Java 阴历阳历转换

代码如下 收藏备用

import java.util.Arrays;

import java.util.Date;

import java.util.GregorianCalendar;

/**

* 工具类，实现阴阳历互转

*

* @author luohao

*/

public class LunarCalendar {

/**

* 支持转换的最小农历年份

*/

public static final int MIN_YEAR = 1900;

/**

* 支持转换的最大农历年份

*/

public static final int MAX_YEAR = 2099;

/**

* 公历每月前的天数

*/

private static final int[] DAYS_BEFORE_MONTH = ;

/**

* 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 = {

/*1900*/

0x84B6BF,

/*1901-1910*/

0x04AE53, 0x0A5748, 0x5526BD, 0x0D2650, 0x0D9544, 0x46AAB9, 0x056A4D, 0x09AD42, 0x24AEB6, 0x04AE4A,

/*1911-1920*/

0x6A4DBE, 0x0A4D52, 0x0D2546, 0x5D52BA, 0x0B544E, 0x0D6A43, 0x296D37, 0x095B4B, 0x749BC1, 0x049754,

/*1921-1930*/

0x0A4B48, 0x5B25BC, 0x06A550, 0x06D445, 0x4ADAB8, 0x02B64D, 0x095742, 0x2497B7, 0x04974A, 0x664B3E,

/*1931-1940*/

0x0D4A51, 0x0EA546, 0x56D4BA, 0x05AD4E, 0x02B644, 0x393738, 0x092E4B, 0x7C96BF, 0x0C9553, 0x0D4A48,

/*1941-1950*/

0x6DA53B, 0x0B554F, 0x056A45, 0x4AADB9, 0x025D4D, 0x092D42, 0x2C95B6, 0x0A954A, 0x7B4ABD, 0x06CA51,

/*1951-1960*/

0x0B5546, 0x555ABB, 0x04DA4E, 0x0A5B43, 0x352BB8, 0x052B4C, 0x8A953F, 0x0E9552, 0x06AA48, 0x6AD53C,

/*1961-1970*/

0x0AB54F, 0x04B645, 0x4A5739, 0x0A574D, 0x052642, 0x3E9335, 0x0D9549, 0x75AABE, 0x056A51, 0x096D46,

/*1971-1980*/

0x54AEBB, 0x04AD4F, 0x0A4D43, 0x4D26B7, 0x0D254B, 0x8D52BF, 0x0B5452, 0x0B6A47, 0x696D3C, 0x095B50,

/*1981-1990*/

0x049B45, 0x4A4BB9, 0x0A4B4D, 0xAB25C2, 0x06A554, 0x06D449, 0x6ADA3D, 0x0AB651, 0x095746, 0x5497BB,

/*1991-2000*/

0x04974F, 0x064B44, 0x36A537, 0x0EA54A, 0x86B2BF, 0x05AC53, 0x0AB647, 0x5936BC, 0x092E50, 0x0C9645,

/*2001-2010*/

0x4D4AB8, 0x0D4A4C, 0x0DA541, 0x25AAB6, 0x056A49, 0x7AADBD, 0x025D52, 0x092D47, 0x5C95BA, 0x0A954E,

/*2011-2020*/

0x0B4A43, 0x4B5537, 0x0AD54A, 0x955ABF, 0x04BA53, 0x0A5B48, 0x652BBC, 0x052B50, 0x0A9345, 0x474AB9,

/*2021-2030*/

0x06AA4C, 0x0AD541, 0x24DAB6, 0x04B64A, 0x6a573D, 0x0A4E51, 0x0D2646, 0x5E933A, 0x0D534D, 0x05AA43,

/*2031-2040*/

0x36B537, 0x096D4B, 0xB4AEBF, 0x04AD53, 0x0A4D48, 0x6D25BC, 0x0D254F, 0x0D5244, 0x5DAA38, 0x0B5A4C,

/*2041-2050*/

0x056D41, 0x24ADB6, 0x049B4A, 0x7A4BBE, 0x0A4B51, 0x0AA546, 0x5B52BA, 0x06D24E, 0x0ADA42, 0x355B37,

/*2051-2060*/

0x09374B, 0x8497C1, 0x049753, 0x064B48, 0x66A53C, 0x0EA54F, 0x06AA44, 0x4AB638, 0x0AAE4C, 0x092E42,

/*2061-2070*/

0x3C9735, 0x0C9649, 0x7D4ABD, 0x0D4A51, 0x0DA545, 0x55AABA, 0x056A4E, 0x0A6D43, 0x452EB7, 0x052D4B,

/*2071-2080*/

0x8A95BF, 0x0A9553, 0x0B4A47, 0x6B553B, 0x0AD54F, 0x055A45, 0x4A5D38, 0x0A5B4C, 0x052B42, 0x3A93B6,

/*2081-2090*/

0x069349, 0x7729BD, 0x06AA51, 0x0AD546, 0x54DABA, 0x04B64E, 0x0A5743, 0x452738, 0x0D264A, 0x8E933E,

/*2091-2099*/

0x0D5252, 0x0DAA47, 0x66B53B, 0x056D4F, 0x04AE45, 0x4A4EB9, 0x0A4D4C, 0x0D1541, 0x2D92B5

};

/**

* 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

* @return 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 < 13; 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 0; 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 0; 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 ((LUNAR_INFO[year - MIN_YEAR] & 0xF00000)) >> 20;

}

public static void main(String[] args) {

System.out.println(Arrays.toString(solarToLunar(2019, 4, 4)));

}

}