Scene 3: Implementing Code Refactoring

Language: JAVA
Scenario: Refactoring code, simplifying, adding Chinese comments, enhancing exception handling
Code:
@Override
public PlanFlowDto getLastTransport(String orderCode) {
List list = this.list(new LambdaQueryWrapper().eq(PlanFlow::getOrderCode, orderCode));
PlanFlowDto flowDto = new PlanFlowDto();
if (CollUtil.isNotEmpty(list)) {
PlanFlow planFlow = list.stream().filter(e -> e.getFlowOrder().equals(e.getFlowTotal())).findFirst().orElse(new PlanFlow());
flowDto = StreamlineCopyUtil.beanCopy(planFlow, PlanFlowDto.class);
}
return flowDto;
}