string(231) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%BE%90%E4%BA%91%E5%8D%9A%E4%B8%80%E5%BB%BA%E5%AE%9E%E5%8A%A1 => Failed to connect to 101.89.159.206 port 38100: Connection refused"
徐云博一建实务
