1. 简介
Java8提供了全新的日期处理包(java.time.*),根据Java8日期新特性封装日期时间工具类LocalDateTimeUtils。
2. 工具类方法目录
说明 | 方法名称 |
---|---|
当前时间 | LocalDateTimeUtils.now() |
Date 转 LocalDateTime | LocalDateTimeUtils.convert(new Date())); |
LocalDateTime 转 Date | LocalDateTimeUtils.convert(LocalDateTime.now())); |
今天开始时间 | LocalDateTimeUtils.todayStartTime() |
今天结束时间 | LocalDateTimeUtils.todayEndTime() |
昨天开始时间 | LocalDateTimeUtils.yesterdayStartTime() |
昨天结束时间 | LocalDateTimeUtils.yesterdayEndTime() |
最近7天开始时间 | LocalDateTimeUtils.last7DaysStartTime() |
最近7天结束时间 | LocalDateTimeUtils.last7DaysEndTime() |
最近30天开始时间 | LocalDateTimeUtils.last30DaysStartTime() |
最近30天天结束时间 | LocalDateTimeUtils.last30DaysEndTime() |
最近一年开始时间 | LocalDateTimeUtils.last1YearStartTime() |
最近一年结束时间 | LocalDateTimeUtils.last1YearEndTime() |
本周开始时间 | LocalDateTimeUtils.weekStartTime() |
本周结束时间 | LocalDateTimeUtils.weekEndTime() |
本月开始时间 | LocalDateTimeUtils.monthStartTime() |
本月结束时间 | LocalDateTimeUtils.monthEndTime() |
本季度开始时间 | LocalDateTimeUtils.quarterStartTime() |
本季度结束时间 | LocalDateTimeUtils.quarterEndTime() |
本半年开始时间 | LocalDateTimeUtils.halfYearStartTime() |
本半年结束时间 | LocalDateTimeUtils.halfYearEndTime() |
本年开始时间 | LocalDateTimeUtils.yearStartTime() |
本年结束时间 | LocalDateTimeUtils.yearEndTime() |
上周开始时间 | LocalDateTimeUtils.lastWeekStartTime() |
上周结束时间 | LocalDateTimeUtils.lastWeekEndTime() |
上月开始时间 | LocalDateTimeUtils.lastMonthStartTime() |
上月结束时间 | LocalDateTimeUtils.lastMonthEndTime() |
上季度开始时间 | LocalDateTimeUtils.lastQuarterStartTime() |
上季度结束时间 | LocalDateTimeUtils.lastQuarterEndTime() |
上半年开始时间 | LocalDateTimeUtils.lastHalfYearStartTime() |
上半年结束时间 | LocalDateTimeUtils.lastHalfYearEndTime() |
上一年开始时间 | LocalDateTimeUtils.lastYearStartTime() |
上一年结束时间 | LocalDateTimeUtils.lastYearEndTime() |
下周开始时间 | LocalDateTimeUtils.nextWeekStartTime() |
下周结束时间 | LocalDateTimeUtils.nextWeekEndTime() |
下月开始时间 | LocalDateTimeUtils.nextMonthStartTime() |
下月结束时间 | LocalDateTimeUtils.nextMonthEndTime() |
下季度开始时间 | LocalDateTimeUtils.nextQuarterStartTime() |
下季度结束时间 | LocalDateTimeUtils.nextQuarterEndTime() |
下半年开始时间 | LocalDateTimeUtils.nextHalfYearStartTime() |
下半年结束时间 | LocalDateTimeUtils.nextHalfYearEndTime() |
下一年开始时间 | LocalDateTimeUtils.nextYearStartTime() |
下一年结束时间 | LocalDateTimeUtils.nextYearEndTime() |
4. 示例代码#
Copyimport java.time.*;
import java.time.temporal.ChronoUnit;
import java.time.temporal.TemporalAdjusters;
import java.util.Date;/*** LocalDateTime工具类** @author CL*/
public class LocalDateTimeUtils {/*** 当前时间** @return*/public static LocalDateTime now() {return LocalDateTime.now();}/*** Date 转 LocalDateTime** @return*/public static LocalDateTime convert(Date date) {return LocalDateTime.ofInstant(Instant.ofEpochMilli(date.getTime()), ZoneId.systemDefault());}/*** LocalDateTime 转 Date** @return*/public static Date convert(LocalDateTime localDateTime) {return Date.from(localDateTime.atZone(ZoneId.systemDefault()).toInstant());}/*** 今天开始时间** @return*/public static LocalDateTime todayStartTime() {return LocalDateTime.of(LocalDate.now(), LocalTime.MIN);}/*** 今天结束时间** @return*/public static LocalDateTime todayEndTime() {return LocalDateTime.of(LocalDate.now(), LocalTime.MAX);}/*** 昨天开始时间** @return*/public static LocalDateTime yesterdayStartTime() {return LocalDateTime.of(LocalDate.now().minus(1L, ChronoUnit.DAYS), LocalTime.MIN);}/*** 昨天结束时间** @return*/public static LocalDateTime yesterdayEndTime() {return LocalDateTime.of(LocalDate.now().minus(1L, ChronoUnit.DAYS), LocalTime.MAX);}/*** 最近7天开始时间** @return*/public static LocalDateTime last7DaysStartTime() {return LocalDateTime.of(LocalDate.now().minus(6L, ChronoUnit.DAYS), LocalTime.MIN);}/*** 最近7天结束时间** @return*/public static LocalDateTime last7DaysEndTime() {return LocalDateTime.of(LocalDate.now(), LocalTime.MAX);}/*** 最近30天开始时间** @return*/public static LocalDateTime last30DaysStartTime() {return LocalDateTime.of(LocalDate.now().minus(29L, ChronoUnit.DAYS), LocalTime.MIN);}/*** 最近30天结束时间** @return*/public static LocalDateTime last30DaysEndTime() {return LocalDateTime.of(LocalDate.now(), LocalTime.MAX);}/*** 最近一年开始时间** @return*/public static LocalDateTime last1YearStartTime() {return LocalDateTime.of(LocalDate.now().minus(1L, ChronoUnit.YEARS).plus(1L, ChronoUnit.DAYS), LocalTime.MIN);}/*** 最近一年结束时间** @return*/public static LocalDateTime last1YearEndTime() {return LocalDateTime.of(LocalDate.now(), LocalTime.MAX);}/*** 本周开始时间** @return*/public static LocalDateTime weekStartTime() {LocalDate now = LocalDate.now();return LocalDateTime.of(now.minusDays(now.getDayOfWeek().getValue() - 1), LocalTime.MIN);}/*** 本周结束时间** @return*/public static LocalDateTime weekEndTime() {LocalDate now = LocalDate.now();return LocalDateTime.of(now.plusDays(7 - now.getDayOfWeek().getValue()), LocalTime.MAX);}/*** 本月开始时间** @return*/public static LocalDateTime monthStartTime() {return LocalDateTime.of(LocalDate.now().with(TemporalAdjusters.firstDayOfMonth()), LocalTime.MIN);}/*** 本月结束时间** @return*/public static LocalDateTime monthEndTime() {return LocalDateTime.of(LocalDate.now().with(TemporalAdjusters.lastDayOfMonth()), LocalTime.MAX);}/*** 本季度开始时间** @return*/public static LocalDateTime quarterStartTime() {LocalDate now = LocalDate.now();Month month = Month.of(now.getMonth().firstMonthOfQuarter().getValue());return LocalDateTime.of(LocalDate.of(now.getYear(), month, 1), LocalTime.MIN);}/*** 本季度结束时间** @return*/public static LocalDateTime quarterEndTime() {LocalDate now = LocalDate.now();Month month = Month.of(now.getMonth().firstMonthOfQuarter().getValue()).plus(2L);return LocalDateTime.of(LocalDate.of(now.getYear(), month, month.length(now.isLeapYear())), LocalTime.MAX);}/*** 本半年开始时间** @return*/public static LocalDateTime halfYearStartTime() {LocalDate now = LocalDate.now();Month month = (now.getMonthValue() > 6) ? Month.JULY : Month.JANUARY;return LocalDateTime.of(LocalDate.of(now.getYear(), month, 1), LocalTime.MIN);}/*** 本半年结束时间** @return*/public static LocalDateTime halfYearEndTime() {LocalDate now = LocalDate.now();Month month = (now.getMonthValue() > 6) ? Month.DECEMBER : Month.JUNE;return LocalDateTime.of(LocalDate.of(now.getYear(), month, month.length(now.isLeapYear())), LocalTime.MAX);}/*** 本年开始时间** @return*/public static LocalDateTime yearStartTime() {return LocalDateTime.of(LocalDate.now().with(TemporalAdjusters.firstDayOfYear()), LocalTime.MIN);}/*** 本年结束时间** @return*/public static LocalDateTime yearEndTime() {return LocalDateTime.of(LocalDate.now().with(TemporalAdjusters.lastDayOfYear()), LocalTime.MAX);}/*** 上周开始时间** @return*/public static LocalDateTime lastWeekStartTime() {LocalDate lastWeek = LocalDate.now().minus(1L, ChronoUnit.WEEKS);return LocalDateTime.of(lastWeek.minusDays(lastWeek.getDayOfWeek().getValue() - 1), LocalTime.MIN);}/*** 上周结束时间** @return*/public static LocalDateTime lastWeekEndTime() {LocalDate lastWeek = LocalDate.now().minus(1L, ChronoUnit.WEEKS);return LocalDateTime.of(lastWeek.plusDays(7 - lastWeek.getDayOfWeek().getValue()), LocalTime.MAX);}/*** 上月开始时间** @return*/public static LocalDateTime lastMonthStartTime() {return LocalDateTime.of(LocalDate.now().minus(1L, ChronoUnit.MONTHS).with(TemporalAdjusters.firstDayOfMonth()), LocalTime.MIN);}/*** 上月结束时间** @return*/public static LocalDateTime lastMonthEndTime() {return LocalDateTime.of(LocalDate.now().minus(1L, ChronoUnit.MONTHS).with(TemporalAdjusters.lastDayOfMonth()), LocalTime.MAX);}/*** 上季度开始时间** @return*/public static LocalDateTime lastQuarterStartTime() {LocalDate now = LocalDate.now();Month firstMonthOfQuarter = Month.of(now.getMonth().firstMonthOfQuarter().getValue());Month firstMonthOfLastQuarter = firstMonthOfQuarter.minus(3L);int yearOfLastQuarter = firstMonthOfQuarter.getValue() < 4 ? now.getYear() - 1 : now.getYear();return LocalDateTime.of(LocalDate.of(yearOfLastQuarter, firstMonthOfLastQuarter, 1), LocalTime.MIN);}/*** 上季度结束时间** @return*/public static LocalDateTime lastQuarterEndTime() {LocalDate now = LocalDate.now();Month firstMonthOfQuarter = Month.of(now.getMonth().firstMonthOfQuarter().getValue());Month firstMonthOfLastQuarter = firstMonthOfQuarter.minus(1L);int yearOfLastQuarter = firstMonthOfQuarter.getValue() < 4 ? now.getYear() - 1 : now.getYear();return LocalDateTime.of(LocalDate.of(yearOfLastQuarter, firstMonthOfLastQuarter, firstMonthOfLastQuarter.maxLength()), LocalTime.MAX);}/*** 上半年开始时间** @return*/public static LocalDateTime lastHalfYearStartTime() {LocalDate now = LocalDate.now();int lastHalfYear = (now.getMonthValue() > 6) ? now.getYear() : now.getYear() - 1;Month firstMonthOfLastHalfYear = (now.getMonthValue() > 6) ? Month.JANUARY : Month.JULY;return LocalDateTime.of(LocalDate.of(lastHalfYear, firstMonthOfLastHalfYear, 1), LocalTime.MIN);}/*** 上半年结束时间** @return*/public static LocalDateTime lastHalfYearEndTime() {LocalDate now = LocalDate.now();int lastHalfYear = (now.getMonthValue() > 6) ? now.getYear() : now.getYear() - 1;Month lastMonthOfLastHalfYear = (now.getMonthValue() > 6) ? Month.JUNE : Month.DECEMBER;return LocalDateTime.of(LocalDate.of(lastHalfYear, lastMonthOfLastHalfYear, lastMonthOfLastHalfYear.maxLength()), LocalTime.MAX);}/*** 上一年开始时间** @return*/public static LocalDateTime lastYearStartTime() {return LocalDateTime.of(LocalDate.now().minus(1L, ChronoUnit.YEARS).with(TemporalAdjusters.firstDayOfYear()), LocalTime.MIN);}/*** 上一年结束时间** @return*/public static LocalDateTime lastYearEndTime() {return LocalDateTime.of(LocalDate.now().minus(1L, ChronoUnit.YEARS).with(TemporalAdjusters.lastDayOfYear()), LocalTime.MAX);}/*** 下周开始时间** @return*/public static LocalDateTime nextWeekStartTime() {LocalDate nextWeek = LocalDate.now().plus(1L, ChronoUnit.WEEKS);return LocalDateTime.of(nextWeek.minusDays(nextWeek.getDayOfWeek().getValue() - 1), LocalTime.MIN);}/*** 下周结束时间** @return*/public static LocalDateTime nextWeekEndTime() {LocalDate nextWeek = LocalDate.now().plus(1L, ChronoUnit.WEEKS);return LocalDateTime.of(nextWeek.plusDays(7 - nextWeek.getDayOfWeek().getValue()), LocalTime.MAX);}/*** 下月开始时间** @return*/public static LocalDateTime nextMonthStartTime() {return LocalDateTime.of(LocalDate.now().plus(1L, ChronoUnit.MONTHS).with(TemporalAdjusters.firstDayOfMonth()), LocalTime.MIN);}/*** 下月结束时间** @return*/public static LocalDateTime nextMonthEndTime() {return LocalDateTime.of(LocalDate.now().plus(1L, ChronoUnit.MONTHS).with(TemporalAdjusters.lastDayOfMonth()), LocalTime.MAX);}/*** 下季度开始时间** @return*/public static LocalDateTime nextQuarterStartTime() {LocalDate now = LocalDate.now();Month firstMonthOfQuarter = Month.of(now.getMonth().firstMonthOfQuarter().getValue());Month firstMonthOfNextQuarter = firstMonthOfQuarter.plus(3L);int yearOfNextQuarter = firstMonthOfQuarter.getValue() > 9 ? now.getYear() + 1 : now.getYear();return LocalDateTime.of(LocalDate.of(yearOfNextQuarter, firstMonthOfNextQuarter, 1), LocalTime.MIN);}/*** 下季度结束时间** @return*/public static LocalDateTime nextQuarterEndTime() {LocalDate now = LocalDate.now();Month firstMonthOfQuarter = Month.of(now.getMonth().firstMonthOfQuarter().getValue());Month firstMonthOfNextQuarter = firstMonthOfQuarter.plus(5L);int yearOfNextQuarter = firstMonthOfQuarter.getValue() > 9 ? now.getYear() + 1 : now.getYear();return LocalDateTime.of(LocalDate.of(yearOfNextQuarter, firstMonthOfNextQuarter, firstMonthOfNextQuarter.maxLength()), LocalTime.MAX);}/*** 上半年开始时间** @return*/public static LocalDateTime nextHalfYearStartTime() {LocalDate now = LocalDate.now();int nextHalfYear = (now.getMonthValue() > 6) ? now.getYear() + 1 : now.getYear();Month firstMonthOfNextHalfYear = (now.getMonthValue() > 6) ? Month.JANUARY : Month.JULY;return LocalDateTime.of(LocalDate.of(nextHalfYear, firstMonthOfNextHalfYear, 1), LocalTime.MIN);}/*** 上半年结束时间** @return*/public static LocalDateTime nextHalfYearEndTime() {LocalDate now = LocalDate.now();int lastHalfYear = (now.getMonthValue() > 6) ? now.getYear() + 1 : now.getYear();Month lastMonthOfNextHalfYear = (now.getMonthValue() > 6) ? Month.JUNE : Month.DECEMBER;return LocalDateTime.of(LocalDate.of(lastHalfYear, lastMonthOfNextHalfYear, lastMonthOfNextHalfYear.maxLength()), LocalTime.MAX);}/*** 下一年开始时间** @return*/public static LocalDateTime nextYearStartTime() {return LocalDateTime.of(LocalDate.now().plus(1L, ChronoUnit.YEARS).with(TemporalAdjusters.firstDayOfYear()), LocalTime.MIN);}/*** 下一年结束时间** @return*/public static LocalDateTime nextYearEndTime() {return LocalDateTime.of(LocalDate.now().plus(1L, ChronoUnit.YEARS).with(TemporalAdjusters.lastDayOfYear()), LocalTime.MAX);}public static void main(String[] args) {System.out.println("当前时间:" + now());System.out.println("Date 转 LocalDateTime:" + convert(new Date()));System.out.println("LocalDateTime 转 Date:" + convert(LocalDateTime.now()));System.out.println("今天开始时间:" + todayStartTime());System.out.println("今天结束时间:" + todayEndTime());System.out.println("昨天开始时间:" + yesterdayStartTime());System.out.println("昨天结束时间:" + yesterdayEndTime());System.out.println("最近7天开始时间:" + last7DaysStartTime());System.out.println("最近7天结束时间:" + last7DaysEndTime());System.out.println("最近30天开始时间:" + last30DaysStartTime());System.out.println("最近30天天结束时间:" + last30DaysEndTime());System.out.println("最近一年开始时间:" + last1YearStartTime());System.out.println("最近一年结束时间:" + last1YearEndTime());System.out.println("本周开始时间:" + weekStartTime());System.out.println("本周结束时间:" + weekEndTime());System.out.println("本月开始时间:" + monthStartTime());System.out.println("本月结束时间:" + monthEndTime());System.out.println("本季度开始时间:" + quarterStartTime());System.out.println("本季度结束时间:" + quarterEndTime());System.out.println("本半年开始时间:" + halfYearStartTime());System.out.println("本半年结束时间:" + halfYearEndTime());System.out.println("本年开始时间:" + yearStartTime());System.out.println("本年结束时间:" + yearEndTime());System.out.println("上周开始时间:" + lastWeekStartTime());System.out.println("上周结束时间:" + lastWeekEndTime());System.out.println("上月开始时间:" + lastMonthStartTime());System.out.println("上月结束时间:" + lastMonthEndTime());System.out.println("上季度开始时间:" + lastQuarterStartTime());System.out.println("上季度结束时间:" + lastQuarterEndTime());System.out.println("上半年开始时间:" + lastHalfYearStartTime());System.out.println("上半年结束时间:" + lastHalfYearEndTime());System.out.println("上一年开始时间:" + lastYearStartTime());System.out.println("上一年结束时间:" + lastYearEndTime());System.out.println("下周开始时间:" + nextWeekStartTime());System.out.println("下周结束时间:" + nextWeekEndTime());System.out.println("下月开始时间:" + nextMonthStartTime());System.out.println("下月结束时间:" + nextMonthEndTime());System.out.println("下季度开始时间:" + nextQuarterStartTime());System.out.println("下季度结束时间:" + nextQuarterEndTime());System.out.println("下半年开始时间:" + nextHalfYearStartTime());System.out.println("下半年结束时间:" + nextHalfYearEndTime());System.out.println("下一年开始时间:" + nextYearStartTime());System.out.println("下一年结束时间:" + nextYearEndTime());}}
LocalDate,LocalDateTime获取每周,每月,每年的第一天和最后一天,获取一周七天的日期,获取每月的所有日期
最近再弄日历相关的东西,然后就在获取每月所有日期,每周所有日期,每周,每月,每年的第一天和最后一天等,工具类没有这些方法,就写下来记录一下:
/*** 一周的第一天** @param localDate 当地日期* @return {@link LocalDate}*/public static LocalDate firstDayOfWeek(LocalDate localDate){return localDate.with(DayOfWeek.MONDAY);}/*** 一周的最后一天** @param localDate 当地日期* @return {@link LocalDate}*/public static LocalDate lastDayOfWeek(LocalDate localDate){return localDate.with(DayOfWeek.SUNDAY);}/*** 月的第一天** @param localDate 当地日期* @return {@link LocalDate}*/public static LocalDate firstDayOfMonth(LocalDate localDate){return localDate.with(TemporalAdjusters.firstDayOfMonth());}/*** 月的最后一天** @param localDate 当地日期* @return {@link LocalDate}*/public static LocalDate lastDayOfMonth(LocalDate localDate){return localDate.with(TemporalAdjusters.lastDayOfMonth());}/*** 每年的第一天** @param localDate 当地日期* @return {@link LocalDate}*/public static LocalDate firstDayOfYear(LocalDate localDate){return localDate.with(TemporalAdjusters.firstDayOfYear());}/*** 每年的最后一天** @param localDate 当地日期* @return {@link LocalDate}*/public static LocalDate lastDayOfYear(LocalDate localDate){return localDate.with(TemporalAdjusters.lastDayOfYear());}/*** 每周的所有日期 即周一到周日** @param localDate 当地日期* @return {@link List<LocalDate>}*/public static List<LocalDate> allDaysOfWeek(LocalDate localDate){List<LocalDate> allDays=new ArrayList<>();allDays.add(localDate.with(DayOfWeek.MONDAY));allDays.add(localDate.with(DayOfWeek.TUESDAY));allDays.add(localDate.with(DayOfWeek.WEDNESDAY));allDays.add(localDate.with(DayOfWeek.THURSDAY));allDays.add(localDate.with(DayOfWeek.FRIDAY));allDays.add(localDate.with(DayOfWeek.SATURDAY));allDays.add(localDate.with(DayOfWeek.SUNDAY));return allDays;}/*** 每月的所有日期 即1日到31日** @param localDate 当地日期* @return {@link List<LocalDate>}*/public static List<LocalDate> allDaysOfMonth(LocalDate localDate){List<LocalDate> allDays=new ArrayList<>();LocalDate firstDayOfMonth = firstDayOfMonth(localDate);LocalDate lastDayOfMonth = lastDayOfMonth(localDate);allDays.add(firstDayOfMonth);int i = 1;LocalDate temp = firstDayOfMonth;while (!temp.isEqual(lastDayOfMonth)){LocalDate day = firstDayOfMonth.plusDays(i);allDays.add(day);temp=day;i++;}return allDays;}
如何获取农历日期,生肖,传统节日
hutool工具包有相关的现成的工具包可以使用!!!!
LocalDateTime获取当前月的第一天和最后一天
DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");LocalDateTime now = LocalDateTime.now();LocalDateTime firstday = now.with(TemporalAdjusters.firstDayOfMonth()).withHour(0).withMinute(0).withSecond(0);LocalDateTime lastDay = now.with(TemporalAdjusters.lastDayOfMonth()).withHour(23).withMinute(59).withSecond(59);