basic \(base64LoginString)", forHTTPHeaderField: "Authorization")

// fire off the request
// make sure your class conforms to NSURLConnectionDelegate
let urlConnection = NSURLConnection(request: request, delegate: self)

またはNSMutableURLRequestSwift 2の場合：

// set up the base64-encoded credentials
let username = "user"
let password = "pass"
let loginString = NSString(format: "%@:%@", username, password)
let loginData: NSData = loginString.dataUsingEncoding(NSUTF8StringEncoding)!
let base64LoginString = loginData.base64EncodedStringWithOptions([])

// create the request
let url = NSURL(string: "http://www.example.com/")
let request = NSMutableURLRequest(URL: url)
request.HTTPMethod = "POST"
request.setValue("Basic \(base64LoginString)", forHTTPHeaderField: "Authorization")

// fire off the request
// make sure your class conforms to NSURLConnectionDelegate
let urlConnection = NSURLConnection(request: request, delegate: self)

Question 3

//認証ベース64エンコード文字列を作成します

    let PasswordString = "\(txtUserName.text):\(txtPassword.text)"
    let PasswordData = PasswordString.dataUsingEncoding(NSUTF8StringEncoding)
    let base64EncodedCredential = PasswordData!.base64EncodedStringWithOptions(NSDataBase64EncodingOptions.Encoding64CharacterLineLength)
    //let base64EncodedCredential = PasswordData!.base64EncodedStringWithOptions(nil)

//認証URLを作成します

    let urlPath: String = "http://...../auth"
    var url: NSURL = NSURL(string: urlPath)

//基本認証リクエストを作成して初期化します

    var request: NSMutableURLRequest = NSMutableURLRequest(URL: url)
    request.setValue("Basic \(base64EncodedCredential)", forHTTPHeaderField: "Authorization")
    request.HTTPMethod = "GET"

//以下のいずれかの方法を使用できます

// 1 NSURLConnectionDataDelegateを使用したURLリクエスト

    let queue:NSOperationQueue = NSOperationQueue()
    let urlConnection = NSURLConnection(request: request, delegate: self)
    urlConnection.start()

// 2 AsynchronousRequestを使用したURLリクエスト

    NSURLConnection.sendAsynchronousRequest(request, queue: NSOperationQueue.mainQueue()) {(response, data, error) in
        println(NSString(data: data, encoding: NSUTF8StringEncoding))
    }

// 2 json出力のAsynchronousRequestを使用したURLリクエスト

    NSURLConnection.sendAsynchronousRequest(request, queue: NSOperationQueue.mainQueue(), completionHandler:{ (response: NSURLResponse!, data: NSData!, error: NSError!) -> Void in
        var err: NSError
        var jsonResult: NSDictionary = NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers, error: nil) as NSDictionary
        println("\(jsonResult)")
    })

// 3 SynchronousRequestを使用したURLリクエスト

    var response: AutoreleasingUnsafePointer<NSURLResponse?>=nil
    var dataVal: NSData =  NSURLConnection.sendSynchronousRequest(request, returningResponse: response, error:nil)
    var err: NSError
    var jsonResult: NSDictionary = NSJSONSerialization.JSONObjectWithData(dataVal, options: NSJSONReadingOptions.MutableContainers, error: nil) as NSDictionary
    println("\(jsonResult)")

// 4 NSURLSessionを使用したURLリクエスト

    let config = NSURLSessionConfiguration.defaultSessionConfiguration()
    let authString = "Basic \(base64EncodedCredential)"
    config.HTTPAdditionalHeaders = ["Authorization" : authString]
    let session = NSURLSession(configuration: config)

    session.dataTaskWithURL(url) {
        (let data, let response, let error) in
        if let httpResponse = response as? NSHTTPURLResponse {
            let dataString = NSString(data: data, encoding: NSUTF8StringEncoding)
            println(dataString)
        }
    }.resume()

//サーバーリクエストGETリクエスト時にリクエストを変更すると、致命的なエラーが発生する可能性があります。HTTPMethod= "POST"

Question 4

迅速4：

let username = "username"
let password = "password"
let loginString = "\(username):\(password)"

guard let loginData = loginString.data(using: String.Encoding.utf8) else {
    return
}
let base64LoginString = loginData.base64EncodedString()

request.httpMethod = "GET"
request.setValue("Basic \(base64LoginString)", forHTTPHeaderField: "Authorization")

Question 5

Swift 2の場合：

extension NSMutableURLRequest {
    func setAuthorizationHeader(username username: String, password: String) -> Bool {
        guard let data = "\(username):\(password)".dataUsingEncoding(NSUTF8StringEncoding) else { return false }

        let base64 = data.base64EncodedStringWithOptions([])
        setValue("Basic \(base64)", forHTTPHeaderField: "Authorization")
        return true
    }
}

Question 6

SWIFT 3とAPACHEシンプルAuthをわかりやすく説明します。

func urlSession(_ session: URLSession, task: URLSessionTask,
                didReceive challenge: URLAuthenticationChallenge,
                completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {

    let credential = URLCredential(user: "test",
                                   password: "test",
                                   persistence: .none)

    completionHandler(.useCredential, credential)


}

Question 7

アプリに実装しているいくつかの自動化された電子メールについてMailGunにPOSTしようとしたときに同様の問題が発生しました。

大きなHTTP応答でこれを適切に機能させることができました。Keys.plistに完全なパスを入れて、コードをgithubにアップロードし、一部の引数を変数に分解して、プログラムで後で設定できるようにします。

// Email the FBO with desired information
// Parse our Keys.plist so we can use our path
var keys: NSDictionary?

if let path = NSBundle.mainBundle().pathForResource("Keys", ofType: "plist") {
    keys = NSDictionary(contentsOfFile: path)
}

if let dict = keys {
    // variablize our https path with API key, recipient and message text
    let mailgunAPIPath = dict["mailgunAPIPath"] as? String
    let emailRecipient = "bar@foo.com"
    let emailMessage = "Testing%20email%20sender%20variables"

    // Create a session and fill it with our request
    let session = NSURLSession.sharedSession()
    let request = NSMutableURLRequest(URL: NSURL(string: mailgunAPIPath! + "from=FBOGo%20Reservation%20%3Cscheduler@<my domain>.com%3E&to=reservations@<my domain>.com&to=\(emailRecipient)&subject=A%20New%20Reservation%21&text=\(emailMessage)")!)

    // POST and report back with any errors and response codes
    request.HTTPMethod = "POST"
    let task = session.dataTaskWithRequest(request, completionHandler: {(data, response, error) in
        if let error = error {
            print(error)
        }

        if let response = response {
            print("url = \(response.URL!)")
            print("response = \(response)")
            let httpResponse = response as! NSHTTPURLResponse
            print("response code = \(httpResponse.statusCode)")
        }
    })
    task.resume()
}

Mailgunパスは、次の値を持つmailgunAPIPathという文字列としてKeys.plistにあります。

https://API:key-<my key>@api.mailgun.net/v3/<my domain>.com/messages?

これが、POSTリクエストにサードパーティのコードを使用しないようにしようとしている人にソリューションが提供されることを願っています！

Question 8

私の解決策は次のように機能します：

import UIKit


class LoginViewController: UIViewController, NSURLConnectionDataDelegate {

  @IBOutlet var usernameTextField: UITextField
  @IBOutlet var passwordTextField: UITextField

  @IBAction func login(sender: AnyObject) {
    var url = NSURL(string: "YOUR_URL")
    var request = NSURLRequest(URL: url)
    var connection = NSURLConnection(request: request, delegate: self, startImmediately: true)

  }

  func connection(connection:NSURLConnection!, willSendRequestForAuthenticationChallenge challenge:NSURLAuthenticationChallenge!) {

    if challenge.previousFailureCount > 1 {

    } else {
        let creds = NSURLCredential(user: usernameTextField.text, password: passwordTextField.text, persistence: NSURLCredentialPersistence.None)
        challenge.sender.useCredential(creds, forAuthenticationChallenge: challenge)

    }

}

  func connection(connection:NSURLConnection!, didReceiveResponse response: NSURLResponse) {
    let status = (response as NSHTTPURLResponse).statusCode
    println("status code is \(status)")
    // 200? Yeah authentication was successful
  }


  override func viewDidLoad() {
    super.viewDidLoad()

  }

  override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()

  }  
}

このクラスをViewControllerの実装として使用できます。フィールドをIBOutlet注釈付き変数に、ボタンをIBAction注釈付き関数に接続します。

説明：関数ログインでは、NSURL、NSURLRequest、NSURLConnectionを使用してリクエストを作成します。ここで重要なのは、このクラス（自己）を参照するデリゲートです。代理人の電話を受けるには、

プロトコルNSURLConnectionDataDelegateをクラスに追加します。
プロトコルの機能「connection：willSendRequestForAuthenticationChallenge」を実装します。これは、リクエストに資格情報を追加するために使用されます
プロトコルの機能「connection：didReceiveResponse」を実装します。これにより、http応答ステータスコードがチェックされます

Question 9

ログインボタンをクリックしてjsonを呼び出しています

@IBAction func loginClicked(sender : AnyObject){

var request = NSMutableURLRequest(URL: NSURL(string: kLoginURL)) // Here, kLogin contains the Login API.


var session = NSURLSession.sharedSession()

request.HTTPMethod = "POST"

var err: NSError?
request.HTTPBody = NSJSONSerialization.dataWithJSONObject(self.criteriaDic(), options: nil, error: &err) // This Line fills the web service with required parameters.
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue("application/json", forHTTPHeaderField: "Accept")

var task = session.dataTaskWithRequest(request, completionHandler: {data, response, error -> Void in
 //   println("Response: \(response)")
var strData = NSString(data: data, encoding: NSUTF8StringEncoding)
println("Body: \(strData)")       
var err1: NSError?
var json2 = NSJSONSerialization.JSONObjectWithData(strData.dataUsingEncoding(NSUTF8StringEncoding), options: .MutableLeaves, error:&err1 ) as NSDictionary

println("json2 :\(json2)")

if(err) {
    println(err!.localizedDescription)
}
else {
    var success = json2["success"] as? Int
    println("Succes: \(success)")
}
})

task.resume()

}

ここでは、パラメータ用に別の辞書を作成しました。

var params = ["format":"json", "MobileType":"IOS","MIN":"f8d16d98ad12acdbbe1de647414495ec","UserName":emailTxtField.text,"PWD":passwordTxtField.text,"SigninVia":"SH"]as NSDictionary
     return params
}