获取当年的周末 日期 并入库存放

直接上干货  根据传入的年份 获取全年的周末时间 周六和周日 


 public static List<Date> getAllWeekendDay(String newYear) {
        List<Date> strAllWeekendDayList = new ArrayList<>();
        try {
            SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyyy-MM-dd");
            Calendar date = Calendar.getInstance();
　　　　　　　//当年年份  如果没有传值 默认当年
            String currentYear = String.valueOf(date.get(Calendar.YEAR));
            String year = StringUtils.isEmpty(newYear) ? currentYear : newYear;
            Calendar c = Calendar.getInstance();
            c.set(Integer.parseInt(year), 0, 1);
            Calendar c2 = Calendar.getInstance();
            c2.set(Integer.parseInt(year) + 1, 0, 1);
            while (c.compareTo(c2) < 0) {
                if (c.get(Calendar.DAY_OF_WEEK) == Calendar.SATURDAY || c.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY) {
                    String weekendDay = c.get(Calendar.YEAR) + "-" + (c.get(Calendar.MONTH) + 1) + "-"
                            + c.get(Calendar.DAY_OF_MONTH);
//                    strAllWeekendDayList.add(weekendDay);
                    strAllWeekendDayList.add(simpleDateFormat.parse(weekendDay));
                    System.out.println(c.get(Calendar.YEAR) + "-" + (c.get(Calendar.MONTH) + 1) + "-"
                            + c.get(Calendar.DAY_OF_MONTH));
                }
                // 日期+1
                c.add(Calendar.DATE, 1);
            }
        } catch (Exception ex) {
            ex.printStackTrace();
        }
        return strAllWeekendDayList;
    }

根据日期 直接获取日期是周六还是周日 文章描述
//需要用到SimpleDateFormat  中的 EEEE

SimpleDateFormat sim1=new SimpleDateFormat("EEEE");
List<Date> dateWeekDayList = DateUtils.getAllWeekendDay(currentYear);
if (!CollectionUtil.isEmpty(dateWeekDayList)) {
    dateWeekDayList.forEach(e->{
    Weekday weekday = new Weekday();
    weekday.setYear(Integer.parseInt(currentYear));
    weekday.setDate(e);
　　//周六 周日 描述字段维护
    weekday.setDesc(sim1.format(e));
    weekdayMapper.insertSelective(weekday);
    });
}

mysql 数据库

CREATE TABLE `weekday` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`desc` varchar(200) DEFAULT NULL COMMENT '描述',
`year` int(5) DEFAULT NULL COMMENT '年份',
`date` date NOT NULL COMMENT '日期',
`is_holiday` int(1) DEFAULT '0' COMMENT '是否为国定假日（0：否；1：是）',
`is_work` int(1) DEFAULT '0' COMMENT '是否补班（0：否；1：是）',
PRIMARY KEY (`id`),
UNIQUE KEY `date` (`date`)
) ENGINE=InnoDB AUTO_INCREMENT=524 DEFAULT CHARSET=utf8 COMMENT='周末信息表';

数据展示