string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BA%8C%E5%BB%BA%E8%B5%84%E6%96%99%E7%99%BE%E5%BA%A6%E7%BD%91%E7%9B%98%E5%92%8C%E6%8F%90%E5%8F%96%E7%A0%81 => Failed to connect to 61.171.74.35 port 38041: Connection refused"
二建资料百度网盘和提取码
