Java实现抽奖模块的相关分享
最近进行的项目中，有个抽奖的需求，今天就把相关代码给大家分享一下。
一、DAO层
代码语言：javascript复制/**
* 获取奖品列表
* @param systemVersion 手机系统版本(1-安卓 2-iOS)
* @Date: 2021/6/7
*/
List<LuckyPrize> getPrizeList(int systemVersion);二、mapper.xml
代码语言：javascript复制<select id="getPrizeList">
SELECT *
FROM system_card sc
LEFT JOIN lucky_prize lp ON sc.system_card_id = lp.system_card_id
WHERE sc.`status` = 1
AND sc.category = 3
AND sc.system_version = #{systemVersion}
</select>三、service层
代码语言：javascript复制//签到抽奖
LuckyPrizeVo startSignDraw(Integer systemVersion);
//积分抽奖
LuckyPrizeVo startIntegralDraw(Integer systemVersion);其中入参systemVersion为手机系统，1是安卓 2是苹果
四、实现层
查看代码
代码语言：javascript复制 /**
* 开始签到抽奖
*/
@Override
public LuckyPrizeVo startSignDraw(Integer systemVersion) {
//判断用户是否有抽奖机会
String userId = TokenUtil.getUserId();
UserSign userSign = userSignMapper.selectOne(new QueryWrapper<UserSign>().eq("user_id", userId).eq("luck_chance", 1));
if (null == userSign) {
throw new BusinessException("连续成功签到7天才可参与抽奖!");
}
//判断上次签到时间是否在本周
Date nowTime = new Date();
Date lastSignTime = userSign.getLastSignTime();
boolean flag = DateUtil.isSameWeek(nowTime, lastSignTime);
if (!flag) {
throw new BusinessException("连续成功签到7天才可参与转盘抽奖");
}
//同一周的,可以抽奖，调用定义的私有方法：luckyDraw(systemVersion)
LuckyPrizeVo luckyPrizeVo = luckyDraw(systemVersion);
//中奖了
//用户签到机会 改为0
userSign.setLuckChance(0);
userSignMapper.updateById(userSign);
//记录表添加一条数据
LuckyPrizeLog luckyPrizeLog = new LuckyPrizeLog();
luckyPrizeLog.setLogId(SnowflakeUtil.genId());
luckyPrizeLog.setLuckyPrizeId(luckyPrizeVo.getLuckyPrizeId());
luckyPrizeLog.setUserId(userId);
luckyPrizeLog.setPrizeName(luckyPrizeVo.getCardName());
luckyPrizeLog.setCreateTime(nowTime);
luckyPrizeLogMapper.insert(luckyPrizeLog);
//用户卡卷添加一条数据
UserCard userCard = new UserCard();
userCard.setUserCardId(SnowflakeUtil.genId());
userCard.setUserId(userId);
userCard.setSystemCardId(luckyPrizeVo.getSystemCardId());
int systemCardType = luckyPrizeVo.getSystemCardType();
userCard.setType(systemCardType);
userCard.setStatus(0);
userCard.setCreateTime(nowTime);
if (systemCardType == 1 || systemCardType == 2) {
//折扣卷和体验卷有效期为30天
Calendar calendar = Calendar.getInstance();
calendar.add(Calendar.DATE, 30);
Date date = calendar.getTime();
userCard.setExpirationDate(date);
}
userCard.setRules(luckyPrizeVo.getSystemRules());
userCardMapper.insert(userCard);
return luckyPrizeVo;
}查看代码
代码语言：javascript复制 /**
* 开始积分抽奖
*/
@Override
public LuckyPrizeVo startIntegralDraw(Integer systemVersion) {
//判断用户是否有抽奖资格（100积分抽一次）
String userId = TokenUtil.getUserId();
UserExperience userExperience = userExperienceMapper.selectById(userId);
if (null == userExperience) {
throw new BusinessException("您的积分异常");
}
int integral = userExperience.getIntegral();
//积分满100，抽一次
int score = 100;
if (integral < score) {
throw new BusinessException("您的积分不足,无法参与抽奖");
}
LuckyPrizeVo luckyPrizeVo = luckyDraw(systemVersion);
//中奖了
//更新用户积分
int newIntegral = integral - 100;
userExperience.setIntegral(newIntegral);
userExperienceMapper.updateById(userExperience);
Date nowTime = new Date();
//记录表添加一条数据
LuckyPrizeLog luckyPrizeLog = new LuckyPrizeLog();
luckyPrizeLog.setLogId(SnowflakeUtil.genId());
luckyPrizeLog.setLuckyPrizeId(luckyPrizeVo.getLuckyPrizeId());
luckyPrizeLog.setUserId(userId);
luckyPrizeLog.setPrizeName(luckyPrizeVo.getCardName());
luckyPrizeLog.setCreateTime(nowTime);
luckyPrizeLogMapper.insert(luckyPrizeLog);
//用户卡卷添加一条数据
UserCard userCard = new UserCard();
userCard.setUserCardId(SnowflakeUtil.genId());
userCard.setUserId(userId);
userCard.setSystemCardId(luckyPrizeVo.getSystemCardId());
int systemCardType = luckyPrizeVo.getSystemCardType();
userCard.setType(systemCardType);
userCard.setStatus(0);
userCard.setCreateTime(nowTime);
if (systemCardType == 1 || systemCardType == 2) {
//折扣卷和体验卷有效期为30天
Calendar calendar = Calendar.getInstance();
calendar.add(Calendar.DATE, 30);
Date date = calendar.getTime();
userCard.setExpirationDate(date);
}
userCard.setRules(luckyPrizeVo.getSystemRules());
userCardMapper.insert(userCard);
return luckyPrizeVo;
}提示：
1.可能我的需求与大家不一样，具体还是要看各位的需求要有所改动，但大体的思路可以参考我的代码； 2.项目中，继承了mabytis-plus，还封装了一些工具类，以及结果的统一处理。
五、Controller层
代码语言：javascript复制 @PostMapping("/startSignDraw")
@ApiOperation(value = "签到抽奖")
@Log(title = "签到抽奖")
public String startSignDraw(@RequestBody SystemVersionDto dto) {
LuckyPrizeVo luckyPrizeVo = luckyPrizeService.startSignDraw(Integer.valueOf(dto.getSystemVersion()));
return Result.success(luckyPrizeVo);
}
@PostMapping("/startIntegralDraw")
@ApiOperation(value = "积分抽奖")
@Log(title = "积分抽奖")
public String startIntegralDraw(@RequestBody SystemVersionDto dto) {
LuckyPrizeVo luckyPrizeVo = luckyPrizeService.startIntegralDraw(Integer.valueOf(dto.getSystemVersion()));
return Result.success(luckyPrizeVo);
}最后，附上建表sql： 六、建表SQL语句
代码语言：javascript复制CREATE TABLE `lucky_prize` (
`lucky_prize_id` char(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL COMMENT '奖品id',
`system_card_id` char(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT NULL COMMENT '系统卡卷id',
`system_version` tinyint(1) DEFAULT NULL COMMENT '手机系统版本(1-安卓 2-iOS)',
`remark` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT NULL COMMENT '备注',
`probability` double(3,2) NOT NULL COMMENT '抽奖概率',
`num` int DEFAULT NULL COMMENT '奖品数量',
PRIMARY KEY (`lucky_prize_id`) USING BTREE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci ROW_FORMAT=DYNAMIC COMMENT='奖品表';CREATE TABLE `lucky_prize_log` (
`log_id` char(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL COMMENT '记录id',
`lucky_prize_id` char(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT NULL COMMENT '奖品id',
`user_id` char(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT NULL COMMENT '抽奖用户id',
`prize_name` char(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT NULL COMMENT '奖品名称',
`create_time` datetime DEFAULT NULL COMMENT '抽奖时间',
PRIMARY KEY (`log_id`) USING BTREE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci ROW_FORMAT=DYNAMIC COMMENT='抽奖记录表';CREATE TABLE `system_card` (
`system_card_id` char(18) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '系统卡卷id',
`card_name` char(30) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL COMMENT '卡卷名称',
`type` tinyint(1) NOT NULL COMMENT '卡卷类型(0谢谢参与卷 1折扣卷 2vip体验卷 3经验卷)',
`count` int DEFAULT NULL COMMENT '卡卷数量(个)',
`is_count` tinyint(1) NOT NULL DEFAULT '0' COMMENT '是否有数量(0否 1是)默认为0',
`status` tinyint(1) NOT NULL DEFAULT '1' COMMENT '状态(0未启用，1已启用，2已下线) 默认为1',
`failure_time` tinyint(1) NOT NULL COMMENT '卡卷时效时间(天)',
`is_failure_time` tinyint(1) NOT NULL DEFAULT '0' COMMENT '是否有时效时间(0否 1是)默认为0',
`create_time` datetime NOT NULL ON UPDATE CURRENT_TIMESTAMP COMMENT '创建时间',
`update_time` datetime DEFAULT NULL COMMENT '修改时间',
`remark` char(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT NULL COMMENT '备注',
`rules` double(5,2) NOT NULL COMMENT '卡卷规则',
`category` tinyint(1) DEFAULT NULL COMMENT '卡卷种类(1-普通类 2-积分兑换类 3-转盘类)',
`system_version` tinyint(1) DEFAULT NULL COMMENT '手机系统版本(1-安卓 2-iOS)',
`required_points` int DEFAULT NULL COMMENT '积分卷所需积分',
PRIMARY KEY (`system_card_id`) USING BTREE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci ROW_FORMAT=DYNAMIC COMMENT='系统卡卷';CREATE TABLE `user_sign` (
`user_id` char(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL COMMENT '用户id',
`is_monday` tinyint(1) DEFAULT '0' COMMENT '周一是否签到(0无 1有)',
`is_tuesday` tinyint(1) DEFAULT '0' COMMENT '周二是否签到(0无 1有)',
`is_wednesday` tinyint(1) DEFAULT '0' COMMENT '周三是否签到(0无 1有)',
`is_thursday` tinyint(1) DEFAULT '0' COMMENT '周四是否签到(0无 1有)',
`is_friday` tinyint(1) DEFAULT '0' COMMENT '周五是否签到(0无 1有)',
`is_saturday` tinyint(1) DEFAULT '0' COMMENT '周六是否签到(0无 1有)',
`is_sunday` tinyint(1) DEFAULT '0' COMMENT '周末是否签到(0无 1有)',
`last_sign_time` datetime DEFAULT NULL COMMENT '最近一次签到时间',
`luck_chance` tinyint(1) DEFAULT '0' COMMENT '抽奖机会（0无 1有）',
PRIMARY KEY (`user_id`) USING BTREE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci ROW_FORMAT=DYNAMIC COMMENT='用户签到记录表';
