protected void doInTransactionWithoutResult(TransactionStatus status) {
String actType = activityXml.getType();
ActivityType type = ActivityTypeFactory.buildActivityType(actType);
//创建环节
ActivityCreateEvent event = new ActivityCreateEvent(processEngine);
event.setProcessInstance(processInstance);
ActivityInst activityInst = type.createActivity(event, activityXml);
//启动环节
EventUtil.publishActivityStartEvent(event, activityInst, activityXml);
}