中间件技术在多模型洪水预报WEB中的应用

Application of middleware technique in Web of flood forecasting system with multiple models

利用中间件技术实现网络环境下的防汛决策应用是目前防汛业务的一个新方向。按照J2EE标准,以中间件技术的应用框架为基础,在MVC软件设计模式的指导下建立了面向Web的洪水预报系统,以期提高软件的可扩展性、可维护性和代码复用率。本文以可拆分子模块的新安江模型和不可拆分子模块的水箱模型为代表,探讨了对于子模块、模型的标准组件及组件库的开发,初步尝试了搭建组件模型及应用方案的过程。最后以一个小流域的实测资料为例,对多模型洪水预报过程以及预报结果对比进行了应用测试。

According to the J2EE criterions, the framework technology base on middleware technique and model-view-controller (MVC) design pattern are introduced to establish a flood control system in Web circumstance for improving the codes' extendibility, maintainability and re-usability. The Xinanjiang model and tank model are adopted as the hydrological model to investigate the application of the proposed technology. A set of components for application is developed and the way for setting up an application scheme with these components are presented. The whole procedure of operation is visible in the IE browser. The forecasting systems based on both models are applied to forecast the floods in a small watershed for demonstration. It is found that the determinacy coefficient of Xinanjiang model is better than that of tank model.