说明：  想要做OA办公自动化的人可能对变来变去的工作流很头痛，jbpm就是一个专门搞定工作流的java包。学习一下，做起工作流来得心应手。
(Want to do office automation OA may be on changing the work flow a headache, jbpm is a specialized workflow get java package. Learning about the work flow to start easy.)