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我正在建立一個使用MySQL服務器和PHP文件上傳到FTP的密碼應用程序的簡單登錄。我一直在嘗試許多不同的方式來讓連接在模擬器上工作，但迄今爲止無濟於事。我正在使用Swift 3.0和XCode 8.3.2。我犯了一個錯誤，但我不知道在哪裏！另外，我已經在info.plist中設置允許任意負載爲YES。任何幫助表示讚賞。
來自XCode的MySQL服務器查詢
在很多教程中，我看到我看到過這個彈出窗口，我從來沒有得到過。 
在我Login.swift
import UIKit
class Login: UITableViewController {
@IBOutlet weak var txtUsername: UITextField!
@IBOutlet weak var txtPassword: UITextField!
@IBOutlet weak var loginView: UIButton!
@IBOutlet weak var btnPasswordView: UIButton!
var passwordString:String!
var usernameString:String!
override func viewDidLoad() {
super.viewDidLoad()
passwordViewConfig()
}
//Function PasswordView.
func passwordViewConfig() {
txtPassword.isSecureTextEntry = true
btnPasswordView.setImage(UIImage(named: "EyeClosedIcon"), for: UIControlState.normal)
}
//Action change image PasswordView
@IBAction func btnPasswordViewAction(_ sender: Any) {
passwordString = txtPassword.text
if btnPasswordView.currentImage!.isEqual(UIImage(named: "EyeClosedIcon")) {
btnPasswordView.setImage(UIImage(named: "EyeOpenIcon"), for: UIControlState.normal)
txtPassword.isSecureTextEntry = false
txtPassword.text = nil
txtPassword.text = passwordString
} else {
btnPasswordView.setImage(UIImage(named: "EyeClosedIcon"), for: UIControlState.normal)
txtPassword.isSecureTextEntry = true
txtPassword.text = passwordString
}
}
//Redirect select cell to textField
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
if indexPath.section == 0 && indexPath.row == 0 {
txtUsername.becomeFirstResponder()
}
if indexPath.section == 0 && indexPath.row == 1 {
txtPassword.becomeFirstResponder()
}
}
//Function config Return key
func textFieldShouldReturn(textField: UITextField) -> Bool {
if textField == txtUsername {
textField.resignFirstResponder()
txtPassword.becomeFirstResponder()
}
if textField == txtPassword {
usernameString = txtUsername.text
passwordString = txtPassword.text
if usernameString.isEmpty || passwordString.isEmpty {
textField.resignFirstResponder()
txtUsername.becomeFirstResponder()
} else {
loginAction(self)
}
}
return true
}
//Function config background image login button
func loginViewConfig() {
}
@IBAction func loginAction(_ sender: Any) {
usernameString = txtUsername.text
passwordString = txtPassword.text
if usernameString.isEmpty || passwordString.isEmpty {
let alertAction:UIAlertAction = UIAlertAction(title: "Close", style: UIAlertActionStyle.default, handler: { (alert) -> Void in
self.txtUsername.becomeFirstResponder()
})
alertView(title: "Error !", message: "Please fill in all fields", alertStyle: UIAlertControllerStyle.alert, alertAction: alertAction)
} else {
queryToServerLogin()
}
}
func queryToServerLogin() {
let url:String = "here is URL to my login.php file"
/*
$username = htmlentities($_GET['username']);
$password = md5(htmlentities($_GET['username']));
*/
let postString:String = "username=\(usernameString)&password=\(passwordString)"
print ("username=\(usernameString!)&password=\(passwordString!)")
self.queryToServer(urlSource: url, postString: postString) { (dataResult, errorResult) ->() in
if errorResult != nil {
let alertAction:UIAlertAction = UIAlertAction(title: "Close", style: UIAlertActionStyle.default, handler: nil)
self.alertView(title: "Error !", message: "Could not connect to server", alertStyle: UIAlertControllerStyle.alert, alertAction: alertAction)
} else {
self.extractDataWithNSDictionary(data: dataResult! as NSData, result: { (statusResult, messageResult, errorResult) ->() in
if errorResult !== nil {
print(errorResult as Any)
let alertAction:UIAlertAction = UIAlertAction(title: "Close", style: UIAlertActionStyle.default, handler: nil)
self.alertView(title: "Error !", message: "Could not query to server.", alertStyle: UIAlertControllerStyle.alert, alertAction: alertAction)
} else {
if statusResult == "success" {
let alertAction:UIAlertAction = UIAlertAction(title: "Close", style: UIAlertActionStyle.default, handler: nil)
self.alertView(title: "Success !", message: messageResult!, alertStyle: UIAlertControllerStyle.alert, alertAction: alertAction)
} else {
if statusResult == "success" {
let alertAction:UIAlertAction = UIAlertAction(title: "Close", style: UIAlertActionStyle.default, handler: nil)
self.alertView(title: "Error !", message: messageResult!, alertStyle: UIAlertControllerStyle.alert, alertAction: alertAction)
}
}
}
}
)}
}
}
}
在我Extensions.swift
import Foundation
import UIKit
extension UIViewController {
func makeImageViewWithColor(_ color: UIColor) -> UIImage {
let rect: CGRect = CGRect (x: 0, y: 0, width: 1, height: 1)
color.setFill()
UIRectFill(rect)
let image:UIImage = UIGraphicsGetImageFromCurrentImageContext()!
UIGraphicsEndImageContext()
return image
}
//Function Alert View
func alertView(title:String, message:String, alertStyle:UIAlertControllerStyle, alertAction:UIAlertAction) {
let alert:UIAlertController = UIAlertController(title: title, message: message, preferredStyle: alertStyle)
alert.addAction(alertAction)
self.present(alert, animated: true, completion: nil)
}
//Function query to server
func queryToServer(urlSource:String, postString:String, result:@escaping (Data?, Error?) ->()) {
let url = URL(string: urlSource)!
var request = URLRequest (url: url, cachePolicy: .reloadIgnoringLocalAndRemoteCacheData, timeoutInterval: 10)
request.httpMethod = "POST";
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.httpBody = postString.data(using: .utf8)
let session = URLSession.shared
session.dataTask(with: request) { (data, response, error) in
DispatchQueue.main.async {
result(data, error)
}
}.resume()
}
//Function extract data
func extractDataWithNSDictionary(data:NSData, result:(_ statusResult:String?, _ messageResult:String?, _ errorResult:NSError?) ->()){
var json:NSDictionary!
var errorParse:NSError!
do {
json = try JSONSerialization.jsonObject(with: data as Data, options: JSONSerialization.ReadingOptions.mutableContainers) as! NSDictionary
} catch let error as NSError {
errorParse = error
json = nil
}
if errorParse != nil {
result(nil, nil, errorParse)
} else {
let resultStatus:String = json["status"] as! String
let resultMessage:String = json["message"] as! String
result(resultStatus, resultMessage, nil)
}
}
}
然後在我的FTP根我有沒有工作
[section]
dbhost = mysql url
dbuser = username
dbpass = password
dbname = database name
另外一個mysql.php
<?php
class mysql
{
var $dbhost = null;
var $dbuser = null;
var $dbpass = null;
var $dbname = null;
var $conn = null;
var $result = null;
function _construct()
{
$mysqlfile = parse_ini_file('MySQL.ini');
$this->dbhost = $mysqlfile['dbhost'];
$this->dbuser = $mysqlfile['dbuser'];
$this->dbpass = $mysqlfile['dbpass'];
$this->dbname = $mysqlfile['dbname'];
}
//Function connect to sql
public function connection() {
//$this->conn = new mysqli($this->dbhost, $this->dbuser, $this->dbpass, $this->dbname);
$this->conn = new mysqli('mysql url', 'username', 'password', 'database name');
if (mysqli_connect_error()){
return false;
}
mysqli_set_charset($this->conn, 'utf8');
return true;
}
//Function close sql
public function closeConecttion() {
if ($this->conn !=null) {
mysqli_close($this->conn);
}
}
//function check username does not exits
public function checkUsername($username) {
$sql = "SELECT authentication_username FROM time_employee WHERE authentication_username = '$username'";
$this->result = mysqli_query($this->conn, $sql);
if (mysqli_num_rows($this->result) <= 0) {
return false;
}
return true;
}
//function check password username
public function checkPasswordUsername($username, $password) {
$sql = "SELECT authentication_username, authentication_password FROM time_employee WHERE authentication_username = '$username'";
$this->result = mysqli_query($this->conn, $sql);
$row = mysqli_fetch_array($this->result);
if ($row['password'] != $password) {
return false;
}
return true;
}
}
而一個一個的login.php文件MySQL.ini
<?php
include_once('mysql.php');
$mysql = new mysql();
$username = htmlentities($_REQUEST['username']);
$password = md5(htmlentities($_REQUEST['password']));
$resultValue = array();
//Function check connect to database
if ($mysql->connection()) {
//Function check username exist
//if !mysql->checkUsername($username) return false
if(!$mysql->checkUsername($username)) {
$resultValue['status'] = "error";
$resultValue['message'] = "username does not exist";
echo json_encode($resultValue);
} else {
//Function check password
//If !$mysql->checkPasswordUsername($username, $password) return false
if (!$mysql->checkPasswordUsername($username, $password)) {
$resultValue['status'] = "error";
$resultValue['message'] = "Incorrect password";
echo json_encode($resultValue);
} else {
$resultValue['status'] = "success";
$resultValue['message'] = "Logged in successfully";
echo json_encode($resultValue);
}
}
} else {
$resultValue['status'] = "error";
$resultValue['message'] = "could not connect to database";
echo json_encode($resultValue);
}
?>
<?php exit; ?>
你會得到什麼錯誤？ –
真的沒有錯誤，我聽說應該彈出模擬器彈出，所以我可以連接到服務器，但它永遠不會出現。 –
你真的需要從這個問題中刪除很多無關的信息。只要說出哪一部分代碼失敗了，你的輸入是什麼以及結果如何。當你在queryToServerLogin中得到一個errorResult時，你是否檢查過它是什麼？ – Spads