string(231) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=22%E8%80%83%E7%A0%94%E8%B5%84%E6%96%99%E7%99%BE%E5%BA%A6%E4%BA%91 => Failed to connect to 61.171.74.35 port 38041: Connection refused"
22考研资料百度云
