问题
I want to show a greeting message when start a conversation on Facebook Messenger ( before any user input ) . How to do it?
The problem is : My code is for server by NodeJS ,and it only trigger when a message is send to server ,which mean it only be triggered when users send something.
Facebook messenger doesn't send anything when you press button "Message".
I have check this link Messenger Greeting , but it only shows when a new user starts chat ,but i need show it when starting conversations
回答1:
You have to set a welcome message, using the Facebook Api. Find the documentation here: https://developers.facebook.com/docs/messenger-platform/implementation#welcome_screen
As explained in the documentation, you have to make a POST request to https://graph.facebook.com/v2.6/<PAGE_ID>/thread_settings?access_token=<PAGE_ACCESS_TOKEN>
You need to make the POST request only once, then Facebook will automatically prompt your welcome message whenever a user starts a chat.
回答2:
I wrote and answer for this question here.
Have a nice working ;)
来源：https://stackoverflow.com/questions/37874184/facebook-messenger-how-to-show-a-greeting-message-when-start-conversation