java版公历转农历

package com.ljtools;

import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.Date;import java.util.GregorianCalendar;import java.util.Locale;

public class ChinaDate{final private 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 };

final private static int[] year20 = new int[] { 1, 4, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1 };

final private static int[] year19 = new int[] { 0, 3, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0 };

final private static int[] year2000 = new int[] { 0, 3, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1 };

public final static String[] nStr1 = new String[] { "", "正", "二", "三", "四", "五", "六", "七", "八", "九", "十", "十一","十二" };

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

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

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

private final static String[] solarTerm = 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" };

private final static String[] sFtv = 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", "0501 劳动节", "0504 青年节", "0512 护士节", "0601 儿童节", "0701 建党节", "0801 建军节", "0808 父亲节","0909 毛泽东逝世纪念", "0910 教师节", "0928 孔子诞辰", "1001*国庆节", "1006 老人节", "1024 联合国日", "1112 孙中山诞辰", "1220 澳门回归","1225 圣诞节", "1226 毛泽东诞辰" };

private final static String[] lFtv = new String[] { "0101*农历春节", "0115 元宵节", "0505 端午节", "0707 七夕情人节", "0815 中秋节","0909 重阳节", "1208 腊八节", "1224 小年", "0100*除夕" };

/** * 传回农历 y年的总天数 * * @param y * @return */final private static int lYearDays(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 * * @param y * @return */final private static int leapDays(int y) {if (leapMonth(y) != 0) {if ((lunarInfo[y – 1900] & 0x10000) != 0)return 30;elsereturn 29;} elsereturn 0;}

/** * 传回农历 y年闰哪个月 1-12 , 没闰传回 0 * * @param y * @return */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 * * @param y * @param m * @return */final private static int monthDays(int y, int m) {if ((lunarInfo[y – 1900] & (0x10000 >> m)) == 0)return 29;elsereturn 30;}

/** * 传回农历 y年的生肖 * * @param y * @return */final public static String AnimalsYear(int y) {return Animals[(y – 4) % 12];}

/** * 传入 月日的offset 传回干支,0=甲子 * * @param num * @return */final private static String cyclicalm(int num) {return (Gan[num % 10] + Zhi[num % 12]);}

/** * 传入 offset 传回干支, 0=甲子 * * @param y * @return */final public static String cyclical(int y) {int num = y – 1900 + 36;return (cyclicalm(num));}

/** * 传出农历.year0 .month1 .day2 .yearCyl3 .monCyl4 .dayCyl5 .isLeap6 * * @param y * @param m * @return */final private long[] Lunar(int y, int m) {long[] nongDate = new long[7];int i = 0, temp = 0, leap = 0;Date baseDate = new GregorianCalendar(1900 + 1900, 1, 31).getTime();Date objDate = new GregorianCalendar(y + 1900, m, 1).getTime();long offset = (objDate.getTime() – baseDate.getTime()) / 86400000L;if (y < 2000)offset += year19[m – 1];if (y > 2000)offset += year20[m – 1];if (y == 2000)offset += year2000[m – 1];nongDate[5] = offset + 40;nongDate[4] = 14;

for (i = 1900; i < 2050 && offset > 0; i++) {temp = lYearDays(i);offset -= temp;nongDate[4] += 12;}if (offset < 0) {offset += temp;i–;nongDate[4] -= 12;}nongDate[0] = i;nongDate[3] = i – 1864;leap = leapMonth(i); // 闰哪个月nongDate[6] = 0;

for (i = 1; i < 13 && offset > 0; i++) {// 闰月if (leap > 0 && i == (leap + 1) && nongDate[6] == 0) {–i;nongDate[6] = 1;temp = leapDays((int) nongDate[0]);} else {temp = monthDays((int) nongDate[0], i);}

// 解除闰月if (nongDate[6] == 1 && i == (leap + 1))nongDate[6] = 0;offset -= temp;if (nongDate[6] == 0)nongDate[4]++;}

if (offset == 0 && leap > 0 && i == leap + 1) {if (nongDate[6] == 1) {nongDate[6] = 0;} else {nongDate[6] = 1;–i;–nongDate[4];}}if (offset < 0) {offset += temp;–i;–nongDate[4];}nongDate[1] = i;nongDate[2] = offset + 1;return nongDate;}

/** * 传出y年m月d日对应的农历.year0 .month1 .day2 .yearCyl3 .monCyl4 .dayCyl5 .isLeap6 * * @param y * @param m * @param d * @return */final public static long[] calElement(int y, int m, int d) {long[] nongDate = new long[7];int i = 0, temp = 0, leap = 0;Date baseDate = new GregorianCalendar(0 + 1900, 0, 31).getTime();Date objDate = new GregorianCalendar(y, m – 1, d).getTime();long offset = (objDate.getTime() – baseDate.getTime()) / 86400000L;nongDate[5] = offset + 40;nongDate[4] = 14;

for (i = 1900; i < 2050 && offset > 0; i++) {temp = lYearDays(i);offset -= temp;nongDate[4] += 12;}if (offset < 0) {offset += temp;i–;nongDate[4] -= 12;}nongDate[0] = i;nongDate[3] = i – 1864;leap = leapMonth(i); // 闰哪个月nongDate[6] = 0;

for (i = 1; i < 13 && offset > 0; i++) {// 闰月if (leap > 0 && i == (leap + 1) && nongDate[6] == 0) {–i;nongDate[6] = 1;temp = leapDays((int) nongDate[0]);} else {temp = monthDays((int) nongDate[0], i);}

// 解除闰月if (nongDate[6] == 1 && i == (leap + 1))nongDate[6] = 0;offset -= temp;if (nongDate[6] == 0)nongDate[4]++;}

if (offset == 0 && leap > 0 && i == leap + 1) {if (nongDate[6] == 1) {nongDate[6] = 0;} else {nongDate[6] = 1;–i;–nongDate[4];}}if (offset < 0) {offset += temp;–i;–nongDate[4];}nongDate[1] = i;nongDate[2] = offset + 1;return nongDate;}

public final static String getChinaDate(int day) {String a = "";if (day == 10)return "初十";if (day == 20)return "二十";if (day == 30)return "三十";int two = (int) ((day) / 10);if (two == 0)a = "初";if (two == 1)a = "十";if (two == 2)a = "廿";if (two == 3)a = "三";int one = (int) (day % 10);switch (one) {case 1:a += "一";break;case 2:a += "二";break;case 3:a += "三";break;case 4:a += "四";break;case 5:a += "五";break;case 6:a += "六";break;case 7:a += "七";break;case 8:a += "八";break;case 9:a += "九";break;}return a;}

public static String today() {Calendar today = Calendar.getInstance(Locale.SIMPLIFIED_CHINESE);int year = today.get(Calendar.YEAR);int month = today.get(Calendar.MONTH) + 1;int date = today.get(Calendar.DATE);long[] l = calElement(year, month, date);StringBuffer sToday = new StringBuffer();try {sToday.append(sdf.format(today.getTime()));sToday.append(" 农历");sToday.append(cyclical(year));sToday.append(‘(‘);sToday.append(AnimalsYear(year));sToday.append(")年");sToday.append(nStr1[(int) l[1]]);sToday.append("月");sToday.append(getChinaDate((int) (l[2])));return sToday.toString();} finally {sToday = null;}}

private static SimpleDateFormat sdf = new SimpleDateFormat("yyyy年M月d日 EEEEE");

/** * 农历日历工具使用演示 * * @param args */public static void main(String[] args) {System.out.println(today());}}

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