Activity 工作流 启动流程

public void startProcessEngine(){
	   ProcessEngine engine  = ProcessEngines.getDefaultProcessEngine();
	   //获得运行service
	   RuntimeService service = engine.getRuntimeService();
	   ProcessInstance processInstance = service.startProcessInstanceByKey("zhangkais");

	   System.out.println(processInstance.getProcessDefinitionId());
	   System.out.println(processInstance.getId());

   }