string(254) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=pos%E6%9C%BA%E5%88%B7%E5%8D%A1%E6%89%8B%E7%BB%AD%E8%B4%B90.38%E6%80%8E%E4%B9%88%E7%AE%97 => Failed to connect to 14.18.117.71 port 38164: Connection refused"
pos机刷卡手续费0.38怎么算
