java 常用工具封装日期类

常用的日期类进行封装，避免以后在调用日期的时候在此写该方法那么会导致项目臃肿。
返回当前星期的Map集合
/*
* 返回参数所在星期的七天，如传入'2021-06-02'星期四，则返回所在星期周一到周日的Map
* @param date
* @return Map
* */
public static HashMap getWeekDates(Date date){
    HashMap dates = new HashMap();
    Calendar c= Calendar.getInstance();
    c.setTime(date);
    c.setFirstDayOfWeek(Calendar.MONDAY);
    int index = c.get(Calendar.DAY_OF_WEEK);
    c.add(Calendar.DAY_OF_WEEK,(-1) * (index - 1));
    c.add(Calendar.DAY_OF_WEEK,(-1) * (index - 1));
    dates.put("MON",c.getTime());
    c.add(Calendar.DAY_OF_WEEK,1);
    dates.put("TUE",c.getTime());
    c.add(Calendar.DAY_OF_WEEK,1);
    dates.put("WED",c.getTime());
    c.add(Calendar.DAY_OF_WEEK,1);
    dates.put("THU",c.getTime());
    c.add(Calendar.DAY_OF_WEEK,1);
    dates.put("FRI",c.getTime());
    c.add(Calendar.DAY_OF_WEEK,1);
    dates.put("SAT",c.getTime());
    c.add(Calendar.DAY_OF_WEEK,1);
    dates.put("SUN",c.getTime());
    return dates;
}



/*
 * param date
 * pram number
 * return 几天后的时间日期
 * */
public static Date getDateByTaDay(Date date,int number){
    Calendar calendar = Calendar.getInstance();
    calendar.setTime(date);
    calendar.add(Calendar.DAY_OF_YEAR,number);
    Date nextDay = calendar.getTime();
    return nextDay;
}

/*
 * param date
 * param number 几天后的时间日期
 * return 几天后的时间日期去除时分秒
 * */
public static Date getDateByYID(Date date,int number){
    Calendar calendar = Calendar.getInstance();
    calendar.setTime(date);
    calendar.add(Calendar.DAY_OF_YEAR,number);
    Date nextDay = calendar.getTime();
    nextDay.setHours(0);
    nextDay.setMonth(0);
    nextDay.setSeconds(0);
    return  nextDay;
}
/*
 * @param beforeDate
 * @param lastDate
 * @param days 间隔天数
 * @return 判断两个日期的间隔天数是否超过参数值 超过返回true 未超过返回false
 * */
public static boolean checkDistanceDay(Date beforeDate,Date lastDate,int days){
    long interval = 0L;
    if (beforeDate.before(lastDate)){
        interval = lastDate.getTime() - beforeDate.getTime();
    }else{
        interval = beforeDate.getTime() - lastDate.getTime();
    }
    int betweenDays = (int)(interval)/(1000 * 60 * 60 * 24);
    if (betweenDays > days){
        return true;
    }else{
        return false;
    }
}
/*
 * @param Date
 * @return 返回参数日期所在季度，1：第一季度 2：第二季度 3：第三季度 4：第四季度
 * */
public static int getQuarter(Date date){
    Calendar cal = Calendar.getInstance();
    cal.setTime(date);
    int month = cal.get(Calendar.MONTH);
    switch (month){
        case 0:
            return 1;
        case 1:
            return 1;
        case 2:
            return 1;
        case 3:
            return 2;
        case 4:
            return 2;
        case 5:
            return 2;
        case 6:
            return 3;
        case 7:
            return 3;
        case 8:
            return 3;
        case 9:
            return 4;
        case 10:
            return 4;
        case 11:
            return 4;
        default:;
    }
    return -1;
}

/*
 * 把分钟转换成小时
 * @param mins
 * return 小时
 * */
public static String formatMinutesHours(Long mins){
    if (mins == null || mins.longValue() == 0){
        return "0";
    }
    return  (mins / 60 < 10 ? "0"+mins / 60 : mins / 60)+":"+ StringUtils.leftPad(""+mins % 60,2,"0");
}

/*
 * 删除给定Date的时分秒毫秒
 * */
public static Date truncateTimeOfDate(Date now){
    if ( null == now){
        return null;
    }
    Calendar day = Calendar.getInstance();
    day.setTime(now);
    day.set(Calendar.HOUR_OF_DAY,0);
    day.set(Calendar.MINUTE,0);
    day.set(Calendar.SECOND,0);
    day.set(Calendar.MILLISECOND,0);
    return day.getTime();
}

/*
* 获取两个日期之间的所有日期
* @param startDate
* @param endDate
* @return
* */
public static List getIntervalDates(Date startDate, Date endDate){
    List result = new ArrayList();
    Long intervalDay = getDateInterval(DataConvertUtil.truncateTimeOfDate(startDate), DataConvertUtil.truncateTimeOfDate(endDate));
    if (intervalDay < 0){
        return result;
    }
    for (Long len = 0L ; len <= intervalDay ; len++){
        Date currentDate = addDateFieId(startDate, Calendar.DATE, len.intValue());
        result.add(currentDate);
    }
    return result;
}
public  static Date addDateFieId(Date now,int fieid,int amount){
    if (now == null){
        return null;
    }
    if (amount == 0){
        return now;
    }
    Calendar dar = Calendar.getInstance();
    dar.setTime(now);
    dar.add(fieid,amount);
    return dar.getTime();
}

/*
* 计算当月有多少天
* @param year年
* @param month 月
* */
public static int days(int year,int month){
    int days = 0;
    if (month != 2){
        switch (month){
            case 1:
            case 3:
            case 5:
            case 7:
            case 8:
            case 10:
            case 12:
                days=31;
                break;
            case 4:
            case 6:
            case 9:
            case 11:
                days = 30;
                break;
        }
    }else{
        if ( year % 4 == 0 && year % 100 != 0 || year % 400 == 0){
            days = 29;
        }else{
            days = 28;
        }
    }
    return days;
}

/*
* 求两个日期差
* @param beginDate 开始日期
* @param endDate 结束日期
* @return 两个日期相差天数
* */
public static Long getDateInterval(Date starDate,Date endDate){
    if (starDate.after(endDate)){
        return -1L;
    }
    long interval = endDate.getTime() - starDate.getTime();
    return interval / (1000 * 60 * 60 *24);
}

public static String  getDataYID(Date date){

    SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyyMMdd");

    String format = simpleDateFormat.format(date);

    return format;
}

public static String getDateYIDString(String date) throws ParseException {

    SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

    Date parse = simpleDateFormat.parse(date);

    return  getDataYID(parse);
}


public static String  getDataHour(Date date){

    SimpleDateFormat simpleDateFormat = new SimpleDateFormat("HHmmss");

    String format = simpleDateFormat.format(date);

    return format;
}
java 常用工具封装日期类

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