string(282) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%89%93%E5%8D%B0%E6%9C%BA%E5%A4%84%E4%BA%8E%E8%84%B1%E6%9C%BA%E7%8A%B6%E6%80%81%E6%80%8E%E4%B9%88%E5%A4%84%E7%90%86 => Failed to connect to 14.18.46.51 port 38044: Connection refused"
打印机处于脱机状态怎么处理
