string(284) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%82%A1%E7%A5%A8%E5%BC%80%E9%80%9A%E5%88%9B%E4%B8%9A%E6%9D%BF%E9%9C%80%E8%A6%81%E5%93%AA%E4%BA%9B%E6%9D%A1%E4%BB%B6 => Failed to connect to 101.91.112.32 port 38221: Connection refused"
股票开通创业板需要哪些条件
