Quick integration
Throughout the integration, whenever the merchant system intends to interact with the Alipay system for a specific service, it needs to send an HTTPs request to the corresponding interface. Upon receiving the request, the Alipay system will first verify the request; if the verification is successful, then the Alipay system will respond the result data to the merchant server.
To integrate a merchant's system with Alipay to run the Barcode payment solution, a typical merchant basically needs to implement the functions to pay, reverse or refund a transaction, which will be respectively explained in this section.