跟我学SpringMVC电子版。Spring是一个开源的轻量级Java SE（Java 标准版本）/Java EE（Java 企业版本）开发应用框架，其目的是用于简化企业级应用程序开发。应用程序是由一组相互协作的对象组成。而在传统应用程序开发中，一个完整的应用是由一组相互协作的对象组成。(Follow me to learn SpringMVC electronic version. Spring is an open source lightweight Java SE (Java Standard Version) /Java EE (Java enterprise version) development application framework, which is designed to simplify enterprise application development. An application is made up of a set of cooperating objects. In traditional application development, a complete application is made up of a set of cooperating objects.)