基于Web的远程监测系统的研究

【作者】 杜灵；

【导师】 李建；

【作者基本信息】 西南石油学院 ， 计算机应用， 2002， 硕士

【摘要】 本论文基于Web的远程监测系统的研究是在网络环境下的三层结构的基础上进行的，本文着重阐述了三层结构的各层构架、相关技术以及实际应用程序的实现。 软件结构的变化随着计算机技术的飞速发展，经历了单层结构、两层结构以至到现在普遍流行的三层体系结构。三层结构克服了以前单层和两层结构所具有的结构臃肿，开发难度大，难以维护等缺点，使客户层、业务逻辑层(中间层)、数据层三层各司其职，结构清晰，大大提高了软件开发和使用的效率。而且三层体系结构的最终发展趋势是多层分布式结构，有着更加宽阔的应用前景。 随着Internet的发展，各种基于Web的应用也得到广泛的应用。用户通过浏览器可方便的访问网络上的各种数据，将浏览器与三层结构模式结合起来，便产生了目前比较流行的B／S(Browser／Server)结构。B／S结构充分体现了三层结构的优势，由于客户端使用浏览器访问，使开发人员将更多精力投入到中间层和数据层当中，并且使应用程序也更容易维护。同时，网页制作技术、组件技术、数据库访问技术等也相应发展。 本论文的主要工作如下： 1．三层应用结构 2．相关技术，包括：COM组件技术、ASP脚本技术、数据库访问技术 3．应用程序开发更多还原

【Abstract】 The paper of study on long-distance inspect system based on Web is based on distributing Three-layer applied structure. It sets forth every layer of Three-layer applied structure and the technologies and realize of program.With developing of computer at very fast speed, change of software structure goes through three phases: one-layer applied structure and two-layer applied structure and popular Three-layer applied structure. Three-layer applied structure that includes Show layer and Operation logic layer (middle layer) and Data layer gets over the shortcoming of one-layer applied structure and two-layer applied structure such as overstaffed structure, difficult programming, difficult maintenance, and makes three layers take charge of their duty and structure in focus. It improves the efficiency of software greatly. The developing current of three-layer applied structure is multiplayer distributed system and has wide foreground.With developing of Internet, many applies based on Web is used widely. User can browse the data of network with browser easily. B/S structure is based on the Compounding of browser and Three-layer applied structure. It sets out the advantage of Three-layer applied greatly. Because of visiting by browser at client, programmer can spend more time on middle layer and data layer. And B/S structure makes the maintenance become easy. As same time, the technology of Web, module and database is developing.The main work of paper:1. Three-layer applied structure2. The technologies of three-layer applied structure: COM technology, ASP script technology, data accessing technology3. Program更多还原