List排序（降序）

import java.util.Comparator;

/**

 * @Classname ComparatorResultType

 * @Description 排序比较器(金牌师傅推荐-分页中使用)

 * @Date 2022/3/10 11:19

 * @Created by 小郭

 */

public class ComparatorResultType implements Comparator {

    @Override

    public int compare(Object arg0, Object arg1) {

        //MasterPageVO是查询数据的实体类，自己根据业务替换掉

        MasterPageVO masterPageVO0=(MasterPageVO)arg0;

        MasterPageVO masterPageVO1=(MasterPageVO)arg1;

        //首先比较主指标，如果主指标相同，则比较次指标

        int flag=masterPageVO0.getScore().compareTo(masterPageVO1.getScore());

        if(flag==0){

            return masterPageVO0.getOrderCount().compareTo(masterPageVO1.getOrderCount());

        }else{

            return flag;

        }

    }

}

@Override

    public PageData<MasterPageVO> getMasterPage(Map<String, Object> params) {

        List<MasterPageVO> voList=masterWorkerDao.getMasterPage(params);

        if (voList.size()>0 && !voList.isEmpty()) {

            for (MasterPageVO vo : voList) {

                //查询师傅拥有的服务

                List<MasterWorkerServiceTypeVO> serviceList = masterWorkerServiceTypeDao.getServiceByMasterWorkerId(Long.parseLong(vo.getId()));

                if (serviceList.size() > 0) {

                    vo.setServiceList(serviceList);

                }

                //查询印象评价标签列表

                List<ImpressionEvaluationVO> impressionEvaluationVOList = masterWorkerDao.getImpressionEvaluationList(Long.parseLong(vo.getId()));

                if (impressionEvaluationVOList.size() > 0) {

                    vo.setImpressionEvaluationVOList(impressionEvaluationVOList);

                }

                //查询评分（总评分数/接单量）

                ScoreDetailVO scoreDetailVO = masterWorkerDao.getScoreTotal(Long.parseLong(vo.getId()));

                if (scoreDetailVO.getScoreTotal() != null && scoreDetailVO.getOrderCount() != null) {

                    vo.setScore(Integer.parseInt(scoreDetailVO.getScoreTotal()) / Integer.parseInt(scoreDetailVO.getOrderCount()));

                    vo.setOrderCount(Integer.parseInt(scoreDetailVO.getOrderCount()));

                } else {

                    vo.setScore(0);

                    vo.setOrderCount(0);

                }

            }

            //根据分数降序排序

            ComparatorResultType comparator=new ComparatorResultType();

            //正常排序

            Collections.sort(voList, comparator);

            //进行降序

            Collections.reverse(voList);

        }

        return getPageData(voList, voList.size(), MasterPageVO.class);

    }