string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%85%92%E5%BA%97%E6%89%93%E5%8D%B0%E7%BA%B8%E5%B0%BA%E5%AF%B8%E6%98%AF%E5%A4%9A%E5%B0%91 => Failed to connect to 14.18.117.71 port 38164: Connection refused"
酒店打印纸尺寸是多少
