当我听文件系统事件时,我的回调接收节点作为参数 https://docs.nextcloud.com/server/stable/developer_manual/app/hooks.html#filesystem-root
除通过HTTP向WebDAV的远程请求外,如何获取节点的属性? https://docs.nextcloud.com/server/12.0/developer_manual/client_apis/WebDAV/index.html#listing-folders-rfc4918