在网上看了许多文档都没有将日期计算为我需要的干支历法年月日时、生肖等，于是自己总结写了一个，返回的数据算是比较完整了，只是没有带节气和节假日。代码如下（一个工具类，复制运行即可得出数据）：
package controller; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.*; import javax.script.Invocable; import javax.script.ScriptEngine; import javax.script.ScriptEngineManager; /** * 〈将日期转换为干支历法的年月日时，并计算生肖、阴历、星期几〉 * * @author wgn * @create 2018/6/29 */ public class Birth { int[] lunarInfo = new int[]{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, 0x0a5b0, 0x14573, 0x052b0, 0x0a9a8, 0x0e950, 0x06aa0, 0x0aea6, 0x0ab50, 0x04b60, 0x0aae4, 0x0a570, 0x05260, 0x0f263, 0x0d950, 0x05b57, 0x056a0, 0x096d0, 0x04dd5, 0x04ad0, 0x0a4d0, 0x0d4d4, 0x0d250, 0x0d558, 0x0b540, 0x0b6a0, 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, 0x14b63}; String[] Gan = new String[]{"甲", "乙", "丙", "丁", "戊", "己", "庚", "辛", "壬", "癸"}; String[] Zhi = new String[]{"子", "丑", "寅", "卯", "辰", "巳", "午", "未", "申", "酉", "戌", "亥"}; long[] sTermInfo = new long[]{0, 21208, 42467, 63836, 85337, 107014, 128867, 150921, 173149, 195551, 218072, 240693, 263343, 285989, 308563, 331033, 353350, 375494, 397447, 419210, 440795, 462224, 483532, 504758}; private int year; private int month; private int day; private boolean leap; final static String chineseNumber[] = {"正", "二", "三", "四", "五", "六", "七", "八", "九", "十", "十一", "腊"}; final static String chineseNumber1[] = {"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"); public Birth(Calendar cal) { 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 = lYearDays(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"; if (day == 20) return "二十"; if (day == 30) return "三十"; return chineseTen[day / 10] + chineseNumber1[n]; } public Map toLunar() { String m = null; String d = getChinaDayString(day); if (leap) { m = "闰" + chineseNumber[month - 1] + "月"; } else { m = chineseNumber[month - 1] + "月"; } Map map = new HashMap(); map.put("m", m); map.put("d", d); return map; } public String getChinaWeekdayString(String weekday) { if (weekday.equals("Mon")) return "一"; if (weekday.equals("Tue")) return "二"; if (weekday.equals("Wed")) return "三"; if (weekday.equals("Thu")) return "四"; if (weekday.equals("Fri")) return "五"; if (weekday.equals("Sat")) return "六"; if (weekday.equals("Sun")) return "日"; else return ""; } /** * 返回农历 y年的总天数 * * @param y */ public int lYearDays(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 * * @param y * @return */ public int leapDays(int y) { if (leapMonth(y) > 0) { long day = lunarInfo[y - 1900] & 0x10000; return day > 0 ? 30 : 29; } else return 0; } /** * 返回农历 y年闰哪个月 1-12 , 没闰返回 0 * * @param y * @return */ public int leapMonth(int y) { return (lunarInfo[y - 1900] & 0xf); } /** * 返回农历 y年m月的总天数 * * @param y * @param m * @return */ public int monthDays(int y, int m) { return ((lunarInfo[y - 1900] & (0x10000 >> m)) > 0 ? 30 : 29); } 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]; } // ===== 某年的第n个节气为几日(从0小寒起算) Date.UTC(1900, 0, 6, 2, 5) /** * 正确的立春时间应该是以小时来进行计算的 * * @param y * @param n * @return */ public int sTerm(int y, int n) { long times = 31556925974l * (y - 1900) + sTermInfo[n] * 60000l + (long) 0.7 * (y - 1900); Date offDate = new Date(times - 2208549300000l); // 1、取得本地时间： Calendar cal = Calendar.getInstance(); cal.setTime(offDate); // 2、取得时间偏移量： int zoneOffset = cal.get(cal.ZONE_OFFSET); // 3、取得夏令时差： int dstOffset = cal.get(cal.DST_OFFSET); // 4、从本地时间里扣除这些差量，即可以取得UTC时间： cal.add(cal.MILLISECOND, -(zoneOffset + dstOffset)); // 之后调用cal.get(int x)或cal.getTimeInMillis()方法所取得的时间即是UTC标准时间。 return (cal.get(Calendar.DATE)); } /** * 传入 offset 返回干支, 0=甲子 * * @param num * @return */ public String cyclical(int num) { return (Gan[num % 10] + Zhi[num % 12]); } /** * 计算 并 打印 八字 * * @param date * @throws ParseException */ public Map horoscope(String date) throws ParseException { Map resMap = new HashMap(); SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); Calendar cal = Calendar.getInstance(); cal.setTime(sdf.parse(date)); int y = cal.get(Calendar.YEAR); int m = cal.get(Calendar.MONTH); int i = cal.get(Calendar.DATE) - 1; String cY = null; String cM = null; String cD = null; String cH = null; // 年柱 1900年立春后为庚子年(60进制36) if (m < 2) { cY = cyclical(y - 1900 + 36 - 1); } else { cY = cyclical(y - 1900 + 36); } int term2 = sTerm(y, 2); // 立春日期 // 月柱 1900年1月小寒以前为 丙子月(60进制12) int firstNode = sTerm(y, m * 2); // 返回当月「节」为几日开始 cM = cyclical((y - 1900) * 12 + m + 12); int dayCyclical = jlday(y, m); // 依节气调整二月分的年柱, 以立春为界 if (m == 1 && (i + 1) >= term2) cY = cyclical(y - 1900 + 36); // 依节气月柱, 以「节」为界 if ((i + 1) >= firstNode) cM = cyclical((y - 1900) * 12 + m + 13); // 日柱 cD = cyclical(dayCyclical + i); // 时柱 int hour = cal.get(Calendar.HOUR_OF_DAY); cH = Gan[hourG(cD.substring(0, 1), hour)] + Zhi[hourZ(hour)]; resMap.put("cY", cY + "年"); resMap.put("cM", cM + "月"); resMap.put("cD", cD + "日"); resMap.put("cH", cH + "时"); return resMap; } /** * 根据 日干 推算 时柱 根据提供的推算图来计算 * * @param dG * @param hour * @return */ public int hourG(String dG, int hour) { int ind = 1; for (String s : Gan) { if (s.equals(dG)) { break; } ind++; } ind = ind % 5; // 五个为一周期 int hourind = hourZ(hour); if (hourind > 10) return hourind - 10 + (ind - 1) * 2; else { hourind = hourind + (ind - 1) * 2; return hourind >= 10 ? hourind - 10 : hourind; } } /** * 返回 小时对应的 支的索引 * * @param hour * @return */ public int hourZ(int hour) { if (hour >= 23 || hour < 1) return 0; else if (hour >= 1 && hour < 3) return 1; else if (hour >= 3 && hour < 5) return 2; else if (hour >= 5 && hour < 7) return 3; else if (hour >= 7 && hour < 9) return 4; else if (hour >= 9 && hour < 11) return 5; else if (hour >= 11 && hour < 13) return 6; else if (hour >= 13 && hour < 15) return 7; else if (hour >= 15 && hour < 17) return 8; else if (hour >= 17 && hour < 19) return 9; else if (hour >= 19 && hour < 21) return 10; else if (hour >= 21 && hour < 23) return 11; return 0; } /** * 间隔天数 * * @param y * @param m * @return */ public int jlday(int y, int m) { ScriptEngineManager sem = new ScriptEngineManager(); /* script引擎管理 */ ScriptEngine se = sem.getEngineByName("javascript"); /* script引擎 */ try { se.eval(" var y =" + y + ",m=" + m + " ;"); /* 执行一段script */ se.eval("function jlday( ) { " + "return Date.UTC(y,m,1,0,0,0,0)/86400000+25567+10;" + "}"); /* 添加一个方法 */ Invocable invocableEngine = (Invocable) se; Object callbackvalue = invocableEngine.invokeFunction("jlday"); /* 调用方法中的函数 */ if (callbackvalue != null) { double numdb = Double.valueOf(callbackvalue.toString()); return (int) numdb; } } catch (Exception e) { e.printStackTrace(); } return 0; } public static void main(String[] args) throws ParseException { Calendar today = Calendar.getInstance(); Date date = new Date(); today.setTime(date);//加载当前日期 Birth birth = new Birth(today); Map resMap = new HashMap(); SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); Map lunar = birth.toLunar();//计算输出阴历日期 String animalsYear = birth.animalsYear() + "年";//计算输出属相 String dayTime = sdf.format(date);//输出阳历日期 String weekDay = "星期" + birth.getChinaWeekdayString(today.getTime().toString().substring(0, 3));//计算输出星期几 Map map = birth.horoscope(dayTime); Object cY = map.get("cY"); Object cM = map.get("cM"); Object cD = map.get("cD"); Object cH = map.get("cH"); resMap.put("lunar", lunar); resMap.put("animalsYear", animalsYear); resMap.put("dayTime", dayTime); resMap.put("weekDay", weekDay); resMap.put("cY", cY); resMap.put("cM", cM); resMap.put("cD", cD); resMap.put("cH", cH); System.out.println(resMap); } }
运行main方法得到的结果如下：
最后，万分感谢龙思霓大神的指导！