How to start

1. Apply for Merchant Id and Key

1.1 Please register as an OnlinePay Merchant and activate your account.
1.2 Login and click the Personal Centre - User Management - Personal Information to get the PrivateKey.

2 Parameter signature

2.1 Confirm the requested interface according to the payment method you need.
2.2 Convert the parameters(A+B+C+PrivateKey) that need to be signed in the interface to MD5 values.
2.3 Convert all the generated MD5 values to uppercase to get the final sign value.

3. Calling the payment interface

Call the interface by the RESTful method.

4. Refund

Call the Refund interface when needed.