【作者】 朱宝运；

【导师】 席一凡；

【作者基本信息】 西安建筑科技大学 ， 管理科学与工程， 2003， 硕士

【摘要】 随着我国公路建设规模的不断扩大，公路行业所面临的业务不断更新，日益复杂，尤其是要建立基于Internet/Intranet的分布式电子政务应用系统，企业面临的硬件设备、软件系统、网络环境和数据库不尽相同，迫切需要一套完整的技术方案，来提高系统的跨平台性、可拓展性和安全性。最为目前主流的分布式对象技术COM+、COBRA、J2EE可以满足这一需要，是建立分布式应用系统的首先方案。 本文详细介绍公路建设中公路工程计量支付系统的开发过程，首先利用UML对系统进行分析设计与规划，详尽的反映了包括业主、监理和施工单位在内的建设者的业绩、权利和义务，然后分别利用COM+、COBRA、J2EE三种分布式技术规范实现系统。在实现过程中，重点介绍系统架构和组件的设计，以及几个组件的详细编码。同时，对这三项技术进行了简单的比较分析，提出了开发分布式公路计量支付系统最适合的方案。 本文通过研究分布式对象技术COM+、COBRA、J2EE在公路计量支付系统的设计与实现，对我国公路行业信息化建设提出了一些建议和设想，对提高其技术水平有一定的指导作用。针对计量支付的特殊情况，对UML建模中的一些方法进行了改进，如提出和描述了一种改进的多层次用况模型描述法和一种改进的基于职责的多层次分析模型描述法。同时对开发基于COM+、COBRA、J2EE的分布式的系统架构和组件进行了重点分析，例如如何确定组件的事物属性和安全管理等。所有这些不仅对我国公路行业，而且对其它行业的信息化建设具有借鉴意义。更多还原

【Abstract】 With the increment of scale in the road construction, the affairs that road industry must confront are altering sharply and getting more and more complicated. When building the application of distributed E-administration System based on Internet/ Intranet, the enterprises face the problem that the hardware equipment the software system network environments and databases are very deferent. It is urged to design a completed technological methodology to satisfy the demand of integrating different development environment and increasing the feasibility and security. COM+, COBRA, J2EE, as the current mainly distributed object technology, can completely meet this demand and become the first methodology choosed.Depending on the example of road works gauge and payment system and UML, the thesis analyzes designs and plans this system and expresses the rights and responsibility of the constructors-quantity surveyor supervisor and owner. In the end, COM+, COBRA, and J2EE accomplish this system. During how to realize the system, it introduces how to design the framework and the component of the system. On the other hand, it compares simply them and gives a suitable methodology.In according to the research on the Application of Road Works Gauge and Payment System Based on Distributed Object Technology, this thesis introduces some proposals and measures that can guide the progress of the technology on MIS of road industry. It also improves some methods on UML, for example, the improved descriptions of multilayer use case model and analysis model based on responsibility. Otherwise, it analyses emphatically the distributed system framework based on COM+, COBRA, J2EE and how to decide the transaction and realize the security of component. By doing these, it can be referenced not only by road industry but also by other ones.更多还原