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/**
*工具类，实现阴阳历互转
*
*@authorluohao
*/
publicclassLunarCalar{
/**
*支持转换的最小农历年份
*/
publicstaticfinalintMIN_YEAR=1900;
/**
*支持转换的最大农历年份
*/
publicstaticfinalintMAX_YEAR=2099;
/**
*公历每月前的天数
*/
privatestaticfinalint[]DAYS_BEFORE_MONTH={0,31,59,90,120,151,181,212,243,273,304,334,365};
/**
*用来表示1900年到2099年间农历年份的相关信息，共24位bit的16进制表示，其中：
*1.前4位表示该年闰哪个月；
*2.5-17位表示农历年份13个月的大小月分布，0表示小，1表示大；
*3.最后7位表示农历年首（正月初一）对应的公历日期。
*以2014年的数据0x955ABF为例说明：
*100101010101101010111111
*闰九月农历正月初一对应公历1月31号
*/
privatestaticfinalint[]LUNAR_INFO={
/*1900*/
0x84B6BF,
/*1901-1910*/
0x04AE53,0x0A5748,0x5526BD,0x0D2650,0x0D9544,0x46AAB9,0x056A4D,0x09AD42,0x24AEB6,0x04AE4A,
/*1911-1920*/
0x6A4DBE,0x0A4D52,0x0D2546,0x5D52BA,0x0B544E,0x0D6A43,0x296D37,0x095B4B,0x749BC1,0x049754,
/*1921-1930*/
0x0A4B48,0x5B25BC,0x06A550,0x06D445,0x4ADAB8,0x02B64D,0x095742,0x2497B7,0x04974A,0x664B3E,
/*1931-1940*/
0x0D4A51,0x0EA546,0x56D4BA,0x05AD4E,0x02B644,0x393738,0x092E4B,0x7C96BF,0x0C9553,0x0D4A48,
/*1941-1950*/
0x6DA53B,0x0B554F,0x056A45,0x4AADB9,0x025D4D,0x092D42,0x2C95B6,0x0A954A,0x7B4ABD,0x06CA51,
/*1951-1960*/
0x0B5546,0x555ABB,0x04DA4E,0x0A5B43,0x352BB8,0x052B4C,0x8A953F,0x0E9552,0x06AA48,0x6AD53C,
/*1961-1970*/
0x0AB54F,0x04B645,0x4A5739,0x0A574D,0x052642,0x3E9335,0x0D9549,0x75AABE,0x056A51,0x096D46,
/*1971-1980*/
0x54AEBB,0x04AD4F,0x0A4D43,0x4D26B7,0x0D254B,0x8D52BF,0x0B5452,0x0B6A47,0x696D3C,0x095B50,
/*1981-1990*/
0x049B45,0x4A4BB9,0x0A4B4D,0xAB25C2,0x06A554,0x06D449,0x6ADA3D,0x0AB651,0x095746,0x5497BB,
/*1991-2000*/
0x04974F,0x064B44,0x36A537,0x0EA54A,0x86B2BF,0x05AC53,0x0AB647,0x5936BC,0x092E50,0x0C9645,
/*2001-2010*/
0x4D4AB8,0x0D4A4C,0x0DA541,0x25AAB6,0x056A49,0x7AADBD,0x025D52,0x092D47,0x5C95BA,0x0A954E,
/*2011-2020*/
0x0B4A43,0x4B5537,0x0AD54A,0x955ABF,0x04BA53,0x0A5B48,0x652BBC,0x052B50,0x0A9345,0x474AB9,
/*2021-2030*/
0x06AA4C,0x0AD541,0x24DAB6,0x04B64A,0x6a573D,0x0A4E51,0x0D2646,0x5E933A,0x0D534D,0x05AA43,
/*2031-2040*/
0x36B537,0x096D4B,0xB4AEBF,0x04AD53,0x0A4D48,0x6D25BC,0x0D254F,0x0D5244,0x5DAA38,0x0B5A4C,
/*2041-2050*/
0x056D41,0x24ADB6,0x049B4A,0x7A4BBE,0x0A4B51,0x0AA546,0x5B52BA,0x06D24E,0x0ADA42,0x355B37,
/*2051-2060*/
0x09374B,0x8497C1,0x049753,0x064B48,0x66A53C,0x0EA54F,0x06AA44,0x4AB638,0x0AAE4C,0x092E42,
/*2061-2070*/
0x3C9735,0x0C9649,0x7D4ABD,0x0D4A51,0x0DA545,0x55AABA,0x056A4E,0x0A6D43,0x452EB7,0x052D4B,
/*2071-2080*/
0x8A95BF,0x0A9553,0x0B4A47,0x6B553B,0x0AD54F,0x055A45,0x4A5D38,0x0A5B4C,0x052B42,0x3A93B6,
/*2081-2090*/
0x069349,0x7729BD,0x06AA51,0x0AD546,0x54DABA,0x04B64E,0x0A5743,0x452738,0x0D264A,0x8E933E,
/*2091-2099*/
0x0D5252,0x0DAA47,0x66B53B,0x056D4F,0x04AE45,0x4A4EB9,0x0A4D4C,0x0D1541,0x2D92B5
};
/**
*将农历日期转换为公历日期
*
*@paramyear农历年份
*@parammonth农历月
*@parammonthDay农历日
*@paramisLeapMonth该月是否是闰月
*@return返回农历日期对应的公历日期，year0,month1,day2.
*/
publicstaticfinalint[]lunarToSolar(intyear,intmonth,intmonthDay,booleanisLeapMonth){
intdayOffset;
intleapMonth;
inti;
if(yearMIN_YEAR||yearMAX_YEAR||month1||month12
||monthDay1||monthDay30){
thrownewIllegalArgumentException(
"Illegallunardate,mustbelikethat:\n\t"+
"year:1900~2099\n\t"+
"month:1~12\n\t"+
"day:1~30");
}
dayOffset=(LUNAR_INFO[year-MIN_YEAR]0x001F)-1;
if(((LUNAR_INFO[year-MIN_YEAR]0x0060)5)==2){
dayOffset+=31;
}
for(i=1;imonth;i++){
if((LUNAR_INFO[year-MIN_YEAR](0x80000(i-1)))==0){
dayOffset+=29;
}else{
dayOffset+=30;
}
}
dayOffset+=monthDay;
leapMonth=(LUNAR_INFO[year-MIN_YEAR]0xf00000)20;
//这一年有闰月
if(leapMonth!=0){
if(monthleapMonth||(month==leapMonthisLeapMonth)){
if((LUNAR_INFO[year-MIN_YEAR](0x80000(month-1)))==0){
dayOffset+=29;
}else{
dayOffset+=30;
}
}
}
if(dayOffset366||(year%4!=0dayOffset365)){
year+=1;
if(year%4==1){
dayOffset-=366;
}else{
dayOffset-=365;
}
}
int[]solarInfo=newint[3];
for(i=1;i13;i++){
intiPos=DAYS_BEFORE_MONTH[i];
if(year%4==0i2){
iPos+=1;
}
if(year%4==0i==2iPos+1==dayOffset){
solarInfo[1]=i;
solarInfo[2]=dayOffset-31;
break;
}
if(iPos=dayOffset){
solarInfo[1]=i;
iPos=DAYS_BEFORE_MONTH[i-1];
if(year%4==0i2){
iPos+=1;
}
if(dayOffsetiPos){
solarInfo[2]=dayOffset-iPos;
}elseif(dayOffset==iPos){
if(year%4==0i==2){
solarInfo[2]=DAYS_BEFORE_MONTH[i]-DAYS_BEFORE_MONTH[i-1]+1;
}else{
solarInfo[2]=DAYS_BEFORE_MONTH[i]-DAYS_BEFORE_MONTH[i-1];
}
}else{
solarInfo[2]=dayOffset;
}
break;
}
}
solarInfo[0]=year;
returnsolarInfo;
}
/**
*将公历日期转换为农历日期，且标识是否是闰月
*
*@paramyear
*@parammonth
*@parammonthDay
*@return返回公历日期对应的农历日期，year0，month1，day2，leap3
*/
publicstaticfinalint[]solarToLunar(intyear,intmonth,intmonthDay){
int[]lunarDate=newint[4];
DatebaseDate=newGregorianCalar(1900,0,31).getTime();
DateobjDate=newGregorianCalar(year,month-1,monthDay).getTime();
intoffset=(int)((()-())/86400000L);
//用offset减去每农历年的天数计算当天是农历第几天
//iYear最终结果是农历的年份,offset是当年的第几天
intiYear,daysOfYear=0;
for(iYear=MIN_YEAR;iYear=MAX_YEARoffset0;iYear++){
daysOfYear=daysInLunarYear(iYear);
offset-=daysOfYear;
}
if(offset0){
offset+=daysOfYear;
iYear--;
}
//农历年份
lunarDate[0]=iYear;
intleapMonth=leapMonth(iYear);
//闰哪个月,1-12
booleanisLeap=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
intiMonth,daysOfMonth=0;
for(iMonth=1;iMonth=13offset0;iMonth++){
daysOfMonth=daysInLunarMonth(iYear,iMonth);
offset-=daysOfMonth;
}
//当前月超过闰月，要校正
if(leapMonth!=0iMonthleapMonth){
--iMonth;
if(iMonth==leapMonth){
isLeap=true;
}
}
//offset小于0时，也要校正
if(offset0){
offset+=daysOfMonth;
--iMonth;
}
lunarDate[1]=iMonth;
lunarDate[2]=offset+1;
lunarDate[3]=isLeap?1:0;
returnlunarDate;
}
/**
*传回农历year年month月的总天数
*
*@paramyear要计算的年份
*@parammonth要计算的月
*@return传回天数
*/
finalpublicstaticintdaysInMonth(intyear,intmonth){
returndaysInMonth(year,month,false);
}
/**
*传回农历year年month月的总天数
*
*@paramyear要计算的年份
*@parammonth要计算的月
*@paramleap当月是否是闰月
*@return传回天数，如果闰月是错误的，返回0.
*/
publicstaticfinalintdaysInMonth(intyear,intmonth,booleanleap){
intleapMonth=leapMonth(year);
intoffset=0;
//如果本年有闰月且month大于闰月时，需要校正
if(leapMonth!=0monthleapMonth){
offset=1;
}
//不考虑闰月
if(!leap){
returndaysInLunarMonth(year,month+offset);
}else{
//传入的闰月是正确的月份
if(leapMonth!=0leapMonth==month){
returndaysInLunarMonth(year,month+1);
}
}
return0;
}
/**
*传回农历year年的总天数
*
*@paramyear将要计算的年份
*@return返回传入年份的总天数
*/
privatestaticintdaysInLunarYear(intyear){
inti,sum=348;
if(leapMonth(year)!=0){
sum=377;
}
intmonthInfo=LUNAR_INFO[year-MIN_YEAR]0x0FFF80;
for(i=0x80000;i0x7;i=1){
if((monthInfoi)!=0){
sum+=1;
}
}
returnsum;
}
/**
*传回农历year年month月的总天数，总共有13个月包括闰月
*
*@paramyear将要计算的年份
*@parammonth将要计算的月份
*@return传回农历year年month月的总天数
*/
privatestaticintdaysInLunarMonth(intyear,intmonth){
if((LUNAR_INFO[year-MIN_YEAR](0x100000month))==0){
return29;
}else{
return30;
}
}
/**
*传回农历year年闰哪个月1-12,没闰传回0
*
*@paramyear将要计算的年份
*@return传回农历year年闰哪个月1-12,没闰传回0
*/
privatestaticintleapMonth(intyear){
return((LUNAR_INFO[year-MIN_YEAR]0xF00000))20;
}
publicstaticvoidmain(String[]args){
((solarToLunar(2019,4,4)));
}
}
