string(231) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%8D%96%E6%B2%B9%E7%BF%81%E8%AF%BE%E5%A0%82%E7%AC%94%E8%AE%B0 => Failed to connect to 101.89.117.144 port 38208: Connection refused"
卖油翁课堂笔记
