基于JAVAEE的工作流引擎的设计文档。详细说明了工作流引擎的结构，以及开发方式。-Based on the design of the workflow engine JAVAEE document. Detail the workflow engine, and the development of the structure.

一篇关于java编程方面工作流引擎指导文档，通过一个请假的demo讲解很详细。-A workflow engine guiding document on java programming demo by a leave explain in great detail.