string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%A4%A9%E6%B4%A5%E8%B4%A2%E7%BB%8F%E5%A4%A7%E5%AD%A6%E7%BD%91%E4%B8%8A%E7%A1%AE%E8%AE%A4%E5%85%AC%E5%91%8A => Failed to connect to 14.18.117.71 port 38220: Connection refused"
天津财经大学网上确认公告
