【摘要】 Web应用系统规模和复杂程度的不断增大,给系统的开发带来了许多新的问题,如:程序代码的耦合度增大,代码的可维护性、应用框架及组件的可重用性降低等.针对这些问题,在基于MVC的多层Web体系结构基础上,对业务层中的模型做进一步研究,设计了一种优化的分层模型,详细描述了分层模型的设计思想与实现技术,并通过实例说明了该分层模型的具体应用.可以发现,该优化分层模型方案增加了模型部分的重用性,降低了层与层之间的耦合度,使得系统具有更好的可维护性、可扩充性和可移植性.更多还原

【Abstract】 The increase of the scale and complexity of Web application system has caused many problems in the system development, such as the increase of coupling degree among the program codes, the deterioration of the maintenance of codes and the reuse of application frame and groupware, etc. When dealing with these problems, based on the MVC’s multi-tier Web Architecture, this paper makes further research on the model of business tier, designs an optimized hiberarchy model, describes in detail the design idea and realization technology of the model, and illustrates the practical application of the model.The project of the optimized hiberarchy model strengthens the reuse of the model, reduces the coupling degree between tiers, and improves greatly the system’s maintenance, the ability to extend and transplant.更多还原