公历农历互相转换的Java日历工具类详解编程语言

private static final int DAYS_BEFORE_MONTH[] = { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 }; /** * 用来表示1900年到2099年间农历年份的相关信息，共24位bit的16进制表示，其中： * 1. 前4位表示该年闰哪个月； * 2. 5-17位表示农历年份13个月的大小月分布，0表示小，1表示大； * 3. 最后7位表示农历年首（正月初一）对应的公历日期。 * 以2014年的数据0x955ABF为例说明： * 1001 0101 0101 1010 1011 1111 * 闰九月 农历正月初一对应公历1月31号 private static final int LUNAR_INFO[] = { 0x84B6BF,/*1900*/ 0x04AE53,0x0A5748,0x5526BD,0x0D2650,0x0D9544,0x46AAB9,0x056A4D,0x09AD42,0x24AEB6,0x04AE4A,/*1901-1910*/ 0x6A4DBE,0x0A4D52,0x0D2546,0x5D52BA,0x0B544E,0x0D6A43,0x296D37,0x095B4B,0x749BC1,0x049754,/*1911-1920*/ 0x0A4B48,0x5B25BC,0x06A550,0x06D445,0x4ADAB8,0x02B64D,0x095742,0x2497B7,0x04974A,0x664B3E,/*1921-1930*/ 0x0D4A51,0x0EA546,0x56D4BA,0x05AD4E,0x02B644,0x393738,0x092E4B,0x7C96BF,0x0C9553,0x0D4A48,/*1931-1940*/ 0x6DA53B,0x0B554F,0x056A45,0x4AADB9,0x025D4D,0x092D42,0x2C95B6,0x0A954A,0x7B4ABD,0x06CA51,/*1941-1950*/ 0x0B5546,0x555ABB,0x04DA4E,0x0A5B43,0x352BB8,0x052B4C,0x8A953F,0x0E9552,0x06AA48,0x6AD53C,/*1951-1960*/ 0x0AB54F,0x04B645,0x4A5739,0x0A574D,0x052642,0x3E9335,0x0D9549,0x75AABE,0x056A51,0x096D46,/*1961-1970*/ 0x54AEBB,0x04AD4F,0x0A4D43,0x4D26B7,0x0D254B,0x8D52BF,0x0B5452,0x0B6A47,0x696D3C,0x095B50,/*1971-1980*/ 0x049B45,0x4A4BB9,0x0A4B4D,0xAB25C2,0x06A554,0x06D449,0x6ADA3D,0x0AB651,0x095746,0x5497BB,/*1981-1990*/ 0x04974F,0x064B44,0x36A537,0x0EA54A,0x86B2BF,0x05AC53,0x0AB647,0x5936BC,0x092E50,0x0C9645,/*1991-2000*/ 0x4D4AB8,0x0D4A4C,0x0DA541,0x25AAB6,0x056A49,0x7AADBD,0x025D52,0x092D47,0x5C95BA,0x0A954E,/*2001-2010*/ 0x0B4A43,0x4B5537,0x0AD54A,0x955ABF,0x04BA53,0x0A5B48,0x652BBC,0x052B50,0x0A9345,0x474AB9,/*2011-2020*/ 0x06AA4C,0x0AD541,0x24DAB6,0x04B64A,0x6a573D,0x0A4E51,0x0D2646,0x5E933A,0x0D534D,0x05AA43,/*2021-2030*/ 0x36B537,0x096D4B,0xB4AEBF,0x04AD53,0x0A4D48,0x6D25BC,0x0D254F,0x0D5244,0x5DAA38,0x0B5A4C,/*2031-2040*/ 0x056D41,0x24ADB6,0x049B4A,0x7A4BBE,0x0A4B51,0x0AA546,0x5B52BA,0x06D24E,0x0ADA42,0x355B37,/*2041-2050*/ 0x09374B,0x8497C1,0x049753,0x064B48,0x66A53C,0x0EA54F,0x06AA44,0x4AB638,0x0AAE4C,0x092E42,/*2051-2060*/ 0x3C9735,0x0C9649,0x7D4ABD,0x0D4A51,0x0DA545,0x55AABA,0x056A4E,0x0A6D43,0x452EB7,0x052D4B,/*2061-2070*/ 0x8A95BF,0x0A9553,0x0B4A47,0x6B553B,0x0AD54F,0x055A45,0x4A5D38,0x0A5B4C,0x052B42,0x3A93B6,/*2071-2080*/ 0x069349,0x7729BD,0x06AA51,0x0AD546,0x54DABA,0x04B64E,0x0A5743,0x452738,0x0D264A,0x8E933E,/*2081-2090*/ 0x0D5252,0x0DAA47,0x66B53B,0x056D4F,0x04AE45,0x4A4EB9,0x0A4D4C,0x0D1541,0x2D92B5 /*2091-2099*/ /** * 将农历日期转换为公历日期 * @param year 农历年份 * @param month 农历月 * @param monthDay 农历日 * @param isLeapMonth 该月是否是闰月 * [url=home.php?mod=space uid=7300]@return[/url] 返回农历日期对应的公历日期，year0, month1, day2. public static final int[] lunarToSolar(int year, int month, int monthDay, boolean isLeapMonth) { int dayOffset; int leapMonth; int i; if (year MIN_YEAR || year MAX_YEAR || month 1 || month 12 || monthDay 1 || monthDay 30) { throw new IllegalArgumentException( "Illegal lunar date, must be like that:/n/t" + "year : 1900~2099/n/t" + "month : 1~12/n/t" + "day : 1~30"); dayOffset = (LUNAR_INFO[year - MIN_YEAR] 0x001F) - 1; if (((LUNAR_INFO[year - MIN_YEAR] 0x0060) 5) == 2) dayOffset += 31; for (i = 1; i month; i++) { if ((LUNAR_INFO[year - MIN_YEAR] (0x80000 (i - 1))) == 0) dayOffset += 29; else dayOffset += 30; dayOffset += monthDay; leapMonth = (LUNAR_INFO[year - MIN_YEAR] 0xf00000) 20; // 这一年有闰月 if (leapMonth != 0) { if (month leapMonth || (month == leapMonth isLeapMonth)) { if ((LUNAR_INFO[year - MIN_YEAR] (0x80000 (month - 1))) == 0) dayOffset += 29; else dayOffset += 30; if (dayOffset 366 || (year % 4 != 0 dayOffset 365)) { year += 1; if (year % 4 == 1) dayOffset -= 366; else dayOffset -= 365; int[] solarInfo = new int[3]; for (i = 1; i i++) { int iPos = DAYS_BEFORE_MONTH[i]; if (year % 4 == 0 i 2) { iPos += 1; if (year % 4 == 0 i == 2 iPos + 1 == dayOffset) { solarInfo[1] = i; solarInfo[2] = dayOffset - 31; break; if (iPos = dayOffset) { solarInfo[1] = i; iPos = DAYS_BEFORE_MONTH[i - 1]; if (year % 4 == 0 i 2) { iPos += 1; if (dayOffset iPos) solarInfo[2] = dayOffset - iPos; else if (dayOffset == iPos) { if (year % 4 == 0 i == 2) solarInfo[2] = DAYS_BEFORE_MONTH[i] - DAYS_BEFORE_MONTH[i - 1] + 1; else solarInfo[2] = DAYS_BEFORE_MONTH[i] - DAYS_BEFORE_MONTH[i - 1]; } else solarInfo[2] = dayOffset; break; solarInfo[0] = year; return solarInfo; /** * 将公历日期转换为农历日期，且标识是否是闰月 * @param year * @param month * @param monthDay * @return 返回公历日期对应的农历日期，year0，month1，day2，leap3 public static final int[] solarToLunar(int year, int month, int monthDay) { int[] lunarDate = new int[4]; Date baseDate = new GregorianCalendar(1900, 0, 31).getTime(); Date objDate = new GregorianCalendar(year, month - 1, monthDay).getTime(); int offset = (int) ((objDate.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, offset是当年的第几天 int iYear, daysOfYear = 0; for (iYear = MIN_YEAR; iYear = MAX_YEAR offset iYear++) { daysOfYear = daysInLunarYear(iYear); offset -= daysOfYear; if (offset 0) { offset += daysOfYear; iYear--; // 农历年份 lunarDate[0] = iYear; int leapMonth = leapMonth(iYear); // 闰哪个月,1-12 boolean isLeap = 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 iMonth++) { daysOfMonth = daysInLunarMonth(iYear, iMonth); offset -= daysOfMonth; // 当前月超过闰月，要校正 if (leapMonth != 0 iMonth leapMonth) { --iMonth; if (iMonth == leapMonth) { isLeap = true; // offset小于0时，也要校正 if (offset 0) { offset += daysOfMonth; --iMonth; lunarDate[1] = iMonth; lunarDate[2] = offset + 1; lunarDate[3] = isLeap ? 1 : 0; return lunarDate; /** * 传回农历year年month月的总天数 * @param year 要计算的年份 * @param month 要计算的月 * @return 传回天数 final public static int daysInMonth(int year, int month) { return daysInMonth(year, month, false); /** * 传回农历year年month月的总天数 * @param year 要计算的年份 * @param month 要计算的月 * @param leap 当月是否是闰月 * @return 传回天数，如果闰月是错误的，返回0. public static final int daysInMonth(int year, int month, boolean leap) { int leapMonth = leapMonth(year); int offset = 0; // 如果本年有闰月且month大于闰月时，需要校正 if (leapMonth != 0 month leapMonth) { offset = 1; // 不考虑闰月 if (!leap) { return daysInLunarMonth(year, month + offset); } else { // 传入的闰月是正确的月份 if (leapMonth != 0 leapMonth == month) { return daysInLunarMonth(year, month + 1); return 0; /** * 传回农历 year年的总天数 * @param year 将要计算的年份 * @return 返回传入年份的总天数 private static int daysInLunarYear(int year) { int i, sum = 348; if (leapMonth(year) != 0) { sum = 377; int monthInfo = LUNAR_INFO[year - MIN_YEAR] 0x0FFF80; for (i = 0x80000; i 0x7; i = 1) { if ((monthInfo i) != 0) sum += 1; return sum; /** * 传回农历 year年month月的总天数，总共有13个月包括闰月 * @param year 将要计算的年份 * @param month 将要计算的月份 * @return 传回农历 year年month月的总天数 private static int daysInLunarMonth(int year, int month) { if ((LUNAR_INFO[year - MIN_YEAR] (0x100000 month)) == 0) return 29; else return 30; /** * 传回农历 year年闰哪个月 1-12 , 没闰传回 0 * @param year 将要计算的年份 * @return 传回农历 year年闰哪个月1-12, 没闰传回 0 private static int leapMonth(int year) { return (int) ((LUNAR_INFO[year - MIN_YEAR] 0xF00000)) 20; }

以上工具类支持农历1900年正月初一到2099年腊月三十之间的农历日期。

来自：http://www.eoeandroid.com/thread-327298-1-1.html

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