java实现砸金蛋抽奖功能

 /** * 金蛋抽奖 * userId : 抽奖用户ID * consumeType : 抽奖消耗的物品 1：金币 2：次数 */ @Override public Map eggsLottery(Integer userId, Integer consumeType) { /*******first : check user ************/ checkUserIsLock(userId); logger.info("userId {} start lottery -eggs.", userId); Jedis jedis = RedisPool.getJedis(); try { //查询活动开关 String hget = jedis.hget(Rkey.SMASH_GOLD_EGGS_GLOBAL_CONFIG, "status"); if (null == hget || "0".equals(hget)) { throw new BusiException(E.INVALID_PARAMETER, "活动暂未开启,敬请期待"); } //check lottery type Long consumeScore = 0L; /**score lottery**/ consumeScore = jedis.hincrBy(Rkey.SMASH_GOLD_EGGS_GLOBAL_CONFIG, "consumeGoldScore", 0); if (consumeScore <1) { throw new BusiException(E.EGGS_ACTIVITY_CONFIG_EXCEPTION, "活动配置有误！"); } long surScore = goldWalletMapper.selectAmountGoldByUserId(userId); surScore = surScore - consumeScore; if (surScore <0) { throw new BusiException(E.SCORE_NOT_ENOUGH, "您的金币不足"); } // 砸金蛋之前扣除金币 Date now = new Date(); reduceGold(consumeScore, now, userId); /*******second : lottery ************/ Map map; try { map = lottery(jedis, now, userId, consumeScore); // 抽奖结束后 记录今日总共完成的抽奖次数 +1 // 必中 不加 jedis.hincrBy(Rkey.SMASH_GOLD_EGGS_USER_WIN_TOTAL_COUNT, userId.toString(), 1); } catch (Exception e) { throw e; } return map; } finally { RedisPool.returnJedis(jedis); } } /** * 抽奖 begin---- */ private Map lottery(Jedis jedis, Date now, Integer userId, Long consumeScore) { Map map = new HashMap(); // 判断本次是否是必中？ jackpotType=1： 不是 2:是必中 Integer jackpotType = 1; // 剩余次数 Integer freeCount = 0; String countStr = jedis.hget(Rkey.SMASH_GOLD_EGGS_USER_WIN_COUNT, userId.toString()); if (StringUtils.isNotEmpty(countStr)) { Integer count = Integer.valueOf(countStr); String whenAwardCount = jedis.hget(Rkey.SMASH_GOLD_EGGS_GLOBAL_CONFIG, "whenAwardCount"); if (StringUtils.isEmpty(whenAwardCount)) { throw new BusiException(E.INVALID_REQUEST, "请先完善砸金蛋全局配置"); } freeCount = Integer.valueOf(whenAwardCount) - count - 1; if (count >= Integer.valueOf(whenAwardCount) - 1) { logger.info("此次是必中...."); // 此次是必中 jackpotType = 2; // 抽奖结束后 先把记录总共完成的抽奖次数 置为0次 jedis.hdel(Rkey.SMASH_GOLD_EGGS_USER_WIN_COUNT, userId.toString()); jedis.hincrBy(Rkey.SMASH_GOLD_EGGS_USER_WIN_COUNT, userId.toString(), 0); } else { logger.info("此次不是必中...."); } if (freeCount == 0) { freeCount = Integer.valueOf(whenAwardCount); } } // 根据配置得到总的奖品数量 Integer totalCount = 0; if (jackpotType == 1) { totalCount = getAwardTotalCount(1); } else { totalCount = getAwardTotalCount(2); } Integer award = getRandomNumber(totalCount); // 看落在哪个区间 Integer awardId = getWinAwardId(award, jackpotType); BsGoldEggsConfig goldEggsConfig = goldEggsConfigMapper.selectById(awardId); if (goldEggsConfig == null) { throw new BusiException(E.INVALID_REQUEST, "奖品信息未找到"); } map.put("freeCount", freeCount); map.put("userId", userId); map.put("awardId", awardId); map.put("awardName", goldEggsConfig.getDescribe()); map.put("goldCount", goldEggsConfig.getGoldCount()); map.put("awardImg", goldEggsConfig.getAwardImg()); logger.info("userId {} win award {}, 奖励金币：{}, 随机生成抽奖数：{}", userId, goldEggsConfig.getDescribe(), goldEggsConfig.getGoldCount(), award); // 抽奖结束 action： if (jackpotType == 1) { // 抽奖结束后 记录累计抽奖次数 +1 // 必中 不加 jedis.hincrBy(Rkey.SMASH_GOLD_EGGS_USER_WIN_COUNT, userId.toString(), 1); } // 奖励金币结算 Date now1 = new Date(); lotteryAddGold(goldEggsConfig.getGoldCount().longValue(), now1, userId); return map; } /** * 得到中奖id * * @param award ： 随机生成的抽奖数字 * @return */ private Integer getWinAwardId(Integer award, Integer jackpotType) { List goldEggsConfigList = goldEggsConfigMapper.queryAllList(); if (goldEggsConfigList == null || goldEggsConfigList.size() <4) { throw new BusiException(E.INVALID_REQUEST, "请先完成砸金蛋奖品配置！"); } Integer[] weight = new Integer[4]; if (jackpotType == 1) { // 基础抽奖 for (int i = 0; i 

 /** * 抽奖 begin---- 该方法废除 */ private Map lottery2(Jedis jedis, Date now, Integer userId, Long consumeScore) { // 从奖池中拿出第一个奖品 String jackpotKey = Rkey.SMASH_GOLD_EGGS_JACKPOT_ + "one"; String baseWinLimitKey = Rkey.SMASH_GOLD_EGGS_AWARD_WIN_LIMIT_BASE; String nextWinLimitKey = Rkey.SMASH_GOLD_EGGS_AWARD_WIN_LIMIT_NEXT; Map map = new HashMap(); // 奖池存在 且奖池不为空 String awardFlag = jedis.lpop(jackpotKey);  // 如：20 Integer award = Integer.valueOf(awardFlag); // if (!StringUtils.isEmpty(awardFlag)) { // 判断该奖品的等级 // 这里是有问题的 博主后面纠正 Set winLimitSet = jedis.zrange(baseWinLimitKey, 0, award - 1); if (winLimitSet != null && !winLimitSet.isEmpty()) { Integer size = winLimitSet.size(); List list = new ArrayList(winLimitSet); // 取区间最后一个 String lastAwardLevel = String.valueOf(list.get(size - 1)); // 获取奖品info Integer id = null; if ("one".equals(lastAwardLevel)) { id = 1; } else if ("two".equals(lastAwardLevel)) { id = 2; } else if ("three".equals(lastAwardLevel)) { id = 3; } else if ("four".equals(lastAwardLevel)) { id = 4; } BsGoldEggsConfig goldEggsConfig = goldEggsConfigMapper.selectById(id); if (goldEggsConfig == null) { throw new BusiException(E.INVALID_REQUEST, "奖品信息未找到"); } map.put("userId", userId); map.put("awardId", id); map.put("awardName", goldEggsConfig.getDescribe()); map.put("goldCount", goldEggsConfig.getGoldCount()); logger.info("userId {} win award {}, 奖励金币：{}, 随机生成抽奖数：{}", userId, goldEggsConfig.getDescribe(), goldEggsConfig.getGoldCount(), award); } } return map; } /** * 生成奖池 * * @param jackpotType : 奖池类型 1：普通奖池 2：必中奖池 * @param jackpotSort ：奖池序号 1,2,3...... 如普通奖池1，普通奖池2， */ @Override public void addAwardToJackpot(Integer jackpotType, Integer jackpotSort) { // 存放奖池数据 List awadList = new ArrayList<>(); // 奖池key String jackpotKey = ""; String jackpotTypeToStr = ""; if (jackpotType == 1) { jackpotTypeToStr = "普通"; jackpotKey = Rkey.SMASH_GOLD_EGGS_JACKPOT_ + jackpotSort; } else { jackpotTypeToStr = "必中"; jackpotKey = Rkey.SMASH_GOLD_EGGS_NEXT_WIN_JACKPOT_ + jackpotSort; } logger.info("开始生成{}奖池{}。。。。。", jackpotTypeToStr, jackpotSort); Jedis jedis = RedisPool.getJedis(); try { if (jedis.exists(jackpotKey)) { // 判断奖池中是否还有奖品 Long length = jedis.llen(jackpotKey); if (length <= 0) { // 奖池空了，重新放入奖品 logger.info("{}奖池{}空了，重新放入奖品。。。。。", jackpotTypeToStr, jackpotSort); // 根据配置得到总的奖品数量 Integer totalCount = getAwardTotalCount(1); setSingleAwardToJackpot(awadList, jedis, jackpotKey, totalCount); } } else { // 直接生成奖池 logger.info("{}奖池{}不存在，直接放入奖品。。。。。", jackpotTypeToStr, jackpotSort); Integer totalCount = getAwardTotalCount(1); setSingleAwardToJackpot(awadList, jedis, jackpotKey, totalCount); } } finally { RedisPool.returnJedis(jedis); } } /** * 获取奖池奖品数量 * * @param type 奖池类型：1：普通奖池 2：必中奖池 * @return */ Integer getAwardTotalCount(Integer type) { List goldEggsConfigList = goldEggsConfigMapper.queryAllList(); if (goldEggsConfigList == null || goldEggsConfigList.size() <4) { throw new BusiException(E.INVALID_REQUEST, "请先完成砸金蛋奖品配置！"); } Integer totalCount = 0; if (type == 1) { // 普通奖池奖品数量 for (BsGoldEggsConfig goldEggsConfig : goldEggsConfigList) { totalCount += goldEggsConfig.getBaseWeight(); } } else { // 必中奖池数量 Jedis jedis = RedisPool.getJedis(); try { String mustAwardLevel = jedis.hget(Rkey.SMASH_GOLD_EGGS_GLOBAL_CONFIG, "mustAwardLevel"); if (StringUtils.isEmpty(mustAwardLevel)) { throw new BusiException(E.INVALID_REQUEST, "请先完成砸金蛋奖品配置！"); } for (int i = 0; i  awadList, Jedis jedis, String jackpotKey, Integer totalCount) { // 1.生成 100组 [1-100] 随机数 awadList for (int i = 0; i <2; i++) { List list = getOneToHundredNumber(totalCount); for (Integer j : list) { awadList.add(j.toString()); } } // 2.awadList打乱放入redis(list) 这里打乱2次 Collections.shuffle(awadList); Collections.shuffle(awadList); // 3.放入redis awadList.forEach(s -> jedis.lpush(jackpotKey, s)); logger.info("奖品info：预设值：{} 实际设置：{}", 10000, awadList.size()); } /** * jdk8 得到包含1-end数字的list * end : 生成数字的个数 * * @return */ private List getOneToHundredNumber(Integer end) { // 起始数字 int start = 1; // 生成数字的个数 // int end = 100; // 生成1,2,3,4,5...100 List list = Stream.iterate(start, item -> item + 1).limit(end).collect(Collectors.toList()); return list; }