string(267) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%B1%B1%E4%B8%9C%E7%9C%81%E5%85%A8%E9%83%A8%E5%A4%A7%E5%AD%A6%E6%8E%92%E5%90%8D%E5%89%8D%E5%8D%81 => Failed to connect to 101.89.143.195 port 38109: Connection refused"
山东省全部大学排名前十
