利用JSP、Servlet技术实现网络环境中，随机分配一个a-z的英文字母，用户输入自己的猜测，系统给予判断和提示，直至猜测与随机字母相同或停止运行程序。-Using JSP, Servlet technology network environment, a random distribution of the letters az, the user type in their guesses, the system and tips given to judge until the spe