两种设计模式及其在公众监督系统中的应用

设计模式描述了简单、可复用的软件解决方案的核心。本文对电子政务中公众监督系统的现状进行了研究，深入探讨了设计模式中State模式与Command模式的原理。针对公众监督系统设计中可复用性差和难以维护与扩展的不足，结合这些模式提出了一种将State模式与Command模式相结合的设计思路，并将该组合模式应用于公众监督系统的设计中，从而构建层次分明、结构清晰、重用性好的公众监督系统。

Two Design Patterns and Application in Public Supervision System

Design pattern describes the core of simple,reusable software solution.This paper researches the present condition of Public Supervision System in E-government,and discusses in thoroughly the principles of the State pattern and Command pattern in design patterns.According to the shortages of Public Supervision System,such as the low reusability and insufficiency of maintaining and the expansion,the paper proposes one kind of design ideal thought combining State pattern and Command pattern,and applies them to build Public Supervision System with good hierarchy,clear architecture and better reusability.