漂亮的登录界面，使用ext组件，源代码解压即可运行使用-ext login page

一个非常好的Ext例子，有登录，有注册，有主界面，是一个非常适合初学者学习的实例-Ext a very good example of a log, have registered with the main interface is a very suitable for beginners to learn the instance of

扩展log4j原有日志级别，实现了自定义级别的完整原码，同时配有log4j的日志属性文件-The extended of log4j original log level to achieve a complete source Custom Level, at the same time with log4j log properties file