string(276) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%8D%E6%98%AF%E5%BB%BA%E7%AD%91%E4%B8%93%E4%B8%9A%E7%9A%84%E5%8F%AF%E4%BB%A5%E8%80%83%E8%AF%81%E5%98%9B => Failed to connect to 101.89.117.144 port 38208: Connection refused"
不是建筑专业的可以考证嘛
