JAVA日期处理类
原创
52cxy
04-03 21:20
阅读数：454
包含基本的日期处理函数：
import java.io.*;
import java.util.*;
import java.text.SimpleDateFormat;
import java.text.DateFormat;
import java.text.ParseException;
public class CalendarUtil {
private static SimpleDateFormat sdf = new SimpleDateFormat();
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};
/**
* 返回农历 y年的总天数
*/
final public 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));
}
/**
* 返回农历 y年闰月的天数
*/
final public static int leapDays(int y)
{
if (leapMonth(y) != 0) {
if ((lunarInfo[y - 1900] & 0x10000) != 0)
return 30;
else
return 29;
} else
return 0;
}
/**
* 返回农历 y年闰哪个月 1-12 , 没闰传回 0
*/
final public static int leapMonth(int y)
{
return (int) (lunarInfo[y - 1900] & 0xf);
}
/**
* 返回农历 y年m月的总天数
*/
final public static int monthDays(int y, int m)
{
if ((lunarInfo[y - 1900] & (0x10000 >> m)) == 0)
return 29;
else
return 30;
}
/**
* 返回农历 y年的生肖
*/
final public static String AnimalsYear(int y)
{
final String[] Animals = new String[]{"鼠", "牛", "虎", "兔", "龙", "蛇", "马", "羊", "猴", "鸡", "狗", "猪"};
return Animals[(y - 4) % 12];
}
/**
* 返回干支, 0=甲子
*/
final public static String cyclicalm(int num)
{
final String[] Gan = new String[]{"甲", "乙", "丙", "丁", "戊", "己", "庚", "辛", "壬", "癸"};
final String[] Zhi = new String[]{"子", "丑", "寅", "卯", "辰", "巳", "午", "未", "申", "酉", "戌", "亥"};
return (Gan[num % 10] + Zhi[num % 12]);
}
/**
* 返回干支, 0=甲子
*/
final public static String cyclical(int y)
{
int num = y - 1900 + 36;
return (cyclicalm(num));
}
public static String oracleDate(String inputDate) {
if (inputDate == null || inputDate.equals("")) {
return "";
} else {
String dateFormat = "yyyy-mm-dd hh24:mi:ss";
StringBuffer temp = new StringBuffer();
temp.append("to_date('").append(inputDate).append("','").append(dateFormat)
.append("')");
return temp.toString();
}
}
public static String oracleDateOther(String inputDate) {
if (inputDate == null || inputDate.equals("")) {
return "";
} else {
String dateFormat = "yyyy-mm-dd hh24:mi:ss";
StringBuffer temp = new StringBuffer();
temp.append("to_date('").append(inputDate).append("','").append(dateFormat)
.append("')");
return temp.toString();
}
}
public static Calendar getCalendar() {
Calendar calendar = null;
calendar = Calendar.getInstance();
Date trialTime = new Date();
calendar.setTime(trialTime);
return calendar;
}
/**
* 返回当前年
*/
public static int getYear() {
Calendar calendar = getCalendar();
return calendar.get(Calendar.YEAR);
}
/**
* 返回当前月
*/
public static String getMonth() {
int m = getMonthInt();
String[] months = new String[]{
"1", "2", "3",
"4", "5", "6",
"7", "8", "9",
"10", "11", "12"};
if (m > 12)
return "-1";
return months[m - 1];
}
/**
* 返回当前月
*/
public static int getMonthInt() {
Calendar calendar = getCalendar();
return 1 + calendar.get(Calendar.MONTH);
}
/**
* 返回当前星期，返回值为"1", "2", "3","4", "5", "6","7"之一
*/
public String getDay() {
int x = getDayOfWeek();
String[] days = new String[]{
"1", "2", "3",
"4", "5", "6", "7"};
if (x > 7)
return "-1";
return days[x - 1];
}
/**
* 返回当前日期(建议采用此函数)
*
* @param strDateFormat --日期格式
* @return 指定格式的日期（字符型）,失败则返回null
* 如指定strDateFormat为yyyy-MM-dd，则返回10位日期值
* "yyyy-MM-dd HH:mm:ss" --DateUtil.getDate("yyyy-MM-dd HH:mm:ss")
*/
public final static String getDate(String strDateFormat) {
if (strDateFormat == null) {
return null;
}
java.text.SimpleDateFormat format = new java.text.SimpleDateFormat(strDateFormat);
return format.format(new java.util.Date());
}
/**
* 返回近七天的日期
*/
public final static String[] getOneWeekDates(String currentDay) {
String[] days = new String[7];
Calendar calendar = Calendar.getInstance();
try {
Date date = new SimpleDateFormat("yyyyMMdd").parse(currentDay);
calendar.setTime(date);
calendar.add(GregorianCalendar.DAY_OF_YEAR, -8);
} catch (Exception e) {
e.printStackTrace();
}
for (int i = 7; i > 0; i--) {
calendar.add(GregorianCalendar.DAY_OF_YEAR, 1);
days[7 - i] = new SimpleDateFormat("yyyyMMdd").format(calendar.getTime());
}
return days;
}
/**
* 返回前N天的日期
*/
public final static String getLastNDates(String currentDay,int nDays) {
Calendar calendar = Calendar.getInstance();
try {
Date date = new SimpleDateFormat("yyyyMMdd").parse(currentDay);
calendar.setTime(date);
calendar.add(GregorianCalendar.DAY_OF_YEAR, -(nDays+1));
} catch (Exception e) {
e.printStackTrace();
}
return new SimpleDateFormat("yyyyMMdd").format(calendar.getTime());
}
/**
* 返回当前日期
*
* @return 返回当前日期（字符型）
* 日期格式：月/日/年
*/
public static String getDate() {
return getMonthInt() + "/" + getDayOfMonth() + "/" + getYear();
}
/**
* 返回当前时间
*
* @return 返回当前时间（字符型）
* 日期格式：时：分：秒
*/
public static String getTime() {
return getHour() + ":" + getMinute() + ":" + getSecond();
}
/**
* 返回当前时间是一月中的哪一天
*
* @return 返回当前时间是一月中的哪一天（整型）
*/
public static int getDayOfMonth() {
Calendar calendar = getCalendar();
return calendar.get(Calendar.DAY_OF_MONTH);
}
/**
* 返回当前时间是一年中的哪一天
*
* @return 返回当前时间是一年中的哪一天（整型）
*/
public static int getDayOfYear() {
Calendar calendar = getCalendar();
return calendar.get(Calendar.DAY_OF_YEAR);
}
/**
* 返回当前时间是一年中的哪个星期
*
* @return 返回当前时间是一年中的哪个星期（整型）
*/
public static int getWeekOfYear() {
Calendar calendar = getCalendar();
return calendar.get(Calendar.WEEK_OF_YEAR);
}
/**
* 说明：获取当前时间是一月中的哪个星期
*
* @return 返回当前时间是一月中的哪个星期（整型）
*/
public static int getWeekOfMonth() {
Calendar calendar = getCalendar();
return calendar.get(Calendar.WEEK_OF_MONTH);
}
/**
* 说明：获取当前时间是一周中的哪一天
*
* @return 返回当前时间是一周中的哪一天（整型）
*/
public static int getDayOfWeek() {
Calendar calendar = getCalendar();
return calendar.get(Calendar.DAY_OF_WEEK) - 1;
}
/**
* 返回当前时间的小时数
*
* @return 返回当前时间的小时（整型）
*/
public static int getHour() {
Calendar calendar = getCalendar();
return calendar.get(Calendar.HOUR_OF_DAY);
}
/**
* 返回当前时间的分钟数
*
* @return 返回当前时间的分钟（整型）
*/
public static int getMinute() {
Calendar calendar = getCalendar();
return calendar.get(Calendar.MINUTE);
}
/**
* 返回当前时间的秒数
*
* @return 返回当前时间的秒（整型）
*/
public static int getSecond() {
Calendar calendar = getCalendar();
return calendar.get(Calendar.SECOND);
}
public static int getWeekInt() {
Calendar calendar = getCalendar();
return 1 + calendar.get(Calendar.WEEK_OF_YEAR);
}
final public long[] Lunar(int y, int m)//传出农历.year0 .month1 .day2 .yearCyl3 .monCyl4
// .dayCyl5 .isLeap6
{
final int[] year20 = new int[]{1, 4, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1};
final int[] year19 = new int[]{0, 3, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0};
final int[] year2000 = new int[]{0, 3, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1};
long[] nongDate = new long[7];
int i = 0, temp = 0, leap = 0;
// Date baseDate = new Date(1900, 1, 31);
Date baseDate = new Date();
DateFormat formatter = new SimpleDateFormat("MM/dd/yyyy");
try {
baseDate = (Date) formatter.parse("01/31/1900");
} catch (ParseException e) {
e.printStackTrace();
}
// baseDate.
// Date objDate = new Date(y, m, 1);
Date objDate = new Date();
formatter = new SimpleDateFormat("MM/dd/yyyy");
try {
baseDate = (Date) formatter.parse("01/" + m + "/" + y);
} catch (ParseException e) {
e.printStackTrace();
}
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;
}
final public static long[] calElement(int y, int m, int d)
// 传出y年m月d日对应的农历.year0 .month1 .day2 .yearCyl3 .monCyl4 .dayCyl5 .isLeap6
{
long[] nongDate = new long[7];
int i = 0, temp = 0, leap = 0;
// Date baseDate = new Date(0, 0, 31);
Date baseDate = new Date();
SimpleDateFormat formatter = new SimpleDateFormat("MM/dd/yyyy");
try {
baseDate = (Date) formatter.parse(d + "31/00/00");
} catch (ParseException e) {
e.printStackTrace();
}
// Date objDate = new Date(y - 1900, m - 1, d);
Date objDate = new Date();
try {
objDate = (Date) formatter.parse(d + "/" + (m - 1) + "/" + (y - 1900));
} catch (ParseException e) {
e.printStackTrace();
}
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 static String getchina(int day) {
String a = "";
if (day == 10)
return "初十";
int two = (int) ((day) / 10);
if (two == 0)
a = "初";
if (two == 1)
a = "十";
if (two == 2)
a = "廿";
if (two == 3)
a = "卅";
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 getday(int y, int m, int d) {
String result = "";
long[] l = calElement(y, m, d);
String n = "";//月份
switch ((int) (l[1])) {
case 1:
n = "一";
break;
case 2:
n = "二";
break;
case 3:
n = "三";
break;
case 4:
n = "四";
break;
case 5:
n = "五";
break;
case 6:
n = "六";
break;
case 7:
n = "七";
break;
case 8:
n = "八";
break;
case 9:
n = "九";
break;
case 10:
n = "十";
break;
case 11:
n = "十一";
break;
case 12:
n = "十二";
break;
}
result = getchina((int) l[2]);
if ((int) l[2] == 1) result = n + "月";
return result;
}
// 传出y年m月d日对应的农历.year0 .month1 .day2 .yearCyl3 .monCyl4 .dayCyl5 .isLeap6
public static String run() {
Calendar cld = Calendar.getInstance();
int year = cld.get(Calendar.YEAR);
int month = cld.get(Calendar.MONTH) + 1;
int day = cld.get(Calendar.DAY_OF_MONTH);
String week = "";
long[] l = calElement(year, month, day);
switch (cld.get(Calendar.DAY_OF_WEEK)) {
case 1:
week = "日";
break;
case 2:
week = "一";
break;
case 3:
week = "二";
break;
case 4:
week = "三";
break;
case 5:
week = "四";
break;
case 6:
week = "五";
break;
case 7:
week = "六";
break;
}
String n = "";
switch ((int) (l[1])) {
case 1:
n = "一";
break;
case 2:
n = "二";
break;
case 3:
n = "三";
break;
case 4:
n = "四";
break;
case 5:
n = "五";
break;
case 6:
n = "六";
break;
case 7:
n = "七";
break;
case 8:
n = "八";
break;
case 9:
n = "九";
break;
case 10:
n = "十";
break;
case 11:
n = "十一";
break;
case 12:
n = "十二";
break;
}
String a = "北京时间： " + year + "年" + month + "月" + day + "日<br/>星期" + week + " 农历" + n + "月" + getchina((int) (l[2]));
String b = year + "年" + month + "月" + day + "日 星期" + week + " 农历" + n + "月" + getchina((int) (l[2]));
return b;
}
public static String getFormatDate(String date, String fromFormat, String toFormat) {
String dateStr = "";
try {
dateStr = new SimpleDateFormat(toFormat).format(new SimpleDateFormat(fromFormat).parse(date));
} catch (Exception e) {
e.printStackTrace();
}
return dateStr;
}
public static long getLongTime(String date, String format) {
long dateStr = 0;
try {
dateStr = Long.parseLong(new SimpleDateFormat("yyyymmdd").format(new SimpleDateFormat(format).parse(date)));
} catch (Exception e) {
e.printStackTrace();
}
return dateStr;
}
//或测当前系统日期
public static String getCurrentSystemDate(String toFormat) {
String dateStr = "";
try {
dateStr = new SimpleDateFormat(toFormat).format(new Date());
} catch (Exception e) {
e.printStackTrace();
}
return dateStr;
}
/**
* 将yyyymmdd日期字符串转化为date类型
* @param date yyyymmdd日期字符串
* @return yyyy-mm-dd 日期字符串
*/
public static String getDateString(String date){
System.out.println(date.substring(0,4) + "-" + date.substring(4,6) + "-" + date.substring(6));
return date.substring(0,4) + "-" + date.substring(4,6) + "-" + date.substring(6);
}
/**
* 将date类型转成传入格式的String
* @param date
* @param toFormat
* @return String
*/
public static String getDateStringFormat(Date date,String toFormat) {
if ((date == null) || (toFormat == null || "".equals(toFormat))){
return "";
}
return new SimpleDateFormat(toFormat).format(date);
}
/**
* 将String转换成Date
* @param date
* @param dateFormat
* @return Date
* @throws ParseException
*/
public static Date getDateFormat(String date,String dateFormat) throws ParseException {
if ((date == null) || "".equals(date) || (dateFormat == null || "".equals(dateFormat))){
return new Date();
}
DateFormat formatter = new SimpleDateFormat(dateFormat);
return formatter.parse(date);
}
/**
@param date
@param pattern
@return String
*/
public static synchronized String getDateFormat(java.util.Date date,
String pattern) {
synchronized (sdf) {
String str = null;
sdf.applyPattern(pattern);
str = sdf.format(date);
return str;
}
}
/**
@param strDate
@param pattern
@return java.util.Date
*/
public static synchronized Date parseDateFormat(String strDate,
String pattern) {
synchronized (sdf) {
Date date = null;
sdf.applyPattern(pattern);
try {
date = sdf.parse(strDate);
} catch (Exception e) {
}
return date;
}
}
/**
*added by wang on 07/02/02
@param strDate 输入的字符串日期
@param patternInput 输入格式
@param pattenOutput 期待输出的格式
@return
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