Java8 LocalDate/Time/DateTime最全工具类

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概述

LocalDate、LocalTime、LocalDateTime的使用请参考：
https://blog.csdn.net/Saintmm/article/details/120193455

代码

废话不多说，直接上代码。

package com.saint.base.util;import org.slf4j.Logger;
import org.slf4j.LoggerFactory;import java.time.*;
import java.time.format.DateTimeFormatter;
import java.time.temporal.ChronoUnit;
import java.util.Date;/*** 本地日期和时间格式化工具** @author Saint* @version 1.0* @createTime 2021-01-08 7:00*/
public class LocalDateUtil {private static final Logger LOGGER = LoggerFactory.getLogger(LocalDateUtil.class);/*** String类型转LocalDateTime类型** @param date    日期字符串* @param pattern 日期格式* @return LocalDateTime类型*/public static LocalDateTime stringToLocalDateTime(String date, String pattern) {if (pattern == null || "".equals(pattern)) {return LocalDateTime.of(1900, 1, 1, 0, 0, 0);}DateTimeFormatter formatter = DateTimeFormatter.ofPattern(pattern);return LocalDateTime.parse(date, formatter);}/*** String类型转LocalDate类型** @param date    日期字符串* @param pattern 日期格式* @return LocalDate类型*/public static LocalDate stringToLocalDate(String date, String pattern) {if (pattern == null || "".equals(pattern)) {return LocalDate.of(1900, 1, 1);}DateTimeFormatter formatter = DateTimeFormatter.ofPattern(pattern);return LocalDate.parse(date, formatter);}/*** String类型转LocalTime类型** @param date    时间字符串* @param pattern 时间格式* @return LocalTime类型*/public static LocalTime stringToLocalTime(String date, String pattern) {if (pattern == null || "".equals(pattern)) {return LocalTime.of(0, 0, 0);}DateTimeFormatter formatter = DateTimeFormatter.ofPattern(pattern);return LocalTime.parse(date, formatter);}/*** LocalDateTime类型转String类型** @param localDateTime localDateTime类型日期* @param pattern       字符串格式* @return String类型*/public static String localDateTimeToString(LocalDateTime localDateTime, String pattern) {if (pattern == null || "".equals(pattern)) {return "1900-01-01T00:00:00.000";}DateTimeFormatter formatter = DateTimeFormatter.ofPattern(pattern);return localDateTime.format(formatter);}/*** LocalDate类型转String类型** @param localDate localDate类型日期* @param pattern   字符串格式* @return String类型*/public static String localDateToString(LocalDate localDate, String pattern) {if (pattern == null || "".equals(pattern)) {return "1900-01-01";}DateTimeFormatter formatter = DateTimeFormatter.ofPattern(pattern);return localDate.format(formatter);}/*** Date类型转LocalDateTime类型** @param date Date类型日期* @return LocalDateTime类型*/public static LocalDateTime dateToLocalDateTime(Date date) {if (date == null) {return LocalDateTime.of(1900, 1, 1, 0, 0, 0);}Instant instant = date.toInstant();// 获取本地时区ZoneId zoneId = ZoneId.systemDefault();return LocalDateTime.ofInstant(instant, zoneId);}/*** Date类型转LocalDate类型** @param date Date类型日期* @return LocalDate类型*/public static LocalDate dateToLocalDate(Date date) {if (date == null) {return LocalDate.of(1900, 1, 1);}LocalDateTime localDateTime = dateToLocalDateTime(date);return localDateTime.toLocalDate();}/*** Date类型转LocalTime类型** @param date Date类型日期* @return LocalTime类型*/public static LocalTime dateToLocalTime(Date date) {if (date == null) {return LocalTime.of(0, 0, 0);}LocalDateTime localDateTime = dateToLocalDateTime(date);return localDateTime.toLocalTime();}/*** LocalDateTime类型转Date类型** @param localDateTime LocalDateTime类型时间* @return Date类型*/public static Date localDateTimeToDate(LocalDateTime localDateTime) {if (localDateTime == null) {localDateTime = LocalDateTime.of(1900, 1, 1, 0, 0, 0);}ZoneId zoneId = ZoneId.systemDefault();Instant instant = localDateTime.atZone(zoneId).toInstant();return Date.from(instant);}/*** LocalDate类型转Date类型** @param localDate LocalDate类型日期* @return Date类型*/public static Date localDateToDate(LocalDate localDate) {if (localDate == null) {localDate = LocalDate.of(1900, 1, 1);}ZoneId zoneId = ZoneId.systemDefault();Instant instant = localDate.atStartOfDay().atZone(zoneId).toInstant();return Date.from(instant);}/*** LocalTime类型 + LocalDate类型 转Date类型** @param localDate LocalDate类型日期* @param localTime LocalTime类型时间* @return Date类型*/public static Date localTimeToDate(LocalDate localDate, LocalTime localTime) {if (localTime == null) {return localDateToDate(localDate);}LocalDateTime localDateTime = LocalDateTime.of(localDate, localTime);return localDateTimeToDate(localDateTime);}public static LocalDateTime addMonth(LocalDateTime time, int interval) {return time.plus(interval, ChronoUnit.MONTHS);}public static LocalDateTime addDay(LocalDateTime time, int interval) {return time.plus(interval, ChronoUnit.DAYS);}public static LocalDateTime addHour(LocalDateTime time, int interval) {return time.plus(interval, ChronoUnit.HOURS);}public static LocalDateTime addMinute(LocalDateTime time, int interval) {return time.plus(interval, ChronoUnit.MINUTES);}public static LocalDateTime addSecond(LocalDateTime time, int interval) {return time.plus(interval, ChronoUnit.SECONDS);}/*** 获取两个时间的时间间隔，time2-time1** @param time1* @param time2*/public static long getIntervalMillisecond(LocalDateTime time1, LocalDateTime time2) {return Duration.between(time1, time2).toMillis();}}

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