string(249) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%83%A0%E6%99%AE%E6%89%93%E5%8D%B0%E6%9C%BA%E8%84%B1%E6%9C%BA%E5%B7%A5%E4%BD%9C => Failed to connect to 101.89.159.206 port 38087: Connection refused"
惠普打印机脱机工作
