Java日期Date和LocalDateTime的工具类

2024-05-24 04:20
文章标签 java 工具 date 日期 localdatetime

本文主要是介绍Java日期Date和LocalDateTime的工具类，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

Date

package com.qiangesoft.utils.date;import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;/*** 日期工具类** @author lq* @date 2024-05-23*/
public class DateUtil {public static final String[] CHINESE_WEEK_DAY = new String[]{"周日", "周一", "周二", "周三", "周四", "周五", "周六"};/*** 当前时间** @return*/public static Date now() {return new Date();}/*** 当日的开始时间** @return*/public static Date startOfDay() {return startOfDay(now());}/*** 某天的开始时间** @param date* @return*/public static Date startOfDay(Date date) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.set(Calendar.HOUR_OF_DAY, 0);calendar.set(Calendar.MINUTE, 0);calendar.set(Calendar.SECOND, 0);calendar.set(Calendar.MILLISECOND, 0);return calendar.getTime();}/*** 当日的结束时间** @return*/public static Date endOfDay() {return endOfDay(now());}/*** 某天的结束时间** @param date* @return*/public static Date endOfDay(Date date) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.set(Calendar.HOUR_OF_DAY, 23);calendar.set(Calendar.MINUTE, 59);calendar.set(Calendar.SECOND, 59);calendar.set(Calendar.MILLISECOND, 999);return calendar.getTime();}/*** 当日星期几** @return*/public static int dayOfWeek() {return dayOfWeek(now());}/*** 获取星期几** @param date* @return*/public static int dayOfWeek(Date date) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);return calendar.get(Calendar.DAY_OF_WEEK);}/*** 当月开始时间** @return*/public static Date startOfMonth() {return startOfMonth(now());}/*** 当月开始时间** @return*/public static Date startOfMonth(Date date) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.set(Calendar.DAY_OF_MONTH, 1);calendar.set(Calendar.HOUR_OF_DAY, 0);calendar.set(Calendar.MINUTE, 0);calendar.set(Calendar.SECOND, 0);calendar.set(Calendar.MILLISECOND, 0);return calendar.getTime();}/*** 当月结束时间** @return*/public static Date endOfMonth() {return endOfMonth(now());}/*** 当月结束时间** @return*/public static Date endOfMonth(Date date) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH));calendar.set(Calendar.HOUR_OF_DAY, 23);calendar.set(Calendar.MINUTE, 59);calendar.set(Calendar.SECOND, 59);calendar.set(Calendar.MILLISECOND, 999);return calendar.getTime();}/*** 当日是否属于时间范围内** @param startTime* @param endTime* @return*/public static Boolean between(Date startTime, Date endTime) {return between(now(), startTime, endTime);}/*** 时间范围内** @param date* @param startTime* @param endTime* @return*/public static Boolean between(Date date, Date startTime, Date endTime) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);Calendar start = Calendar.getInstance();start.setTime(startTime);Calendar end = Calendar.getInstance();end.setTime(endTime);return calendar.after(start) && calendar.before(end);}/*** 时间格式化** @param date* @param format* @return*/public static String format(Date date, String format) {SimpleDateFormat dateFormat = new SimpleDateFormat(format);return dateFormat.format(date);}/*** 增加秒** @param date* @param second* @return*/public static Date addSecond(Date date, int second) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.add(Calendar.SECOND, second);return calendar.getTime();}/*** 增加分钟** @param date* @param minute* @return*/public static Date addMinute(Date date, int minute) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.add(Calendar.MINUTE, minute);return calendar.getTime();}/*** 增加小时** @param date* @param hour* @return*/public static Date addHour(Date date, int hour) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.add(Calendar.HOUR, hour);return calendar.getTime();}/*** 增加天** @param date* @param day* @return*/public static Date addDay(Date date, int day) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.add(Calendar.DATE, day);return calendar.getTime();}/*** 增加周** @param date* @param week* @return*/public static Date addWeek(Date date, int week) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.add(Calendar.DAY_OF_WEEK, week);return calendar.getTime();}/*** 增加月** @param date* @param month* @return*/public static Date addMonth(Date date, int month) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.add(Calendar.MONTH, month);return calendar.getTime();}/*** 增加年** @param date* @param year* @return*/public static Date addYear(Date date, int year) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.add(Calendar.YEAR, year);return calendar.getTime();}/*** 减少秒** @param date* @param second* @return*/public static Date reduceSecond(Date date, int second) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.roll(Calendar.SECOND, second);return calendar.getTime();}/*** 减少分钟** @param date* @param minute* @return*/public static Date reduceMinute(Date date, int minute) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.roll(Calendar.MINUTE, minute);return calendar.getTime();}/*** 减少小时** @param date* @param hour* @return*/public static Date reduceHour(Date date, int hour) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.roll(Calendar.HOUR, hour);return calendar.getTime();}/*** 减少天** @param date* @param day* @return*/public static Date reduceDay(Date date, int day) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.roll(Calendar.DATE, day);return calendar.getTime();}/*** 减少周** @param date* @param week* @return*/public static Date reduceWeek(Date date, int week) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.roll(Calendar.DAY_OF_WEEK, week);return calendar.getTime();}/*** 减少月** @param date* @param month* @return*/public static Date reduceMonth(Date date, int month) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.roll(Calendar.MONTH, month);return calendar.getTime();}/*** 减少年** @param date* @param year* @return*/public static Date reduceYear(Date date, int year) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.roll(Calendar.YEAR, year);return calendar.getTime();}}

LocalDateTime

package com.qiangesoft.utils.date;import java.time.DayOfWeek;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.format.DateTimeFormatter;
import java.time.temporal.TemporalAdjusters;/*** 日期工具类** @author lq* @date 2024-05-23*/
public class LocalDateUtil {public static final String[] CHINESE_WEEK_DAY = new String[]{"周日", "周一", "周二", "周三", "周四", "周五", "周六"};/*** 当前时间** @return*/public static LocalDateTime now() {return LocalDateTime.now();}/*** 当日的开始时间** @return*/public static LocalDateTime startOfDay() {return now().toLocalDate().atStartOfDay();}/*** 某天的开始时间** @param date* @return*/public static LocalDateTime startOfDay(LocalDateTime date) {return date.toLocalDate().atStartOfDay();}/*** 当日的结束时间** @return*/public static LocalDateTime endOfDay() {return now().toLocalDate().atTime(LocalTime.MAX);}/*** 某天的结束时间** @param date* @return*/public static LocalDateTime endOfDay(LocalDateTime date) {return date.toLocalDate().atTime(LocalTime.MAX);}/*** 当日星期几** @return*/public static int dayOfWeek() {return dayOfWeek(now());}/*** 获取星期几** @param date* @return*/public static int dayOfWeek(LocalDateTime date) {DayOfWeek dayOfWeek = date.getDayOfWeek();return dayOfWeek.getValue();}/*** 当月开始时间** @return*/public static LocalDateTime startOfMonth() {return startOfMonth(now());}/*** 当月开始时间** @return*/public static LocalDateTime startOfMonth(LocalDateTime date) {return date.toLocalDate().withDayOfMonth(1).atStartOfDay();}/*** 当月结束时间** @return*/public static LocalDateTime endOfMonth() {return endOfMonth(now());}/*** 当月结束时间** @return*/public static LocalDateTime endOfMonth(LocalDateTime date) {return date.toLocalDate().with(TemporalAdjusters.lastDayOfMonth()).atTime(LocalTime.MAX);}/*** 当日是否属于时间范围内** @param startTime* @param endTime* @return*/public static Boolean between(LocalDateTime startTime, LocalDateTime endTime) {return between(now(), startTime, endTime);}/*** 时间范围内** @param date* @param startTime* @param endTime* @return*/public static Boolean between(LocalDateTime date, LocalDateTime startTime, LocalDateTime endTime) {return date.isAfter(startTime) && date.isBefore(endTime);}/*** 时间格式化** @param date* @param format* @return*/public static String format(LocalDateTime date, String format) {DateTimeFormatter formatter = DateTimeFormatter.ofPattern(format);return date.format(formatter);}/*** 增加秒** @param date* @param second* @return*/public static LocalDateTime addSecond(LocalDateTime date, int second) {return date.plusSeconds(second);}/*** 增加分钟** @param date* @param minute* @return*/public static LocalDateTime addMinute(LocalDateTime date, int minute) {return date.plusMinutes(minute);}/*** 增加小时** @param date* @param hour* @return*/public static LocalDateTime addHour(LocalDateTime date, int hour) {return date.plusHours(hour);}/*** 增加天** @param date* @param day* @return*/public static LocalDateTime addDay(LocalDateTime date, int day) {return date.plusDays(day);}/*** 增加周** @param date* @param week* @return*/public static LocalDateTime addWeek(LocalDateTime date, int week) {return date.plusWeeks(week);}/*** 增加月** @param date* @param month* @return*/public static LocalDateTime addMonth(LocalDateTime date, int month) {return date.plusMonths(month);}/*** 增加年** @param date* @param year* @return*/public static LocalDateTime addYear(LocalDateTime date, int year) {return date.plusYears(year);}/*** 减少秒** @param date* @param second* @return*/public static LocalDateTime reduceSecond(LocalDateTime date, int second) {return date.minusSeconds(second);}/*** 减少分钟** @param date* @param minute* @return*/public static LocalDateTime reduceMinute(LocalDateTime date, int minute) {return date.minusMinutes(minute);}/*** 减少小时** @param date* @param hour* @return*/public static LocalDateTime reduceHour(LocalDateTime date, int hour) {return date.minusHours(hour);}/*** 减少天** @param date* @param day* @return*/public static LocalDateTime reduceDay(LocalDateTime date, int day) {return date.minusDays(day);}/*** 减少周** @param date* @param week* @return*/public static LocalDateTime reduceWeek(LocalDateTime date, int week) {return date.minusWeeks(week);}/*** 减少月** @param date* @param month* @return*/public static LocalDateTime reduceMonth(LocalDateTime date, int month) {return date.minusMonths(month);}/*** 减少年** @param date* @param year* @return*/public static LocalDateTime reduceYear(LocalDateTime date, int year) {return date.minusYears(year);}}

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