string(278) "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%E4%B8%BA%E8%84%B1%E6%9C%BA%E7%8A%B6%E6%80%81%2C%E6%80%8E%E6%A0%B7%E6%89%8D%E8%83%BD%E6%89%93%E5%8D%B0 => Received HTTP code 403 from proxy after CONNECT"
打印机为脱机状态,怎样才能打印
