activiti启动流程实例

import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.RuntimeService;
import org.activiti.engine.runtime.ProcessInstance;

/**
 * 启动流程实例:
 *     前提是先已经完成流程定义的部署工作
 *
 *     背后影响的表：
 *       act_hi_actinst     已完成的活动信息
         act_hi_identitylink   参与者信息
         act_hi_procinst   流程实例
         act_hi_taskinst   任务实例
         act_ru_execution   执行表
         act_ru_identitylink   参与者信息
         act_ru_task  任务
 */
public class ActivitiStartInstance {
    public static void main(String[] args) {
        //1.得到ProcessEngine对象
        ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();

        //2.得到RunService对象
        RuntimeService runtimeService = processEngine.getRuntimeService();

        //3.创建流程实例  流程定义的key需要知道 holiday
        ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("myProcess");


        //4.输出实例的相关信息
        System.out.println("流程部署ID"+processInstance.getDeploymentId());//null
        System.out.println("流程定义ID"+processInstance.getProcessDefinitionId());//holiday:1:4
        System.out.println("流程实例ID"+processInstance.getId());//2501
        System.out.println("活动ID"+processInstance.getActivityId());//null

    }
}