今天完成的事情：

完成了签到模块

前面施星大佬说用户表里边不能添加签到字段，要保持表的功能单一性，只能从下表中计算出“当前连续签到”，“总签到”，“最高连续签到”

虽然后边施星大佬回去看了下以前的学渣乐园项目，用户表里边都有签到字段，直接存储上面说的三个字段，不过都写出来了，不能浪费，就不改表结构，就按这个签到表来计算了

网上扒下来的工具类，改成我们想要的样子

public class SignUtil {
    // 获得当天0点时间
    public static long getTimesStart() {
        Calendar cal = Calendar.getInstance();
        cal.set(Calendar.HOUR_OF_DAY, 0);
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MINUTE, 0);
        cal.set(Calendar.MILLISECOND, 0);
        return cal.getTimeInMillis();
    }


    // 获得当天24点时间
    public static long getTimesEnd() {
        Calendar cal = Calendar.getInstance();
        cal.set(Calendar.HOUR_OF_DAY, 24);
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MINUTE, 0);
        cal.set(Calendar.MILLISECOND, 0);
        return cal.getTimeInMillis();
    }


    // 获得本周一0点时间
    public static long getTimesWeekStart() {
        Calendar cal = Calendar.getInstance();
        cal.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONDAY), cal.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
        cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
        return cal.getTimeInMillis();
    }

    // 获得本周日24点时间
    public  static long getTimesWeeknight() {
        Calendar cal = Calendar.getInstance();
        cal.setTimeInMillis(getTimesWeekStart());
        cal.add(Calendar.DAY_OF_WEEK, 7);
        return cal.getTimeInMillis();
    }


    // 获得本月第一天0点时间
    public static long getTimesMonthStart() {
        Calendar cal = Calendar.getInstance();
        cal.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONDAY), cal.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
        cal.set(Calendar.DAY_OF_MONTH, cal.getActualMinimum(Calendar.DAY_OF_MONTH));
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MILLISECOND, 0);
        return  cal.getTimeInMillis();
    }


    // 获得本月最后一天24点时间
    public static long getTimesMonthEnd() {
        Calendar cal = Calendar.getInstance();
        cal.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONDAY), cal.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
        cal.set(Calendar.DAY_OF_MONTH, cal.getActualMaximum(Calendar.DAY_OF_MONTH));
        cal.set(Calendar.HOUR_OF_DAY, 24);
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MILLISECOND, 0);
        return cal.getTimeInMillis();
    }

    //day1和day2是否为连续的一天
    public static boolean isContinue(long day1, long day2) {
        Calendar cal1 = Calendar.getInstance();
        Calendar cal2 = Calendar.getInstance();

        cal1.setTimeInMillis(day1);
        cal1.set(Calendar.HOUR_OF_DAY, 0);
        cal1.set(Calendar.MINUTE, 0);
        cal1.set(Calendar.SECOND, 0);
        cal1.set(Calendar.MILLISECOND, 0);

        cal2.setTimeInMillis(day2);
        cal2.set(Calendar.HOUR_OF_DAY, 0);
        cal2.set(Calendar.MINUTE, 0);
        cal2.set(Calendar.SECOND, 0);
        cal2.set(Calendar.MILLISECOND, 0);
        return cal1.getTimeInMillis()-cal2.getTimeInMillis()==86400000;
    }


    //day1和day2是否为同一天
    public static boolean isSameDay(long day1, long day2) {
        Calendar cal1 = Calendar.getInstance();
        Calendar cal2 = Calendar.getInstance();

        cal1.setTimeInMillis(day1);
        cal1.set(Calendar.HOUR_OF_DAY, 0);
        cal1.set(Calendar.MINUTE, 0);
        cal1.set(Calendar.SECOND, 0);
        cal1.set(Calendar.MILLISECOND, 0);

        cal2.setTimeInMillis(day2);
        cal2.set(Calendar.HOUR_OF_DAY, 0);
        cal2.set(Calendar.MINUTE, 0);
        cal2.set(Calendar.SECOND, 0);
        cal2.set(Calendar.MILLISECOND, 0);
        return cal1.getTimeInMillis()-cal2.getTimeInMillis()==0;
    }


    //判断day是否在当前月
    public static boolean isInCurrentMonth(long day) {
        return day < SignUtil.getTimesMonthEnd() && day >= SignUtil.getTimesMonthStart();
    }

    //取long时间类型的“天”数据
    public static int getDayDataByTimeInMillis(long time) {
        Calendar cal = Calendar.getInstance();
        cal.setTimeInMillis(time);
        return cal.get(Calendar.DAY_OF_MONTH);
    }

然后是控制器中的逻辑，展示签到历史：

@RequestMapping(value = "/a/u/signtest", method = RequestMethod.GET)
public String getSignHistoryTest(HttpServletRequest request,
                         HttpServletResponse response, ModelMap model) {
   Long uid = 5L;
   List<Integer> signHistory = new ArrayList<>();
   User user;
   int maxSignNum = 0;
   int totalSignNum;
   try {
      List<Long> signTimeStamp = signService.getSignIdsByUId(uid);

      totalSignNum = signTimeStamp.size();//签到总数

      user = userService.getObjectById(uid);

      //计算最高连续签到
      int ctn = 0;
      for (int i = 0; i < signTimeStamp.size() - 1; i++) {
         if (SignUtil.isContinue(signTimeStamp.get(i), signTimeStamp.get(i + 1))) {
    ctn++;
         } else {
                if (ctn > maxSignNum) {
        maxSignNum = ctn;
            }
         ctn = 0;
         }
      }

      //签到历史数组
      for (Long sign : signTimeStamp) {
         if (SignUtil.isInCurrentMonth(sign)) {
            signHistory.add(SignUtil.getDayDataByTimeInMillis(sign));
         }
      }
      Collections.sort(signHistory);

      model.addAttribute("code", 0);
      model.addAttribute("signHistory", signHistory);
      model.addAttribute("user", user);
      model.addAttribute("totalSignNum", totalSignNum);
      model.addAttribute("maxSignNum", maxSignNum);


   } catch (Throwable t) {
      log.error(t.getMessage());
      model.addAttribute("code", -100000);
   }


   return "data/signHistoryTest";
}

签到行为：

@RequestMapping(value = "/a/u/sign", method = RequestMethod.POST)
public String sign(ModelMap model) {
   Long uid = 10L;
   Sign sign = new Sign();
   sign.setUid(uid);
   try {
      //获取最近一次签到的时间
      Long currentSign = signService.getSignTimeByCurrent(uid);
      Long nowDay = System.currentTimeMillis();

      //若上面获取时间为今天，code设定为“今天已签到，请勿重复签到”
      if (SignUtil.isSameDay(currentSign, nowDay)) {
         signService.insert(sign);
         model.addAttribute("code", 0);
      } else {
         model.addAttribute("code", -2001);
      }

   } catch (Throwable t) {
      model.addAttribute("code", -100000);
   }
   return "data/sign";
}

明天计划的事情：

准备小课堂，讲小课堂

遇到的问题：

如何在控制器中获取uid，这个组员还没有解决

收获：

完成签到模块

进度：

签到模块已完成，讲完小课堂后进行视频前台模块的编写