string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%85%AC%E5%8F%B8%E4%B8%8A%E5%B8%82%E7%9A%84%E8%A6%81%E6%B1%82%E5%92%8C%E6%AD%A5%E9%AA%A4 => Failed to connect to 14.18.117.71 port 38133: Connection refused"
公司上市的要求和步骤
