guokehua@yahoo.com.cn Web 10& Web 20 ◆Web1.0- Synchronous browser client user interface classic web application model(synchronous) cli len Http request user activity user activity user actiity httpd(s)transport HTML+CSS data time web server datastores, backend processing, legacy systems system processing system processing server-side systems server classic web application model 郭克华J2EE框架实战教学视频J guokehua@yahoo.com.cn 郭克华J2EE框架实战教学视频 Web 1.0 & Web 2.0 Web 1.0 & Web 2.0 Web 1.0 – Synchronous