redis存储点赞量，要求按照点赞量由多到少排序

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 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 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 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 getOrderByWorkNice(Long count){
ZSetOperations zSetOperations = kvIncrementRedisTemplate.opsForZSet();
Long min = new Long(0); return zSetOperations.reverseRange(KeyUtils.workNice(), min, count - 1); }