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基于源码运行activiti-app
启动activiti-app
cd modules/activiti-ui/activiti-app
mvn clean tomcat8:run
open http://ip地址：9999/activiti-app
剖析Activiti-App
activiti-ui
activiti-app 集成发布的war工程
activiti-app-conf ui独立与业务外的配置
activiti-app-logic ui的业务逻辑
activiti-app-rest 提供接口的rest api
二级审批流程
