middleware.py 文件源码

def process_request(self, req, resp, **kwargs):

        if 'multipart/form-data' not in (req.content_type or ''):
            return

        # This must be done to avoid a bug in cgi.FieldStorage.
        req.env.setdefault('QUERY_STRING', '')

        # To avoid all stream consumption problem which occurs in falcon 1.0.0
        # or above.
        stream = (req.stream.stream if hasattr(req.stream, 'stream') else
                  req.stream)
        try:
            form = self.parse(stream=stream, environ=req.env)
        except ValueError as e:  # Invalid boundary?
            raise falcon.HTTPBadRequest('Error parsing file', str(e))

        for key in form:
            # TODO: put files in req.files instead when #418 get merged.
            req._params[key] = self.parse_field(form[key])