首先，模式可以更容易地将中间件应用程序环境从开发推向测试，然后再推向生产，或者任何特殊的路径。

First of all, patterns make it easier to promote your middleware application environments from development to test to production, or whatever your particular promotion path may be.

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本文研究了使用中间件技术来实现一个基于B／S模式应用的权限访问控制组件，并将其应用于所开发的项目中。

This paper present a middleware implementation of access control model, and applied it to a B/S mode enterprise application.

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