最近遇到一个工程，需要使用IC卡来做权限管理，网上一直没找到合适的例子，只好自己摸索，终有结果。希望对大家有点帮助。-recently encountered a project that requires the use of IC cards do Privilege Management, Internet could not find a suitable example. but he has finally concluded. We hope to help a bit.