写单卡自定义数据

data = {"cardnum":"卡号","card_data":"自定义数据"}
Request：服务器地址  + "api/SingleCard/setCardData"
POST："id=" + 软件ID + "&data=" + data 

返回json结果

{"code":"2103","data":""}

结果说明

code:2103 写入成功
code:2102 缺少参数
code:2101 卡号不存在