221 lines
6.8 KiB
Java
221 lines
6.8 KiB
Java
package com.xkrs.utils;
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import java.time.*;
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import java.time.format.DateTimeFormatter;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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/**
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* 日期时间工具
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* @author tajochen
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*/
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public class DateTimeUtil {
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private final static String COMMON_PATTERN_DATETIME = "yyyy-MM-dd HH:mm:ss";
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private final static String COMMON_PATTERN_DATE = "yyyy-MM-dd";
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private final static DateTimeFormatter COMMON_FORMATTER_DATETIME = DateTimeFormatter.ofPattern(COMMON_PATTERN_DATETIME);
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private final static DateTimeFormatter COMMON_FORMATTER_DATE = DateTimeFormatter.ofPattern(COMMON_PATTERN_DATE);
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private final static ZoneOffset DEFAULT_ZONE_OFFSET = ZoneOffset.of("+8");
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/**
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* 字符串转LocalDate
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* @param date
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* @return
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*/
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public static LocalDate stringToDate(String date) {
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assert date != null;
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return LocalDate.parse(date, COMMON_FORMATTER_DATE);
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}
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/**
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* LocalDate转字符串
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* @param date
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* @return
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*/
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public static String dateToString(LocalDate date) {
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assert date != null;
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return COMMON_FORMATTER_DATE.format(date);
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}
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/**
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* LocalDateTime转字符串
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* @param dateTime
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* @return
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*/
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public static String dateTimeToString(LocalDateTime dateTime) {
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assert dateTime != null;
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return COMMON_FORMATTER_DATETIME.format(dateTime);
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}
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/**
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* 字符串转LocalDateTime
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* @param dateStr
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* @return
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*/
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public static LocalDateTime stringToDateTime(String dateStr) {
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assert dateStr != null;
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return LocalDateTime.parse(dateStr, COMMON_FORMATTER_DATETIME);
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}
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/**
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* 字符串转Instant时间戳
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* @param str
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* @return
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*/
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public static Instant stringToInstant(String str) {
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assert str != null;
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return stringToDateTime(str).toInstant(DEFAULT_ZONE_OFFSET);
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}
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/**
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* LocalDateTime转字符串（格式化）
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* @param dateTime
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* @param formatter
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* @return
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*/
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public static String dateToStringFormatter(LocalDateTime dateTime, DateTimeFormatter formatter) {
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assert dateTime != null;
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return formatter.format(dateTime);
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}
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/**
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* 字符串转LocalDateTime（格式化）
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* @param dateStr
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* @param formatter
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* @return
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*/
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public static LocalDateTime stringToDateTimeFormatter(String dateStr, DateTimeFormatter formatter) {
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assert dateStr != null;
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return LocalDateTime.parse(dateStr, formatter);
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}
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/**
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* 字符串转 local date
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* @param dateStr
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* @return
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*/
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public static LocalDate stringToDateFormatter(String dateStr){
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LocalDate date = LocalDate.parse(dateStr, COMMON_FORMATTER_DATE);
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return date;
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}
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/**
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* 日期转时间戳
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* @param dateTime
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* @return
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*/
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public static long dateToTimeMillis(LocalDateTime dateTime) {
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assert dateTime != null;
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return dateTime.toInstant(DEFAULT_ZONE_OFFSET).toEpochMilli();
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}
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/**
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* 时间戳转日期
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* @param timeMillis
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* @return
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*/
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public static LocalDateTime timeMillisToDate(long timeMillis) {
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Instant instant = Instant.ofEpochMilli(timeMillis);
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return LocalDateTime.ofInstant(instant, DEFAULT_ZONE_OFFSET);
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}
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/**
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* 时间戳转时间
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* @param timeMillis
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* @return
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*/
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public static LocalDateTime timeMillisToTime(long timeMillis) {
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LocalDateTime localDateTime = LocalDateTime.ofEpochSecond(timeMillis, 0, ZoneOffset.ofHours(8));
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return localDateTime;
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}
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/**
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* 时间戳转时间再转字符串
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* @param timeMillis
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* @return
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*/
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public static String timeMillisToString(long timeMillis){
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LocalDateTime localDateTime = LocalDateTime.ofEpochSecond(timeMillis, 0, ZoneOffset.ofHours(8));
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return COMMON_FORMATTER_DATETIME.format(localDateTime);
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}
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/**
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* 获取当前时间 hh:mm:ss:nnn
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* @return
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*/
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public static LocalDateTime getNowTime() {
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LocalDateTime now = LocalDateTime.now();
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return now;
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}
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/**
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* 获取当前日期 yyyy-MM-dd
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* @return
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*/
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public static LocalDate getToday() {
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LocalDate now = LocalDate.now();
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return now;
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}
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/**
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* 获取当前 Instant 时间戳
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* @return
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*/
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public static Instant getInstant() {
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Instant timeStamp = Instant.now();
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return timeStamp;
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}
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/**
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* 判断日期格式是否合法 "yyyy-MM-dd"
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* @param strDate
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* @return
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*/
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public static boolean isValidDate(String strDate) {
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final int minLen = 10;
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if(strDate == null || strDate.length() < minLen) {
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return false;
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}
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//正则表达式校验日期格式 yyyy-MM-dd
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String eL = "(([0-9]{3}[1-9]|[0-9]{2}[1-9][0-9]{1}|[0-9]{1}[1-9][0-9]{2}|[1-9][0-9]{3})-(((0[13578]|1[02])-" +
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"(0[1-9]|[12][0-9]|3[01]))|((0[469]|11)-(0[1-9]|[12][0-9]|30))|(02-(0[1-9]|[1][0-9]|2[0-8]))))|((([0-9]{2})" +
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"(0[48]|[2468][048]|[13579][26])|((0[48]|[2468][048]|[3579][26])00))-02-29)(([0-9]{3}[1-9]|[0-9]{2}[1-9]" +
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"[0-9]{1}|[0-9]{1}[1-9][0-9]{2}|[1-9][0-9]{3})-(((0[13578]|1[02])-(0[1-9]|[12][0-9]|3[01]))|((0[469]|11)-" +
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"(0[1-9]|[12][0-9]|30))|(02-(0[1-9]|[1][0-9]|2[0-8]))))|((([0-9]{2})(0[48]|[2468][048]|[13579][26])|" +
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"((0[48]|[2468][048]|[3579][26])00))-02-29)";
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Pattern pat = Pattern.compile(eL);
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Matcher matcher = pat.matcher(strDate);
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return matcher.matches();
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}
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/**
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* 判断时间格式 格式必须为 "YYYY-MM-DD HH:mm:ss"
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* @param sDateTime
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* @return
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*/
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public static boolean isValidDateTime(String sDateTime) {
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final int minLen = 19;
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if ((sDateTime == null) || (sDateTime.length() < minLen)) {
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return false;
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}
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String eL = "(((01[0-9]{2}|0[2-9][0-9]{2}|[1-9][0-9]{3})-(0?[13578]|1[02])-" +
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"(0?[1-9]|[12]\\\\d|3[01]))|((01[0-9]{2}|0[2-9][0-9]{2}|[1-9][0-9]{3})-" +
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"(0?[13456789]|1[012])-(0?[1-9]|[12]\\\\d|30))|((01[0-9]{2}|0[2-9][0-9]{2}|[1-9][0-9]{3})-0?2-" +
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"(0?[1-9]|1\\\\d|2[0-8]))|(((1[6-9]|[2-9]\\\\d)(0[48]|[2468][048]|[13579][26])|((04|08|12|16|[2468][048]|" +
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"[3579][26])00))-0?2-29)) (20|21|22|23|[0-1]?\\\\d):[0-5]?\\\\d:[0-5]?\\\\d";
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Pattern pat = Pattern.compile(eL);
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Matcher matcher = pat.matcher(sDateTime);
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return matcher.matches();
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}
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public static void main(String[] args) {
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LocalDateTime overTime = DateTimeUtil.stringToDateTime("2021-08-15 00:00:00");
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// 计算距离结束时间的天数作为token
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Duration duration = Duration.between(LocalDateTime.now(), overTime);
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long l = duration.toDays();
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System.out.println(l);
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}
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}
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