string(235) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%81%94%E6%83%B3%E4%B8%80%E4%BD%93%E6%9C%BAb540%E9%85%8D%E7%BD%AE => Failed to connect to 101.89.143.195 port 38175: Connection refused"
联想一体机b540配置
