发帖请求后发回回复

时间：2017-01-27 10:15:33

标签： ios swift post

首先，我不认为这是可能的，但我有一段代码向数据库发出post请求，我想根据发布的数据得到响应。我的意思是，如果变量放在数据库中，响应将是＆＃34; ok＆＃34;否则，它将是＆＃34; no＆＃34;。

我的帖子请求如下：

let postDataURL = "https://www.webpage.com/login_app.php"
let url: NSURL = NSURL(string: postDataURL)!
let request: NSMutableURLRequest = NSMutableURLRequest(url:url as URL)

let paramString = "precio=\(precio)&texto=\(texto)&user=\(user)&l_origen=\(l_origen)&l_destino=\(l_destino)&num_pal=\(num_pal)"
request.httpMethod = "POST"
request.httpBody = paramString.data(using: String.Encoding.utf8)

NSURLConnection.sendAsynchronousRequest(request as URLRequest, queue: OperationQueue.main) { (response, data, error) in
    print(response!)

    if let httpResponse = response as? HTTPURLResponse {
        let statusCode = httpResponse.statusCode

        if statusCode==200 {
            print("Connection Successful")    
        } else {
            print("Connection Failed (!200)")
        }
    }
}

然后，在php方面，我可能会有类似

的内容 
if (affected_rows > 0){
    $response = "ok";
} else {
    $response = "no";
}

但在那之后，我不知道php代码如何重新连接到设备以给它响应。

非常感谢您的时间。

修改

失败时发送的响应：

Optional(<!DOCTYPE html>

<html>
<head>
<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE11">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Log in - Siens Translation</title>

.
.
.

</body>
</html>
)

这基本上是页面的html部分。

PHP部分 

<!DOCTYPE html>

<?php
require "class.logsys.php";

header('Content-Type: text/html; charset=utf-8' );
ini_set('default_charset', 'utf-8');

error_reporting(E_ERROR | E_WARNING | E_PARSE);

session_start();
\Fr\LS::init();

if(isset($_POST['action_login'])){
  $identification = $_POST['login'];
  $password = $_POST['password'];
  if($identification == "" || $password == ""){
    $msg = array("Error", "Username / Password Wrong !");
  }else{
    $login = \Fr\LS::login($identification, $password,     isset($_POST['remember_me']));
    if($login === false){
      $msg = array("Error", "Username / Password Wrong !");
    }else if(is_array($login) && $login['status'] == "blocked"){
      $msg = array("Error", "Too many login attempts. You can attempt login     after ". $login['minutes'] ." minutes (". $login['seconds'] ." seconds)");
    }
  }
}


  $precio = $_POST['precio']; 

  $texto = $_POST['texto'];

  $texto_ant = $_POST['texto_ant']; 

  $user = $_POST['user']; 

  $pass = $_POST['pass'];

  $l_origen = $_POST['l_origen']; 

  $l_destino = $_POST['l_destino'];

  $num_pal = $_POST['num_pal']; 

  $modificado = $_POST['modificado'];

$login = \Fr\LS::login($user, $pass, false, false);
if($login === true){

 define('HOST','');
 define('USER','');
 define('PASS','');
 define('DB','');

 $con = mysqli_connect(HOST,USER,PASS,DB) or die('Unable to Connect');

mysqli_set_charset( $con, 'utf8');

 if($modificado!='Si'){

 $sql = "UPDATE users SET precio='$precio', text_cli='$texto',     l_origen='$l_origen', l_destino='$l_destino', num_pal='$num_pal' WHERE     username='$user' AND text_cli='' LIMIT 1 ";
  mysqli_query($con,$sql);
  echo '{"success":true}';

 if(mysqli_affected_rows($con)==0){
  $sql2 = "UPDATE users SET precio2='$precio', text_cli2='$texto',  l_origen2='$l_origen', l_destino2='$l_destino', num_pal2='$num_pal' WHERE  username='$user' AND text_cli2='' LIMIT 1 ";
  mysqli_query($con,$sql2);
 } 

 if(mysqli_affected_rows($con)==0) {
  $sql3 = "UPDATE users SET precio3='$precio', text_cli3='$texto',     l_origen3='$l_origen', l_destino3='$l_destino', num_pal3='$num_pal' WHERE     username='$user' AND text_cli3='' LIMIT 1 ";
  mysqli_query($con,$sql3);
 }

 if(mysqli_affected_rows($con)==0) {
  $sql4 = "UPDATE users SET precio4='$precio', text_cli4='$texto',  l_origen4='$l_origen', l_destino4='$l_destino', num_pal4='$num_pal' WHERE  username='$user' AND text_cli4='' LIMIT 1 ";
  mysqli_query($con,$sql4);
 }

 if(mysqli_affected_rows($con)==0) {
  $sql5 = "UPDATE users SET precio5='$precio', text_cli5='$texto',  l_origen5='$l_origen', l_destino5='$l_destino', num_pal5='$num_pal' WHERE username='$user' AND text_cli5='' LIMIT 1 ";
  mysqli_query($con,$sql5);
 }

 if(mysqli_affected_rows($con)==0) {
  $sql6 = "UPDATE users SET precio6='$precio', text_cli6='$texto', l_origen6='$l_origen', l_destino6='$l_destino', num_pal6='$num_pal' WHERE username='$user' AND text_cli6='' LIMIT 1 ";
  mysqli_query($con,$sql6);
 }

 if(mysqli_affected_rows($con)==0) {
  $sql7 = "UPDATE users SET precio7='$precio', text_cli7='$texto', l_origen7='$l_origen', l_destino7='$l_destino', num_pal7='$num_pal' WHERE username='$user' AND text_cli7='' LIMIT 1 ";
  mysqli_query($con,$sql7);
 }

 if(mysqli_affected_rows($con)==0) {
  $sql8 = "UPDATE users SET precio8='$precio', text_cli8='$texto', l_origen8='$l_origen', l_destino8='$l_destino', num_pal8='$num_pal' WHERE    username='$user' AND text_cli8='' LIMIT 1 ";
  mysqli_query($con,$sql8);
 }

 if(mysqli_affected_rows($con)==0) {
  $sql9 = "UPDATE users SET precio9='$precio', text_cli9='$texto', l_origen9='$l_origen', l_destino9='$l_destino', num_pal9='$num_pal' WHERE username='$user' AND text_cli9='' LIMIT 1 ";
  mysqli_query($con,$sql9);
 }

 if(mysqli_affected_rows($con)==0) {
  $sql10 = "UPDATE users SET precio10='$precio', text_cli10='$texto', l_origen10='$l_origen', l_destino10='$l_destino', num_pal10='$num_pal' WHERE username='$user' AND text_cli10='' LIMIT 1 ";
  mysqli_query($con,$sql10);
  echo '{"success":false}';
 }

 $sql11 = "UPDATE users SET text_cli='$texto' WHERE ((l_origen='$l_origen' || l_origen2='$l_origen') AND l_destino='$l_destino' AND text_cli='' AND role='trad_app') LIMIT 1 ";

 mysqli_query($con,$sql11);

 if(mysqli_affected_rows($con)==0){
   $sql12 = "UPDATE users SET text_cli2='$texto' WHERE ((l_origen='$l_origen' || l_origen2='$l_origen') AND l_destino='$l_destino' AND text_cli2='' AND role ='trad_app') LIMIT 1 ";
   mysqli_query($con,$sql12);
 }

 if(mysqli_affected_rows($con)==0){
   $sql13 = "UPDATE users SET text_cli3='$texto' WHERE ((l_origen='$l_origen' || l_origen2='$l_origen') AND l_destino='$l_destino' AND text_cli3='' AND role ='trad_app') LIMIT 1 ";
   mysqli_query($con,$sql13);
 }

 if(mysqli_affected_rows($con)==0){
   $sql14 = "UPDATE users SET text_cli4='$texto' WHERE ((l_origen='$l_origen' || l_origen2='$l_origen') AND l_destino='$l_destino' AND text_cli4='' AND role ='trad_app') LIMIT 1 ";
   mysqli_query($con,$sql14);
 }

 if(mysqli_affected_rows($con)==0){
   $sql15 = "UPDATE users SET text_cli5='$texto' WHERE ((l_origen='$l_origen' || l_origen2='$l_origen') AND l_destino='$l_destino' AND text_cli5='' AND role ='trad_app') LIMIT 1 ";
   mysqli_query($con,$sql15);
 }

 if(mysqli_affected_rows($con)==0){
   $sql16 = "UPDATE users SET text_cli6='$texto' WHERE ((l_origen='$l_origen' || l_origen2='$l_origen') AND l_destino='$l_destino' AND text_cli6='' AND role ='trad_app') LIMIT 1 ";
   mysqli_query($con,$sql16);
 }

 if(mysqli_affected_rows($con)==0){
   $sql17 = "UPDATE users SET text_cli7='$texto' WHERE ((l_origen='$l_origen' || l_origen2='$l_origen') AND l_destino='$l_destino' AND text_cli7='' AND role ='trad_app') LIMIT 1 ";
   mysqli_query($con,$sql17);
 }

 if(mysqli_affected_rows($con)==0){
   $sql18 = "UPDATE users SET text_cli8='$texto' WHERE ((l_origen='$l_origen' || l_origen2='$l_origen') AND l_destino='$l_destino' AND text_cli8='' AND role ='trad_app') LIMIT 1 ";
   mysqli_query($con,$sql18);
 }

 if(mysqli_affected_rows($con)==0){
   $sql19 = "UPDATE users SET text_cli9='$texto' WHERE ((l_origen='$l_origen' || l_origen2='$l_origen') AND l_destino='$l_destino' AND text_cli9='' AND role ='trad_app') LIMIT 1 ";
   mysqli_query($con,$sql19);
 }

 if(mysqli_affected_rows($con)==0){
   $sql20 = "UPDATE users SET text_cli10='$texto' WHERE ((l_origen='$l_origen' || l_origen2='$l_origen') AND l_destino='$l_destino' AND text_cli10='' AND role ='trad_app') LIMIT 1 ";
   mysqli_query($con,$sql20);
 }

}

 if($modificado=='Si'){
   $sql = "UPDATE users SET `text_cli`='$texto', `l_origen` = '$l_origen',  `precio` = '$precio', `l_destino` = '$l_destino', `num_pal` = '$num_pal'  WHERE text_cli = '$texto_ant' AND `role` = ''";
   mysqli_query($con,$sql);

   if(mysqli_affected_rows($con)==0){
    $sql = "UPDATE users SET `text_cli2`='$texto', `l_origen2` = '$l_origen', `precio2` = '$precio', `l_destino2` = '$l_destino', `num_pal2` = '$num_pal'  WHERE text_cli2 = '$texto_ant' AND `role` = ''";
    mysqli_query($con,$sql);
   }

   if(mysqli_affected_rows($con)==0){
    $sql = "UPDATE users SET `text_cli3`='$texto', `l_origen3` = '$l_origen', `precio3` = '$precio', `l_destino3` = '$l_destino', `num_pal3` = '$num_pal'  WHERE text_cli3 = '$texto_ant' AND `role` = ''";
    mysqli_query($con,$sql);
   }

   if(mysqli_affected_rows($con)==0){
    $sql = "UPDATE users SET `text_cli4`='$texto', `l_origen4` = '$l_origen', `precio4` = '$precio', `l_destino4` = '$l_destino', `num_pal4` = '$num_pal'  WHERE text_cli4 = '$texto_ant' AND `role` = ''";
    mysqli_query($con,$sql);
   }

   if(mysqli_affected_rows($con)==0){
    $sql = "UPDATE users SET `text_cli5`='$texto', `l_origen5` = '$l_origen', `precio5` = '$precio', `l_destino5` = '$l_destino', `num_pal5` = '$num_pal'  WHERE text_cli5 = '$texto_ant' AND `role` = ''";
    mysqli_query($con,$sql);
   }

   if(mysqli_affected_rows($con)==0){
    $sql = "UPDATE users SET `text_cli6`='$texto', `l_origen6` = '$l_origen', `precio6` = '$precio', `l_destino6` = '$l_destino', `num_pal6` = '$num_pal'  WHERE text_cli6 = '$texto_ant' AND `role` = ''";
    mysqli_query($con,$sql);
   }

   if(mysqli_affected_rows($con)==0){
    $sql = "UPDATE users SET `text_cli7`='$texto', `l_origen7` = '$l_origen', `precio7` = '$precio', `l_destino7` = '$l_destino', `num_pal7` = '$num_pal'  WHERE text_cli7 = '$texto_ant' AND `role` = ''";
    mysqli_query($con,$sql);
   }

   if(mysqli_affected_rows($con)==0){
    $sql = "UPDATE users SET `text_cli8`='$texto', `l_origen8` = '$l_origen', `precio8` = '$precio', `l_destino8` = '$l_destino', `num_pal8` = '$num_pal'  WHERE text_cli8 = '$texto_ant' AND `role` = ''";
    mysqli_query($con,$sql);
   }

   if(mysqli_affected_rows($con)==0){
    $sql = "UPDATE users SET `text_cli9`='$texto', `l_origen9` = '$l_origen', `precio9` = '$precio', `l_destino9` = '$l_destino', `num_pal9` = '$num_pal'  WHERE text_cli9 = '$texto_ant' AND `role` = ''";
    mysqli_query($con,$sql);
   }

   if(mysqli_affected_rows($con)==0){
    $sql = "UPDATE users SET `text_cli10`='$texto', `l_origen10` = '$l_origen', `precio10` = '$precio', `l_destino10` = '$l_destino', `num_pal10` = '$num_pal'  WHERE text_cli10 = '$texto_ant' AND `role` = ''";
    mysqli_query($con,$sql);
   }

 $sql = "UPDATE users SET text_cli='$texto' WHERE text_cli = '$texto_ant' AND `role` = 'trad_app' ";

 mysqli_query($con,$sql);

 if(mysqli_affected_rows($con)==0){
   $sql = "UPDATE users SET text_cli2='$texto' WHERE text_cli2 = '$texto_ant' AND `role` = 'trad_app' ";
   mysqli_query($con,$sql);
 }

  if(mysqli_affected_rows($con)==0){
   $sql = "UPDATE users SET text_cli3='$texto' WHERE text_cli3 = '$texto_ant' AND `role` = 'trad_app' ";
   mysqli_query($con,$sql);
 }

  if(mysqli_affected_rows($con)==0){
   $sql = "UPDATE users SET text_cli4='$texto' WHERE text_cli4 = '$texto_ant' AND `role` = 'trad_app' ";
   mysqli_query($con,$sql);
 }

  if(mysqli_affected_rows($con)==0){
   $sql = "UPDATE users SET text_cli5='$texto' WHERE text_cli5 = '$texto_ant' AND `role` = 'trad_app' ";
   mysqli_query($con,$sql);
 }

  if(mysqli_affected_rows($con)==0){
   $sql = "UPDATE users SET text_cli6='$texto' WHERE text_cli6 = '$texto_ant' AND `role` = 'trad_app' ";
   mysqli_query($con,$sql);
 }

  if(mysqli_affected_rows($con)==0){
   $sql = "UPDATE users SET text_cli7='$texto' WHERE text_cli7 = '$texto_ant' AND `role` = 'trad_app' ";
   mysqli_query($con,$sql);
 }

  if(mysqli_affected_rows($con)==0){
   $sql = "UPDATE users SET text_cli8='$texto' WHERE text_cli8 = '$texto_ant' AND `role` = 'trad_app' ";
   mysqli_query($con,$sql);
 }

  if(mysqli_affected_rows($con)==0){
   $sql = "UPDATE users SET text_cli9='$texto' WHERE text_cli9 = '$texto_ant' AND `role` = 'trad_app' ";
   mysqli_query($con,$sql);
 }

  if(mysqli_affected_rows($con)==0){
   $sql = "UPDATE users SET text_cli10='$texto' WHERE text_cli10 = '$texto_ant' AND `role` = 'trad_app' ";
   mysqli_query($con,$sql);
 }

 }

 mysqli_close($con);

  }

?>

<html>
 <head>
  <meta http-equiv="X-UA-Compatible" content="IE=EmulateIE11">
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  <title>Log in - Siens Translation</title>
  <link rel="icon" href="ordenador/ingles/css_imagenes/favicon.ico"  type="image/x-icon" />
  <link rel="shortcut icon" href="ordenador/ingles/css_imagenes/favicon.ico" type="image/x-icon" />
  <link href="ordenador/ingles/nuestra_firma_estilos.css" rel="stylesheet" type="text/css">
  <link href="ordenador/ingles/css/style4.css" rel="stylesheet" type="text/css">
  <link href="movil/castellano/menu/menu.css" rel="stylesheet" type="text/css">
  <link href="ordenador/ingles/css_resolutions/resolution800x600.css" rel="stylesheet" type="text/css">
  <link href="ordenador/ingles/css_resolutions/resolution1024x600.css" rel="stylesheet" type="text/css">
  <link href="ordenador/ingles/css_resolutions/resolution1366x768.css" rel="stylesheet" type="text/css"/>
  <link href="ordenador/ingles/css_resolutions/resolution1280x600.css" rel="stylesheet" type="text/css"/>
  <link href="ordenador/castellano/area_clientes/css/css_login.css" rel="stylesheet" type="text/css">
  <link href="movil/castellano/menu/fonts.css" rel="stylesheet" type="text/css">
 </head>
 <body>


<div class="menu_bar" style="font-family:'Gotham-Bold';">
<a class="bt-menu" style="font-size:600%; font-family:'Gotham-Bold'"><span     class="icon-menu"></span>Siens App<br><p  style="font-size:25%; font- family:'Gotham-Light';">From</p></a>
</div>

<div id="login">
  <div id="centrar_app">
  <form action="login_app.php" method="POST" style="margin:0px auto;display:table;">
    <label>
      <p style="font-size:600%">Log in </p><br><br><br>
    </label>
    <label>  
      <p style="font-size:400%">Username</p><br>
      <input style="padding-left:15px; border: 2px solid #475678; font-size:200%; height:100%" id="cuadro" name="login" type="text" value="<?php if(isset($_GET['user'])){ $user = $_GET['user']; echo $user; } ?>" />
    </label><br><br><br>
    <label>
      <p style="font-size:400%">Password</p><br>
      <input style="padding-left:15px; border: 2px solid #475678; font-size:200%; height:100%" id="cuadro" name="password" type="password" value="<?php if(isset($_GET['pass'])){ $pass = $_GET['pass']; echo $pass; } ?>" />
    </label><br><a style="color:white; text-decoration:underline" href="ordenador/castellano/area_clientes/forgotpass.php">Forgot password?</a><br><br>
    <label>
      <p>
        <input type="checkbox" name="remember_me" /> Remember me
      </p>
    </label><br>
    <div clear></div>
    <button id="login-button" style="font-size:400%;" 
            name="action_login">Access</button><br><br>
  </form>

  <style>
    input[type=text], input[type=password]{
      width: 230px;
    }
  </style>

  <button id="login-button" style="font-size:400%"  
            onclick="location.href='';">Register</button><br><br>
    <div id="thawteseal" style="text-align:center;" title="Click to Verify - This site chose Thawte SSL for secure e-commerce and confidential communications.">
    <div><script type="text/javascript" src="https://seal.thawte.com/getthawteseal?host_name=&amp;size=S&amp;lang=en"></script></div>
    </div>
  </div>
</div>

<div id="login">
   <div id="centrar_app">
  <a onMouseOver="this.style.color='white'">If you can't access our payment zone Gateway, you need to deactivate "Block Cookies" in your iPhone configuration settings.</a>
</div>
</div>

<div style="margin-top:10rem" align="center">
<img style="width: 20%; height: 20%" src="">
</div>

2 个答案:

答案 0 :(得分：3)

您的服务器没有＆＃34;重新连接＆＃34;对于设备/客户端来说，POST并不是一成不变的。客户端与服务器之间存在开放连接，发送请求并等待服务器的响应。

您的服务器有机会完全按照您的意愿行事。它可以简单地回复您想要的内容 - 该结果将成为response回调中data或sendAsynchronousRequest的一部分。现在你的php代码没有打印任何内容，但尝试echo一些东西，在swift回调中设置断点并检查回调对象包含什么以及它们与你在服务器上echo编辑的内容的关系

答案 1 :(得分：1)

以下是使用URLSession的示例：

PHP方面：

if (affected_rows > 0) {
    echo '{"success":true}';
 }else{
     echo '{"success":false}';
 }
快速的一面：

    let url=URL(string: "https://www.webpage.com/login_app.php");
    var request=URLRequest(url:url!)
    request.httpMethod="POST"
    let postString = "precio=\(precio)&texto=\(texto)";
    request.httpBody = postString.data(using: String.Encoding.utf8);

    let task=URLSession.shared.dataTask(with: request, completionHandler: { data, response, error in
        guard data != nil else {
            print("no data found")
            return
        }

        do{
            if let jsonData=try JSONSerialization.jsonObject(with: data!, options: JSONSerialization.ReadingOptions.mutableContainers) as? NSDictionary{
                print(jsonData)
                let success=jsonData.value(forKey: "success") as! Bool
                if success{
                    print("login succeded")
                 }else{
                    print("login failed")
                }
            }else{
                print("could not parse json")
                let json_str=NSString(data: data!, encoding: String.Encoding.utf8.rawValue)
                 print("Failed to parse json:", json_str)
            }
        }catch{
            print("request failed")
            let json_str=NSString(data: data!, encoding: String.Encoding.utf8.rawValue)
            print(json_str)
        }
    })
    task.resume()

<强> - 编辑 由于它不起作用，请尝试以这种方式更改POST请求：

let url=URL(string: "https://www.webpage.com/login_app.php")
var request=URLRequest(url:url!)
request.httpMethod="POST"
request.setValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type")
let params=["precio":precio, "texto":texto]
let body=NSMutableData()
for (key, value) in params {
    body.appendString("--\(boundary)\r\n")
    body.appendString("Content-Disposition: form-data; name=\"\(key)\"\r\n\r\n")
    body.appendString("\(value)\r\n")
}
request.httpBody=body

<强> -EDIT2 这是我的NSMutableData扩展：

extension NSMutableData {
    func appendString(_ string: String) {
        let data = string.data(using: String.Encoding(rawValue: String.Encoding.utf8.rawValue), allowLossyConversion: true)
        append(data!)
    }
}
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