import java.text.DateFormat;
import java.text.DateFormatSymbols;
import java.text.FieldPosition;
import java.text.Format;
import java.text.ParseException;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.TimeZone;
import com.icos.utility.string.StringUtil;
import org.apache.log4j.Logger;
public class DateUtils {
/**
* 常量空值
*/
static final String EMPTY = ""; // 空值
/**
* 年月日时分秒
*/
static final FastDateFormat ISO_DATETIME_FORMAT = FastDateFormat
.getInstance("yyyy-MM-dd HH:mm:ss");
/**
* 年月日时分秒毫秒
*/
static final FastDateFormat ISO_DATETIME_TIME_ZONE_FORMAT = FastDateFormat
.getInstance("yyyy-MM-dd HH:mm:ssZZ");
/**
* 年月日
*/
static final FastDateFormat ISO_DATE_FORMAT = FastDateFormat
.getInstance("yyyy-MM-dd");
/**
* 年月日
*/
static final FastDateFormat ISODATEFORMAT = FastDateFormat
.getInstance("yyyyMMdd");
/**
* 年月日，毫秒
*/
static final FastDateFormat ISO_DATE_TIME_ZONE_FORMAT = FastDateFormat
.getInstance("yyyy-MM-ddZZ");
/**
* 时分秒
*/
static final FastDateFormat ISO_TIME_FORMAT = FastDateFormat
.getInstance("HH:mm:ss");
/**
* 时分秒，毫秒
*/
static final FastDateFormat ISO_TIME_TIME_ZONE_FORMAT = FastDateFormat
.getInstance("HH:mm:ssZZ");
/**
* 时分秒
*/
static final FastDateFormat ISO_TIME_NO_T_FORMAT = FastDateFormat
.getInstance("HH:mm:ss");
/**
* 时分秒，毫秒
*/
static final FastDateFormat ISO_TIME_NO_T_TIME_ZONE_FORMAT = FastDateFormat
.getInstance("HH:mm:ssZZ");
/**
* 国际化的年月日，时分秒
*/
static final FastDateFormat SMTP_DATETIME_FORMAT = FastDateFormat
.getInstance("EEE, dd MMM yyyy HH:mm:ss Z", Locale.US);
static Logger logger = Logger.getLogger(DateUtils.class);
/**
* 功能描述： 根据毫秒数，和时间格式，得到一个时间字符串
*
* @param millis
* long类型的毫秒数
* @param pattern
* 字符串的时间格式
* @return String 时间字符串
* @author daixl
* @since 2011.02.23
*/
public static String format(long millis, String pattern) {
return format(new Date(millis), pattern, null, null);
}
/**
* 功能描述： 根据Date对象，和时间格式，得到一个时间字符串
*
* @param date
* 一个Date对象
* @param pattern
* 字符串的时间格式
* @return String 时间字符串
* @author daixl
* @since 2011.02.23
*/
public static String format(Date date, String pattern) {
return format(date, pattern, null, null);
}
/**
* 功能描述： 根据Calendar对象，和时间格式，得到一个时间字符串
*
* @param calendar
* 一个Calendar对象
* @param pattern
* 字符串的时间格式
* @return String 时间字符串
* @author daixl
* @since 2011.02.23
*/
public static String format(Calendar calendar, String pattern) {
return format(calendar, pattern, null, null);
}
/**
* 功能描述： 根据毫秒数，和时间格式，得到一个时间字符串
*
* @param millis
* long类型的毫秒数
* @param pattern
* 字符串的时间格式
* @param timeZone
* TimeZone对象
* @return String 时间字符串
* @author daixl
* @since 2011.02.23
*/
public static String format(long millis, String pattern, TimeZone timeZone) {
return format(new Date(millis), pattern, timeZone, null);
}
/**
* 功能描述： 根据 Date 对象，和时间格式，得到一个时间字符串
*
* @param date
* 一个Date对象
* @param pattern
* 字符串的时间格式
* @param timeZone
* TimeZone对象
* @return String 时间字符串
* @since 2011.02.23
*/
public static String format(Date date, String pattern, TimeZone timeZone) {
return format(date, pattern, timeZone, null);
}
/**
* 功能描述： 根据Calendar对象，和时间格式，得到一个时间字符串
*
* @param calendar
* 一个Calendar对象
* @param pattern
* 字符串的时间格式
* @param timeZone
* TimeZone对象
* @return String 时间字符串
* @author daixl
* @since 2011.02.23
*/
public static String format(Calendar calendar, String pattern,
TimeZone timeZone) {
return format(calendar, pattern, timeZone, null);
}
/**
* 功能描述： 根据毫秒数，和时间格式，得到一个时间字符串
*
* @param millis
* long类型的毫秒数
* @param pattern
* 字符串的时间格式
* @param locale
* locale对象
* @return String 时间字符串
* @author daixl
* @since 2011.02.23
*/
public static String format(long millis, String pattern, Locale locale) {
return format(new Date(millis), pattern, null, locale);
}
/**
* 功能描述： 根据 Date 对象，和时间格式，得到一个时间字符串
*
* @param pattern
* 字符串的时间格式
* @param locale
* Locale对象
* @return String 时间字符串
* @author daixl
* @since 2011.02.23
*/
public static String format(Date date, String pattern, Locale locale) {
return format(date, pattern, null, locale);
}
/**
* 功能描述： 根据 Calendar 对象，和时间格式，得到一个时间字符串
*
* @param calendar
* Calendar对象
* @param pattern
* 字符串的时间格式
* @param locale
* Locale对象
* @return String 时间字符串
* @author daixl
* @since 2011.02.23
*/
public static String format(Calendar calendar, String pattern, Locale locale) {
return format(calendar, pattern, null, locale);
}
/**
* 功能描述： 根据毫秒数，和时间格式，得到一个时间字符串
*
* @param millis
* long类型的毫秒数
* @param pattern
* 字符串的时间格式
* @param locale
* Locale对象
* @param timeZone
* TimeZone对象
* @return String 时间字符串
* @author daixl
* @since 2011.02.23
*/
public static String format(long millis, String pattern, TimeZone timeZone,
Locale locale) {
return format(new Date(millis), pattern, timeZone, locale);
}
/**
* 功能描述： 根据 Date 对象，和时间格式，得到一个时间字符串
*
* @param date
* Date对象
* @param pattern
* 字符串的时间格式
* @param timeZone
* TimeZone对象
* @param locale
* Locale对象
* @return String 时间字符串
* @author daixl
* @since 2011.02.23
*/
public static String format(Date date, String pattern, TimeZone timeZone,
Locale locale) {
FastDateFormat df = FastDateFormat.getInstance(pattern, timeZone,
locale);
return df.format(date);
}
/**
* 功能描述： 根据 Date 对象，和时间格式，得到一个时间字符串
*
* @param calendar
* calendar对象
* @param pattern
* 字符串的时间格式
* @param timeZone
* TimeZone对象
* @param locale
* Locale对象
* @return String 时间字符串
* @author daixl
* @since 2011.02.23
*/
public static String format(Calendar calendar, String pattern,
TimeZone timeZone, Locale locale) {
FastDateFormat df = FastDateFormat.getInstance(pattern, timeZone,
locale);
return df.format(calendar);
}
/**
* 功能描述：比较２个Date类型的时间是否是同一天
*
* @param date1
* 第一个Date对象，
* @param date2
* 第二个Date对象
* @return boolean 布尔值
* @author daixl
* @since 2011.02.24
*/
public static boolean isSameDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isSameDay(cal1, cal2);
}
/**
* 功能描述：比较２个Calendar类型的时间是否是同一天
*
* @param cal1
* 第一个Calendar对象，
* @param cal2
* 第二个Calendar对象，
* @return boolean 布尔值
* @author daixl
* @since 2011.02.24
*/
public static boolean isSameDay(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The date must not be null");
}
return (cal1.get(Calendar.ERA) == cal2.get(Calendar.ERA)
&& cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR) && cal1
.get(Calendar.DAY_OF_YEAR) == cal2
.get(Calendar.DAY_OF_YEAR));
}
/**
* 功能描述：比较２个Date类型的时间是否是同一个对象
*
* @param date1
* 第一个Date对象，
* @param date2
* 第二个Date对象
* @return boolean 布尔值
* @author daixl
* @since 2011.02.24
*/
public static boolean isSameInstant(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The date must not be null");
}
return date1.getTime() == date2.getTime();
}
/**
* 功能描述：比较２个Calendar类型的是否是同一个对象
*
* @param cal1
* 第一个Calendar对象，
* @param cal2
* 第二个Calendar对象，
* @return boolean 布尔值
* @author daixl
* @since 2011.02.24
*/
public static boolean isSameInstant(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The date must not be null");
}
return cal1.getTime().getTime() == cal2.getTime().getTime();
}
/**
* 功能描述：给定一个日期和一个数值，增加它的年
*
* @param date
* Date对象
* @param amount
* int类型
* @return Date Date对象
* @author daixl
* @since 2011.02.24
*/
public static Date addYears(Date date, int amount) {
return add(date, Calendar.YEAR, amount);
}
/**
* 功能描述：给定一个日期和一个数值，增加它的月
*
* @param date
* Date对象
* @param amount
* int类型
* @return Date Date对象
* @author daixl
* @since 2011.02.24
*/
public static Date addMonths(Date date, int amount) {
return add(date, Calendar.MONTH, amount);
}
/**
* 功能描述：给定一个日期和一个数值，增加它的星期
*
* @param date
* Date对象
* @param amount
* int类型
* @return Date Date对象
* @author daixl
* @since 2011.02.24
*/
public static Date addWeeks(Date date, int amount) {
return add(date, Calendar.WEEK_OF_YEAR, amount);
}
/**
* 功能描述：给定一个日期和一个数值，增加它的天
*
* @param date
* Date对象
* @param amount
* int类型
* @return Date Date对象
* @author daixl
* @since 2011.02.24
*/
public static Date addDays(Date date, int amount) {
return add(date, Calendar.DAY_OF_MONTH, amount);
}
/**
* 功能描述：给定一个日期和一个数值，增加它的小时
*
* @param date
* Date对象
* @param amount
* int类型
* @return Date Date对象
* @author daixl
* @since 2011.02.24
*/
public static Date addHours(Date date, int amount) {
return add(date, Calendar.HOUR_OF_DAY, amount);
}
/**
* 功能描述：给定一个日期和一个数值，增加它的分钟数
*
* @param date
* Date对象
* @param amount
* int类型
* @return Date Date对象
* @author daixl
* @since 2011.02.24
*/
public static Date addMinutes(Date date, int amount) {
return add(date, Calendar.MINUTE, amount);
}
/**
* 功能描述：给定一个日期和一个数值，增加它的秒数
*
* @param date
* Date对象
* @param amount
* int类型
* @return Date Date对象
* @author daixl
* @since 2011.02.24
*/
public static Date addSeconds(Date date, int amount) {
return add(date, Calendar.SECOND, amount);
}
public static String getLastTimeString(int value, int count, String format) {
long val = getTimeinteger() / value;
val = (val - count) * value;
return format(val, format);
}
/**
* 功能描述：获得前一天的日期字符串
*
* @param date
* Date对象
* @param amount
* int类型
* @return Date Date对象
* @since 2016.04.07
*/
public static String getLastTimeString(int count, String pattern) {
String strDate = getYmdStr(getDateAfterDays(new Date(), count), pattern);
return strDate;
}
/**
* 功能描述：给定一个日期和一个数值，增加它的毫秒数
*
* @param date
* Date对象
* @param amount
* int类型
* @return Date Date对象
* @since 2011.02.24
*/
public static Date addMilliseconds(Date date, int amount) {
return add(date, Calendar.MILLISECOND, amount);
}
/**
* 功能描述：给定一个日期和2个数值，返回计算后的日期
*
* @param date
* Date对象
* @param calendarField
* int类型
* @param amount
* int类型
* @return Date Date对象
* @since 2011.02.24
*/
private static Date add(Date date, int calendarField, int amount) {
if (date == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar c = Calendar.getInstance();
c.setTime(date);
c.add(calendarField, amount);
return c.getTime();
}
/**
* @param value
* @return
*/
public static String getString(Object value) {
if (value instanceof Date) {
return ((Date) value).toString();
} else {
return value == null ? "" : value.toString();
}
}
/**
* 功能描述：给定一个日期和一个数值，修改它的年份
*
* @param date
* Date对象
* @param amount
* int类型
* @return Date Date对象
*/
public static Date setYears(Date date, int amount) {
return set(date, Calendar.YEAR, amount);
}
/**
* 功能描述：给定一个日期和一个数值，修改它的月份
*
* @param date
* Date对象
* @param amount
* int类型
* @return Date Date对象
* @author daixl
* @since 2011.02.24
*/
public static Date setMonths(Date date, int amount) {
return set(date, Calendar.MONTH, amount);
}
/**
* 功能描述：给定一个日期和一个数值，修改它的天
*
* @param date
* Date对象
* @param amount
* int类型
* @return Date Date对象
*/
public static Date setDays(Date date, int amount) {
return set(date, Calendar.DAY_OF_MONTH, amount);
}
/**
* 功能描述：给定一个日期和一个数值，修改它的下小时
*
* @param date
* Date对象
* @param amount
* int类型
* @return Date Date对象
* @author daixl
* @since 2011.02.24
*/
public static Date setHours(Date date, int amount) {
return set(date, Calendar.HOUR_OF_DAY, amount);
}
/**
* 功能描述：给定一个日期和一个数值，修改它的分钟
*
* @param date
* Date对象
* @param amount
* int类型
* @return Date Date对象
* @author daixl
* @since 2011.02.24
*/
public static Date setMinutes(Date date, int amount) {
return set(date, Calendar.MINUTE, amount);
}
/**
* 功能描述：给定一个日期和一个数值，修改它的秒
*
* @param date
* Date对象
* @param amount
* int类型
* @return Date Date对象
* @since 2011.02.24
*/
public static Date setSeconds(Date date, int amount) {
return set(date, Calendar.SECOND, amount);
}
/**
* 功能描述：给定一个日期和一个数值，修改它的毫秒
*
* @param date
* Date对象
* @param amount
* int类型
* @return Date Date对象
* @since 2011.02.24
*/
public static Date setMilliseconds(Date date, int amount) {
return set(date, Calendar.MILLISECOND, amount);
}
/**
* 功能描述：给定一个日期和2个数值，返回修改后的Date
*
* @param date
* Date对象
* @param calendarField
* int类型
* @param amount
* int类型
* @return Date Date对象
* @since 2011.02.24
*/
private static Date set(Date date, int calendarField, int amount) {
if (date == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar c = Calendar.getInstance();
c.setLenient(false);
c.setTime(date);
c.set(calendarField, amount);
return c.getTime();
}
/**
* 功能描述：给定一个Date日期，返回一个Calendar对象
*
* @param date
* Date对象
* @return Calendar Calendar对象
* @since 2011.02.24
*/
public static Calendar toCalendar(Date date) {
Calendar c = Calendar.getInstance();
c.setTime(date);
return c;
}
public static int getMinute() {
return getMinute(currentDate());
}
public static int getHour() {
return getHour(currentDate());
}
public static int getDay() {
return getDay(currentDate());
}
public static int getMonth() {
return getMonth(currentDate());
}
public static int getYear() {
return getYear(currentDate());
}
public static int getWeekOfYear(Date date) {
Calendar cal = new GregorianCalendar();
cal.setTime(date);
return (cal.get(GregorianCalendar.WEEK_OF_YEAR) + 1);
}
/**
* 功能描述：给定一个日期，获得它的年
*
* @param date
* 一个Date对象
* @return String 返回一个String对象
* @since 2011.02.24
*/
public static int getYear(Date date) {
Calendar cal = new GregorianCalendar();
cal.setTime(date);
return cal.get(GregorianCalendar.YEAR);
}
/**
* 功能描述：给定一个日期，获得它的月
*
* @param date
* 一个Date对象
* @return String 返回一个String对象
* @since 2011.02.24
*/
public static int getMonth(Date date) {
Calendar cal = new GregorianCalendar();
cal.setTime(date);
return (cal.get(GregorianCalendar.MONTH) + 1);
}
/**
* 功能描述：给定一个日期，获得它的天
*
* @param date
* 一个Date对象
* @return String 返回一个String对象
* @since 2011.02.24
*/
public static int getDay(Date date) {
Calendar cal = new GregorianCalendar();
cal.setTime(date);
return cal.get(GregorianCalendar.DAY_OF_MONTH);
}
/**
* 功能描述： 得到当前时间点
*
* @param
* @return: int
* @version: 2.0
*/
public static int getHour(Date date) {
Calendar c = Calendar.getInstance();
c.setTime(date);
return c.get(Calendar.HOUR_OF_DAY);
}
/**
* 功能描述：给定一个日期和一个年的数值，添加到这个日期年中，并返回
*
* @param date
* 一个Date对象
* @param years
* int类型
* @return Date 返回一个Date对象
*/
public static Date addYear(Date date, int years) {
Calendar cal = new GregorianCalendar();
cal.setTime(date);
cal.add(GregorianCalendar.YEAR, years);
return cal.getTime();
}
/**
* 功能描述：给定一个日期和一个月的数值，添加到这个日期月中，并返回
*
* @param date
* 一个Date对象
* @param months
* int类型
* @return Date 返回一个Date对象
*/
public static Date addMonth(Date date, int months) {
Calendar cal = new GregorianCalendar();
cal.setTime(date);
cal.add(GregorianCalendar.MONTH, months);
return cal.getTime();
}
/**
* 功能描述：给定一个日期和一个天的数值，添加到这个日期的天中，并返回
*
* @param date
* 一个Date对象
* @param day
* int类型
* @return Date 返回一个Date对象
*/
public static Date addDay(Date date, int day) {
Calendar cal = new GregorianCalendar();
cal.setTime(date);
cal.add(GregorianCalendar.DAY_OF_YEAR, day);
return cal.getTime();
}
public static String getNow(String pattern) {
return format(new Date(), pattern);
}
/**
* 功能描述：给定一个日期，判断它的星期，是否周末
*
* @param date
* Date对象
* @return boolean 布尔值
*/
public static boolean isSundayOrSaturday(Date date) {
Calendar cal = new GregorianCalendar();
cal.setTime(date);
int day = cal.get(GregorianCalendar.DAY_OF_WEEK);
if (GregorianCalendar.SATURDAY == day
|| GregorianCalendar.SUNDAY == day) {
return true;
}
return false;
}
/**
* 功能描述：给定字符串，转换成匹配格式的Date对象
*
* @param dateStr
* 一个String对象
* @return Date 一个Date对象
* @since 2011.02.23
*/
public static Date getDate(String dateStr) {
if (StringUtil.isBlank(dateStr))
return null;
dateStr = dateStr.trim();
SimpleDateFormat df = null;
if (dateStr.length() > 19) {
dateStr = dateStr.substring(0, 19);
}
if (dateStr.matches("[//d]{4}")) {
df = new SimpleDateFormat("yyyy");
} else if (dateStr.matches("[//d]{4}-[//d]{1,2}")) {
df = new SimpleDateFormat("yyyy-MM");
} else if (dateStr.matches("[//d]{4}-[//d]{1,2}-[//d]{1,2}")) {
df = new SimpleDateFormat("yyyy-MM-dd");
} else if (dateStr
.matches("[//d]{4}-[//d]{1,2}-[//d]{1,2}[//s]{1,}[//d]{1,2}")) {
df = new SimpleDateFormat("yyyy-MM-dd HH");
} else if (dateStr
.matches("[//d]{4}-[//d]{1,2}-[//d]{1,2}[//s]{1,}[//d]{1,2}:[//d]{1,2}")) {
df = new SimpleDateFormat("yyyy-MM-dd HH:mm");
} else if (dateStr
.matches("[//d]{4}-[//d]{1,2}-[//d]{1,2}[//s]{1,}[//d]{1,2}:[//d]{1,2}:[//d]{1,2}")) {
df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
} else if (dateStr.matches("[//d]{1,2}-[//d]{1,2}[//s]{1,}[//d]{1,2}")) {
df = new SimpleDateFormat("MM-dd HH");
} else {
return null;
}
try {
return df.parse(dateStr);
} catch (ParseException e) {
e.printStackTrace();
return null;
}
}
public static boolean isDate(Object obj) {
if (null == obj || !(obj instanceof Date)) {
return false;
} else {
return true;
}
}
/**
* 获取当前时间对应于1970-01-01 00：00：00的秒值
*
* @return 对应于1970-01-01 00：00：00的秒值
*/
public static Long getTimeinteger() {
Calendar ca = Calendar.getInstance();
return ca.getTimeInMillis();
}
public static Long getTimeinteger(Date date) {
return date.getTime();
}
public static Long getTimeinteger(String date) {
return getDate(date).getTime();
}
/**
* 获得日期的long类型
* */
public static Long getDateLong(int count, String format) {
String strDate = getLastTimeString(count, format);
Long longDate = getTimeinteger(strDate);
return longDate;
}
/**
* 生成与传入秒值对应的日期类型
*
* @param seconds
* @return
* @author James Cheung Date:Jul 25, 2012
*/
public static Date integerToDate(Long seconds) {
Long timeInMillis = seconds * 1000;
Date date = new Date(timeInMillis);
return date;
}
/*
* 返回一个日期中的最后一天,当月最后一天
*
* @param date it's type must be Date
*/
public static Date lastDay(Object date) {
if (!isDate(date)) {
logger.error("输入错误的类型,不能转换为日期");
}
Date dateConver = (Date) date;
Calendar calendar = new GregorianCalendar();
calendar.setTime(dateConver);
calendar.set(Calendar.DATE, calendar.getActualMaximum(Calendar.DATE));
return calendar.getTime();
}
/*
* 返回一个日期中的年份
*
* @param date it's type must be Date
*/
public static int getYear(Object date) {
if (!isDate(date)) {
logger.error("输入错误的类型,不能转换为日期");
}
Date dateConver = (Date) date;
Calendar calendar = Calendar.getInstance();
calendar.setTime(dateConver);
return calendar.get(Calendar.YEAR);
}
/*
* 返回一个日期中的星期
*
* @param date it's type must be Date
*/
public static int getWeek(Object date) {
if (!isDate(date)) {
logger.error("输入错误的类型,不能转换为日期");
}
Date dateConver = (Date) date;
Calendar calendar = Calendar.getInstance();
calendar.setTime(dateConver);
int[] weeks = { 7, 1, 2, 3, 4, 5, 6 };
return weeks[calendar.get(Calendar.DAY_OF_WEEK) - 1];
}
/*
* 返回星期类型
*
* @param date it's type must be Date
*
* @param weekType the Week Type to be returned dayType如果为0返回整数,1返回中文,其他返回英文
*/
public static String weekType(Object date, Object weekType) {
if (!isDate(date)) {
return null;
}
Date dateConver = (Date) date;
Calendar calendar = Calendar.getInstance();
calendar.setTime(dateConver);
String[] weeksNum = { "7", "1", "2", "3", "4", "5", "6" };
String[] weeksCn = { "星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六" };
String[] weeksEng = { "Sunday", "Monday", "Tuesday", "Wendsday",
"Thursday", "Friday", "Satday" };
try {
int weekTypes = (Integer) weekType;
if (0 == weekTypes) {
return weeksNum[calendar.get(Calendar.DAY_OF_WEEK) - 1];
} else if (1 == weekTypes) {
return weeksCn[calendar.get(Calendar.DAY_OF_WEEK) - 1];
} else {
return weeksEng[calendar.get(Calendar.DAY_OF_WEEK) - 1];
}
} catch (Exception e) {
return weeksEng[calendar.get(Calendar.DAY_OF_WEEK) - 1];
}
}
/*
* 返回一当前机器中的日期
*/
public static Date currentDate() {
return new Date();
}
public static String currentDateString(String fomat) {
return format(new Date(), fomat);
}
/*
* 返回一个日期时间中的小时数
*
* @param date it's type must be Date
*/
public static int getHour(Object date) {
if (!isDate(date)) {
logger.error("输入错误的类型,不能转换为日期");
}
Date dateConvert = (Date) date;
Calendar calendar = Calendar.getInstance();
calendar.setTime(dateConvert);
return calendar.get(Calendar.HOUR_OF_DAY);
}
/*
* 返回一个日期时间中的分钟数
*
* @param date it's type must be Date
*/
public static int getMinute(Object date) {
if (!isDate(date)) {
logger.error("输入错误的类型,不能转换为日期");
}
Date dateConvert = (Date) date;
Calendar calendar = Calendar.getInstance();
calendar.setTime(dateConvert);
return calendar.get(Calendar.MINUTE);
}
/*
* 返回一个日期时间中的秒钟
*
* @param date it's type must be Date
*/
public static int getSecond(Object date) {
if (!isDate(date)) {
logger.error("输入错误的类型,不能转换为日期");
}
Date dateConvert = (Date) date;
Calendar calendar = Calendar.getInstance();
calendar.setTime(dateConvert);
return calendar.get(Calendar.SECOND);
}
/*
* 返回一个日期中的月份
*
* @param date it's type must be Date
*/
public static int getMonth(Object date) {
if (!isDate(date)) {
logger.error("输入错误的类型,不能转换为日期");
}
Date dateConvert = (Date) date;
Calendar calendar = Calendar.getInstance();
calendar.setTime(dateConvert);
return calendar.get(Calendar.MONTH) + 1;
}
/*
* 返回一个日期中的天数
*
* @param date it's type must be Date
*/
public static int getDay(Object date) {
if (!isDate(date)) {
logger.error("输入错误的类型,不能转换为日期");
}
Date dateConvert = (Date) date;
Calendar calendar = Calendar.getInstance();
calendar.setTime(dateConvert);
return calendar.get(Calendar.DATE);
}
/*
* 返回两个日期相差的天数
*
* @param dateStart it's type must be Date
*
* @param dateEnd it's type must be Date
*/
public static int daysBetweenTwoDate(Object dateStart, Object dateEnd) {
if (!isDate(dateStart) || !isDate(dateEnd)) {
logger.error("输入错误的类型,不能转换为日期");
}
Date dateStartConver = (Date) dateStart;
Date dateEndConver = (Date) dateEnd;
long millSeconds = dateEndConver.getTime() - dateStartConver.getTime();
int res = (int) (millSeconds % (24 * 60 * 60 * 1000));
return res == 0 ? (int) (millSeconds / (24 * 60 * 60 * 1000))
: ((int) (millSeconds / (24 * 60 * 60 * 1000) + 1));
}
static class FastDateFormat extends Format {
/**
* Required for serialization support.
*
* @see java.io.Serializable
*/
private static final long serialVersionUID = 1L;
/**
* FULL locale dependent date or time style.
*/
public static final int FULL = DateFormat.FULL;
/**
* LONG locale dependent date or time style.
*/
public static final int LONG = DateFormat.LONG;
/**
* MEDIUM locale dependent date or time style.
*/
public static final int MEDIUM = DateFormat.MEDIUM;
/**
* SHORT locale dependent date or time style.
*/
public static final int SHORT = DateFormat.SHORT;
/**
* The c default pattern.
*/
private static String cDefaultPattern; // lazily initialised by
// getInstance()
/**
* The Constant cInstanceCache.
*/
private static final Map<FastDateFormat, FastDateFormat> cInstanceCache = new HashMap<FastDateFormat, FastDateFormat>(
7);
/**
* The Constant cDateInstanceCache.
*/
private static final Map<Object, FastDateFormat> cDateInstanceCache = new HashMap<Object, FastDateFormat>(
7);
/**
* The Constant cTimeInstanceCache.
*/
private static final Map<Object, FastDateFormat> cTimeInstanceCache = new HashMap<Object, FastDateFormat>(
7);
/**
* The Constant cDateTimeInstanceCache.
*/
private static final Map<Object, FastDateFormat> cDateTimeInstanceCache = new HashMap<Object, FastDateFormat>(
7);
/**
* The Constant cTimeZoneDisplayCache.
*/
private static final Map<Object, String> cTimeZoneDisplayCache = new HashMap<Object, String>(
7);
/**
* The pattern.
*/
private final String mPattern;
/**
* The time zone.
*/
private final TimeZone mTimeZone;
/**
* Whether the time zone overrides any on Calendars.
*/
private final boolean mTimeZoneForced;
/**
* The locale.
*/
private final Locale mLocale;
/**
* Whether the locale overrides the default.
*/
private final boolean mLocaleForced;
/**
* The parsed rules.
*/
private transient Rule[] mRules;
/**
* The estimated maximum length.
*/
private transient int mMaxLengthEstimate;
/**
* Gets the single instance of FastDateFormat.
*
* @return single instance of FastDateFormat
*/
public static FastDateFormat getInstance() {
return getInstance(getDefaultPattern(), null, null);
}
/**
* Gets the single instance of FastDateFormat.
*
* @param pattern
* the pattern
* @return single instance of FastDateFormat
*/
public static FastDateFormat getInstance(String pattern) {
return getInstance(pattern, null, null);
}
/**
* Gets the single instance of FastDateFormat.
*
* @param pattern
* the pattern
* @param timeZone
* the time zone
* @return single instance of FastDateFormat
*/
public static FastDateFormat getInstance(String pattern,
TimeZone timeZone) {
return getInstance(pattern, timeZone, null);
}
/**
* Gets the single instance of FastDateFormat.
*
* @param pattern
* the pattern
* @param locale
* the locale
* @return single instance of FastDateFormat
*/
public static FastDateFormat getInstance(String pattern, Locale locale) {
return getInstance(pattern, null, locale);
}
/**
* Gets the single instance of FastDateFormat.
*
* @param pattern
* the pattern
* @param timeZone
* the time zone
* @param locale
* the locale
* @return single instance of FastDateFormat
*/
public static synchronized FastDateFormat getInstance(String pattern,
TimeZone timeZone, Locale locale) {
FastDateFormat emptyFormat = new FastDateFormat(pattern, timeZone,
locale);
FastDateFormat format = cInstanceCache.get(emptyFormat);
if (format == null) {
format = emptyFormat;
format.init(); // convert shell format into usable one
cInstanceCache.put(format, format); // this is OK!
}
return format;
}
/**
* Gets the date instance.
*
* @param style
* the style
* @return the date instance
*/
public static FastDateFormat getDateInstance(int style) {
return getDateInstance(style, null, null);
}
/**
* Gets the date instance.
*
* @param style
* the style
* @param locale
* the locale
* @return the date instance
*/
public static FastDateFormat getDateInstance(int style, Locale locale) {
return getDateInstance(style, null, locale);
}
/**
* Gets the date instance.
*
* @param style
* the style
* @param timeZone
* the time zone
* @return the date instance
*/
public static FastDateFormat getDateInstance(int style,
TimeZone timeZone) {
return getDateInstance(style, timeZone, null);
}
/**
* Gets the date instance.
*
* @param style
* the style
* @param timeZone
* the time zone
* @param locale
* the locale
* @return the date instance
*/
public static synchronized FastDateFormat getDateInstance(int style,
TimeZone timeZone, Locale locale) {
Object key = Integer.valueOf(style);
if (timeZone != null) {
key = new Pair(key, timeZone);
}
if (locale == null) {
locale = Locale.getDefault();
}
key = new Pair(key, locale);
FastDateFormat format = cDateInstanceCache.get(key);
if (format == null) {
try {
SimpleDateFormat formatter = (SimpleDateFormat) DateFormat
.getDateInstance(style, locale);
String pattern = formatter.toPattern();
format = getInstance(pattern, timeZone, locale);
cDateInstanceCache.put(key, format);
} catch (ClassCastException ex) {
throw new IllegalArgumentException(
"No date pattern for locale: " + locale);
}
}
return format;
}
/**
* Gets the time instance.
*
* @param style
* the style
* @return the time instance
*/
public static FastDateFormat getTimeInstance(int style) {
return getTimeInstance(style, null, null);
}
/**
* Gets the time instance.
*
* @param style
* the style
* @param locale
* the locale
* @return the time instance
*/
public static FastDateFormat getTimeInstance(int style, Locale locale) {
return getTimeInstance(style, null, locale);
}
/**
* Gets the time instance.
*
* @param style
* the style
* @param timeZone
* the time zone
* @return the time instance
*/
public static FastDateFormat getTimeInstance(int style,
TimeZone timeZone) {
return getTimeInstance(style, timeZone, null);
}
/**
* Gets the time instance.
*
* @param style
* the style
* @param timeZone
* the time zone
* @param locale
* the locale
* @return the time instance
*/
public static synchronized FastDateFormat getTimeInstance(int style,
TimeZone timeZone, Locale locale) {
Object key = Integer.valueOf(style);
if (timeZone != null) {
key = new Pair(key, timeZone);
}
if (locale != null) {
key = new Pair(key, locale);
}
FastDateFormat format = cTimeInstanceCache.get(key);
if (format == null) {
if (locale == null) {
locale = Locale.getDefault();
}
try {
SimpleDateFormat formatter = (SimpleDateFormat) DateFormat
.getTimeInstance(style, locale);
String pattern = formatter.toPattern();
format = getInstance(pattern, timeZone, locale);
cTimeInstanceCache.put(key, format);
} catch (ClassCastException ex) {
throw new IllegalArgumentException(
"No date pattern for locale: " + locale);
}
}
return format;
}
/**
* Gets the date time instance.
*
* @param dateStyle
* the date style
* @param timeStyle
* the time style
* @return the date time instance
*/
public static FastDateFormat getDateTimeInstance(int dateStyle,
int timeStyle) {
return getDateTimeInstance(dateStyle, timeStyle, null, null);
}
/**
* Gets the date time instance.
*
* @param dateStyle
* the date style
* @param timeStyle
* the time style
* @param locale
* the locale
* @return the date time instance
*/
public static FastDateFormat getDateTimeInstance(int dateStyle,
int timeStyle, Locale locale) {
return getDateTimeInstance(dateStyle, timeStyle, null, locale);
}
/**
* Gets the date time instance.
*
* @param dateStyle
* the date style
* @param timeStyle
* the time style
* @param timeZone
* the time zone
* @return the date time instance
*/
public static FastDateFormat getDateTimeInstance(int dateStyle,
int timeStyle, TimeZone timeZone) {
return getDateTimeInstance(dateStyle, timeStyle, timeZone, null);
}
/**
* Gets the date time instance.
*
* @param dateStyle
* the date style
* @param timeStyle
* the time style
* @param timeZone
* the time zone
* @param locale
* the locale
* @return the date time instance
*/
public static synchronized FastDateFormat getDateTimeInstance(
int dateStyle, int timeStyle, TimeZone timeZone, Locale locale) {
Object key = new Pair(Integer.valueOf(dateStyle),
Integer.valueOf(timeStyle));
if (timeZone != null) {
key = new Pair(key, timeZone);
}
if (locale == null) {
locale = Locale.getDefault();
}
key = new Pair(key, locale);
FastDateFormat format = cDateTimeInstanceCache.get(key);
if (format == null) {
try {
SimpleDateFormat formatter = (SimpleDateFormat) DateFormat
.getDateTimeInstance(dateStyle, timeStyle, locale);
String pattern = formatter.toPattern();
format = getInstance(pattern, timeZone, locale);
cDateTimeInstanceCache.put(key, format);
} catch (ClassCastException ex) {
throw new IllegalArgumentException(
"No date time pattern for locale: " + locale);
}
}
return format;
}
/**
* Gets the time zone display.
*
* @param tz
* the tz
* @param daylight
* the daylight
* @param style
* the style
* @param locale
* the locale
* @return the time zone display
*/
static synchronized String getTimeZoneDisplay(TimeZone tz,
boolean daylight, int style, Locale locale) {
Object key = new TimeZoneDisplayKey(tz, daylight, style, locale);
String value = cTimeZoneDisplayCache.get(key);
if (value == null) {
value = tz.getDisplayName(daylight, style, locale);
cTimeZoneDisplayCache.put(key, value);
}
return value;
}
/**
* <p>
* Gets the default pattern.
* </p>
*
* @return the default pattern
*/
private static synchronized String getDefaultPattern() {
if (cDefaultPattern == null) {
cDefaultPattern = new SimpleDateFormat().toPattern();
}
return cDefaultPattern;
}
/**
* Instantiates a new fast date format.
*
* @param pattern
* the pattern
* @param timeZone
* the time zone
* @param locale
* the locale
*/
protected FastDateFormat(String pattern, TimeZone timeZone,
Locale locale) {
super();
if (pattern == null) {
throw new IllegalArgumentException(
"The pattern must not be null");
}
mPattern = pattern;
mTimeZoneForced = (timeZone != null);
if (timeZone == null) {
timeZone = TimeZone.getDefault();
}
mTimeZone = timeZone;
mLocaleForced = (locale != null);
if (locale == null) {
locale = Locale.getDefault();
}
mLocale = locale;
}
/**
* Inits the.
*/
protected void init() {
List<Rule> rulesList = parsePattern();
mRules = rulesList.toArray(new Rule[rulesList.size()]);
int len = 0;
for (int i = mRules.length; --i >= 0;) {
len += mRules[i].estimateLength();
}
mMaxLengthEstimate = len;
}
/**
* Parses the pattern.
*
* @return the list
*/
protected List<Rule> parsePattern() {
DateFormatSymbols symbols = new DateFormatSymbols(mLocale);
List<Rule> rules = new ArrayList<Rule>();
String[] ERAs = symbols.getEras();
String[] months = symbols.getMonths();
String[] shortMonths = symbols.getShortMonths();
String[] weekdays = symbols.getWeekdays();
String[] shortWeekdays = symbols.getShortWeekdays();
String[] AmPmStrings = symbols.getAmPmStrings();
int length = mPattern.length();
int[] indexRef = new int[1];
for (int i = 0; i < length; i++) {
indexRef[0] = i;
String token = parseToken(mPattern, indexRef);
i = indexRef[0];
int tokenLen = token.length();
if (tokenLen == 0) {
break;
}
Rule rule;
char c = token.charAt(0);
switch (c) {
case 'G': // era designator (text)
rule = new TextField(Calendar.ERA, ERAs);
break;
case 'y': // year (number)
if (tokenLen >= 4) {
rule = selectNumberRule(Calendar.YEAR, tokenLen);
} else {
rule = TwoDigitYearField.INSTANCE;
}
break;
case 'M': // month in year (text and number)
if (tokenLen >= 4) {
rule = new TextField(Calendar.MONTH, months);
} else if (tokenLen == 3) {
rule = new TextField(Calendar.MONTH, shortMonths);
} else if (tokenLen == 2) {
rule = TwoDigitMonthField.INSTANCE;
} else {
rule = UnpaddedMonthField.INSTANCE;
}
break;
case 'd': // day in month (number)
rule = selectNumberRule(Calendar.DAY_OF_MONTH, tokenLen);
break;
case 'h': // hour in am/pm (number, 1..12)
rule = new TwelveHourField(selectNumberRule(Calendar.HOUR,
tokenLen));
break;
case 'H': // hour in day (number, 0..23)
rule = selectNumberRule(Calendar.HOUR_OF_DAY, tokenLen);
break;
case 'm': // minute in hour (number)
rule = selectNumberRule(Calendar.MINUTE, tokenLen);
break;
case 's': // second in minute (number)
rule = selectNumberRule(Calendar.SECOND, tokenLen);
break;
case 'S': // millisecond (number)
rule = selectNumberRule(Calendar.MILLISECOND, tokenLen);
break;
case 'E': // day in week (text)
rule = new TextField(Calendar.DAY_OF_WEEK,
tokenLen < 4 ? shortWeekdays : weekdays);
break;
case 'D': // day in year (number)
rule = selectNumberRule(Calendar.DAY_OF_YEAR, tokenLen);
break;
case 'F': // day of week in month (number)
rule = selectNumberRule(Calendar.DAY_OF_WEEK_IN_MONTH,
tokenLen);
break;
case 'w': // week in year (number)
rule = selectNumberRule(Calendar.WEEK_OF_YEAR, tokenLen);
break;
case 'W': // week in month (number)
rule = selectNumberRule(Calendar.WEEK_OF_MONTH, tokenLen);
break;
case 'a': // am/pm marker (text)
rule = new TextField(Calendar.AM_PM, AmPmStrings);
break;
case 'k': // hour in day (1..24)
rule = new TwentyFourHourField(selectNumberRule(
Calendar.HOUR_OF_DAY, tokenLen));
break;
case 'K': // hour in am/pm (0..11)
rule = selectNumberRule(Calendar.HOUR, tokenLen);
break;
case 'z': // time zone (text)
if (tokenLen >= 4) {
rule = new TimeZoneNameRule(mTimeZone, mTimeZoneForced,
mLocale, TimeZone.LONG);
} else {
rule = new TimeZoneNameRule(mTimeZone, mTimeZoneForced,
mLocale, TimeZone.SHORT);
}
break;
case 'Z': // time zone (value)
if (tokenLen == 1) {
rule = TimeZoneNumberRule.INSTANCE_NO_COLON;
} else {
rule = TimeZoneNumberRule.INSTANCE_COLON;
}
break;
case '/'': // literal text
String sub = token.substring(1);
if (sub.length() == 1) {
rule = new CharacterLiteral(sub.charAt(0));
} else {
rule = new StringLiteral(sub);
}
break;
default:
throw new IllegalArgumentException(
"Illegal pattern component: " + token);
}
rules.add(rule);
}
return rules;
}
/**
* Parses the token.
*
* @param pattern
* the pattern
* @param indexRef
* the index ref
* @return the string
*/
protected String parseToken(String pattern, int[] indexRef) {
StringBuilder buf = new StringBuilder();
int i = indexRef[0];
int length = pattern.length();
char c = pattern.charAt(i);
if (c >= 'A' && c <= 'Z' || c >= 'a' && c <= 'z') {
// Scan a run of the same character, which indicates a time
// pattern.
buf.append(c);
while (i + 1 < length) {
char peek = pattern.charAt(i + 1);
if (peek == c) {
buf.append(c);
i++;
} else {
break;
}
}
} else {
// This will identify token as text.
buf.append('/'');
boolean inLiteral = false;
for (; i < length; i++) {
c = pattern.charAt(i);
if (c == '/'') {
if (i + 1 < length && pattern.charAt(i + 1) == '/'') {
// '' is treated as escaped '
i++;
buf.append(c);
} else {
inLiteral = !inLiteral;
}
} else if (!inLiteral
&& (c >= 'A' && c <= 'Z' || c >= 'a' && c <= 'z')) {
i--;
break;
} else {
buf.append(c);
}
}
}
indexRef[0] = i;
return buf.toString();
}
/**
* Select number rule.
*
* @param field
* the field
* @param padding
* the padding
* @return the number rule
*/
protected NumberRule selectNumberRule(int field, int padding) {
switch (padding) {
case 1:
return new UnpaddedNumberField(field);
case 2:
return new TwoDigitNumberField(field);
default:
return new PaddedNumberField(field, padding);
}
}
/**
* Format.
*
* @param millis
* the millis
* @return the string
*/
public String format(long millis) {
return format(new Date(millis));
}
/**
* Format.
*
* @param date
* the date
* @return the string
*/
public String format(Date date) {
Calendar c = new GregorianCalendar(mTimeZone);
c.setTime(date);
return applyRules(c, new StringBuffer(mMaxLengthEstimate))
.toString();
}
/**
* Format.
*
* @param calendar
* the calendar
* @return the string
*/
public String format(Calendar calendar) {
return format(calendar, new StringBuffer(mMaxLengthEstimate))
.toString();
}
/**
* Format.
*
* @param millis
* the millis
* @param buf
* the buf
* @return the string buffer
*/
public StringBuffer format(long millis, StringBuffer buf) {
return format(new Date(millis), buf);
}
/**
* Format.
*
* @param date
* the date
* @param buf
* the buf
* @return the string buffer
*/
public StringBuffer format(Date date, StringBuffer buf) {
Calendar c = new GregorianCalendar(mTimeZone);
c.setTime(date);
return applyRules(c, buf);
}
/**
* Format.
*
* @param calendar
* the calendar
* @param buf
* the buf
* @return the string buffer
*/
public StringBuffer format(Calendar calendar, StringBuffer buf) {
if (mTimeZoneForced) {
calendar.getTimeInMillis(); // / LANG-538
calendar = (Calendar) calendar.clone();
calendar.setTimeZone(mTimeZone);
}
return applyRules(calendar, buf);
}
/**
* Apply rules.
*
* @param calendar
* the calendar
* @param buf
* the buf
* @return the string buffer
*/
protected StringBuffer applyRules(Calendar calendar, StringBuffer buf) {
Rule[] rules = mRules;
int len = mRules.length;
for (int i = 0; i < len; i++) {
rules[i].appendTo(buf, calendar);
}
return buf;
}
@Override
public Object parseObject(String source, ParsePosition pos) {
pos.setIndex(0);
pos.setErrorIndex(0);
return null;
}
/**
* Gets the pattern.
*
* @return the pattern
*/
public String getPattern() {
return mPattern;
}
/**
* Gets the time zone.
*
* @return the time zone
*/
public TimeZone getTimeZone() {
return mTimeZone;
}
/**
* Gets the time zone overrides calendar.
*
* @return the time zone overrides calendar
*/
public boolean getTimeZoneOverridesCalendar() {
return mTimeZoneForced;
}
/**
* Gets the locale.
*
* @return the locale
*/
public Locale getLocale() {
return mLocale;
}
/**
* Gets the max length estimate.
*
* @return the max length estimate
*/
public int getMaxLengthEstimate() {
return mMaxLengthEstimate;
}
@Override
public boolean equals(Object obj) {
if (obj instanceof FastDateFormat == false) {
return false;
}
FastDateFormat other = (FastDateFormat) obj;
if ((mPattern == other.mPattern || mPattern.equals(other.mPattern))
&& (mTimeZone == other.mTimeZone || mTimeZone
.equals(other.mTimeZone))
&& (mLocale == other.mLocale || mLocale
.equals(other.mLocale))
&& (mTimeZoneForced == other.mTimeZoneForced)
&& (mLocaleForced == other.mLocaleForced)) {
return true;
}
return false;
}
@Override
public int hashCode() {
int total = 0;
total += mPattern.hashCode();
total += mTimeZone.hashCode();
total += (mTimeZoneForced ? 1 : 0);
total += mLocale.hashCode();
total += (mLocaleForced ? 1 : 0);
return total;
}
@Override
public String toString() {
return "FastDateFormat[" + mPattern + "]";
}
/**
* The Interface Rule.
*/
private interface Rule {
/**
* Estimate length.
*
* @return the int
*/
int estimateLength();
/**
* Append to.
*
* @param buffer
* the buffer
* @param calendar
* the calendar
*/
void appendTo(StringBuffer buffer, Calendar calendar);
}
/**
* The Interface NumberRule.
*/
private interface NumberRule extends Rule {
/**
* Append to.
*
* @param buffer
* the buffer
* @param value
* the value
*/
void appendTo(StringBuffer buffer, int value);
}
/**
* The Class CharacterLiteral.
*/
private static class CharacterLiteral implements Rule {
/**
* The m value.
*/
private final char mValue;
/**
* Instantiates a new character literal.
*
* @param value
* the value
*/
CharacterLiteral(char value) {
mValue = value;
}
public int estimateLength() {
return 1;
}
public void appendTo(StringBuffer buffer, Calendar calendar) {
buffer.append(mValue);
}
}
/**
* The Class StringLiteral.
*/
private static class StringLiteral implements Rule {
/**
* The m value.
*/
private final String mValue;
/**
* Instantiates a new string literal.
*
* @param value
* the value
*/
StringLiteral(String value) {
mValue = value;
}
public int estimateLength() {
return mValue.length();
}
public void appendTo(StringBuffer buffer, Calendar calendar) {
buffer.append(mValue);
}
}
/**
* The Class TextField.
*/
private static class TextField implements Rule {
/**
* The m field.
*/
private final int mField;
/**
* The m values.
*/
private final String[] mValues;
/**
* Instantiates a new text field.
*
* @param field
* the field
* @param values
* the values
*/
TextField(int field, String[] values) {
mField = field;
mValues = values;
}
public int estimateLength() {
int max = 0;
for (int i = mValues.length; --i >= 0;) {
int len = mValues[i].length();
if (len > max) {
max = len;
}
}
return max;
}
public void appendTo(StringBuffer buffer, Calendar calendar) {
buffer.append(mValues[calendar.get(mField)]);
}
}
/**
* The Class UnpaddedNumberField.
*/
private static class UnpaddedNumberField implements NumberRule {
/**
* The m field.
*/
private final int mField;
/**
* Instantiates a new unpadded number field.
*
* @param field
* the field
*/
UnpaddedNumberField(int field) {
mField = field;
}
public int estimateLength() {
return 4;
}
public void appendTo(StringBuffer buffer, Calendar calendar) {
appendTo(buffer, calendar.get(mField));
}
public final void appendTo(StringBuffer buffer, int value) {
if (value < 10) {
buffer.append((char) (value + '0'));
} else if (value < 100) {
buffer.append((char) (value / 10 + '0'));
buffer.append((char) (value % 10 + '0'));
} else {
buffer.append(Integer.toString(value));
}
}
}
/**
* The Class UnpaddedMonthField.
*/
private static class UnpaddedMonthField implements NumberRule {
/**
* The Constant INSTANCE.
*/
static final UnpaddedMonthField INSTANCE = new UnpaddedMonthField();
/**
* Instantiates a new unpadded month field.
*/
UnpaddedMonthField() {
super();
}
public int estimateLength() {
return 2;
}
public void appendTo(StringBuffer buffer, Calendar calendar) {
appendTo(buffer, calendar.get(Calendar.MONTH) + 1);
}
public final void appendTo(StringBuffer buffer, int value) {
if (value < 10) {
buffer.append((char) (value + '0'));
} else {
buffer.append((char) (value / 10 + '0'));
buffer.append((char) (value % 10 + '0'));
}
}
}
/**
* The Class PaddedNumberField.
*/
private static class PaddedNumberField implements NumberRule {
/**
* The m field.
*/
private final int mField;
/**
* The m size.
*/
private final int mSize;
/**
* Instantiates a new padded number field.
*
* @param field
* the field
* @param size
* the size
*/
PaddedNumberField(int field, int size) {
if (size < 3) {
throw new IllegalArgumentException();
}
mField = field;
mSize = size;
}
public int estimateLength() {
return 4;
}
public void appendTo(StringBuffer buffer, Calendar calendar) {
appendTo(buffer, calendar.get(mField));
}
public final void appendTo(StringBuffer buffer, int value) {
if (value < 100) {
for (int i = mSize; --i >= 2;) {
buffer.append('0');
}
buffer.append((char) (value / 10 + '0'));
buffer.append((char) (value % 10 + '0'));
} else {
int digits;
if (value < 1000) {
digits = 3;
} else {
if (!(value > -1)) {
throw new IllegalArgumentException(String.format(
"Negative values should not be possible",
Long.valueOf(value)));
}
digits = Integer.toString(value).length();
}
for (int i = mSize; --i >= digits;) {
buffer.append('0');
}
buffer.append(Integer.toString(value));
}
}
}
/**
* The Class TwoDigitNumberField.
*/
private static class TwoDigitNumberField implements NumberRule {
/**
* The m field.
*/
private final int mField;
/**
* Instantiates a new two digit number field.
*
* @param field
* the field
*/
TwoDigitNumberField(int field) {
mField = field;
}
public int estimateLength() {
return 2;
}
public void appendTo(StringBuffer buffer, Calendar calendar) {
appendTo(buffer, calendar.get(mField));
}
public final void appendTo(StringBuffer buffer, int value) {
if (value < 100) {
buffer.append((char) (value / 10 + '0'));
buffer.append((char) (value % 10 + '0'));
} else {
buffer.append(Integer.toString(value));
}
}
}
/**
* The Class TwoDigitYearField.
*/
private static class TwoDigitYearField implements NumberRule {
/**
* The Constant INSTANCE.
*/
static final TwoDigitYearField INSTANCE = new TwoDigitYearField();
/**
* Instantiates a new two digit year field.
*/
TwoDigitYearField() {
super();
}
public int estimateLength() {
return 2;
}
public void appendTo(StringBuffer buffer, Calendar calendar) {
appendTo(buffer, calendar.get(Calendar.YEAR) % 100);
}
public final void appendTo(StringBuffer buffer, int value) {
buffer.append((char) (value / 10 + '0'));
buffer.append((char) (value % 10 + '0'));
}
}
/**
* The Class TwoDigitMonthField.
*/
private static class TwoDigitMonthField implements NumberRule {
/**
* The Constant INSTANCE.
*/
static final TwoDigitMonthField INSTANCE = new TwoDigitMonthField();
/**
* Instantiates a new two digit month field.
*/
TwoDigitMonthField() {
super();
}
public int estimateLength() {
return 2;
}
public void appendTo(StringBuffer buffer, Calendar calendar) {
appendTo(buffer, calendar.get(Calendar.MONTH) + 1);
}
public final void appendTo(StringBuffer buffer, int value) {
buffer.append((char) (value / 10 + '0'));
buffer.append((char) (value % 10 + '0'));
}
}
/**
* The Class TwelveHourField.
*/
private static class TwelveHourField implements NumberRule {
/**
* The m rule.
*/
private final NumberRule mRule;
/**
* Instantiates a new twelve hour field.
*
* @param rule
* the rule
*/
TwelveHourField(NumberRule rule) {
mRule = rule;
}
public int estimateLength() {
return mRule.estimateLength();
}
public void appendTo(StringBuffer buffer, Calendar calendar) {
int value = calendar.get(Calendar.HOUR);
if (value == 0) {
value = calendar.getLeastMaximum(Calendar.HOUR) + 1;
}
mRule.appendTo(buffer, value);
}
public void appendTo(StringBuffer buffer, int value) {
mRule.appendTo(buffer, value);
}
}
/**
* The Class TwentyFourHourField.
*/
private static class TwentyFourHourField implements NumberRule {
/**
* The m rule.
*/
private final NumberRule mRule;
/**
* Instantiates a new twenty four hour field.
*
* @param rule
* the rule
*/
TwentyFourHourField(NumberRule rule) {
mRule = rule;
}
public int estimateLength() {
return mRule.estimateLength();
}
public void appendTo(StringBuffer buffer, Calendar calendar) {
int value = calendar.get(Calendar.HOUR_OF_DAY);
if (value == 0) {
value = calendar.getMaximum(Calendar.HOUR_OF_DAY) + 1;
}
mRule.appendTo(buffer, value);
}
public void appendTo(StringBuffer buffer, int value) {
mRule.appendTo(buffer, value);
}
}
/**
* The Class TimeZoneNameRule.
*/
private static class TimeZoneNameRule implements Rule {
/**
* The m time zone.
*/
private final TimeZone mTimeZone;
/**
* The m time zone forced.
*/
private final boolean mTimeZoneForced;
/**
* The m locale.
*/
private final Locale mLocale;
/**
* The m style.
*/
private final int mStyle;
/**
* The m standard.
*/
private final String mStandard;
/**
* The m daylight.
*/
private final String mDaylight;
/**
* Constructs an instance of <code>TimeZoneNameRule</code> with the
* specified properties.
*
* @param timeZone
* the time zone
* @param timeZoneForced
* if <code>true</code> the time zone is forced into
* standard and daylight
* @param locale
* the locale
* @param style
* the style
*/
TimeZoneNameRule(TimeZone timeZone, boolean timeZoneForced,
Locale locale, int style) {
mTimeZone = timeZone;
mTimeZoneForced = timeZoneForced;
mLocale = locale;
mStyle = style;
if (timeZoneForced) {
mStandard = getTimeZoneDisplay(timeZone, false, style,
locale);
mDaylight = getTimeZoneDisplay(timeZone, true, style,
locale);
} else {
mStandard = null;
mDaylight = null;
}
}
public int estimateLength() {
if (mTimeZoneForced) {
return Math.max(mStandard.length(), mDaylight.length());
} else if (mStyle == TimeZone.SHORT) {
return 4;
} else {
return 40;
}
}
public void appendTo(StringBuffer buffer, Calendar calendar) {
if (mTimeZoneForced) {
if (mTimeZone.useDaylightTime()
&& calendar.get(Calendar.DST_OFFSET) != 0) {
buffer.append(mDaylight);
} else {
buffer.append(mStandard);
}
} else {
TimeZone timeZone = calendar.getTimeZone();
if (timeZone.useDaylightTime()
&& calendar.get(Calendar.DST_OFFSET) != 0) {
buffer.append(getTimeZoneDisplay(timeZone, true,
mStyle, mLocale));
} else {
buffer.append(getTimeZoneDisplay(timeZone, false,
mStyle, mLocale));
}
}
}
}
/**
* The Class TimeZoneNumberRule.
*/
private static class TimeZoneNumberRule implements Rule {
/**
* The Constant INSTANCE_COLON.
*/
static final TimeZoneNumberRule INSTANCE_COLON = new TimeZoneNumberRule(
true);
/**
* The Constant INSTANCE_NO_COLON.
*/
static final TimeZoneNumberRule INSTANCE_NO_COLON = new TimeZoneNumberRule(
false);
/**
* The m colon.
*/
final boolean mColon;
/**
* Instantiates a new time zone number rule.
*
* @param colon
* the colon
*/
TimeZoneNumberRule(boolean colon) {
mColon = colon;
}
public int estimateLength() {
return 5;
}
public void appendTo(StringBuffer buffer, Calendar calendar) {
int offset = calendar.get(Calendar.ZONE_OFFSET)
+ calendar.get(Calendar.DST_OFFSET);
if (offset < 0) {
buffer.append('-');
offset = -offset;
} else {
buffer.append('+');
}
int hours = offset / (60 * 60 * 1000);
buffer.append((char) (hours / 10 + '0'));
buffer.append((char) (hours % 10 + '0'));
if (mColon) {
buffer.append(':');
}
int minutes = offset / (60 * 1000) - 60 * hours;
buffer.append((char) (minutes / 10 + '0'));
buffer.append((char) (minutes % 10 + '0'));
}
}
/**
* The Class TimeZoneDisplayKey.
*/
private static class TimeZoneDisplayKey {
/**
* The m time zone.
*/
private final TimeZone mTimeZone;
/**
* The m style.
*/
private final int mStyle;
/**
* The m locale.
*/
private final Locale mLocale;
/**
* Constructs an instance of <code>TimeZoneDisplayKey</code> with
* the specified properties.
*
* @param timeZone
* the time zone
* @param daylight
* adjust the style for daylight saving time if
* <code>true</code>
* @param style
* the timezone style
* @param locale
* the timezone locale
*/
TimeZoneDisplayKey(TimeZone timeZone, boolean daylight, int style,
Locale locale) {
mTimeZone = timeZone;
if (daylight) {
style |= 0x80000000;
}
mStyle = style;
mLocale = locale;
}
@Override
public int hashCode() {
return mStyle * 31 + mLocale.hashCode();
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj instanceof TimeZoneDisplayKey) {
TimeZoneDisplayKey other = (TimeZoneDisplayKey) obj;
return mTimeZone.equals(other.mTimeZone)
&& mStyle == other.mStyle
&& mLocale.equals(other.mLocale);
}
return false;
}
}
/**
* The Class Pair.
*/
private static class Pair {
/**
* The m obj1.
*/
private final Object mObj1;
/**
* The m obj2.
*/
private final Object mObj2;
/**
* Instantiates a new pair.
*
* @param obj1
* the obj1
* @param obj2
* the obj2
*/
public Pair(Object obj1, Object obj2) {
mObj1 = obj1;
mObj2 = obj2;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (!(obj instanceof Pair)) {
return false;
}
Pair key = (Pair) obj;
return (mObj1 == null ? key.mObj1 == null : mObj1
.equals(key.mObj1))
&& (mObj2 == null ? key.mObj2 == null : mObj2
.equals(key.mObj2));
}
@Override
public int hashCode() {
return (mObj1 == null ? 0 : mObj1.hashCode())
+ (mObj2 == null ? 0 : mObj2.hashCode());
}
@Override
public String toString() {
return "[" + mObj1 + ':' + mObj2 + ']';
}
}
@Override
public StringBuffer format(Object obj, StringBuffer toAppendTo,
FieldPosition pos) {
return null;
}
}
/**
* 功能描述：给定Date对象，转换成指定格式的字符串日期
*
* @param date
* 一个Date对象，
* @return : String ex: 2009-06-09
* @author : daixl
* @since : 2011.02.23
*/
public static String getYmdStr(Date date) {
if (date == null)
return EMPTY;
return ISO_DATE_FORMAT.format(date);
}
/**
* 功能描述：根据字符串获取一个格式化的时间字符串
*
* @param date
* 一个Date对象，
* @return : String ex: 2009-06-09
* @author : daixl
* @since : 2011.02.23
*/
public static String getYmdStr(Date date, String pattern) {
if (date == null)
return EMPTY;
return format(date, pattern);
}
/**
* 功能描述： 将Date日期转换为带时分秒的字符串型返回
*
* @param date
* the date
* @return : String, ex: 2009-06-09 02:04:05
* @author : daixl
* @since : 2011.02.23
*/
public static String getYmdhisStr(Date date) {
if (date == null)
return EMPTY;
return ISO_DATETIME_FORMAT.format(date);
}
/**
* 功能描述：给定一个日期和一个整形数值，的到给日期的前一天。
*
* @param date
* Date对象
* @param n
* 整形数值
* @return Date 一个Date对象
* @author daixl
* @since 2011.02.23
*/
public static Date getDateByDateAndHour(Date date, int n) {
return new Date(date.getTime() + n * 3600000);
}
/**
* 功能描述：给定一个日期和一个整形数值，的到给日期的前一天。
*
* @param date
* Date对象
* @param n
* 整形数值
* @return Date 一个Date对象
* @author daixl
* @since 2011.02.23
*/
public static Date getDateAfterDays(Date date, int n) {
Date rtnDate = new Date();
rtnDate.setTime(date.getTime() + Long.parseLong("86400000") * n);
return rtnDate;
}
public static Long getCurrentDateLong() {
Date dt = new Date();
// 得到秒数，Date类型的getTime()返回毫秒数
long lSysTime1 = dt.getTime() / 1000;
// System.out.println(lSysTime1);
return lSysTime1;
}
/**
* 获得昨天的年
* */
public static String getStrYear(int iI, String strFormat) {
String str = DateUtils.getLastTimeString(iI, "yyyy-MM-dd");
String[] strList = str.split("-");
return strList[0];
}
/**
* 获得昨天的月
* */
public static String getStrMonth(int iI, String strFormat) {
String str = DateUtils.getLastTimeString(iI, "yyyy-MM-dd");
String[] strList = str.split("-");
return strList[1];
}
/**
* 获得昨天的日
* */
public static String getStrDay(int iI, String strFormat) {
String str = DateUtils.getLastTimeString(iI, "yyyy-MM-dd");
String[] strList = str.split("-");
return strList[2];
}
public static long getSystemtime() {
return System.currentTimeMillis();
}
/**
* 获得一个时间,增加或是减少几个小时候的字符串日期.
*
* */
public static String getStrCalHour(int iI, String strFormat) {
DateFormat df = new SimpleDateFormat(strFormat);
Calendar c = Calendar.getInstance();
c.add(Calendar.HOUR, iI); // 目前時間加3小時
return df.format(c.getTime());
}
// 将时间转换成 年-月-日 格式
public static String toDate(Date createDate) {
SimpleDateFormat formater = new SimpleDateFormat("yyyy-MM-dd");
return formater.format(createDate);
}
// 将时间转换成 年-月 格式
public static String toMonth(Date createDate) {
SimpleDateFormat formater = new SimpleDateFormat("yyyy-MM");
return formater.format(createDate);
}
// 返回当天日期的前一天
public static String getYesterday(String dt) throws ParseException {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Calendar cal = Calendar.getInstance();
cal.setTime(sdf.parse(dt));
cal.add(Calendar.DATE, -1);
String yesterday = sdf.format(cal.getTime());
return yesterday;
}
public static String getYesday(Date date, String strPatten, int iN) {
Calendar c = Calendar.getInstance();
c.setTime(date);
int day = c.get(Calendar.DATE);
c.set(Calendar.DATE, day - iN);
String dayBefore = new SimpleDateFormat(strPatten).format(c.getTime());
return dayBefore;
}
public static String getYesterday(String strDate, String strPatten, int iN) {
Date date = DateUtils.getDate(strDate);
Calendar c = Calendar.getInstance();
c.setTime(date);
int day = c.get(Calendar.DATE);
c.set(Calendar.DATE, day - iN);
String dayBefore = new SimpleDateFormat(strPatten).format(c.getTime());
return dayBefore;
}
public static String getMonthShort(String strDate, int plusMonthNum) {
Date date = DateUtils.getDate(strDate);
Calendar cal = Calendar.getInstance();
cal.setTime(date);
cal.add(Calendar.MONTH, plusMonthNum);
cal.set(Calendar.DAY_OF_MONTH, 1);
return toMonth(cal.getTime());
}
public static String getMonthLashDay(String strDate, int plusMonthNum) {
Date date = DateUtils.getDate(strDate);
Calendar cal = Calendar.getInstance();
cal.setTime(date);
cal.add(Calendar.MONTH, plusMonthNum);
cal.set(Calendar.DAY_OF_MONTH, cal.getActualMaximum(Calendar.DATE));
return new SimpleDateFormat("yyyy-MM-dd").format(cal.getTime());
}
/**
* @Function 获取时间，前面所有的时间，都是减少 n 天,前推多少天。
* */
public static String getYMDDate(String date, int In) {
Date dateYear = DateUtils.getDate(date);
date = DateUtils.getYesday(dateYear, "yyyy-MM-dd", In);
return date;
}
/**
* @Function 获取时间，前面所有的时间，都是减少 n 月，前推多少月。
* */
public static String getYMDate(String date, int In) {
Date dateYear = DateUtils.getDate(date);
date = DateUtils.getYesday(dateYear, "yyyy-MM", In);
return date;
}
/**
* 王展翅 得到当前日期时间,格式为yyyyMMdd
*
* @return String
*/
public static String getFormatTo_yyyymmdd(Date date, String strFormat)
throws Exception {
SimpleDateFormat formatter = new SimpleDateFormat(strFormat);
return formatter.format(date);
}
public static String strToDateDayTime(String date) {
SimpleDateFormat formatter = new SimpleDateFormat("yyyyMMdd");
formatter.setLenient(false);
Date newDate = null;
try {
newDate = formatter.parse(date);
formatter = new SimpleDateFormat("yyyy-MM-dd");
} catch (ParseException e) {
e.printStackTrace();
}
return formatter.format(newDate);
}
public static String strToDateHour(String date) {
SimpleDateFormat formatter = new SimpleDateFormat("yyyyMM");
formatter.setLenient(false);
Date newDate = null;
try {
newDate = formatter.parse(date);
formatter = new SimpleDateFormat("yyyy-MM");
} catch (ParseException e) {
e.printStackTrace();
}
return formatter.format(newDate);
}
public static String getDateByFormatAndNum(Date date, String strFormat,
int num) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.add(Calendar.DATE, num);
Date newDate = calendar.getTime();
SimpleDateFormat formatter = new SimpleDateFormat(strFormat);
return formatter.format(newDate);
}
public static String getDateByFormat(Date date, String strFormat) {
SimpleDateFormat formatter = new SimpleDateFormat(strFormat);
return formatter.format(date);
}
public static Date stringToDateByFormat(String dayString, String strFormat) {
SimpleDateFormat formatter = new SimpleDateFormat(strFormat);
Date date = null;
try {
date = formatter.parse(dayString);
} catch (ParseException e) {
e.printStackTrace();
}
return date;
}
public static Date stringToStringDateByFormat(String dayString, String strFormat) {
SimpleDateFormat formatter = new SimpleDateFormat(strFormat);
Date date = null;
try {
date = formatter.parse(dayString);
} catch (ParseException e) {
e.printStackTrace();
}
return date;
}
/**
* 取当前时间的前几天
*
* @param date
* @return
*/
public static String getNextDay(Integer anyday) {
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");// 设置日期格式
Calendar calendar = Calendar.getInstance();
calendar.setTime(new Date());
calendar.add(Calendar.DAY_OF_MONTH, anyday);
Date date1 = calendar.getTime();
String time = df.format(date1);
// System.out.println(time);
return time;
}
/**
* 取当前时间的前几天
*
* @param date
* @return
*/
public static String getNextDay1(Integer anyday, String daytime) {
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");// 设置日期格式
Calendar calendar = Calendar.getInstance();
try {
calendar.setTime(df.parse(daytime));
} catch (ParseException e) {
e.printStackTrace();
}
calendar.add(Calendar.DAY_OF_MONTH, anyday);
Date date1 = calendar.getTime();
String time = df.format(date1);
// System.out.println(time);
return time;
}
public static String getNextMon(Integer anymon, String daytime) {
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM");// 设置日期格式
Calendar calendar = Calendar.getInstance();
try {
calendar.setTime(df.parse(daytime));
} catch (ParseException e) {
e.printStackTrace();
}
calendar.add(Calendar.MONTH, anymon);
Date date1 = calendar.getTime();
String time = df.format(date1);
// System.out.println(time);
return time;
}
public static String dateFormat(int number,String datetime) {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM");
Date date = null;
try {
date = sdf.parse(datetime);
} catch (ParseException e) {
e.printStackTrace();
}
Calendar cl = Calendar.getInstance();
cl.setTime(date);
cl.add(Calendar.MONTH,number);
date = cl.getTime();
return sdf.format(date);
}
/**
* 取当前时间的前几天
*
* @param date
* @return
*/
public static String getjitianDay(Integer anyday, Date daydate) {
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");// 设置日期格式
Calendar calendar = Calendar.getInstance();
calendar.setTime(daydate);
calendar.add(Calendar.DAY_OF_MONTH, anyday);
Date date1 = calendar.getTime();
String time = df.format(date1);
// System.out.println(time);
return time;
}
/**
* 字符串时间 按照指定格式返回时间字符串
*
* @param oldDate
* 旧时间(字符串类型)
* @param oldDateFormat
* 旧时间格式
* @param newDateFormat
* 生成时间格式
* @return
*/
public static String stringDateToStringDate(String oldDate,
String oldDateFormat, String newDateFormat) {
SimpleDateFormat formatter = new SimpleDateFormat(oldDateFormat);
SimpleDateFormat newFormatter = new SimpleDateFormat(newDateFormat);
Date date = null;
String str = null;
try {
date = formatter.parse(oldDate);
str = newFormatter.format(date);
} catch (ParseException e) {
e.printStackTrace();
}
return str;
}
/**
* <li>功能描述：时间相减得到天数
*
* @param beginDateStr
* @param endDateStr
* @return long
* @author Administrator
*/
public static long getDaySub(String beginDateStr, String endDateStr) {
long day = 0;
java.text.SimpleDateFormat format = new java.text.SimpleDateFormat(
"yyyy-MM-dd");
java.util.Date beginDate;
java.util.Date endDate;
try {
beginDate = format.parse(beginDateStr);
endDate = format.parse(endDateStr);
day = (endDate.getTime() - beginDate.getTime())
/ (24 * 60 * 60 * 1000);
// System.out.println("相隔的天数="+day);
} catch (Exception e) {
e.printStackTrace();
}
return day;
}
public static void main(String[] args) throws Exception {
// ISO_DATETIME_TIME_ZONE_FORMAT
// System.out.println(DateUtils.getLastTimeString(0, "yyyy-MM-dd"));
// System.out.println(DateUtils.getLastTimeString(-1,
// "yyyy-MM-dd HH:mm:ss"));
// Date dateYear = DateUtils.getDate("2017-12");
// String strYearMonth = DateUtils.getYmdStr(dateYear, "yyyy-MM");
//
// Date d1 = DateUtils.getDate("2017-12-26");
// String ss1 = DateUtils.getYesday(d1,"yyyy-MM-dd",7);
// String ss2 = DateUtils.getFormatTo_yyyymmdd(d1,"yyyyMMdd");
// System.out.println(ss2);
System.out.println(DateUtils.getMonthLashDay("2017-11-29", -1));
System.out.println(DateUtils.getYMDDate("2017-12-29", 30));
System.out.println(DateUtils.getYMDate("2017-12", 2));
// 20171226
// 2017-12-26 19:32:12
System.out.print(DateUtils.getYesday(new Date(), "yyyyMMdd", 1));
}
}
原创文章，作者：Maggie-Hunter，如若转载，请注明出处：https://blog.ytso.com/tech/pnotes/17861.html