摘要:
在开放JAVA项目当中。有的项目对于时间筛选类的需求很多。为此,封装了一系列的时间操作方法做个分享。注意包如图 &...
在开放JAVA项目当中。有的项目对于时间筛选类的需求很多。为此,封装了一系列的时间操作方法做个分享。注意包如图
获取当天的开始时间
public static Date getDayBegin() { Calendar cal = new GregorianCalendar(); cal.set(Calendar.HOUR_OF_DAY, 0); cal.set(Calendar.MINUTE, 0); cal.set(Calendar.SECOND, 0); cal.set(Calendar.MILLISECOND, 0); return cal.getTime(); }
获取当天的结束时间
public static Date getDayEnd() { Calendar cal = new GregorianCalendar(); cal.set(Calendar.HOUR_OF_DAY, 23); cal.set(Calendar.MINUTE, 59); cal.set(Calendar.SECOND, 59); return cal.getTime(); }
获取昨天的开始时间
public static Date getBeginDayOfYesterday() { Calendar cal = new GregorianCalendar(); cal.setTime(getDayBegin()); cal.add(Calendar.DAY_OF_MONTH, -1); return cal.getTime(); }
获取昨天的结束时间
public static Date getEndDayOfYesterDay() { Calendar cal = new GregorianCalendar(); cal.setTime(getDayEnd()); cal.add(Calendar.DAY_OF_MONTH, -1); return cal.getTime(); }
获取明天的开始时间
public static Date getBeginDayOfTomorrow() { Calendar cal = new GregorianCalendar(); cal.setTime(getDayBegin()); cal.add(Calendar.DAY_OF_MONTH, 1); return cal.getTime(); }
获取明天的结束时间
public static Date getEndDayOfTomorrow() { Calendar cal = new GregorianCalendar(); cal.setTime(getDayEnd()); cal.add(Calendar.DAY_OF_MONTH, 1); return cal.getTime(); }
获取本周的开始时间
public static Date getBeginDayOfWeek() { Date date = new Date(); if (date == null) { return null; } Calendar cal = Calendar.getInstance(); cal.setTime(date); int dayofweek = cal.get(Calendar.DAY_OF_WEEK); if (dayofweek == 1) { dayofweek += 7; } cal.add(Calendar.DATE, 2 - dayofweek); return getDayStartTime(cal.getTime()); }
获取本周的结束时间
public static Date getEndDayOfWeek() { Calendar cal = Calendar.getInstance(); cal.setTime(getBeginDayOfWeek()); cal.add(Calendar.DAY_OF_WEEK, 6); Date weekEndSta = cal.getTime(); return getDayEndTime(weekEndSta); }
获取本月的开始时间
public static Date getBeginDayOfMonth() { Calendar calendar = Calendar.getInstance(); calendar.set(getNowYear(), getNowMonth() - 1, 1); return getDayStartTime(calendar.getTime()); }
获取本月的结束时间
public static Date getEndDayOfMonth() { Calendar calendar = Calendar.getInstance(); calendar.set(getNowYear(), getNowMonth() - 1, 1); int day = calendar.getActualMaximum(5); calendar.set(getNowYear(), getNowMonth() - 1, day); return getDayEndTime(calendar.getTime()); }
获取上个月的开始时间
public static Date getBeginDayOfLastMonth(int n) { Date date = new Date(); Calendar calendar = Calendar.getInstance(); calendar.setTime(date); calendar.add(calendar.MONTH, -n); calendar.set(calendar.DAY_OF_MONTH, 1); return getDayStartTime(calendar.getTime()); }
获取上个月的结束时间
public static Date getEndDayOfLastMonth(int n) { Date date = new Date(); Calendar calendar = Calendar.getInstance(); calendar.setTime(date); calendar.add(calendar.MONTH, -n); int day = calendar.getActualMaximum(5); calendar.set(calendar.DAY_OF_MONTH, day); return getDayEndTime(calendar.getTime()); }
获取本年的结束时间
public static Date getEndDayOfYear() { Calendar cal = Calendar.getInstance(); cal.set(Calendar.YEAR, getNowYear()); cal.set(Calendar.MONTH, Calendar.DECEMBER); cal.set(Calendar.DATE, 31); return getDayEndTime(cal.getTime()); }
获取本年的开始时间
public static Date getBeginDayOfYear() { Calendar cal = Calendar.getInstance(); cal.set(Calendar.YEAR, getNowYear()); cal.set(Calendar.MONTH, Calendar.JANUARY); cal.set(Calendar.DATE, 1); return getDayStartTime(cal.getTime()); }
获取n年前的开始时间
public static Date getBeginDayOfLastYear(int n) { Calendar cal = Calendar.getInstance(); cal.set(Calendar.YEAR, getNowYear() - n); cal.set(Calendar.MONTH, Calendar.JANUARY); cal.set(Calendar.DATE, 1); return getDayStartTime(cal.getTime()); }
获取n年前的结束时间
public static Date getEndDayOfLastYear(int n) { Calendar cal = Calendar.getInstance(); cal.set(Calendar.YEAR, getNowYear() - n); cal.set(Calendar.MONTH, Calendar.DECEMBER); cal.set(Calendar.DATE, 31); return getDayEndTime(cal.getTime()); }
获取某个日期的开始时间
public static Timestamp getDayStartTime(Date d) { Calendar calendar = Calendar.getInstance(); if (null != d) calendar.setTime(d); calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), 0, 0, 0); calendar.set(Calendar.MILLISECOND, 0); return new Timestamp(calendar.getTimeInMillis()); }
获取某个日期的结束时间
public static Timestamp getDayEndTime(Date d) { Calendar calendar = Calendar.getInstance(); if (null != d) calendar.setTime(d); calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), 23, 59, 59); calendar.set(Calendar.MILLISECOND, 999); return new Timestamp(calendar.getTimeInMillis()); }
获取今年是哪一年
// 获取今年是哪一年 public static Integer getNowYear() { Date date = new Date(); GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance(); gc.setTime(date); return gc.get(Calendar.YEAR); }
获取本月是哪一月
public static int getNowMonth() {
Date date = new Date();
GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();
gc.setTime(date);
return gc.get(Calendar.MONTH) + 1;
}
时间差值计算校验(开始与结束时间不可为空)
public static void dateMarginCheck(Date beginDate, Date endDate) { if (beginDate == null || endDate == null) { throw new IllegalArgumentException("getDiffDays param is null!"); } }
日期相减得到的天数(不足一天为1 超时为-1)
public static int getExactDiffDays(Date beginDate, Date endDate) { dateMarginCheck(beginDate, endDate); BigDecimal subtract = new BigDecimal(endDate.getTime()).subtract(new BigDecimal(beginDate.getTime())); BigDecimal divide = subtract.divide(new BigDecimal(1000 * 60 * 60 * 24), RoundingMode.UP); return divide.intValue(); }
两个日期相减得到的天数[不精确]
// 两个日期相减得到的天数
public static int getDiffDays(Date beginDate, Date endDate) { dateMarginCheck(beginDate, endDate); long diff = (endDate.getTime() - beginDate.getTime() - 1000) / (1000 * 60 * 60 * 24); return new Long(diff).intValue(); }
两个日期相减得到的小时
public static int getDiffHours(Date beginDate, Date endDate) { dateMarginCheck(beginDate, endDate); long diff = (endDate.getTime() - beginDate.getTime()) / (1000 * 60 * 60); return new Long(diff).intValue(); }
两个日期相减得到的毫秒数
public static long dateDiff(Date beginDate, Date endDate) { //开始时间或结束时间为空 返回0L 毫秒 if (beginDate == null || endDate == null) { return 0L; } long date1ms = beginDate.getTime(); long date2ms = endDate.getTime(); return date2ms - date1ms; }
获取两个日期中的最大日期
public static Date max(Date beginDate, Date endDate) { if (beginDate == null) { return endDate; } if (endDate == null) { return beginDate; } if (beginDate.after(endDate)) { return beginDate; } return endDate; }
获取两个日期中的最小日期
public static Date min(Date beginDate, Date endDate) { if (beginDate == null) { return endDate; } if (endDate == null) { return beginDate; } if (beginDate.after(endDate)) { return endDate; } return beginDate; }
返回某月该季度的第一个月
public static Date getFirstSeasonDate(Date date) { final int[] SEASON = {1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4}; Calendar cal = Calendar.getInstance(); cal.setTime(date); int sean = SEASON[cal.get(Calendar.MONTH)]; cal.set(Calendar.MONTH, sean * 3 - 3); return cal.getTime(); }
返回某个日期下几天的日期
public static Date getNextDay(Date date, int i) { Calendar cal = new GregorianCalendar(); cal.setTime(date); cal.set(Calendar.DATE, cal.get(Calendar.DATE) + i); return cal.getTime(); }
返回某个日期前几天的日期
public static Date getFrontDay(Date date, int i) { Calendar cal = new GregorianCalendar(); cal.setTime(date); cal.set(Calendar.DATE, cal.get(Calendar.DATE) - i); return cal.getTime(); }
获取某年某月到某年某月按天的切片日期集合
public static List getTimeList(int beginYear, int beginMonth, int endYear, int endMonth, int k) { List list = new ArrayList(); if (beginYear == endYear) { for (int j = beginMonth; j <= endMonth; j++) { list.add(getTimeList(beginYear, j, k)); } } else { { for (int j = beginMonth; j < 12; j++) { list.add(getTimeList(beginYear, j, k)); } for (int i = beginYear + 1; i < endYear; i++) { for (int j = 0; j < 12; j++) { list.add(getTimeList(i, j, k)); } } for (int j = 0; j <= endMonth; j++) { list.add(getTimeList(endYear, j, k)); } } } return list; }
获取某年某月按天切片日期集合(某个月间隔多少天的日期集合)
public static List getTimeList(int beginYear, int beginMonth, int k) { List list = new ArrayList(); Calendar begincal = new GregorianCalendar(beginYear, beginMonth, 1); int max = begincal.getActualMaximum(Calendar.DATE); for (int i = 1; i < max; i = i + k) { list.add(begincal.getTime()); begincal.add(Calendar.DATE, k); } begincal = new GregorianCalendar(beginYear, beginMonth, max); list.add(begincal.getTime()); return list; }
获取某年某月的第一天日期
public static Date getStartMonthDate(int year, int month) { Calendar calendar = Calendar.getInstance(); calendar.set(year, month - 1, 1, 0, 0, 0); return calendar.getTime(); }
获取某年某月的最后一天日期
public static Date getEndMonthDate(int year, int month) { Calendar calendar = Calendar.getInstance(); calendar.set(year, month - 1, 1); int day = calendar.getActualMaximum(5); calendar.set(year, month - 1, day, 23, 59, 59); return calendar.getTime(); }
年月日转化成 -> 年月日 时分秒
change( 2023-06-23 ) to ( 2023-06-23 23:59:59 ) public static Date getDateDetail(Date date) { Calendar calendar = Calendar.getInstance(); calendar.setTime(date); calendar.add(Calendar.HOUR, 23);//时 calendar.add(Calendar.MINUTE, 59);//时 calendar.add(Calendar.SECOND, 59);//秒 return calendar.getTime(); }
年月日自定义转化成 -> 年月日 时分秒
change( 2023-06-23 ) to ( 2023-06-23 ?:?:? ) public static Date getDateDetail(Date date, Integer hour, Integer minute, Integer second) { Calendar calendar = Calendar.getInstance(); calendar.setTime(date); calendar.add(Calendar.HOUR, hour);//时 calendar.add(Calendar.MINUTE, minute);//时 calendar.add(Calendar.SECOND, second);//秒 return calendar.getTime(); }
date2比date1多的天数
public static int differentDays(Date date1, Date date2) { Calendar cal1 = Calendar.getInstance(); cal1.setTime(date1); Calendar cal2 = Calendar.getInstance(); cal2.setTime(date2); int day1 = cal1.get(Calendar.DAY_OF_YEAR); int day2 = cal2.get(Calendar.DAY_OF_YEAR); int year1 = cal1.get(Calendar.YEAR); int year2 = cal2.get(Calendar.YEAR); if (year1 != year2) //同一年 { int timeDistance = 0; for (int i = year1; i < year2; i++) { if (i % 4 == 0 && i % 100 != 0 || i % 400 == 0) //闰年 { timeDistance += 366; } else //不是闰年 { timeDistance += 365; } } return timeDistance + (day2 - day1); } else { //不同年 return day2 - day1; } }
秒数(s) 转天时分秒 或 时分秒
public static String toDayHoursMinSec(Long time) { long day = TimeUnit.SECONDS.toDays(time); long hours = TimeUnit.SECONDS.toHours(time) - TimeUnit.DAYS.toHours(TimeUnit.SECONDS.toDays(time)); long minutes = TimeUnit.SECONDS.toMinutes(time) - TimeUnit.HOURS.toMinutes(TimeUnit.SECONDS.toHours(time)); long seconds = TimeUnit.SECONDS.toSeconds(time) - TimeUnit.MINUTES.toSeconds(TimeUnit.SECONDS.toMinutes(time)); if (day > 0) { return String.format("%s天%s时%s分%s秒", day, hours, minutes, seconds); } return String.format("%s时%s分%s秒", hours, minutes, seconds); }
毫秒数(ms) 转天时分秒 或 时分秒
public static String toDayHoursMinMilliSec(Long time) { long day = TimeUnit.MILLISECONDS.toDays(time); long hours = TimeUnit.MILLISECONDS.toHours(time) - TimeUnit.DAYS.toHours(TimeUnit.MILLISECONDS.toDays(time)); long minutes = TimeUnit.MILLISECONDS.toMinutes(time) - TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(time)); long seconds = TimeUnit.MILLISECONDS.toSeconds(time) - TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(time)); if (day > 0) { return String.format("%s天%s时%s分%s秒", day, hours, minutes, seconds); } return String.format("%s时%s分%s秒", hours, minutes, seconds); }
获取当前时间[精准]
与new Date(有区别)
public static Date getNowDate() { Calendar calendar = Calendar.getInstance(); calendar.set(Calendar.MILLISECOND, 0); return calendar.getTime(); }
时间字符串转换date
public static Date getStrToDate(String dateStr) throws ParseException { SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); return format.parse(dateStr); }
获取到?天后的Date类型时间
public static Date getAfterDayEnd(Date startTime, int days) { Calendar cal = Calendar.getInstance(); cal.setTime(startTime); cal.add(Calendar.DAY_OF_MONTH, days);//跟随月份走的天数<构造器中写了每个月的天数...> return cal.getTime(); }
n小时后的时间
public static Date getAfterHourEnd(Date startTime, int hours) { Calendar cal = Calendar.getInstance(); cal.setTime(startTime); cal.add(Calendar.HOUR_OF_DAY, hours);//24小时制度 return cal.getTime(); }