转自：http://www.blogjava.net/soddabao/archive/2007/01/04/91729.html前几天在blog中,对网友的java万年历作修改,看到有的网友说能不能加上农历,后来在网上看到有人写过几个阳历转阴历的算法,我比较了一个发现,这个算法还算不错,只要有的计算机编程基础的人看明白应该是没有问题的,其实这个就和我们以前在c中,判断一天是周几的算法差不多,都是和某一个特定的时间作比较,算出差多少天,再根据月大月小瑞月这些规则,算出是农历的那年那月那日.

package clock;

import java.text.ParseException;

import java.text.SimpleDateFormat;

import java.util.Calendar;

import java.util.Date;

public class Lunar {

private int year;

private int month;

private int day;

private boolean leap;

final static String chineseNumber[] = {"一", "二", "三", "四", "五", "六", "七", "八", "九", "十", "十一", "十二"};

static SimpleDateFormat chineseDateFormat = new SimpleDateFormat("yyyy年MM月dd日");

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};

//====== 传回农历 y年的总天数

final private static int yearDays(int y) {

int i, sum = 348;

for (i = 0x8000; i > 0x8; i >>= 1) {

if ((lunarInfo[y - 1900] & i) != 0) sum += 1;

}

return (sum + leapDays(y));

}

//====== 传回农历 y年闰月的天数

final private static int leapDays(int y) {

if (leapMonth(y) != 0) {

if ((lunarInfo[y - 1900] & 0x10000) != 0)

return 30;

else

return 29;

} else

return 0;

}

//====== 传回农历 y年闰哪个月 1-12 , 没闰传回 0

final private static int leapMonth(int y) {

return (int) (lunarInfo[y - 1900] & 0xf);

}

//====== 传回农历 y年m月的总天数

final private static int monthDays(int y, int m) {

if ((lunarInfo[y - 1900] & (0x10000 >> m)) == 0)

return 29;

else

return 30;

}

//====== 传回农历 y年的生肖

final public String animalsYear() {

final String[] Animals = new String[]{"鼠", "牛", "虎", "兔", "龙", "蛇", "马", "羊", "猴", "鸡", "狗", "猪"};

return Animals[(year - 4) % 12];

}

//====== 传入 月日的offset 传回干支, 0=甲子

final private static String cyclicalm(int num) {

final String[] Gan = new String[]{"甲", "乙", "丙", "丁", "戊", "己", "庚", "辛", "壬", "癸"};

final String[] Zhi = new String[]{"子", "丑", "寅", "卯", "辰", "巳", "午", "未", "申", "酉", "戌", "亥"};

return (Gan[num % 10] + Zhi[num % 12]);

}

//====== 传入 offset 传回干支, 0=甲子

final public String cyclical() {

int num = year - 1900 + 36;

return (cyclicalm(num));

}

/** *//**

* 传出y年m月d日对应的农历.

* yearCyl3:农历年与1864的相差数 ?

* monCyl4:从1900年1月31日以来,闰月数

* dayCyl5:与1900年1月31日相差的天数,再加40 ?

* @param cal

* @return

*/

public Lunar(Calendar cal) {

@SuppressWarnings("unused") int yearCyl, monCyl, dayCyl;

int leapMonth = 0;

Date baseDate = null;

try {

baseDate = chineseDateFormat.parse("1900年1月31日");

} catch (ParseException e) {

e.printStackTrace(); //To change body of catch statement use Options | File Templates.

}

//求出和1900年1月31日相差的天数

int offset = (int) ((cal.getTime().getTime() - baseDate.getTime()) / 86400000L);

dayCyl = offset + 40;

monCyl = 14;

//用offset减去每农历年的天数

// 计算当天是农历第几天

//i最终结果是农历的年份

//offset是当年的第几天

int iYear, daysOfYear = 0;

for (iYear = 1900; iYear < 2050 && offset > 0; iYear++) {

daysOfYear = yearDays(iYear);

offset -= daysOfYear;

monCyl += 12;

}

if (offset < 0) {

offset += daysOfYear;

iYear--;

monCyl -= 12;

}

//农历年份

year = iYear;

yearCyl = iYear - 1864;

leapMonth = leapMonth(iYear); //闰哪个月,1-12

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(year);

} else

daysOfMonth = monthDays(year, iMonth);

offset -= daysOfMonth;

//解除闰月

if (leap && iMonth == (leapMonth + 1)) leap = false;

if (!leap) monCyl++;

}

//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;

--monCyl;

}

}

//offset小于0时，也要校正

if (offset < 0) {

offset += daysOfMonth;

--iMonth;

--monCyl;

}

month = iMonth;

day = offset + 1;

}

public static String getChinaDayString(int day) {

String chineseTen[] = {"初", "十", "廿", "卅"};

int n = day % 10 == 0 ? 9 : day % 10 - 1;

if (day > 30)

return "";

if (day == 10)

return "初十";

else

return chineseTen[day / 10] + chineseNumber[n];

}

public String toString() {

return year + "年" + (leap ? "闰" : "") + chineseNumber[month - 1] + "月" + getChinaDayString(day);

}

public static void main(String[] args) throws ParseException {

Calendar today = Calendar.getInstance();

today.setTime(chineseDateFormat.parse("2003年1月1日"));

Lunar lunar = new Lunar(today);

System.out.println("北京时间：" + chineseDateFormat.format(today.getTime()) + "　农历" + lunar);

}

}

分享到：

2012-06-07 10:25

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评论

1 楼

zhunengfei

2015-06-16

博主你好， 假如我知道 农历 是 6 16(数据库中存的是这个) 我怎么样把6-16转换成阳历啊？很苦恼