string(242) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%84%9A%E6%89%8B%E6%9E%B6%E6%96%BD%E5%B7%A5%E8%A7%84%E8%8C%832019%E7%89%88 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
脚手架施工规范2019版
