Research On Software Reuse Technology In The Flood Forecasting System

Flood forecasting system is along with the development of the computer generated. The system use the software technology and mathematical model to simulate natural hydrological trends, it is an important technical measures for the flood control and disaster mitigation, the application of hydrology and water resources planning. Flood forecasting system and software technology started late in China, the gap is larger with foreign. Currently the forecast system are developed separately, there is no module can directly use off-the-shelf components, a large number of repetitive code development, certainly will cause serious waste of resources, more conducive to forecast system of unified planning and management. How to avoid the repetitive work in the process of system development, simplify the system structure, improve the operation efficiency, it become an important problem of the forecast system development in our country.Software reuse technology is a new technology in the field of software engineering. Which makes use of the system, structure, existing mature technology to develop new programs, not only can improve the development efficiency, reduce costs, avoid duplication of development, can improve the function, improve quality, prolong life, enhance the applicability, it is the summary and sublimation of existing software development experience. This paper respectively from the system architecture design (C/S and B/S three layer model), reusable model parameter table structure design, hydrological models Shared component analysis and basic component development (JavaBean+Tomcat+Servlet three layer model of query component instance) from several aspects. Through the simple application about technology of software reuse on the forecast system, find the common of flood forecasting system from the others. The software reuse technology application in the process of the development of flood forecasting system, can improve the efficiency of system development, operation and reuse, to solve the flood forecast system in our country at present a lot of repetitive work play a positive role.