github上的jpcap,由于原有的jpcap年久失修，这里对其做一些调整，以适应新版libpcap，以及g++及java的编译问题
spring shell初始化测试
缓存管理类，可以存储NSString, NSData ,NSDictionary ,NSArray,适合中型数据缓存，文件存储在Library/Cache目录下，程序退出或进入后台会清除过期文件
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