1. 1、确认信息 →
  2. 2、点击确认 →
  3. 3、确认完成
alipay_ca_request：
* Signature type
buyer_id：
* Buyer’s Alipay ID
quantity：
* Quantity of commodity
price：
* Unit price of the goods
out_trade_no：
* The unique order number on the merchant’s website
currency：
* The currency used for labelling the price of the transaction. this is also the settlement currency Alipay settled to the partner.
product_code：
* Order business type
total_fee：
* The order amount
seller_id：
* Seller’s Alipay user ID
subject：
* The title of the order
trans_currency：
* Currency of the price
extend_params：
* Business extension parameters
notify_url：
* [Alipay server takes the initiative to notify merchant of webpage http path designated by website ]