string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%A4%96%E8%84%9A%E6%89%8B%E6%9E%B6%E6%96%BD%E5%B7%A5%E6%B5%81%E7%A8%8B => Failed to connect to 101.89.117.144 port 38022: Connection refused"
外脚手架施工流程
