@Override
public void onEvent(ActivitiEvent event) {
switch (event.getType()) {
case VARIABLE_CREATED:
ActivitiVariableEvent variableEvent = (ActivitiVariableEvent) event;
System.out.println("创建了变量: " + variableEvent.getVariableName() + ", 值：" + variableEvent.getVariableValue());
break;
default:
System.out.println("Event received: " + event.getType());
}