功能点需求,设计作品存在点赞量属性,该属性放入redis,现在需要安装点赞量排序,考虑redis的set,即对应ZSetOperations。
/** * 增加点赞量 * * @param workId * @return * @author qiaolu * @date 2015-12-19 */
public Double incrWorkNice(Long workId) { ZSetOperations<String,Long> zSetOperations = kvIncrementRedisTemplate.opsForZSet();
return zSetOperations.incrementScore(KeyUtils.workNice(),workId,1); }
/** * 减少点赞量 * * @param workId * @return * @author qiaolu * @date 2015-12-19 */
public Integer cutWorkNice(Long workId) {
ZSetOperations<String,Long> zSetOperations = kvIncrementRedisTemplate.opsForZSet(); return zSetOperations.incrementScore(KeyUtils.workNice(),workId,-1).intValue(); }
/** * 获取作品点赞量 * * @param workId 作品ID * @return Integer * @author qiaolu * @since 2015-12-19 */ public Integer getWorkNice(Long workId) {
ZSetOperations<String,Long> zSetOperations = kvIncrementRedisTemplate.opsForZSet();
return zSetOperations.score(KeyUtils.workNice(),workId).intValue(); }
/** * count 代表 查出来几个 返回id集合倒叙排 * @param count * @return Set * * @author qiaolu * @since 2016-1-22 */ public Set<Long> getOrderByWorkNice(Long count){
ZSetOperations<String,Long> zSetOperations = kvIncrementRedisTemplate.opsForZSet();
Long min = new Long(0); return zSetOperations.reverseRange(KeyUtils.workNice(), min, count - 1); }
redis存储点赞量,要求按照点赞量由多到少排序
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转载自jhonnnnnn.iteye.com/blog/2273684
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