java 农历日期工具类


import org.apache.commons.lang3.time.DateFormatUtils;import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;/*** 农历工具类*/
public class ChineseCalendar {// 阳历日期private Date date;// 农历日期private Date nDate;// 是否是闰月private boolean runyue;// 农历年份private int nYear;// 农历月份private int nMonth;// 农历日private int nDay;final static SimpleDateFormat chineseDateFormat = new SimpleDateFormat("yyyy年MM月dd日");final static SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");final static String[] chineseNumber = {"零", "一", "二", "三", "四", "五", "六", "七", "八", "九", "十", "十一", "十二"};final String[] animals = new String[]{"鼠", "牛", "虎", "兔", "龙", "蛇", "马", "羊", "猴", "鸡", "狗", "猪"};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};private ChineseCalendar() {}/*** 初始化** @param dateStr     阴历年月日 yyyy-MM-dd* @param isLeapMonth 是否是润月中的后面的月* @return 农历*/public static ChineseCalendar asChinaDate(String dateStr, Boolean isLeapMonth) {try {return asChinaDate(dateFormat.parse(dateStr), isLeapMonth);} catch (ParseException e) {throw new RuntimeException(e);}}public static ChineseCalendar asChinaDate(Date date, Boolean isLeapMonth) {int year, month, day;ChineseCalendar calendar = new ChineseCalendar();Calendar cal = Calendar.getInstance();cal.setTime(date);year = cal.get(Calendar.YEAR);month = cal.get(Calendar.MONTH) + 1;day = cal.get(Calendar.DAY_OF_MONTH);int days = 0;// 年的总天数for (int iYear = 1900; iYear < year; iYear++) {days += yearDays(iYear);}// 月的总天数for (int iMonth = 1; iMonth < month; iMonth++) {days += monthDays(year, iMonth);}int leapMonth = leapMonth(year); // 闰哪个月,1-12 （双月）if ((isLeapMonth && leapMonth == month)) {days += monthDays(year, month);} else if (leapMonth < month) {days += leapDays(year);}days += day;Date baseDate = null;Date baseDate2 = null;try {baseDate = chineseDateFormat.parse("1900年1月31日");baseDate2 = chineseDateFormat.parse("1970年1月1日");} catch (ParseException e) {throw new RuntimeException(e);}// 求出1970年1月1日和1900年1月31日相差的天数int offset = (int) ((baseDate2.getTime() - baseDate.getTime()) / 86400000L);days = days - offset - 1;long time = 1000L * days * 24 * 60 * 60;calendar.date = new Date(time);calendar.nYear = year;calendar.nMonth = month;calendar.nDay = day;calendar.runyue = leapMonth == month;try {calendar.nDate = chineseDateFormat.parse(calendar.nYear + "年" + calendar.nMonth + "月" + calendar.nDay + "日");} catch (ParseException e) {e.printStackTrace();}return calendar;}public static ChineseCalendar as(String dateStr) {try {return as(dateFormat.parse(dateStr));} catch (ParseException e) {throw new RuntimeException(e);}}public static ChineseCalendar as(Date date) {ChineseCalendar chin = new ChineseCalendar();chin.date = date;Calendar cal = Calendar.getInstance();cal.setTime(date);int leapMonth = 0;Date baseDate = null;try {baseDate = chineseDateFormat.parse("1900年1月31日");} catch (ParseException e) {e.printStackTrace();}// 求出和1900年1月31日相差的天数assert baseDate != null;int offset = (int) ((cal.getTime().getTime() - baseDate.getTime()) / 86400000L);int iYear, daysOfYear = 0;for (iYear = 1900; iYear < 2050 && offset > 0; iYear++) {daysOfYear = yearDays(iYear);offset -= daysOfYear;}if (offset < 0) {offset += daysOfYear;iYear--;}// 农历年份chin.nYear = iYear;leapMonth = leapMonth(iYear); // 闰哪个月,1-12chin.runyue = 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) && !chin.runyue) {--iMonth;chin.runyue = true;daysOfMonth = leapDays(chin.nYear);} elsedaysOfMonth = monthDays(chin.nYear, iMonth);offset -= daysOfMonth;// 解除闰月if (chin.runyue && iMonth == (leapMonth + 1))chin.runyue = false;}// 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 (chin.runyue) {chin.runyue = false;} else {chin.runyue = true;--iMonth;}}// offset小于0时，也要校正if (offset < 0) {offset += daysOfMonth;--iMonth;}chin.nMonth = iMonth;chin.nDay = offset + 1;try {chin.nDate = chineseDateFormat.parse(chin.nYear + "年" + chin.nMonth + "月" + chin.nDay + "日");} catch (ParseException e) {e.printStackTrace();}return chin;}// ====== 传回农历 y年的总天数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 0private static int leapMonth(int y) {return (int) (lunarInfo[y - 1900] & 0xf);}// ====== 传回农历 y年m月的总天数private static int monthDays(int y, int m) {if ((lunarInfo[y - 1900] & (0x10000 >> m)) == 0)return 29;elsereturn 30;}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";elsereturn chineseTen[day / 10] + chineseNumber[n + 1];}private String getChinaYearStr() {String yearStr = String.valueOf(nYear);StringBuffer res = new StringBuffer();for (int i = 0; i < yearStr.length(); i++) {char s = yearStr.charAt(i);res.append(chineseNumber[Integer.parseInt(String.valueOf(s))]);}return res.toString();}/*** 获取年月日的中国说法** @return 日期*/public String getChinaString() {return getChinaYearStr() + "年" + (runyue ? "闰" : "") + chineseNumber[nMonth] + "月"+ getChinaDayString(nDay);}/*** 获取阴历的年** @return 年*/public int getChinaYear() {return nYear;}/*** 获取阴历的月** @return 月*/public int getChinaMonth() {return nMonth;}/*** 获取阴历的日** @return 日*/public int getChinaDay() {return nDay;}/*** 获取阴历的生肖** @return 生肖*/public String getChinaZodiac() {return animals[(nYear - 4) % 12];}/*** 获取阳历日期** @return 阳历日期*/public Date getDate() {return date;}/*** 获取阴历日期** @return 阳历日期*/public Date getNDate() {return nDate;}/*** 获取是否为润月中的第二个月** @return 阳历日期*/public boolean isRunyue() {return runyue;}public static void main(String[] args) {ChineseCalendar calendar = ChineseCalendar.as("1995-10-05");System.out.println(calendar.getChinaString());System.out.println(calendar.getChinaYear());System.out.println(calendar.getChinaMonth());System.out.println(calendar.getChinaDay());System.out.println(calendar.getChinaZodiac());System.out.println(DateFormatUtils.format(calendar.getDate(), "yyyy-MM-dd"));System.out.println(DateFormatUtils.format(calendar.getDate(), "yyyy-MM-dd"));System.out.println(calendar.isRunyue());
//System.out.println("====================");ChineseCalendar calendar1 = ChineseCalendar.asChinaDate("1995-08-11", true);System.out.println(calendar1.getChinaString());System.out.println(calendar1.getChinaYear());System.out.println(calendar1.getChinaMonth());System.out.println(calendar1.getChinaDay());System.out.println(calendar1.getChinaZodiac());System.out.println(DateFormatUtils.format(calendar1.getDate(), "yyyy-MM-dd"));System.out.println(DateFormatUtils.format(calendar1.getDate(), "yyyy-MM-dd"));System.out.println(calendar1.isRunyue());}
}

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