龙卷风框架（FacebookGraphMixin）

我想尝试使用 Tornado Framework 将应用程序请求从我的 Facebook 应用程序发送到用户。我正在关注http://www.tornadoweb.org/documentation/auth.html但我不知道如何解决这个错误。有专业人士在吗？谢谢！

错误日志

Traceback (most recent call last):
  File "send.py", line 36, in <module>
    main()
  File "send.py", line 33, in main
    test.get(app_access_token, player_id)
  File "send.py", line 15, in get
    callback=self.async_callback(self._on_post))
AttributeError: 'Send' object has no attribute 'async_callback'

Code

import tornado.auth
import tornado.escape
import tornado.httpserver
import tornado.ioloop
import tornado.options
import tornado.web
from tornado import httpclient

class Send(tornado.auth.FacebookGraphMixin):
    def get(self, app_access_token, player_id):
        self.facebook_request(
            "/"+player_id+"/apprequests",
            post_args={"message": "I am an app request from my Tornado application!"},
            access_token=app_access_token,
            callback=self.async_callback(self._on_post))

    def _on_post(self, new_entry):
        if not new_entry:
            # Call failed; perhaps missing permission?
            self.authorize_redirect()
            return
        self.finish("Posted a message!")

def main():
    key = "xxxxxxxxxxx"
    secret = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
    player_id = "100003395454290" #fake id
    http_client = httpclient.HTTPClient()
    response = http_client.fetch("https://graph.facebook.com/oauth/access_token?grant_type=client_credentials&client_id="+key+"&client_secret="+secret+"&redirect_uri=&code=")
    app_access_token = response.body.replace("access_token=","")

    test = Send()
    test.get(app_access_token, player_id)

if __name__ == "__main__":
    main()

好吧，我的回答并没有直接回答OP的问题。但正如这显示在错误的顶部搜索结果中AttributeError: 'XxxxxHandler' object has no attribute 'async_callback'

值得注意的是，从 Tornado v4.0 开始async_callback功能已被删除。引用向后兼容性说明:

The RequestHandler.async_callback and WebSocketHandler.async_callback包装函数已被删除；它们已经过时了 由于堆栈上下文（以及最近的协程），时间很长。