string(243) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%A6%82%E4%BD%95%E6%9B%B4%E5%A5%BD%E7%9A%84%E6%8E%A8%E5%B9%BFpos%E6%9C%BA => Failed to connect to 101.89.117.144 port 38056: Connection refused"
如何更好的推广pos机
