java日期操作工具類

public class DateUtils {

    public static void main(String[] args) {
        System.out.println("當前小時開始："+getCurrentHourStartTime().toString());
        System.out.println("當前小時結束："+getCurrentHourEndTime().toString());
        System.out.println("當前天開始："+getCurrentDayStartTime().toString());
        System.out.println("當前天時結束："+getCurrentDayEndTime().toString());
        System.out.println("當前周開始："+getCurrentWeekDayStartTime().toString());
        System.out.println("當前周結束："+getCurrentWeekDayEndTime().toString());
        System.out.println("當前月開始："+getCurrentMonthStartTime().toString());
        System.out.println("當前月結束："+getCurrentMonthEndTime().toString());
        System.out.println("當前季度開始："+getCurrentQuarterStartTime().toString());
        System.out.println("當前季度結束："+getCurrentQuarterEndTime().toString());
        System.out.println("當前半年/後半年開始："+getHalfYearStartTime().toString());
        System.out.println("當前半年/後半年結束："+getHalfYearEndTime().toString());
        System.out.println("當前年開始："+getCurrentYearStartTime().toString());
        System.out.println("當前年結束："+getCurrentYearEndTime().toString());
        System.out.println("上月開始："+getCurrentLastMonthStartTime().toString());
        System.out.println("上月結束："+getCurrentLastMonthEndTime().toString());
        System.out.println("上年開始："+getLastYearStartTime().toString());
        System.out.println("上年結束："+getLastYearEndTime().toString());
        System.out.println("上季度開始："+getLastQuarterStartTime().toString());
        System.out.println("上季度結束："+getLastQuarterEndTime().toString());
        System.out.println("指定月份開始時間："+getBeginTime(5).toString());
        System.out.println("指定月份結束時間："+getEndTime(5).toString());
        System.out.println("N天前/後的時間："+getDateTime(5).toString());
    }

    /**
     * 獲取 當前年、半年、季度、月、日、小時 開始結束時間
     */

    private final static SimpleDateFormat shortSdf = new SimpleDateFormat("yyyy-MM-dd");
    private final static SimpleDateFormat longHourSdf = new SimpleDateFormat("yyyy-MM-dd HH");;
    private final static SimpleDateFormat longSdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    private final static SimpleDateFormat yearSdf = new SimpleDateFormat("yyyy");


    /**
     * 獲得本週的第一天，週一
     *
     * @return
     */
    public static Date getCurrentWeekDayStartTime() {
        Calendar c = Calendar.getInstance();
        try {
            int weekday = c.get(Calendar.DAY_OF_WEEK) - 2;
            c.add(Calendar.DATE, -weekday);
            c.setTime(longSdf.parse(shortSdf.format(c.getTime()) + " 00:00:00"));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return c.getTime();
    }

    /**
     * 獲取幾天前的時間
     * @param i eg: -1 一天前的時間
     * @return
     */
    public static String getDateTime(int i){
        SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date date=new Date();
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.add(Calendar.DAY_OF_MONTH, i);
        date = calendar.getTime();
        System.out.println(sdf.format(date));
        return sdf.format(date);
    }

    /**
     * 獲得本週的最後一天，週日
     *
     * @return
     */
    public static Date getCurrentWeekDayEndTime() {
        Calendar c = Calendar.getInstance();
        try {
            int weekday = c.get(Calendar.DAY_OF_WEEK);
            c.add(Calendar.DATE, 8 - weekday);
            c.setTime(longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59"));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return c.getTime();
    }

    /**
     * 獲得本天的開始時間
     *
     * @return
     */
    public static Date getCurrentDayStartTime() {
        Date now = new Date();
        try {
            now = shortSdf.parse(shortSdf.format(now));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;
    }

    /**
     * 獲得本天的結束時間
     *
     * @return
     */
    public static Date getCurrentDayEndTime() {
        Date now = new Date();
        try {
            now = longSdf.parse(shortSdf.format(now) + " 23:59:59");
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;
    }

    /**
     * 獲得本小時的開始時間
     *
     * @return
     */
    public static Date getCurrentHourStartTime() {
        Date now = new Date();
        try {
            now = longHourSdf.parse(longHourSdf.format(now));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;
    }

    /**
     * 獲得本小時的結束時間
     *
     * @return
     */
    public static Date getCurrentHourEndTime() {
        Date now = new Date();
        try {
            now = longSdf.parse(longHourSdf.format(now) + ":59:59");
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;
    }

    /**
     * 獲得本月的開始時間
     *
     * @return
     */
    public static Date getCurrentMonthStartTime() {
        Calendar c = Calendar.getInstance();
        Date now = null;
        try {
            c.set(Calendar.DATE, 1);
            now = shortSdf.parse(shortSdf.format(c.getTime()));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;
    }

    /**
     * 本月的結束時間
     *
     * @return
     */
    public static Date getCurrentMonthEndTime() {
        Calendar c = Calendar.getInstance();
        Date now = null;
        try {
            c.set(Calendar.DATE, 1);
            c.add(Calendar.MONTH, 1);
            c.add(Calendar.DATE, -1);
            now = longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59");
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;
    }

    /**
     * 獲取指定年月的開始時間
     * @param
     * @param month
     * @return
     */
    public static Date getBeginTime(int month) {
        Date date=new Date();
        int year=Integer.valueOf(yearSdf.format(date));
        YearMonth yearMonth = YearMonth.of(year, month);
        LocalDate localDate = yearMonth.atDay(1);
        LocalDateTime startOfDay = localDate.atStartOfDay();
        ZonedDateTime zonedDateTime = startOfDay.atZone(ZoneId.of("Asia/Shanghai"));

        return Date.from(zonedDateTime.toInstant());
    }

    /**
     * 獲取指定年月的結束時間
     * @param
     * @param month
     * @return
     */
    public static Date getEndTime(int month) {
        Date date=new Date();
        int year=Integer.valueOf(yearSdf.format(date));
        YearMonth yearMonth = YearMonth.of(year, month);
        LocalDate endOfMonth = yearMonth.atEndOfMonth();
        LocalDateTime localDateTime = endOfMonth.atTime(23, 59, 59, 999);
        ZonedDateTime zonedDateTime = localDateTime.atZone(ZoneId.of("Asia/Shanghai"));
        return Date.from(zonedDateTime.toInstant());
    }




    /**
     * 獲得上月的開始時間
     *
     * @return
     */
    public static Date getCurrentLastMonthStartTime() {
        Calendar c = Calendar.getInstance();
        Date now = null;
        try {
            c.add(Calendar.MONTH, -1);
            c.set(Calendar.DAY_OF_MONTH,
                    c.getActualMinimum(Calendar.DAY_OF_MONTH));
            now = shortSdf.parse(shortSdf.format(c.getTime()));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;
    }

    /**
     * 上月的結束時間
     *
     * @return
     */
    public static Date getCurrentLastMonthEndTime() {
        Calendar c = Calendar.getInstance();
        Date now = null;
        try {
            c.add(Calendar.MONTH, -1);
            c.set(Calendar.DAY_OF_MONTH,
                    c.getActualMaximum(Calendar.DAY_OF_MONTH));
            now = longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59");
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;
    }






    /**
     * 當前年的開始時間
     *
     * @return
     */
    public static Date getCurrentYearStartTime() {
        Calendar c = Calendar.getInstance();
        Date now = null;
        try {
            c.set(Calendar.MONTH, 0);
            c.set(Calendar.DATE, 1);
            now = shortSdf.parse(shortSdf.format(c.getTime()));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;
    }

    /**
     * 上一年的開始時間
     *
     * @return
     */
    public static Date getLastYearStartTime() {
        Calendar c = Calendar.getInstance();
        Date now = null;
        try {
            c.set(Calendar.MONTH, 0);
            c.set(Calendar.DATE, 1);
            c.add(Calendar.YEAR,-1);
            now = shortSdf.parse(shortSdf.format(c.getTime()));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;
    }

    /**
     * 當前年的結束時間
     *
     * @return
     */
    public static Date getCurrentYearEndTime() {
        Calendar c = Calendar.getInstance();
        Date now = null;
        try {
            c.set(Calendar.MONTH, 11);
            c.set(Calendar.DATE, 31);
            now = longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59");
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;
    }

    /**
     * 上一年的結束時間
     *
     * @return
     */
    public static Date getLastYearEndTime() {
        Calendar c = Calendar.getInstance();
        Date now = null;
        try {
            c.set(Calendar.MONTH, 11);
            c.set(Calendar.DATE, 31);
            c.add(Calendar.YEAR,-1);
            now = longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59");
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;
    }

    /**
     * 當前季度的開始時間
     *
     * @return
     */
    public static Date getCurrentQuarterStartTime() {
        Calendar c = Calendar.getInstance();
        int currentMonth = c.get(Calendar.MONTH) + 1;
        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;
    }

    /**
     * 上季度的開始時間
     *
     * @return
     */
    public static Date getLastQuarterStartTime() {
        Calendar c = Calendar.getInstance();
        int currentMonth = c.get(Calendar.MONTH) + 1;
        Date now = null;
        try {
            if (currentMonth >= 1 && currentMonth <= 3)
                c.set(Calendar.MONTH, -3);
            else if (currentMonth >= 4 && currentMonth <= 6)
                c.set(Calendar.MONTH, 0);
            else if (currentMonth >= 7 && currentMonth <= 9)
                c.set(Calendar.MONTH, 3);
            else if (currentMonth >= 10 && currentMonth <= 12)
                c.set(Calendar.MONTH, 6);
            c.set(Calendar.DATE, 1);
            now = longSdf.parse(shortSdf.format(c.getTime()) + " 00:00:00");
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;
    }

    /**
     * 當前季度的結束時間
     *
     * @return
     */
    public static Date getCurrentQuarterEndTime() {
        Calendar c = Calendar.getInstance();
        int currentMonth = c.get(Calendar.MONTH) + 1;
        Date now = null;
        try {
            if (currentMonth >= 1 && currentMonth <= 3) {
                c.set(Calendar.MONTH, 2);
                c.set(Calendar.DATE, 31);
            } else if (currentMonth >= 4 && currentMonth <= 6) {
                c.set(Calendar.MONTH, 5);
                c.set(Calendar.DATE, 30);
            } else if (currentMonth >= 7 && currentMonth <= 9) {
                c.set(Calendar.MONTH, 8);
                c.set(Calendar.DATE, 30);
            } else if (currentMonth >= 10 && currentMonth <= 12) {
                c.set(Calendar.MONTH, 11);
                c.set(Calendar.DATE, 31);
            }
            now = longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59");
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;
    }

    /**
     * 上季度的結束時間
     *
     * @return
     */
    public static Date getLastQuarterEndTime() {
        Calendar c = Calendar.getInstance();
        int currentMonth = c.get(Calendar.MONTH) + 1;
        Date now = null;
        try {
            if (currentMonth >= 1 && currentMonth <= 3) {
                c.set(Calendar.MONTH, -1);
                c.set(Calendar.DATE, 31);
            } else if (currentMonth >= 4 && currentMonth <= 6) {
                c.set(Calendar.MONTH, 2);
                c.set(Calendar.DATE, 30);
            } else if (currentMonth >= 7 && currentMonth <= 9) {
                c.set(Calendar.MONTH, 5);
                c.set(Calendar.DATE, 30);
            } else if (currentMonth >= 10 && currentMonth <= 12) {
                c.set(Calendar.MONTH, 8);
                c.set(Calendar.DATE, 31);
            }
            now = longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59");
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;
    }

    /**
     * 獲取前/後半年的開始時間
     *
     * @return
     */
    public static Date getHalfYearStartTime() {
        Calendar c = Calendar.getInstance();
        int currentMonth = c.get(Calendar.MONTH) + 1;
        Date now = null;
        try {
            if (currentMonth >= 1 && currentMonth <= 6) {
                c.set(Calendar.MONTH, 0);
            } else if (currentMonth >= 7 && currentMonth <= 12) {
                c.set(Calendar.MONTH, 6);
            }
            c.set(Calendar.DATE, 1);
            now = longSdf.parse(shortSdf.format(c.getTime()) + " 00:00:00");
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;

    }

    /**
     * 獲取前/後半年的結束時間
     *
     * @return
     */
    public static Date getHalfYearEndTime() {
        Calendar c = Calendar.getInstance();
        int currentMonth = c.get(Calendar.MONTH) + 1;
        Date now = null;
        try {
            if (currentMonth >= 1 && currentMonth <= 6) {
                c.set(Calendar.MONTH, 5);
                c.set(Calendar.DATE, 30);
            } else if (currentMonth >= 7 && currentMonth <= 12) {
                c.set(Calendar.MONTH, 11);
                c.set(Calendar.DATE, 31);
            }
            now = longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59");
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;
    }

    /**
     * 將長時間格式時間轉換爲字符串 yyyy-MM-dd HH:mm:ss
     *
     * @param dateDate
     * @return
     */
    public static String dateToStrLong(Date dateDate) {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        String dateString = formatter.format(dateDate);
        return dateString;
    }
}