string(247) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%BD%AF%E4%BB%B6%E5%B7%A5%E7%A8%8B%E4%B8%93%E4%B8%9A%E7%9A%84%E9%99%A2%E6%A0%A1 => Failed to connect to 14.18.117.71 port 38164: Connection refused"
软件工程专业的院校
