java8进行集合排序

java8进行集合排序

代码如下：

   @Override
    public GenericPage<SystemMsgOrganizationReceiveRecordVO> getPage(Integer pageNo, Integer pageSize, SystemMsgPushRecordPO po, LoginData loginData) throws HerculesException {
        List<SystemMsgOrganizationReceiveRecordVO> attributesVOList= Lists.newArrayList();
        List<SystemMsgOrganizationReceiveRecordVO> sortedList=null;
        SystemMsgOrganizationReceiveRecord condition=new SystemMsgOrganizationReceiveRecord();
        Optional.ofNullable(po).ifPresent(aq->BeanUtils.copyProperties(aq,condition));
        condition.setOrganizationId(loginData.getOrganizationId());
        Page<SystemMsgOrganizationReceiveRecord> pageInfo = PageHelper.startPage(pageNo, pageSize);
        List<SystemMsgOrganizationReceiveRecord> deviceTelemetries = systemMsgOrganizationReceiveRecordMapper.selectByCondition(condition);
        Optional.ofNullable(deviceTelemetries).ifPresent(a->{
            deviceTelemetries.forEach(e->{
                SystemMsgOrganizationReceiveRecordVO avo=new SystemMsgOrganizationReceiveRecordVO();
                BeanUtils.copyProperties(e,avo);
                attributesVOList.add(avo);
            });
        });
        //进行排序
        if(!ObjectUtils.isEmpty(attributesVOList)){
                   sortedList = attributesVOList.stream().sorted(Comparator.comparing(SystemMsgOrganizationReceiveRecordVO::getReadStatus)
                    .thenComparing(SystemMsgOrganizationReceiveRecordVO::getCreateTime).reversed())
                    .collect(Collectors.toList());
        }
        sortedList= sortedList==null ? attributesVOList: sortedList;
        GenericPage<SystemMsgOrganizationReceiveRecordVO> genericPage = new GenericPage<SystemMsgOrganizationReceiveRecordVO>(pageSize,pageInfo.getTotal(),sortedList);
        return genericPage;
    }