server.py 文件源码

def validate_absolute_path(self, root, absolute_path):
        """
        An override of
        :meth:`tornado.web.StaticFileHandler.validate_absolute_path`;

        Validate and returns the given *absolute_path* using `pkg_resources`
        if ``self.use_pkg`` is set otherwise performs a normal filesystem
        validation.
        """
        # We have to generate the real absolute path in this method since the
        # Tornado devs--for whatever reason--decided that get_absolute_path()
        # must be a classmethod (we need access to self.use_pkg).
        if self.use_pkg:
            if not resource_exists(self.use_pkg, absolute_path):
                raise HTTPError(404)
            return resource_filename(self.use_pkg, absolute_path)
        return super(
            StaticHandler, self).validate_absolute_path(root, absolute_path)