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paytm verifychecksum错误

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我正在获得验证校验和错误的paytm到Android应用程序我已经创建了在PHP的校验和并从服务器发送到Android app.once应用程序收到校验和再次参数将去服务器验证校验和

应用代码

public void onStartTransaction (View view){

            String orderId = pref.getoId();
            String uid = pref.getuid();
            String email = pref.getemail();
            String mobile = pref.getMobileNumber();
            String checksum = pref.getchecksum();
            PaytmPGService Service = PaytmPGService.getProductionService();
            Map<String, String> paramMap = new HashMap<String, String>();
            paramMap.put("MID", "Goa3038161");
            paramMap.put("ORDER_ID", orderId);
            paramMap.put("CUST_ID", uid);
            paramMap.put("INDUSTRY_TYPE_ID", "Retail109");
            paramMap.put("CHANNEL_ID", "WAP");
            paramMap.put("TXN_AMOUNT", "99");
            paramMap.put("WEBSITE", "GWEB");
            paramMap.put("CALLBACK_URL", "https://goalert.in/verifyChecksum.php ");
            paramMap.put("EMAIL", email);
            paramMap.put("MOBILE_NO", mobile);
            paramMap.put("CHECKSUMHASH", checksum);
            PaytmOrder Order = new PaytmOrder(paramMap);

            Service.initialize(Order, null);

服务器代码

generateChecksum.php

此函数生成校验和并返回具有校验和值的app

<?php
header("Pragma: no-cache");
header("Cache-Control: no-cache");
header("Expires: 0");

require_once("./lib/config_paytm.php");
require_once("./lib/encdec_paytm.php");

require_once 'include/DB_Functions.php';
$db = new DB_Functions();

if (isset($_POST['email']) && isset($_POST['mobile']) && isset($_POST['uid']) && isset($_POST['orderId'])){

    $email = $_POST['email'];
    $mobile = $_POST['mobile'];
    $uid = $_POST['uid'];
    $orderId = $_POST['orderId'];

}else {
    // required post params is missing
    $response["error"] = TRUE;
    $response["error_msg"] = "Unknown error";
    echo json_encode($response);
}

$checkSum = "";
// below code snippet is mandatory, so that no one can use your checksumgeneration url for other purpose .
$findme   = 'REFUND';
$findmepipe = '|';
$paramList = array();
$paramList["MID"] = 'Goa8161';
$paramList["ORDER_ID"] = $orderId;
$paramList["CUST_ID"] = $uid;
$paramList["INDUSTRY_TYPE_ID"] = 'Retail109';
$paramList["CHANNEL_ID"] = 'WAP';
$paramList["TXN_AMOUNT"] = '99';
$paramList["WEBSITE"] = 'GoB';
foreach($_POST as $key=>$value)
{  
  $pos = strpos($value, $findme);
  $pospipe = strpos($value, $findmepipe);
  if ($pos === false || $pospipe === false) 
    {
        $paramList[$key] = $value;
    }
}

//Here checksum string will return by getChecksumFromArray() function.
$checkSum= getChecksumFromArray($paramList,"gPFC");
//print_r($_POST);
$response["user"]= array("CHECKSUMHASH" => $checkSum,"orderId" => $_POST["orderId"], "payt_STATUS" => "1");
echo json_encode($response);

verifyChecksum.php

此函数将验证与paytm服务器的校验和

注意：请务必忽略键中间参数的值

<?php
header("Pragma: no-cache");
header("Cache-Control: no-cache");
header("Expires: 0");
// following files need to be included
require_once("./lib/config_paytm.php");
require_once("./lib/encdec_paytm.php");
$paytmChecksum = "";
$paramList = array();
$isValidChecksum = FALSE;
$paramList = $_POST;
$return_array = $_POST;
$paytmChecksum = isset($_POST["CHECKSUMHASH"]) ? $_POST["CHECKSUMHASH"] : ""; //Sent by Paytm pg
//Verify all parameters received from Paytm pg to your application. Like MID received from paytm pg is same as your application’s MID, TXN_AMOUNT and ORDER_ID are same as what was sent by you to Paytm PG for initiating transaction etc.
$isValidChecksum = verifychecksum_e($paramList, "gPFZSi", $paytmChecksum); //will return TRUE or FALSE string.
if ($isValidChecksum===TRUE){
$return_array["IS_CHECKSUM_VALID"] = "Y";
else
$return_array["IS_CHECKSUM_VALID"] = "N";
}
$return_array["IS_CHECKSUM_VALID"] = $isValidChecksum ? "Y" : "N";
$return_array["TXNTYPE"] = "";
$return_array["REFUNDAMT"] = "";
unset($return_array["CHECKSUMHASH"]);
$encoded_json = htmlentities(json_encode($return_array));
?>

<html>
<head>
    <meta http-equiv="Content-Type" content="text/html;charset=ISO-8859-I">
    <title>Paytm</title>
    <script type="text/javascript">
        function response(){
            return document.getElementById('response').value;
        }
    </script>
</head>
<body>
  Redirect back to the app<br>

  <form name="frm" method="post">
    <input type="hidden" id="response" name="responseField" value='<?php echo $encoded_json?>'>
  </form>
</body>
</html>

当交易正在处理时，它会因付款会话因不活动而关闭而产生错误 . 当我在paytm上检查订单时，它表示校验和错误

请帮助解决问题

php android paytm

2 回答

  • 0

    可能有些事情可能出错 .

    让我先简要说明一步一步的过程，所以如果你找到的东西与你所做的不同，我们就可以快速找出错误点 .

    1）应用程序通常会触发付款，然后发送需要生成checkSum的所有数据 .

    2）只有服务器必须生成校验和（纯粹出于安全原因）

    3）支票和退款的校验和生成方法不同 . 至少在Java和Python中 . （这在Paytm真的很傻，而且有点乱，但那是另一天的故事）

    4）应用程序必须调用Paytm API（带或不带SDK），一旦收到响应，必须要求服务器验证响应中的校验和发送 .

    Cautions :-

    1）发送给Paytm的参数必须与checkSum生成中使用的参数相同 . 不能没有更多，不用说，空格，输入，破坏所有计数，并将失败您的checkSum验证 .

    2）如果您正在处理退款，请不要在checkSum生成中发送 REFID ，但在调用Paytm API时发送它 .

    回复于
  • 1

    我没有看到你生成任何校验和，应该为你计划发送的所有参数进行校验和 .

    看来你： String checksum = pref.getchecksum(); getchecksum 的实现在哪里？将其保留在主要对象之外，然后再试一次 .

    回复于

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