package com.dsh.account.util;
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import java.text.ParseException;
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import java.time.DayOfWeek;
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import java.time.Duration;
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import java.time.LocalDate;
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import java.time.LocalDateTime;
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import java.time.format.DateTimeFormatter;
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/**
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* LocalDateTimeUtils
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* LocalDateTime 时间工具
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*
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* @author yudeshan
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* @version V1.0
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*/
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public class LocalDateTimeUtils {
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private final static int[] dayArr = new int[]{20, 19, 21, 20, 21, 22, 23, 23, 23, 24, 23, 22};
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private final static String[] constellationArr = new String[]{"摩羯座", "水瓶座", "双鱼座", "白羊座", "金牛座", "双子座", "巨蟹座", "狮子座", "处女座", "天秤座", "天蝎座", "射手座", "摩羯座"};
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/**
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* 取两个时间相差毫秒数
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*
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* @param start 开始时间
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* @param end 结束时间
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* @return
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*/
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public static long betweenMillis(LocalDateTime start, LocalDateTime end) {
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Duration duration = Duration.between(start, end);
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return duration.toMillis();
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}
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/**
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* 通过生日计算年龄
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*
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* @param birthDay 生日
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* @return
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* @throws ParseException
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*/
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public static int getAgeByBirth(LocalDate birthDay) throws ParseException {
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int age = 0;
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//出生日期晚于当前时间，无法计算
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LocalDate now = LocalDate.now();
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if (birthDay.isAfter(now)) {
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throw new IllegalArgumentException("生日大于当前时间!");
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}
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//当前年份
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int yearNow = now.getYear();
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//当前月份
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int monthNow = now.getMonthValue();
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//当前日期
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int dayOfMonthNow = now.getDayOfMonth();
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int yearBirth = birthDay.getYear();
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int monthBirth = birthDay.getMonthValue();
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int dayOfMonthBirth = birthDay.getDayOfMonth();
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//计算整岁数
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age = yearNow - yearBirth;
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if (monthNow <= monthBirth) {
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if (monthNow == monthBirth) {
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if (dayOfMonthNow < dayOfMonthBirth) {
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//当前日期在生日之前，年龄减一
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age--;
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}
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} else {
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//当前月份在生日之前，年龄减一
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age--;
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}
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}
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return age;
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}
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/**
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* 根据月份计算星座
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*/
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public static String getConstellation(LocalDate date) {
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Integer month = date.getMonthValue();
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Integer day = date.getDayOfMonth();
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return day < dayArr[month - 1] ? constellationArr[month - 1] : constellationArr[month];
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}
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/**
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* 获取当天的星期几
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*
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* @return
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*/
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public static int getWeekStr() {
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LocalDate today = LocalDate.now();
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DayOfWeek dayOfWeek = today.getDayOfWeek();
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return dayOfWeek.getValue();
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}
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public static String getWeekOfDays(int desiredDayOfWeek) {
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// 获取当前日期
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LocalDate currentDate = LocalDate.now();
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// 获取当前周的第一天（默认以星期一为一周的开始）
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LocalDate firstDayOfWeek = currentDate.with(DayOfWeek.MONDAY);
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LocalDate desiredDate = firstDayOfWeek.plusDays(desiredDayOfWeek - 1);
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DateTimeFormatter formatter = DateTimeFormatter.ofPattern("MM.dd");
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return desiredDate.format(formatter);
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}
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//
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// public static void main(String[] args) {
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// String weekOfDays = LocalDateTimeUtils.getWeekOfDays(4);
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// System.out.println(weekOfDays);
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// }
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}
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