string(231) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%94%99%E6%97%B6%E5%AE%89%E6%8E%92%E4%B8%8A%E4%B8%8B%E5%AD%A6 => Failed to connect to 101.89.117.144 port 38022: Connection refused"
错时安排上下学
