将错误PHP发布到dynamoDB

Question

发布到DynamoDB，以便用户登录。

致命错误：未捕获的异常'Aws\DynamoDb\Exception\DynamoDbException'，带有消息'在“https://dynamodb.us-east-1.amazonaws.com”上执行“GetItem”时出错；AWS HTTP错误：客户端错误：POSThttps://dynamodb.us-east-1.amazonaws.com导致400错误请求响应：{"__type"："com.amazon.coral.validate#ValidationException"，"消息"："提供的键元素与架构不匹配"（截断...）ValidationException（客户端）：提供的键元素与架构不匹配 - {"__类型"："com.amazon.coral.validate#ValidationException"，"消息"："提供的键元素与架构不匹配"}'GuzzleHttp\Exception\ClientException：客户端错误：POSThttps://dynamodb.us-east-1.amazonaws.com导致400错误请求响应：{"__type"："com.amazon.coral.validate#ValidationException"，"消息"："提供的键元素与架构不匹配"（截断...）在 /var/www/html/sdks/vendor/guzzlehttp/guzzle/src/Exception/RequestException.php:113堆栈跟踪：#0 /var/www/html/sdks/vendor/guzz在 /var/www/html/sdks/vendor/aws/aws-sdk-php/src/WrappedHttpH192行

我的PHP代码-----

    require 'config.php';
    use Aws\DynamoDb\DynamoDbClient;

    $client = new DynamoDbClient([
        //'profile' => 'default', // access ID + secret are in the       .aws/credentials file
        'region' => 'us-east-1', // also tried with "eu-west-1"
        'version' => 'latest',
        'debug'  => true
    ]);
    // echo "after client instanciation"; // this is not displayed

    $username = null;
    $password = null;

    if ($_SERVER['REQUEST_METHOD'] == 'POST') {

    if(!empty($_POST["userid"]) && !empty($_POST["password"])) {
         $username = $_POST["userid"];
         $password = $_POST["password"];

         $response = $client->getItem(array(
             'TableName' => 'user',
             'Key' => array(
             'userid' => array( 'S' => $username),
             'password' => array( 'S' => $password),
         )
         ));

         if($username == 'userid' && $password == 'password') {
              session_start();
              $_SESSION["authenticated"] = 'true';
              header('Location: index.php');
         }
         //else {
              //header('Location: login.php');
         //}

    //} else {
         //header('Location: login.php');
    }

    print_r ($response['Item']);
  }
?>

Answer 1

我怀疑您的主键（哈希/分区键）实际上是“userid”，而不是“userid”“password”。因此，DynamoDB确切地告诉您，无论您使用什么名称传递给DynamoDB，都与DynamoDB认为您的主键不匹配。我想，一旦你去掉下面这条线，它将更接近于为你工作：

'password' => array( 'S' => $password),

顺便说一句，您可能希望使用某种算法安全地存储密码-可能是bcrypt或类似算法。否则，您的密码将以纯文本形式存储，这在当今被认为是一种不好的做法。