根据日期获取农历节日

package com.watsons.onstore.user.api.utils;import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;/*** 获取输入公历日期的生肖、天干地支、农历年、农历月、农历日、公历节日、农历节日、24节气等数据** @author huangJunHao* @date 2022/4/12*/
public class LunarCalendarFestivalUtils {//生肖年private String animal;//干支年private String ganZhiYear;//阴历年private String lunarYear;//阴历月private String lunarMonth;//阴历日private String lunarDay;//阳历节日private String solarFestival;//阴历节日private String lunarFestival;//节气private String lunarTerm;/***   获取查询日期的年份生肖* @return*/public String getAnimal() {return animal;}/***   获取查询日期年份的天干地支* @return*/public String getGanZhiYear() {return ganZhiYear;}/***   获取查询日期的农历年份* @return*/public String getLunarYear() {return lunarYear;}/***   获取查询日期的农历月份* @return*/public String getLunarMonth() {return lunarMonth;}/***   获取查询日期的农历日* @return*/public String getLunarDay() {return lunarDay;}/***  获取查询日期的公历节日（不是节日返回空）* @return*/public String getSolarFestival() {return solarFestival;}/***  获取查询日期的农历节日（不是节日返回空）* @return*/public String getLunarFestival() {return lunarFestival;}/***   获取查询日期的节气数据（不是节气返回空）* @return*/public String getLunarTerm() {return lunarTerm;}final static long[] lunarInfo = new long[] {0x04bd8, 0x04ae0, 0x0a570, 0x054d5, 0x0d260, 0x0d950, 0x16554, 0x056a0, 0x09ad0, 0x055d2,0x04ae0, 0x0a5b6, 0x0a4d0, 0x0d250, 0x1d255, 0x0b540, 0x0d6a0, 0x0ada2, 0x095b0, 0x14977,0x04970, 0x0a4b0, 0x0b4b5, 0x06a50, 0x06d40, 0x1ab54, 0x02b60, 0x09570, 0x052f2, 0x04970,0x06566, 0x0d4a0, 0x0ea50, 0x06e95, 0x05ad0, 0x02b60, 0x186e3, 0x092e0, 0x1c8d7, 0x0c950,0x0d4a0, 0x1d8a6, 0x0b550, 0x056a0, 0x1a5b4, 0x025d0, 0x092d0, 0x0d2b2, 0x0a950, 0x0b557,0x06ca0, 0x0b550, 0x15355, 0x04da0, 0x0a5d0, 0x14573, 0x052d0, 0x0a9a8, 0x0e950, 0x06aa0,0x0aea6, 0x0ab50, 0x04b60, 0x0aae4, 0x0a570, 0x05260, 0x0f263, 0x0d950, 0x05b57, 0x056a0,0x096d0, 0x04dd5, 0x04ad0, 0x0a4d0, 0x0d4d4, 0x0d250, 0x0d558, 0x0b540, 0x0b5a0, 0x195a6,0x095b0, 0x049b0, 0x0a974, 0x0a4b0, 0x0b27a, 0x06a50, 0x06d40, 0x0af46, 0x0ab60, 0x09570,0x04af5, 0x04970, 0x064b0, 0x074a3, 0x0ea50, 0x06b58, 0x055c0, 0x0ab60, 0x096d5, 0x092e0,0x0c960, 0x0d954, 0x0d4a0, 0x0da50, 0x07552, 0x056a0, 0x0abb7, 0x025d0, 0x092d0, 0x0cab5,0x0a950, 0x0b4a0, 0x0baa4, 0x0ad50, 0x055d9, 0x04ba0, 0x0a5b0, 0x15176, 0x052b0, 0x0a930,0x07954, 0x06aa0, 0x0ad50, 0x05b52, 0x04b60, 0x0a6e6, 0x0a4e0, 0x0d260, 0x0ea65, 0x0d530,0x05aa0, 0x076a3, 0x096d0, 0x04bd7, 0x04ad0, 0x0a4d0, 0x1d0b6, 0x0d250, 0x0d520, 0x0dd45,0x0b5a0, 0x056d0, 0x055b2, 0x049b0, 0x0a577, 0x0a4b0, 0x0aa50, 0x1b255, 0x06d20, 0x0ada0};//阳历天数final static  int[] solarMonths = new int[]{31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};//生肖final static  String[] animals = new String[]{"鼠", "牛", "虎", "兔", "龙", "蛇", "马", "羊", "猴", "鸡", "狗", "猪"};//天干final static String[] tGan = new String[] { "甲", "乙", "丙", "丁", "戊", "己", "庚", "辛", "壬", "癸" };//地支final static String[] dZhi = new String[] { "子", "丑", "寅", "卯", "辰", "巳", "午", "未", "申", "酉", "戌", "亥" };//二十四节气final static  String[] solarTerms = new String[]{"小寒", "大寒", "立春", "雨水", "惊蛰", "春分", "清明", "谷雨", "立夏","小满", "芒种", "夏至", "小暑", "大暑", "立秋", "处暑", "白露", "秋分", "寒露", "霜降", "立冬", "小雪", "大雪", "冬至"};//二十四节气日期偏移度private static final  double D = 0.2422;//特殊年份节气日期偏移private final static Map<Integer,Integer[]> INCREASE_OFFSETMAP = new HashMap<Integer, Integer[]>();//+1偏移private final static Map<Integer,Integer[]> DECREASE_OFFSETMAP = new HashMap<Integer, Integer[]>();//-1偏移static {INCREASE_OFFSETMAP.put(0, new Integer[]{1982});//小寒DECREASE_OFFSETMAP.put(0, new Integer[]{2019});//小寒INCREASE_OFFSETMAP.put(1, new Integer[]{2082});//大寒DECREASE_OFFSETMAP.put(3, new Integer[]{2026});//雨水INCREASE_OFFSETMAP.put(5, new Integer[]{2084});//春分INCREASE_OFFSETMAP.put(9, new Integer[]{2008});//小满INCREASE_OFFSETMAP.put(10, new Integer[]{1902});//芒种INCREASE_OFFSETMAP.put(11, new Integer[]{1928});//夏至INCREASE_OFFSETMAP.put(12, new Integer[]{1925,2016});//小暑INCREASE_OFFSETMAP.put(13, new Integer[]{1922});//大暑INCREASE_OFFSETMAP.put(14, new Integer[]{2002});//立秋INCREASE_OFFSETMAP.put(16, new Integer[]{1927});//白露INCREASE_OFFSETMAP.put(17, new Integer[]{1942});//秋分INCREASE_OFFSETMAP.put(19, new Integer[]{2089});//霜降INCREASE_OFFSETMAP.put(20, new Integer[]{2089});//立冬INCREASE_OFFSETMAP.put(21, new Integer[]{1978});//小雪INCREASE_OFFSETMAP.put(22, new Integer[]{1954});//大雪DECREASE_OFFSETMAP.put(23, new Integer[]{1918,2021});//冬至}//定义一个二维数组，第一维数组存储的是20世纪的节气C值，第二维数组存储的是21世纪的节气C值,0到23个，依次代表立春、雨水...大寒节气的C值private static final double[][] CENTURY_ARRAY = {{6.11,20.84,4.6295,19.4599,6.3826,21.4155,5.59,20.888,6.318,21.86,6.5,22.2,7.928,23.65,8.35,23.95,8.44,23.822,9.098,24.218,8.218,23.08,7.9,22.6},{5.4055,20.12,3.87,18.73,5.63,20.646,4.81,20.1,5.52,21.04,5.678,21.37,7.108,22.83,7.5,23.13,7.646,23.042,8.318,23.438,7.438,22.36,7.18,21.94}};//农历月份final static String lunarNumber[] = { "一", "二", "三", "四", "五", "六", "七", "八", "九", "十", "十一", "十二" };//农历年final static  String[] lunarYears = new String[]{"零", "一", "二", "三", "四", "五", "六", "七", "八", "九"};final static  String[] chineseTen = new String[]{"初", "十", "廿", "三"};//农历节日final static String[] lunarHoliday = new String[] {"0101 春节", "0115 元宵节", "0202 龙头节", "0505 端午节", "0707 七夕节", "0715 中元节","0815 中秋节", "0909 重阳节", "1001 寒衣节", "1015 下元节", "1208 腊八节", "1223 小年" };//公立节日final static String[] solarHoliday = new String[] { "0101 元旦", "0214 情人节", "0308 妇女节", "0312 植树节", "0315 消费者权益日","0401 愚人节", "0422 地球日", "0423 读书日", "0501 劳动节", "0504 青年节", "0512 护士节", "0518 博物馆日", "0519 旅游日", "0601 儿童节","0701 建党节", "0801 建军节", "0910 教师节","1001 国庆节", "1024 联合国日", "1204 宪法日", "1224 平安夜", "1225 圣诞节"};//格式化日期static SimpleDateFormat chineseDateFormat = new SimpleDateFormat("yyyy年MM月dd日", Locale.CHINA);static SimpleDateFormat solarDateFormat = new SimpleDateFormat("yyyy-MM-dd");/***   返回农历y年的总天数* @param y* @return*/private int lunarYearDays(int y) {int i, sum = 348;for (i = 0x8000; i > 0x8; i >>= 1) {sum += ((lunarInfo[y - 1900] & i) != 0 ? 1 : 0);}return (sum + leapDays(y));}/***  返回农历y年闰月的天数*/private int leapDays(int y) {if (leapMonth(y) != 0) {return ((lunarInfo[y - 1900] & 0x10000) != 0 ? 30 : 29 );} elsereturn 0;}/***  判断y年的农历中那个月是闰月,不是闰月返回0* @param y* @return*/private int leapMonth(int y) {return  (int) (lunarInfo[y - 1900] & 0xf);}/***  返回农历y年m月的总天数* @param y* @param m* @return*/private int monthDays(int y, int m) {return ((lunarInfo[y - 1900] & (0x10000 >> m))!=0 ? 30 : 29);}/***  获取阴历年* @param year* @return*/private String getLunarYearString(String year) {int y1 = Integer.parseInt(year.charAt(0)+"");int y2 = Integer.parseInt(year.charAt(1)+"");int y3 = Integer.parseInt(year.charAt(2)+"");int y4 = Integer.parseInt(year.charAt(3)+"");return lunarYears[y1]+lunarYears[y2]+lunarYears[y3]+lunarYears[y4];}/***   获取阴历日*/private String getLunarDayString(int day) {int n = day % 10 == 0 ? 9 : day % 10 - 1;if (day > 30)return "";if (day == 10)return "初十";elsereturn chineseTen[day / 10] + lunarNumber[n];}/***  特例,特殊的年分的节气偏移量,由于公式并不完善，所以算出的个别节气的第几天数并不准确，在此返回其偏移量* @param year 年份* @param n 节气编号* @return 返回其偏移量*/private int specialYearOffset(int year,int n) {int offset = 0;offset += getOffset(DECREASE_OFFSETMAP,year,n,-1);offset += getOffset(INCREASE_OFFSETMAP,year,n,1);return offset;}/***  节气偏移量计算* @param map* @param year* @param n* @param offset* @return*/private int getOffset(Map<Integer,Integer[]> map,int year,int n,int offset){int off = 0;Integer[] years = map.get(n);if(null != years){for(int i:years){if(i == year){off = offset;break;}}}return off;}/***   获取某年的第n个节气为几日(从0小寒起算)* @param year* @param n* @return*/private int sTerm(int year, int n) {double centuryValue = 0;//节气的世纪值，每个节气的每个世纪值都不同int centuryIndex = -1;if(year>=1901 && year<=2000){//20世纪centuryIndex = 0;} else if(year>=2001 && year <= 2100){//21世纪centuryIndex = 1;} else {throw new RuntimeException("不支持此年份："+year+"，目前只支持1901年到2100年的时间范围");}centuryValue = CENTURY_ARRAY[centuryIndex][n];int dateNum = 0;int y = year%100;//步骤1:取年分的后两位数if(year%4 == 0 && year%100 !=0 || year%400 ==0){//闰年if(n == 0 || n == 1 || n == 2 || n == 3){//注意：凡闰年3月1日前闰年数要减一，即：L=[(Y-1)/4],因为小寒、大寒、立春、雨水这两个节气都小于3月1日,所以 y = y-1y = y-1;//步骤2}}dateNum = (int)(y*D+centuryValue)-(int)(y/4);//步骤3，使用公式[Y*D+C]-L计算dateNum += specialYearOffset(year,n);//步骤4，加上特殊的年分的节气偏移量return dateNum;}/***   母亲节和父亲节* @param year* @param month* @param day* @return*/private  String getMotherOrFatherDay(int year, int month, int day) {if (month != 5 && month != 6) return null;if ((month == 5 && (day < 8 || day > 14)) || (month == 6 && (day < 15 || day > 21))) return null;Calendar calendar = Calendar.getInstance();calendar.set(year, month - 1, 1);int weekDate = calendar.get(Calendar.DAY_OF_WEEK);weekDate = (weekDate == 1) ? 7 : weekDate - 1;switch (month) {case 5:if (day == 15 - weekDate) {return "母亲节";}break;case 6:if (day == 22 - weekDate) {return "父亲节";}break;}return null;}/***   感恩节* @param year* @param month* @param day* @return*/private String thanksgiving(int year, int month, int day) {if (month != 11) return null;if ((month == 11 && (day < 19 || day > 28))) return null;Calendar calendar = Calendar.getInstance();calendar.set(year, month - 1, 1);int weekDate = calendar.get(Calendar.DAY_OF_WEEK);weekDate = (weekDate == 1) ? 7 : weekDate - 1;switch (month) {case 11:if (day == 29 - weekDate + 4) {return "感恩节";}break;}return null;}/***  获取复活节* @param year* @param month* @param day* @return*/private String getEasterDay(int year, int month, int day) {int n = year - 1900;int a = n % 19;int q = n / 4;int b = (7 * a + 1) / 19;int m = (11 * a + 4 - b) % 29;int w = (n + q + 31 - m) % 7;int answer = 25 - m - w;String easterDay = "";if (answer > 0) {easterDay = year+"-"+4+"-"+answer;} else {easterDay = year+"-"+3+"-"+(31 + answer);}String searchDay = year+"-"+month+"-"+day;if(searchDay.equals(easterDay)) {return "复活节";}return null;}/***  输入公历日期初始化当前日期的生肖、天干地支、农历年、农历月、农历日、公历节日、农历节日、24节气*  输入日期的格式为(YYYY-MM-DD)* @param currentDate*/public void initLunarCalendarInfo(String currentDate){String[] splitDate = currentDate.split("-");//设置生肖int year = Integer.parseInt(splitDate[0]);this.animal=animals[(year - 4) % 12];//设置天干地支int num = year - 1900 + 36;this.ganZhiYear =  (tGan[num % 10] + dZhi[num % 12]);///设置阴历///基准日期Date baseDate = null;//当前日期Date nowaday = null;try {baseDate = chineseDateFormat.parse("1900年1月31日");nowaday = solarDateFormat.parse(currentDate);} catch (ParseException e) {e.printStackTrace();}// 获取当前日期与1900年1月31日相差的天数int offset = (int) ((nowaday.getTime() - baseDate.getTime()) / 86400000L);//用offset减去每农历年的天数，计算当天是农历第几天 iYear最终结果是农历的年份int iYear, daysOfYear = 0;for (iYear = 1900; iYear < 10000 && offset > 0; iYear++) {daysOfYear = lunarYearDays(iYear);offset -= daysOfYear;}if (offset < 0) {offset += daysOfYear;iYear--;}this.lunarYear = getLunarYearString(iYear+"");int leapMonth = leapMonth(iYear); // 闰哪个月,1-12boolean leap = false;// 用当年的天数offset,逐个减去每月（农历）的天数，求出当天是本月的第几天int iMonth, daysOfMonth = 0;for (iMonth = 1; iMonth < 13 && offset > 0; iMonth++) {// 闰月if (leapMonth > 0 && iMonth == (leapMonth + 1) && !leap) {--iMonth;leap = true;daysOfMonth = leapDays(iYear);} elsedaysOfMonth = monthDays(iYear, iMonth);offset -= daysOfMonth;// 解除闰月if (leap && iMonth == (leapMonth + 1))leap = false;}// offset为0时，并且刚才计算的月份是闰月，要校正if (offset == 0 && leapMonth > 0 && iMonth == leapMonth + 1) {if (leap) {leap = false;} else {leap = true;--iMonth;}}// offset小于0时，也要校正if (offset < 0) {offset += daysOfMonth;--iMonth;}// 设置对应的阴历月份this.lunarMonth = lunarNumber[iMonth - 1] ;if("一".equals(this.lunarMonth)){this.lunarMonth ="正";}if("十二".equals(this.lunarMonth)){this.lunarMonth ="腊";}if(leap){this.lunarMonth ="闰"+this.lunarMonth;}//设置阴历日int iDay = offset + 1;this.lunarDay = getLunarDayString(iDay);//设置节气int month=Integer.parseInt(splitDate[1]);int day=Integer.parseInt(splitDate[2]);if (day == sTerm(year, (month - 1) * 2)){this.lunarTerm = solarTerms[(month - 1) * 2];}else if (day == sTerm(year, (month - 1) * 2 + 1)){this.lunarTerm = solarTerms[(month - 1) * 2 + 1];}else{this.lunarTerm = "";}//设置阳历节日String solarFestival="";for (int i = 0; i < solarHoliday.length; i++) {// 返回公历节假日名称String sd = solarHoliday[i].split(" ")[0]; // 节假日的日期String sdv = solarHoliday[i].split(" ")[1]; // 节假日的名称String smonth_v = splitDate[1];String sday_v = splitDate[2];String smd = smonth_v + sday_v;if (sd.trim().equals(smd.trim())) {solarFestival =  sdv;break;}}//判断节日是否是父亲节或母亲节String motherOrFatherDay = getMotherOrFatherDay(year, month, day);if(motherOrFatherDay != null ){solarFestival = motherOrFatherDay;}//判断节日是否是复活节String easterDay = getEasterDay(year, month, day);if(easterDay != null ){solarFestival = easterDay;}//判断节日是否是感恩节String thanksgiving = thanksgiving(year, month, day);if(thanksgiving != null ){solarFestival = thanksgiving;}this.solarFestival = solarFestival;//设置阴历节日String lunarFestival="";for (int i = 0; i < lunarHoliday.length; i++) {//阴历闰月节日if(leap){break;}// 返回农历节假日名称String ld = lunarHoliday[i].split(" ")[0]; // 节假日的日期String ldv = lunarHoliday[i].split(" ")[1]; // 节假日的名称String lmonth_v = iMonth + "";String lday_v = iDay + "";String lmd = "";if (iMonth < 10) {lmonth_v = "0" + iMonth;}if (iDay < 10) {lday_v = "0" + iDay;}lmd = lmonth_v + lday_v;if ("12".equals(lmonth_v)) { // 除夕夜需要特殊处理if ((daysOfMonth == 29 && iDay == 29) || (daysOfMonth == 30 && iDay == 30)) {lunarFestival = "除夕";break;}}if (ld.trim().equals(lmd.trim())) {lunarFestival = ldv;break;}}if("清明".equals(this.lunarTerm)){lunarFestival = "清明节";}this.lunarFestival = lunarFestival;}/***  测试方法* @param args*/public static void main(String[] args) {LunarCalendarFestivalUtils festival = new LunarCalendarFestivalUtils();festival.initLunarCalendarInfo("2021-06-25");System.out.println("农历"+festival.getLunarYear()+"年"+festival.getLunarMonth()+"月"+festival.getLunarDay()+"日");System.out.println(festival.getGanZhiYear()+"【"+festival.getAnimal()+"】年");System.out.println(festival.getLunarTerm());System.out.println(festival.getLunarFestival();   );System.out.println(festival.getLunarFestival());}
}

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