jsp三层建构(jsp+javaBean+Servlet)演示程序，包括注册，登陆，退出功能的实现。使用mysql数据库。简单入门级程序。方便初学者-Java Web development all the necessary software download, jdk, mysql, mysql workbench, tomcat, eclipse, hibernate, Middlegen-Hibernate, middleGenIDe plug, structs, sitemesh st