According to the need of online collaborative program editing system on the Internet, a portal system is designed using J2EE platform, which is reusable and extensible. The system uses nginx as the front-end reverse proxy,Tomcat as the application server, the SSH architecture based on J2EE, MySQL as the back-end database system. And the system can support multi-user, high concurrency and linear expansion. The overall framework and implementation of the portal system are introduced, including details of software modules such as the reverse proxy service, video transcoding, collaborative program editing. At last, load testing using LoadRunner is introduced. The system represents an new model which uses the network mode to substitute the traditional client-based program editing business, and integrates collaboration capabilities.%根据广域网环境下在线协同节目制作系统的需求,采用J2EE平台,搭建了一套高可重用性、可扩展性的门户系统.该系统采用nginx作为前端反向代理,以Tomcat作为内容服务器,采用J2EE平台的SSH架构,MySQL作为后台数据库系统,能够支持多用户、高并发、线性扩展.重点介绍了门户系统的总体架构及实现方式,包括反向代理服务、视频转码、协同制作业务等模块的实现细节,最后介绍了采用LoadRunner进行压力测试的方法.系统将传统的基于客户端的视频制作业务通过网站的新模式呈现,并且集成了协同功能.
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