string(249) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%88%90%E4%B8%BA%E4%B8%8A%E5%B8%82%E5%85%AC%E5%8F%B8%E7%9A%84%E6%9D%A1%E4%BB%B6 => Failed to connect to 101.89.117.144 port 38208: Connection refused"
成为上市公司的条件
