FBMQ Python Facebook messenger机器人回发

Question

在做一个Facebook聊天机器人时，我遇到了一个错误，即回发只能运行一次，之后我必须刷新页面以便回发工作。

这是我的代码：

page.show_starting_button("START_PAYLOAD")

@page.handle_postback def received_postback(event): sender_id = event.sender_id recipient_id = event.recipient_id time_of_postback = event.timestamp

payload = event.postback_payload

print("Received postback for user %s and page %s with payload '%s' at %s"
      % (sender_id, recipient_id, payload, time_of_postback))

page.send(sender_id, "Postback called")`

提前谢谢