JAVA语言是目前Internet上大型的WEB应用程序开发时使用得最热门的编程语言，本文描述了JAVA和JSP技术的特点以及在互联网上的使用情况，介绍这两种技术的重要编程方法和两者之关的联系，同时也会应用相关的Struts框架，并完成一个基于这种技术的网上书店系统。-At present JAVA is the hottest programming language for WEB development, This text described the characteristics of JAVA and JSP technology and the state of operating on Internet, It introduced the relationship between them and the important programming method of the double technology, And also show the Struts technology, And work out an online bookstore system base on this kind of technology.