一个非常不错的java再现支付系统，欢迎大家下载，-a very good reproduction of java payment systems, all are welcome to download,

用JAVA写的SOCKET客户端通信，里面有详细的注释，可以很清楚看懂，也是根据终端第三方支付做的通信。-Written in JAVA SOCKET client communications, there are detailed notes, can clearly understand, paid to do a third party according to the terminal communication.

GBK关键代码，用于产生过滤器的设置,支付宝关键代码，用于产生过滤器的设置-GBK key code, used to generate the filter settings, Alipay key code used to generate the filter settings

通银支付官方DEMO,java源码，很全的资源