问题
I am using the DoDirectPayment and DoCapture paypal API(s) to authorize and capture the Credit Card Payments via Paypal. But the Problem is that I am not getting any notification in Sandbox when the payment is authorized and captured. I get the Notifications only when the PaymentAction = 'Sale' but the notifications are not coming when PaymentAction = 'Authorization'.
来源：https://stackoverflow.com/questions/25938320/paypal-dodirectpayment-api-is-not-sending-the-notifications-to-sandbox