Based on Avalon framework,using some interrelated design patterns,a reusable policy server framework(PSF) is designed,and its effective is validated by a simple EchoServer.

• 以Avalon应用框架为基础,利用一些相互联系的设计模式,设计了一个通用的策略服务器框架(policyserverframework,PSF),并通过一个简单的EchoServer服务验证了PSF的有效性。