Java Servlet是与平台无关的服务器端组件,它可以运行在Servlet容器中.Servlet容器负责Servlet和客户的通信以及调用Servlet的方法,Servlet和客户的通信采用"请求/响应"的模式,Servlet的框架是由两个Java包组成的：javax.servlet和javax.servlet.http-Java Servlet is platform-independent server-side component that can run in the Servlet container. Servlet container for Servlet and customer communications, and the method call Servlet, Servlet, and customer communications a " request/response"　model, Servlet' s framework is composed of two Java packages: javax.servlet and javax.servlet.http