code: def make_handler(robot):
      
  
      class WeRoBotHandler(RequestHandler):
          def prepare(self):
              timestamp = self.get_argument('timestamp', '')
              nonce = self.get_argument('nonce', '')
              signature = self.get_argument('signature', '')
  
              if not robot.check_signature(
                  timestamp=timestamp, nonce=nonce, signature=signature
              ):
                  self.set_status(403)
                  self.write(
                      robot.make_error_page(
                          html.escape(
                              self.request.protocol + "://" + self.request.host +
                              self.request.uri
                          )
                      )
                  )
                  return
  
          def get(self):
              echostr = self.get_argument('echostr', '')
              self.write(echostr)
  
          def post(self):
              timestamp = self.get_argument('timestamp', '')
              nonce = self.get_argument('nonce', '')
              msg_signature = self.get_argument('msg_signature', '')
              message = robot.parse_message(
                  self.request.body,
                  timestamp=timestamp,
                  nonce=nonce,
                  msg_signature=msg_signature
              )
              self.set_header("Content-Type", "application/xml;charset=utf-8")
              self.write(robot.get_encrypted_reply(message))
  
      return WeRoBotHandler
docs: 为一个 BaseRoBot 生成 Tornado Handler。
  
      Usage ::
  
          import tornado.ioloop
          import tornado.web
          from werobot import WeRoBot
          from tornado_werobot import make_handler
  
          robot = WeRoBot(token='token')
  
  
          @robot.handler
          def hello(message):
              return 'Hello World!'
  
          application = tornado.web.Application([
              (r"/", make_handler(robot)),
          ])
  
      :param robot: 一个 BaseRoBot 实例。
      :return: 一个标准的 Tornado Handler