对于Paytm SDK 2.0和2.1，您不需要为校验和生成传递电子邮件，移动号码和request_type . 您必须通过以下8个参数 -

String param=

"MID="+mid+

"&ORDER_ID=" + orderId+

"&CUST_ID="+custid+

"&CHANNEL_ID=WEB

&TXN_AMOUNT=100

&WEBSITE=www.blueappsoftware.in"+

"&CALLBACK_URL="+ varifyurl+

"&INDUSTRY_TYPE_ID=Retail";

如果你将发送此请求的verifyurl和url将是这样的 - (请用你的generateChecksum.php文件路径更改它)

String url ="http://www.blueappsoftware.com/payment/payment_paytm/generateChecksum.php";

String varifyurl = // "https://securegw.paytm.in/theia/paytmCallback?ORDER_ID="; //

// for testing use it

"https://pguat.paytm.com/paytmchecksum/paytmCallback.jsp";