string(232) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%AB%98%E6%89%8B%E5%A6%82%E4%BD%95%E6%8E%A8%E5%B9%BFpos%E6%9C%BA => Failed to connect to 61.171.74.35 port 38027: Connection refused"
高手如何推广pos机
