activiti learning

1. 来源：bilibili activiti7
2. 环境配置
   • idea plugin: activiti bpmn visualizer
   • docker 部署tomcat(tomcat7, 其它版本tomcat的jdk版本不对应, 部署war包可以使用docker cp命令)
     • tomcat7下安装activiti5: activiti-explorer
     • tomcat7下安装activiti6: activiti-app、activiti-admin
   • docker 部署mysql(version: latest, port: 3306, password: 123456)
3. 阅读顺序
   1. ProcessEngineTest
   2. SimpleLeaveTest
   3. ProcessUtilTest
   4. ExpressionTest
   5. ListenerTest
   6. ...