【java时间工具】Java获取当天、本周、本月、本季度、本年等开始及结束时间

客官°小女子只卖身不卖艺 2023-03-06 03:56 15阅读 0赞

import java.sql.Timestamp;
    import java.text.ParseException;
    import java.text.SimpleDateFormat;
    import java.time.LocalDate;
    import java.time.Month;
    import java.time.ZoneOffset;
    import java.util.ArrayList;
    import java.util.Calendar;
    import java.util.Date;
    
    /**
     * 时间工具类
     *
     * @time 2020年5月11日 下午3:55:18
     */
    public class DateUtil {
    
        /**
         * YYYY_MM_ddHHmmss字符串转  YYYYMMdd
         *
         * @param Str
         * @return
         */
        public static String getYYYYMMddStr(String Str) {
            String needStr = "";
            try {
                Date date = getDateYYYY_MM_ddHHmmss(Str);
                needStr = getStrYYYYMMdd(date);
            } catch (Exception e) {
                // TODO: handle exception
            }
            return needStr;
        }
    
        /**
         * YYYYMMdd字符串转  YYYY-MM-dd
         *
         * @param Str
         * @return
         */
        public static String getYYYY_MM_ddStr(String Str) {
            String needStr = "";
            try {
                Date date = getDateYYYYMMdd(Str);
                needStr = getDateStr(date, "yyy-MM-dd");
            } catch (Exception e) {
                // TODO: handle exception
            }
            return needStr;
        }
    
        /**
         * YYYYMMdd字符串转  月份
         *
         * @param Str
         * @return
         */
        public static String getMonthStr(String Str) {
            String[] months = {"一月", "二月", "三月", "四月", "五月", "六月",
                    "七月", "八月", "九月", "十月", "十一月", "十二月"};
            String needStr = "";
            try {
                Date date = getDateYYYYMMdd(Str);
                needStr = getDateStr(date, "yyy-MM-dd");
            } catch (Exception e) {
                // TODO: handle exception
            }
            Integer monthIndex = Integer.parseInt(needStr.split("-")[1]) - 1;
    
            return months[monthIndex];
        }
    
        public static String getDateStr(Date date, String format) {
            SimpleDateFormat df = new SimpleDateFormat(format);
            return df.format(date);
        }
    
        public static String getStrYYYYMMdd(Date date) {
            SimpleDateFormat df = new SimpleDateFormat("yyyyMMdd");
            return df.format(date);
        }
    
        public static String getStrYYYYMMddHHmmss(Date date) {
            SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");
            return df.format(date);
        }
    
        public static String getStrYYYY_MM_ddHHmmss(Date date) {
            SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            return df.format(date);
        }
    
        public static String getCurrentDateTime() {
            Date date = new Date();
            SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            return df.format(date);
        }
    
        public static Date getDateYYYYMMdd(String str) throws ParseException {
            SimpleDateFormat df = new SimpleDateFormat("yyyyMMdd");
            return df.parse(str);
        }
    
        public static Date getDateYYYYMMddHHmmss(String str) throws ParseException {
            SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");
            return df.parse(str);
        }
    
        public static Date getDateYYYY_MM_ddHHmmss(String str) throws ParseException {
            SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            return df.parse(str);
        }
    
        public static Date getDate(Date date) throws ParseException {
            SimpleDateFormat sdf2 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            String sDate = sdf2.format(date);
            //Date date1 = getDateYYYY_MM_ddHHmmss(sDate);
            Date date1 = Timestamp.valueOf(sDate);
            return date1;
        }
    
        public static String getFetureDate(int past) {
            Calendar calendar = Calendar.getInstance();
            calendar.set(Calendar.DAY_OF_YEAR, calendar.get(Calendar.DAY_OF_YEAR) + past);
            Date today = calendar.getTime();
            SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
            String result = format.format(today);
            return result;
        }
    
        public static ArrayList<String> getFetureDateAll(int intervals) {
            ArrayList<String> fetureDaysList = new ArrayList<>();
            for (int i = 0; i < intervals; i++) {
                fetureDaysList.add(getFetureDate(i));
            }
            return fetureDaysList;
        }
    
        public static String dateToWeek(String datetime) {
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
            String[] weekDays = {"星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六"};
            Calendar cal = Calendar.getInstance();
            Date date;
            try {
                date = sdf.parse(datetime);
                cal.setTime(date);
            } catch (ParseException e) {
                e.printStackTrace();
            }
            int w = cal.get(Calendar.DAY_OF_WEEK) - 1;
            return weekDays[w];
        }
    
    
        public static String getOffsetStr(String format, Integer offsetDay) {
            //获取多少天之前的
            Calendar calendar1 = Calendar.getInstance();
            SimpleDateFormat sdf1 = new SimpleDateFormat(format);
            calendar1.add(Calendar.DATE, offsetDay);
            String agoDate = sdf1.format(calendar1.getTime());
            return agoDate;
        }
    
    
        /**
         * 获得当天0点时间
         *
         * @return
         */
        public static Date getTimesMorning() {
            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.getTime();
        }
    
        public static String getTimesMorningStr() {
            Date date = getTimesMorning();
            return getStrYYYY_MM_ddHHmmss(date);
        }
    
    
        /**
         * 获得本周一0点时间
         *
         * @return
         */
        public static Date getTimesWeekMorning() {
            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.getTime();
        }
    
        public static String getTimesWeekMorningStr() {
            Date date = getTimesWeekMorning();
            return getStrYYYY_MM_ddHHmmss(date);
        }
    
        /**
         * 获得本月第一天0点时间
         *
         * @return
         */
        public static Date getTimesMonthMorning() {
            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));
            return cal.getTime();
        }
    
        public static String getTimesMonthMorningStr() {
            Date date = getTimesMonthMorning();
            return getStrYYYY_MM_ddHHmmss(date);
        }
    
    
        /**
         * 获取本季度零点
         *
         * @return
         */
        public static Date getCurrentQuarterStartTime() {
            Calendar c = Calendar.getInstance();
            int currentMonth = c.get(Calendar.MONTH) + 1;
            SimpleDateFormat longSdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            SimpleDateFormat shortSdf = new SimpleDateFormat("yyyy-MM-dd");
            Date now = null;
            try {
                if (currentMonth >= 1 && currentMonth <= 3)
                    c.set(Calendar.MONTH, 0);
                else if (currentMonth >= 4 && currentMonth <= 6)
                    c.set(Calendar.MONTH, 3);
                else if (currentMonth >= 7 && currentMonth <= 9)
                    c.set(Calendar.MONTH, 4);
                else if (currentMonth >= 10 && currentMonth <= 12)
                    c.set(Calendar.MONTH, 9);
                c.set(Calendar.DATE, 1);
                now = longSdf.parse(shortSdf.format(c.getTime()) + " 00:00:00");
            } catch (Exception e) {
                e.printStackTrace();
            }
            return now;
        }
    
        public static String getCurrentQuarterStartTimeStr() {
            Date date = getStartDayOfQuarter();
            return getStrYYYY_MM_ddHHmmss(date);
        }
    
        /**
         * 本年度开始时间
         *
         * @return
         */
        public static Date getCurrentYearStartTime() {
            Calendar currCal = Calendar.getInstance();
            int currentYear = currCal.get(Calendar.YEAR);
            return getYearFirst(currentYear);
        }
    
    
        public static String getCurrentYearStartTimeStr() {
            Date date = getCurrentYearStartTime();
            return getStrYYYY_MM_ddHHmmss(date);
        }
    
        /**
         * 获取某年第一天日期
         *
         * @param year 年份
         * @return Date
         */
        public static Date getYearFirst(int year) {
            Calendar calendar = Calendar.getInstance();
            calendar.clear();
            calendar.set(Calendar.YEAR, year);
            Date currYearFirst = calendar.getTime();
            return currYearFirst;
        }
    
    
        /**
         * 获取某季度的第一天
         * @return
         */
        public static Date getStartDayOfQuarter() {
            LocalDate resDate = LocalDate.now();
            Month month = resDate.getMonth();
            Month firstMonthOfQuarter = month.firstMonthOfQuarter();
            resDate = LocalDate.of(resDate.getYear(), firstMonthOfQuarter, 1);
    
            return Date.from(resDate.atStartOfDay(ZoneOffset.ofHours(8)).toInstant());
        }
    
    
        public static void main(String[] args) {
            String result = getCurrentQuarterStartTimeStr();
            System.out.println(result);
        }
    
    }