Java日期时间API系列11-----Jdk8中java.time包中的新的日期时间API类，使用java8日期时间API重写农历LunarDate

　　通过java日期时间api系列7-----jdk8中java.time包中的新的日期时间api类的优点，java8具有很多优点，现在网上查到的农历转换工具类都是基于jdk7及以前的类写的，下面使用java新的日期时间api重写农历lunardate。

package com.xkzhangsan.time;

import java.time.instant;
import java.time.localdate;
import java.time.localdatetime;
import java.util.date;

import com.xkzhangsan.time.converter.datetimeconverterutil;

/**
 * 农历日期
* @classname: lunardate 
* @description: lunardate
* @author xkzhangsan
* @date 2019年12月30日
* @version 0.1 ，初版，谨慎试用
 */
public final class lunardate {
    
    /**
     * 农历信息
     */
    private static final 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 };

    /**
     * 农历月份列表
     */
    public static final string[] lunarmonth = new string[] { "", "正", "二", "三", "四", "五", "六", "七", "八", "九", "十", "冬",
            "腊" };
    /**
     * 天干列表
     */
    private static final string[] tiangan = new string[] { "甲", "乙", "丙", "丁", "戊", "己", "庚", "辛", "壬", "癸" };

    /**
     * 地支列表
     */
    private static final string[] dizhi = new string[] { "子", "丑", "寅", "卯", "辰", "巳", "午", "未", "申", "酉", "戌", "亥" };

    /**
     * 生肖列表
     */
    private static final string[] animals = new string[] { "鼠", "牛", "虎", "兔", "龙", "蛇", "马", "羊", "猴", "鸡", "狗", "猪" };

    /**
     * 中文数字0-9
     */
    public static final string[] numstr = new string[] { "〇", "一", "二", "三", "四", "五", "六", "七", "八", "九"};    

    /**
     * 标准日期
     */
    private final localdate localdate;

    /**
     * 农历日期，中文
     */
    private string ldatecn;

    /**
     * 岁次
     */
    private string suici;

    /**
     * 生肖
     */
    private string lanimal;

    /**
     * 农历年
     */
    private int lyear;

    /**
     * 农历月
     */
    private int lmonth;

    /**
     * 农历日
     */
    private int lday;

    /**
     * 农历年，中文
     */
    private string lyearcn;

    /**
     * 农历月，中文
     */
    private string lmonthcn;

    /**
     * 农历日，中文
     */
    private string ldaycn;

    /**
     * 星期，中文
     */
    private string weekcn;

    private lunardate(localdate localdate) {
        super();
        this.localdate = localdate;
        initialize();
    }
    
    /**
     * 初始化农历日期
     */
    public void initialize() {
        int year = localdate.getyear();
        int month = localdate.getmonthvalue();
        int day = localdate.getdayofmonth();
        long[] l = calelement(year, month, day);
        
        this.suici = cyclical(year);
        this.lanimal = animalsyear(year);

        this.lyear = (int) l[0];
        this.lmonth = (int) l[1];
        this.lday = (int) l[2];

        this.lyearcn = getchinayear(this.lyear);
        this.lmonthcn = lunarmonth[this.lmonth];
        this.ldaycn = getchinaday(this.lday);

        this.weekcn = getweekcn(localdate.getdayofweek().getvalue());
        this.ldatecn = this.lyearcn + "年" + this.lmonthcn + "月" + this.ldaycn;
    }
    
    /**
     * 通过localdatetime创建lunardate
     * @param localdatetime
     * @return
     */
    public static lunardate from(localdatetime localdatetime) {
        return new lunardate(datetimeconverterutil.tolocaldate(localdatetime));
    }

    /**
     * 通过localdate创建lunardate
     * @param localdate
     * @return
     */
    public static lunardate from(localdate localdate) {
        return new lunardate(localdate);
    }
    
    /**
     * 通过instant创建lunardate
     * @param localdate
     * @return
     */
    public static lunardate from(instant instant) {
        return new lunardate(datetimeconverterutil.tolocaldate(instant));
    }    

    /**
     * 通过date创建lunardate
     * @param date
     * @return
     */
    public static lunardate from(date date) {
        return new lunardate(datetimeconverterutil.tolocaldate(date));
    }

    /**
     * 传回农历year年的总天数
     *
     * @param year
     * @return
     */
    private static final int lunaryeardays(int year) {
        int i, sum = 348;
        for (i = 0x8000; i > 0x8; i >>= 1) {
            if ((lunarinfo[year - 1900] & i) != 0)
                sum += 1;
        }
        return (sum + leapmonthdays(year));
    }

    /**
     * 传回农历 year年闰月的天数
     *
     * @param year
     * @return
     */
    private static final int leapmonthdays(int year) {
        if (leapmonth(year) != 0) {
            if ((lunarinfo[year - 1900] & 0x10000) != 0)
                return 30;
            else
                return 29;
        } else
            return 0;
    }

    /**
     * 传回农历 year年闰哪个月 1-12 , 没闰传回 0
     *
     * @param year
     * @return
     */
    private static final int leapmonth(int year) {
        return (int) (lunarinfo[year - 1900] & 0xf);
    }

    /**
     * 传回农历 year年month月的总天数
     *
     * @param year
     * @param month
     * @return
     */
    private static final int monthdays(int year, int month) {
        if ((lunarinfo[year - 1900] & (0x10000 >> month)) == 0)
            return 29;
        else
            return 30;
    }

    /**
     * 传回农历 year年的生肖
     *
     * @param year
     * @return
     */
    public static final string animalsyear(int year) {
        return animals[(year - 4) % 12];
    }

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

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

    /**
     * 传出year年month月day日对应的农历.year0 .month1 .day2 .yearcyl3 .moncyl4 .daycyl5
     * .isleap6
     *
     * @param year
     * @param month
     * @param day
     * @return
     */
    public static final long[] calelement(int year, int month, int day) {
        long[] nongdate = new long[7];
        int i = 0, temp = 0, leap = 0;
        localdate basedate = localdate.of(0 + 1900, 1, 31);
        localdate objdate = localdate.of(year, month, day);
        long offset = (datetimeconverterutil.toepochmilli(objdate) - datetimeconverterutil.toepochmilli(basedate))
                / 86400000l;
        nongdate[5] = offset + 40;
        nongdate[4] = 14;
        for (i = 1900; i < 2050 && offset > 0; i++) {
            temp = lunaryeardays(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 = leapmonthdays((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 getchinayear(int year) {
        string ge = numstr[year % 10];
        string shi = numstr[year / 10 % 10];
        string bai = numstr[year / 100 % 10];
        string qian = numstr[year / 1000 % 10];
        return qian + bai + shi + ge;
    }

    public final static string getchinaday(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;
        default:
            a += "";
            break;
        }
        return a;
    }
    
    public final static string getweekcn(int week) {
        string weekcn = "";
        switch (week) {
        case 1:
            weekcn = "星期一";
            break;
        case 2:
            weekcn = "星期二";
            break;
        case 3:
            weekcn = "星期三";
            break;
        case 4:
            weekcn = "星期四";
            break;
        case 5:
            weekcn = "星期五";
            break;
        case 6:
            weekcn = "星期六";
            break;
        case 7:
            weekcn = "星期日";
            break;
        default:
            weekcn = "";
            break;
        }
        return weekcn;
    }

    public static lunardate today() {
        localdate today = localdate.now();
        return new lunardate(today);
    }

    public localdate getlocaldate() {
        return localdate;
    }

    public string getdatecn() {
        return ldatecn;
    }

    public string getsuici() {
        return suici;
    }

    public string getlanimalcn() {
        return lanimal;
    }

    public int getlyear() {
        return lyear;
    }

    public int getlmonth() {
        return lmonth;
    }

    public int getlday() {
        return lday;
    }

    public string getlyearcn() {
        return lyearcn;
    }

    public string getlmonthcn() {
        return lmonthcn;
    }

    public string getldaycn() {
        return ldaycn;
    }

    public string getweekcn() {
        return weekcn;
    }

    @override
    public string tostring() {
        return "lunardate [localdate=" + localdate + ",ldatecn=" + ldatecn + ", suici=" + suici + ", lanimal=" + lanimal + ", lyear=" + lyear
                + ", lmonth=" + lmonth + ", lday=" + lday + ", lyearcn=" + lyearcn + ", lmonthcn=" + lmonthcn
                + ", ldaycn=" + ldaycn + ", weekcn=" + weekcn + "]";
    }


    public static void main(string[] args) {
        string str =lunardate.today().tostring();
        system.out.println(str);
    }
}

 

输出为：

lunardate [localdate=2019-12-30,ldatecn=二〇一九年腊月初五, suici=己亥, lanimal=猪, lyear=2019, lmonth=12, lday=5, lyearcn=二〇一九, lmonthcn=腊, ldaycn=初五, weekcn=星期一]

 

农历原始算法来自网络。

 

源码地址：