中文摘要：

以一个作为门户子系统的内容管理系统为应用背景，分析内容管理中文档生命周期的管理，包括多级权限、用户、文档状态与操作、状态转换、并发控制等，提出一个可配置的、与类RBAC访问控制机制松耦合且紧密配合的文档生命周期管理方法，列举几个可用模型，论述模型实现的要点。

英文摘要：

This paper takes a Content Management System（CMS） as the subsystem of a portal, analyzes document lifecycle management in CMS, including multi-level permissions, users, document statuses and actions, transition of the statuses, concurrency, etc. It presents a method for document lifecycle management, which is configurable, cooperating and loose coupling with RBAC-like mechanism. The models and the key points to implementation are discussed.