json_resource.py 文件源码

def render_GET(self, request):
        # type: (Request) -> int
        """
        Get JSON data from json_GET, and render for the client.

        Do not override in sub classes ...
        :param request: Twisted request
        """
        if iscoroutinefunction(self.json_GET):
            coroutine = self.json_GET(request)
            json_def = ensureDeferred(coroutine)  # type: Deferred
        else:
            json_def = maybeDeferred(self.json_GET, request)

        json_def.addCallback(self.send_json_response, request)
        json_def.addErrback(self.handle_failure, request)

        # handle connection failures
        request.notifyFinish().addErrback(self.on_connection_closed, json_def)

        return NOT_DONE_YET