为适应水利信息系统软件开发模式的变革，基于.NET平台，采用面向对象的研究方法，以《水利信息管理系统》为实例模型开展了中间件应用研究。具体开发了“数据录入中间件”、“数据编辑中间件”、“数据检索统计中间件”、“用户安全中间件”、“数据通讯中间件”等软件模块。研究产生的中间件模块可被跨平台调用，具有良好的复用性和安全性。

In order to adapt to the changes in software development mode of water resources information system, on the basis of .Net platform and with an object-oriented approach, a study on middleware application technology has been carried out taking the “Water Resources Information Management System” as example, involving “data entry middleware”, “data editing middleware”, “data retrieval and statistic middleware ”, “user security middleware” and “data communication middleware”, etc. The middleware modules can be used for multi-platform, with good reusability and security.