业务需求是用户每天只能签到一次，而且签到后用户增加积分，所以把用户每次签到时放到redis 缓存里面，然后每天凌晨时再清除缓存，大概简单思想是这样的

直接看代码吧如下

@Transactional

@Override

public void signIn(Integer memberId) throws BizException {

if(memberId==null){

throw new BizException(ErrorCode.BIZ_EXCEPTION.getErrcode(), "签到用户id 不能为null");

}

String day = DateFormatUtils.format(new Date(), "yyyyMMdd");

String key = "signin:"+day;

Boolean sismember = redisClient.sismember(key, memberId.toString());

if(sismember){

throw new BizException(ErrorCode.BIZ_EXCEPTION.getErrcode(), "今天已经签到了");

}else{

redisClient.sadd(key, memberId.toString());

redisClient.expire(key, getRefreshTime());

addPointsRecord(memberId,IntegralType.SIGN_IN);//给用户增加积分

}

}

获取离凌晨 还有多久

/**

* 获取当前时间离明天凌晨还有多少小时

* @return

*/

public static int getRefreshTime(){

Calendar calendar = Calendar.getInstance();

int now = (int) (calendar.getTimeInMillis()/1000);

calendar.add(Calendar.DATE, 1);

calendar.set(Calendar.SECOND, 0);

calendar.set(Calendar.MINUTE, 0);

calendar.set(Calendar.HOUR_OF_DAY , 0);

return (int) (calendar.getTimeInMillis()/1000-now);

}

Controller

/**

* 签到

* @return

*/

@WeiXinLogin

@RequestMapping("/signIn")

public ResponseModel signIn(){

try {

Integer memberId = RequestContext.getContext().getUser().getMemberId();

memberApi.signIn(memberId);

return new ResponseModel();

} catch (BizException e) {

LOGGER.error("signIn error");

return new ResponseModel(e.getErrcode(), e.getErrm(), null);

}

}

以上就是java redis 实现简单的用户签到功能的详细内容，更多关于Java 实现用户签到功能的资料请关注自学编程网其它相关文章！