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22.探花功能

时间:2022-11-02 14:35:06浏览次数:43  
标签:功能 likeUserId 22 userId 用户 Long 喜欢 探花 id

探花功能

一、查询探花卡片推荐用户列表

1667302143453

TanHuaController

 /**
     * 左滑右滑之:查询推荐列表卡片列表
     * 请求路径:/tanhua/cards
     * 请求方式:get
     * 响应数据:List<TodayBest>
     */
    @GetMapping("/cards")
    public  ResponseEntity lookCardsList(){

      List<TodayBest> list  = tanHuaService.lookCardsList();
      return ResponseEntity.ok(list);

    }

TanHuaService


    /**
     * 左滑右滑之查看推荐卡片列表
     * @return
     */

    public List<TodayBest> lookCardsList() {
        //1.每次查询10条推荐用户,排除已喜欢或已不喜欢的用户
        List<RecommendUser> recommendUsers =recommendUserApi.lookCardsList(ThreadLocalUtils.getUserId(),10);

        //2.如果推荐的用户为空,构造默认推荐用户列表
        if(CollUtil.isEmpty(recommendUsers)){
            recommendUsers = new ArrayList<>();

            String[] userIds = defaultRecomment.split(",");
            for (String userId : userIds) {
                RecommendUser recommendUser = new RecommendUser();
                recommendUser.setUserId(Convert.toLong(userId));
                recommendUser.setToUserId(ThreadLocalUtils.getUserId());
                recommendUser.setScore(RandomUtil.randomDouble(60, 90));
                recommendUsers.add(recommendUser);
            }
        }

        //3.批量获取推荐好友的用户id查询用户详情
        List<Long> userIds = CollUtil.getFieldValues(recommendUsers, "userId", Long.class);
        Map<Long, UserInfo> userInfoMap = userInfoApi.batchQueryUserInfo(userIds, null);
        //4.遍历users集合,构造vo对象
        List<TodayBest> todayBests = new ArrayList<>();
        for (RecommendUser recommendUser : recommendUsers) {
            Long id = recommendUser.getUserId();
            UserInfo userInfo = userInfoMap.get(id);

            if(userInfo != null){
                TodayBest todayBest = TodayBest.init(userInfo, recommendUser);
                todayBests.add(todayBest);
            }
        }

        return todayBests;
    }

api层


    /**
     *
     *卡片的推荐好友数据列表
     * 1.排除已喜欢或已不喜欢的用户
     * 2.构建查询推荐好友的条件
     * 3.
     */
    public List<RecommendUser> lookCardsList(Long userId, int count) {

        //1.根据用户的id查询用户已喜欢或不喜欢的用户
        Criteria criteria = Criteria.where("userId").is(userId);
        Query query = Query.query(criteria);
        List<UserLike> userLikes = mongoTemplate.find(query, UserLike.class);
        //2.提取里面已喜欢或已不喜欢的用户id,用户已喜欢或已不喜欢的用户的id在User_like表是likeUserId字段
                                                                   //在好友推荐表里是userId字段
        List<Long> likeUserIds = CollUtil.getFieldValues(userLikes, "likeUserId", Long.class);


        //3.构造查询推荐好友的条件,排除已喜欢或不喜欢的用户
        Criteria nin = Criteria.where("toUserId").is(userId).and("userId").nin(likeUserIds);
        //4.统计函数,随机推荐好友
        TypedAggregation<RecommendUser> aggregation = TypedAggregation.newAggregation(RecommendUser.class,
                                                                       Aggregation.match(nin),//查询条件,注意,这个查询条件不能写成上面那个criteria
                                                                       Aggregation.sample(count));//

        AggregationResults<RecommendUser> results = mongoTemplate.aggregate(aggregation, RecommendUser.class);
        List<RecommendUser> mappedResults = results.getMappedResults();

        return mappedResults;
    }

二、右滑喜欢

思路:

1667303045837

1667303767613

代码实现

TanHuaController

 /**
     * 右滑,喜欢:
     * 请求路径:/tanhua/:id/love
     * 请求方式:get
     * 请求参数:路径参数id,喜欢的用户id
     * 响应数据:null
     *
     */
    @GetMapping("/{id}/love")
    public ResponseEntity love(@PathVariable("id") Long likeUserId){
        tanHuaService.love(likeUserId);//喜欢的用户id
        return ResponseEntity.ok(null);
    }

TanHuaService


    @Autowired
    private MessagesService messagesService;
    /**
     *右滑,喜欢
     */
    public void love(Long likeUserId) {

        //1.操作UserLike表,保存喜欢的数据到MongoDB
       Boolean result =  userLikeApi.saveOrUpdate(ThreadLocalUtils.getUserId(),likeUserId,true);
       //2.判断是否保存成功
        if(!result){
            throw new BusinessException(ErrorResult.error());
        }

        //3.操作redis,首先将喜欢的人从不喜欢集合中删除,再将喜欢的的人添加到喜欢的集合数据
        redisTemplate.opsForSet().remove(Constants.USER_NOT_LIKE_KEY + ThreadLocalUtils.getUserId(), likeUserId.toString());
        redisTemplate.opsForSet().add(Constants.USER_LIKE_KEY + ThreadLocalUtils.getUserId(), likeUserId.toString());

        //4.判断是否互相喜欢
        Boolean like = isLike(likeUserId, ThreadLocalUtils.getUserId());

        if(like){
            //互相喜欢,添加为好友
            messagesService.addFriend(likeUserId);
        }
    }

    public Boolean isLike(Long userId,Long likeUserId ){
        //
        String key = Constants.USER_LIKE_KEY +userId;
        //判断对方的喜欢集合里是否有我的id
        return redisTemplate.opsForSet().isMember(key, likeUserId.toString());
    }

UserLikeApiImpl

/**
 *保存或或更新喜欢的用户信息
 */
public Boolean saveOrUpdate(Long userId, Long likeUserId, boolean isLike) {

    try {
        //1.先查询UserLike表是否有数据
        Criteria criteria = Criteria.where("userId").is(userId).and("likeUserId").is(likeUserId);
        Query query = Query.query(criteria);

        UserLike userLike  = mongoTemplate.findOne(query, UserLike.class);
        if(userLike == null){
            //没有,保存数据
            userLike = new UserLike();
            userLike.setUserId(userId);
            userLike.setLikeUserId(likeUserId);
            userLike.setCreated(System.currentTimeMillis());
            userLike.setIsLike(isLike);
            mongoTemplate.save(userLike);
        }else{
            //有数据,更新数据
            Update update = Update.update("isLike", isLike).set("updated", System.currentTimeMillis());

            mongoTemplate.updateFirst(query, update, UserLike.class);
        }

        return true;
    }catch (Exception e){
        e.printStackTrace();

        return false;
    }



}

三、左滑不喜欢

TanHuaController


/**
     * 左滑,不喜欢
     * 请求路径:/tanhua/:id/unlove
     * 请求方式:get
     * 请求参数:路径参数id,不喜欢的人的用户id
     */
    @GetMapping("/{id}/unlove")
    public ResponseEntity unLove(@PathVariable("id") Long unLikeUserId){

        tanHuaService.unLove(unLikeUserId);
        return ResponseEntity.ok(null);
    }

TanHuaService

**
     * 左滑不喜欢
     * @param unLikeUserId
     */
    public void unLove(Long unLikeUserId) {
        //1.保存不喜欢的记录到数据库,操作的是mongoDb
        Boolean result = userLikeApi.saveOrUpdate(ThreadLocalUtils.getUserId(), unLikeUserId, false);

        if(!result){
            throw new BusinessException(ErrorResult.error());
        }


        //2.操作redis,在喜欢的集合中剔除名单,在不喜欢的集合中添加名单
        redisTemplate.opsForSet().remove(Constants.USER_LIKE_KEY+ThreadLocalUtils.getUserId(), unLikeUserId.toString());
        redisTemplate.opsForSet().add(Constants.USER_NOT_LIKE_KEY+ThreadLocalUtils.getUserId(), unLikeUserId.toString());

标签:功能,likeUserId,22,userId,用户,Long,喜欢,探花,id
From: https://www.cnblogs.com/zhangdashuaige/p/16850918.html

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