Question

我正在尝试使用Alamofire在我的swift应用程序中发送一个PHP Post请求，该应用程序必须使用OVH api发送短信，但我遇到了一个问题：

FAILURE: Error Domain=com.alamofire.error Code=-6006 "JSON could not be serialized. Input data was nil or zero length." UserInfo={NSLocalizedFailureReason=JSON could not be serialized. Input data was nil or zero length.}

我没有找到如何从PHP脚本中看到回声来解决它。我认为这不是Alamofire的问题，因为我提出了另一个发送电子邮件的请求，而且效果很好。这是我的请求，其中有错误：

func sendSmsAutoRequest(completionHandler: (responseObject: NSDictionary?, error: NSError?) -> ()) {
    let prefs = NSUserDefaults.standardUserDefaults()
    let username = prefs.stringForKey(StorageManager.USER_NAME)!
    let messageText = prefs.stringForKey(StorageManager.MESSAGE_TEXT)!

    let parameters = ["contactsSms": contactsSms, "username": username, "messageText": messageText]
    request(.POST, "http://XXX/dontworry/sendAutoSms.php", parameters: (parameters as! [String : AnyObject])).responseJSON { response in
        print(response)
    }

}

这是我的剧本：

<?php

require __DIR__ . '/vendor/autoload.php';
use \Ovh\Api;

$applicationKey = "XXX";
$applicationSecret = "XXX";
$consumer_key = "XXX";

$endpoint = "ovh-eu";

$contactsSms = $_POST['contactsSms'];
$userName = $_POST['username'];
$messageText = $_POST['messageText'];

$conn = new Api($applicationKey,
                $applicationSecret,
                $endpoint,
                $consumer_key);

$smsServices = $conn->get('/sms/');

$content = (object) array(
                            "charset"=> "UTF-8",
                            "class"=> "phoneDisplay",
                            "coding"=> "7bit",
                            "message"=> $messageText,
                            "noStopClause"=> true,
                            "priority"=> "high",
                            "receivers"=> $contactsSms,
                            "senderForResponse"=> true,
                            "validityPeriod"=> 2880
                            );

$resultPostJob = $conn->post('/sms/'. $smsServices[0] . '/jobs/', $content);

$smsJobs = $conn->get('/sms/'. $smsServices[0] . '/jobs/');

echo '{"contacts": $contactsSms,"username": $username, "messageText": $messageText, "result": $resultPostJob, "sms": $smsJobs}'; ?>

编辑：它似乎工作，我没有错误了！但短信没有发送......

Answer 1

从第一次阅读开始，您的PHP脚本很可能会打印出无效的JSON。以下语句将打印包含不带引号的字符串的JSON（假设一个或多个参数如$_POST['messsageText']包含字符串值）：

echo '{"contacts": $contactsSms,"username": $username, "messageText": $messageText, "result": $resultPostJob, "sms": $smsJobs}';

示例输出（为便于阅读而打印漂亮）：

{
  "contacts": foobar,  # <-- This is invalid! It's a string and needs to be quoted!
  "username": johndoe,
  "messageText": Hello World,  # <-- This is even more invalid!
  ...
}

我建议依靠PHP的json_encode函数来生成有效的JSON输出：

echo json_encode([
    "contacts" => $contactsSms,
    "username" => $username,
    "messageText" => $messageText,
    // etc.
]);

Answer 2

这是alamoFire中的一个错误，已在3.1.1版本中修复，请参阅pull #889，修复版仅在您的REST服务返回响应204（NO_RESPONSE）时才有效，这在理论上是正确的这样做的方法。

Answer 3

序列化是将对象转换为JSON字符串的过程。所以问题不在于您的回复处理，而在于您的回复。

记录parameters字典的内容，并检查是否为nil值。

Alamofire JSON无法序列化

3 个答案: