【springboot+redis】实现粉丝数量、取消、列表展示等功能

等功能"/>

【springboot+redis】实现粉丝数量、取消、列表展示等功能

纪录下自己的代码，希望各位大佬指正
zset实现：粉丝/关注数量、取消关注、列表等功能
redis key:
粉丝列表：redis🔑fansList:id
关注列表：redis🔑attentionList:id

    /*** 获取粉丝、关注数量* @param request* @return*/@Overridepublic AjaxResult getFansAndAttentionNumsRedis(FansAndAttentionRequest request) {String fansKey = "redis:key:fansList:"+request.getUserId();String attentionKey = "redis:key:attentionList:"+request.getUserId();//粉丝Integer fansNum  = redisCache.zCount(fansKey).intValue();//关注Integer attentionNum = redisCache.zCount(attentionKey).intValue();FansAndAttentionResponse fansAndAttentionResponse = new FansAndAttentionResponse();fansAndAttentionResponse.setFansNums(fansNum);fansAndAttentionResponse.setAttentionNums(attentionNum);return AjaxResult.success(fansAndAttentionResponse);}/*** 新增关注* @param request* @return*/@Overridepublic AjaxResult addAttentionRedis(FansAndAttentionRequest request) {//当前用户关注keyString  attentionKey = "redis:key:attentionList:"+request.getUserId();//被关注人粉丝keyString fansKey = "redis:key:ansList:"+request.getAttentionId();//最多关注数量Set<String> fansScore = redisCache.zRange(attentionKey, -1L, -1L);Long fansMaxScore = 0L;if (!fansScore.isEmpty()){fansMaxScore = Long.valueOf(fansScore.iterator().next());}redisCache.setZSet(attentionKey, request.getAttentionId().toString(), fansMaxScore+1L);//粉丝列表新增Long attentionMaxScore = 0L;Set<String> attentionScore = redisCache.zRange(attentionKey, -1L, -1L);if (!attentionScore.isEmpty()){attentionMaxScore = Long.valueOf(attentionScore.iterator().next());}redisCache.setZSet(fansKey, request.getUserId().toString(),attentionMaxScore+1L);return AjaxResult.success();}/*** 取消关注* @param request* @return*/@Overridepublic AjaxResult cancelAttentionRedis(FansAndAttentionRequest request) {//被关注人keyString attentionKey = "redis:key:attentionList:"+request.getUserId();//关注人keyString fansKey = "redis:key:fansList:"+request.getAttentionId();//移除关注用户redisCache.removeZsetVal(attentionKey, request.getAttentionId().toString());//移除粉丝redisCache.removeZsetVal(fansKey, request.getUserId().toString());return AjaxResult.success();}/*** 获取关注、粉丝列表* @param request* @return*/@Overridepublic AjaxResult getUserAttentionOrFansListRedis(FansAndAttentionRequest request) {//关注=1，粉丝=2String redisKey = "";if (null == request.getType() || 1 == request.getType()) {redisKey = "redis:key:attentionList:"+request.getUserId();} else {redisKey = "redis:key:fansList:"+request.getUserId();}//查询带入数据List<UserAttentionFansDO> userAttentionFansList = new ArrayList<>();//分页范围Long minNum = Long.valueOf((request.getPageNum() - 1L) * request.getPageSize());Long maxNum  = Long.valueOf(request.getPageNum() * request.getPageSize());Long total = redisCache.zCount(redisKey);//获取redis关注、粉丝列表Set<ZSetOperations.TypedTuple> fansSet  = redisCache.getzSetRangeByScoreWithScores(redisKey, minNum, maxNum);if (!fansSet.isEmpty()){for ( ZSetOperations.TypedTuple zt : fansSet) {UserAttentionFansDO userAttentionFansDO = new UserAttentionFansDO();userAttentionFansDO.setAttentionId(Long.valueOf(zt.getValue().toString()));userAttentionFansList.add(userAttentionFansDO);}}//获取关注列表List<FansAndAttentionResponse> fansAndAttentionResponseList = new ArrayList();if (!userAttentionFansList.isEmpty()){fansAndAttentionResponseList = newlifeUserService.getUserAttentionList(userAttentionFansList);}//返回数据FansAndAttentionReturnResponse fansAndAttentionReturnResponse = new FansAndAttentionReturnResponse();fansAndAttentionReturnResponse.setRows(fansAndAttentionResponseList);fansAndAttentionReturnResponse.setTotal(total);return AjaxResult.success(fansAndAttentionReturnResponse);}