package net.caiban.utils;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.Locale;
/**
* 格式定义如下： y 年号，如 1996 M 月份，如 July 或者 07 d 月中第几天，如 12 H 小时(24制)，如 0、17 m 分钟,如 32 s 钞钟，如55 S 微钞，如978 E 星期几，如 Tuesday D
* 一年中的第几天，如 189 w week in year (Number) 27 W week in month (Number) 2 a am/pm marker (Text) PM k hour in day (1~24)
* (Number) 24 K hour in am/pm (0~11) (Number) 0 z time zone (Text) Pacific Standard Time ' escape for text (Delimiter)
* '' single quote (Literal) '
*
* @throws ParseException
* 用法： DateUtil.getTimeStrByLongTime(1000L * 60L * 60L * 25L * 30L * 12L) 1年15天 <br>
* DateUtil.toString(new Date(),"yyyy年MM月dd日HH时mm分ss秒") 2007年12月27日10时49分52秒 <br>
* DateUtil.toString(DateUtil.getDate(new Date(),"yyyy-MM-DD"),"yyyy年MM月dd日HH时mm分ss秒") 2007年12月27日00时00分00秒 <br>
* DateUtil.toString(DateUtil.getDate("2005-1-1","yyyy-MM-DD" ),"yyyy年MM月dd日HH时mm分ss秒") 2005年01月01日00时00分00秒 <br>
* DateUtil.toString(DateUtil.getDateAfterDays(new Date(),-10),"yyyy年MM月dd日HH时mm分ss秒") 2007年12月17日10时49分52秒 <br>
* DateUtil.toString(DateUtil.getDateAfterMonths(new Date(),-2),"yyyy年MM月dd日HH时mm分ss秒") 2007年10月27日10时49分52秒 <br>
* DateUtil.toString(new Date(12345222),"yyyy年MM月dd日HH时mm分ss秒") 1970年01月01日11时25分45秒 <br>
*/
public class DateUtil {
/**
* desc：Date转换为String
*
* @param date
* 需要转换的date
* @param format
* 格式字符串
* @return 返回按照格式转化后的字符串 DateUtil.toString(new Date(),"yyyy-MM-dd HH:mm:ss SSS")
*/
public static String toString(Date date, String format) {
if (date != null) {
SimpleDateFormat dateformatter = new SimpleDateFormat(format);
String dateString = dateformatter.format(date);
return dateString;
} else {
return null;
}
}
/**
* desc：Date时间转换为格式化后的Date时间
*
* @param date
* 需要转换的date
* @param format
* 格式字符串
* @return 返回按照格式转化后的Date 如：DateUtil.getDate(new Date(),"yyyy-MM-dd")
*/
public static Date getDate(Date date, String format) throws ParseException {
if (date == null)
return null;
SimpleDateFormat dateformatter = new SimpleDateFormat(format);
return dateformatter.parse(dateformatter.format(date));
}
/**
* desc：String时间转换为格式化Date时间
*
* @param date
* 需要转换的String
* @param format
* 格式字符串
* @return 返回按照格式转化后的Date 如：DateUtil.getDate("2007-11-01","yyyy-MM-dd")
*/
public static Date getDate(String dateStr, String format) throws ParseException {
SimpleDateFormat dateformatter = new SimpleDateFormat(format);
return dateformatter.parse(dateStr);
}
/**
* desc：String时间转换为格式化Date时间
*
* @param date
* 需要转换的String
* @param format
* 格式字符串
* @param locale
* 特定地区
* @return 返回按照格式转化后的Date 如：DateUtil.getDate("2007-11-01","yyyy-MM-dd",Locale.ENGLISH)
*/
public static Date getDate(String dateStr, String format, Locale locale) throws ParseException {
SimpleDateFormat dateformatter = new SimpleDateFormat(format, locale);
return dateformatter.parse(dateStr);
}
/**
* desc：获得距今天一定时间后的时间
*
* @param date
* 转换前的时间
* @param field
* 增减单位
* @param add_days
* 增减数量
* @return 返回增减单位后的Date 如：DateUtil.getDateAfter(new Date(),Calendar.MONTH,-2) 2个月前的时间
*/
public static Date getDateAfter(Date date, int field, int add_days) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.add(field, add_days);
return calendar.getTime();
}
/**
* desc：获得格式化时间，时间为距几天天数
*
* @param date
* 转换前的时间
* @param add_days
* 天数
* @return 返回增加天数之后的Date 如：DateUtil.getDateAfterDays(new Date(),-1) 一天前的时间
*/
public static Date getDateAfterDays(Date date, int add_days) {
Calendar time = Calendar.getInstance();
time.setTime(date);
time.add(Calendar.DATE, add_days);
return time.getTime();
}
/**
* desc：获得格式化时间，时间为距今天月数
*
* @param date
* 转换前的时间
* @param add_months
* 月数
* @return 返回增减月数后的Date 如：DateUtil.getDateAfterMonths(new Date(),-2) 2个月前的时间
*/
public static Date getDateAfterMonths(Date date, int add_months) {
Calendar time = Calendar.getInstance();
time.setTime(date);
time.add(Calendar.MONTH, add_months);
return time.getTime();
}
/**
* desc：获得用时时间，12000=12秒
*
* @param time_misec
* 毫秒数
* @return 返回用时时间字符串 如：DateUtil.getTimeStrByLongTime(12010) 12秒10毫秒
*/
public static String getTimeStrByLongTime(long time_misec) {
StringBuffer bu = new StringBuffer(20);
long parent = time_misec;
long leav = parent % 1000;
if (leav != 0) {
bu.insert(0, leav + "毫秒");
}
long child = parent / 1000;
if (child == 0) {
return bu.toString();
}
leav = child % 60;
if (leav != 0) {
bu.insert(0, leav + "秒");
}
child = child / 60;
if (child == 0) {
return bu.toString();
}
leav = child % 60;
if (leav != 0) {
bu.insert(0, leav + "分钟");
}
child = child / 60;
if (child == 0) {
return bu.toString();
}
leav = child % 24;
if (leav != 0) {
bu.insert(0, leav + "小时");
}
child = child / 24;
if (child == 0) {
return bu.toString();
}
leav = child % 30;
if (leav != 0) {
bu.insert(0, leav + "天");
}
child = child / 30;
if (child == 0) {
return bu.toString();
}
leav = child % 12;
if (leav != 0) {
bu.insert(0, leav + "月");
}
child = child / 12;
if (child == 0) {
return bu.toString();
}
bu.insert(0, child + "年");
return bu.toString();
}
/**
* desc：获取相距时间time参数为年月日时分秒的时间
*
* @param int...time 年月日时分秒顺序输入参数,允许部分参数
* @return 返回时间 如：DateUtil.getTimeAfterTime(2007,12,26)
*/
public static Date getTimeAfterTime(int... time) {
Calendar now = new GregorianCalendar();
if ((time == null) || (time.length == 0)) {
return now.getTime();
}
int len = time.length;
int[] times = time;
for (int i = 0; i < len; i++) {
switch (i) {
case 0:
now.add(Calendar.YEAR, times[i]);
break;
case 1:
now.add(Calendar.MONTH, times[i]);
break;
case 2:
now.add(Calendar.DATE, times[i]);
break;
case 3:
now.add(Calendar.HOUR, times[i]);
break;
case 4:
now.add(Calendar.MINUTE, times[i]);
case 5:
now.add(Calendar.SECOND, times[i]);
break;
}
}
return now.getTime();
}
/**
* desc：获取上月第一天的时间
*
* @return 返回上月第一天的时间 如：DateUtil.getLastMonthFistDay()
*/
public static Date getLastMonthFistDay() {
Calendar now = new GregorianCalendar();
now.add(Calendar.MONTH, -1);
Calendar stdCal = new GregorianCalendar(now.get(Calendar.YEAR), now.get(Calendar.MONTH), 1);
return stdCal.getTime();
}
/**
* desc：获取本月第一天的时间
*
* @return 返回本月第一天的时间 如：DateUtil.getNowMonthFirstDay()
*/
public static Date getNowMonthFirstDay() {
Calendar now = new GregorianCalendar();
int curYear = now.get(Calendar.YEAR);
int curMonth = now.get(Calendar.MONTH);
Calendar stdCal = new GregorianCalendar(curYear, curMonth, 1);
return stdCal.getTime();
}
/**
* @return 精确到秒的时间截,long格式
*/
public static long getSecTimeMillis() {
return System.currentTimeMillis() / 1000l;
}
/**
* @param day
* 与当前日期的天数差,+X表示后面X天,-X表示前面X天,0表示今天
* @return 返回与今天相差day天的零点的时间截,精确到秒
*/
public static long getTheDayZero(int day) {
Calendar calendar = Calendar.getInstance(); // 当前日期
calendar.add(Calendar.DATE, day);
calendar.set(Calendar.HOUR_OF_DAY, 0);
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.SECOND, 0);
return calendar.getTime().getTime() / 1000l;
}
public static long getTheDayZero(Date day,int intervalDays) {
Calendar calendar = Calendar.getInstance(); // 当前日期
calendar.setTime(day);
calendar.add(Calendar.DATE, intervalDays);
calendar.set(Calendar.HOUR_OF_DAY, 0);
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.SECOND, 0);
return calendar.getTime().getTime() / 1000l;
}
//获取指定日期的年份
public static int getYearForDate(Date day) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(day);
return calendar.get(Calendar.YEAR);
}
//获取指定日期的月份 从1开始，默认为0
public static int getMonthForDate(Date day) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(day);
return calendar.get(Calendar.MONTH)+1;
}
//获取指定日期在月份中的天序列
public static int getDayOfMonthForDate(Date day) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(day);
return calendar.get(Calendar.DAY_OF_MONTH);
}
//获取指定日期的星期序列（星期日开始）
public static int getDayOfWeekForDate(Date day) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(day);
return calendar.get(Calendar.DAY_OF_WEEK);
}
/**
* @param date
* @return 返回指定日期时间的时间截 如：DateUtil.getMillis(new Date());
*/
public static long getMillis(Date date) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
return calendar.getTimeInMillis();
}
public static void main(String[] args) throws ParseException {
// String[] ids = TimeZone.getAvailableIDs(-8 * 60 * 60 * 1000);
// // if no ids were returned, something is wrong. get out.
// if (ids.length == 0)
// System.exit(0);
//
// // begin output
// System.out.println("Current Time");
//
// // create a Pacific Standard Time time zone
// SimpleTimeZone pdt = new SimpleTimeZone(-8 * 60 * 60 * 1000, ids[0]);
//
// // set up rules for daylight savings time
// pdt.setStartRule(Calendar.APRIL, 1, Calendar.SUNDAY, 2 * 60 * 60 * 1000);
// pdt.setEndRule(Calendar.OCTOBER, -1, Calendar.SUNDAY, 2 * 60 * 60 * 1000);
//
// // create a GregorianCalendar with the Pacific Daylight time zone
// // and the current date and time
Calendar calendar = new GregorianCalendar();
System.out.println(Calendar.getInstance().getClass().getName());
System.out.println(calendar.getClass().getName());
Date trialTime = getDate("2011-01-01", "yyyy-MM-dd");
calendar.setTime(trialTime);
// print out a bunch of interesting things
System.out.println("ERA: " + calendar.get(Calendar.ERA));
System.out.println("YEAR: " + calendar.get(Calendar.YEAR));
System.out.println("MONTH: " + calendar.get(Calendar.MONTH));
System.out.println("WEEK_OF_YEAR: " + calendar.get(Calendar.WEEK_OF_YEAR));
System.out.println("WEEK_OF_MONTH: " + calendar.get(Calendar.WEEK_OF_MONTH));
System.out.println("DATE: " + calendar.get(Calendar.DATE));
System.out.println("DAY_OF_MONTH: " + calendar.get(Calendar.DAY_OF_MONTH));
System.out.println("DAY_OF_YEAR: " + calendar.get(Calendar.DAY_OF_YEAR));
System.out.println("DAY_OF_WEEK: " + calendar.get(Calendar.DAY_OF_WEEK));
System.out.println(toString(trialTime, "yyyy-MM-dd"));
//calendar.add(Calendar.DATE, -calendar.get(Calendar.DAY_OF_WEEK) + 1);
System.out.println(toString(calendar.getTime(), "yyyy-MM-dd"));
System.out.println("DAY_OF_WEEK: " + calendar.get(Calendar.DAY_OF_WEEK));
System.out.println("DAY_OF_WEEK_IN_MONTH: " + calendar.get(Calendar.DAY_OF_WEEK_IN_MONTH));
System.out.println("AM_PM: " + calendar.get(Calendar.AM_PM));
System.out.println("HOUR: " + calendar.get(Calendar.HOUR));
System.out.println("HOUR_OF_DAY: " + calendar.get(Calendar.HOUR_OF_DAY));
System.out.println("MINUTE: " + calendar.get(Calendar.MINUTE));
System.out.println("SECOND: " + calendar.get(Calendar.SECOND));
System.out.println("MILLISECOND: " + calendar.get(Calendar.MILLISECOND));
System.out.println("ZONE_OFFSET: "
+ (calendar.get(Calendar.ZONE_OFFSET) / (60 * 60 * 1000)));
System.out.println("DST_OFFSET: " + (calendar.get(Calendar.DST_OFFSET) / (60 * 60 * 1000)));
System.out.println("Current Time, with hour reset to 3");
calendar.clear(Calendar.HOUR_OF_DAY); // so doesn't override
calendar.set(Calendar.HOUR, 3);
System.out.println("ERA: " + calendar.get(Calendar.ERA));
System.out.println("YEAR: " + calendar.get(Calendar.YEAR));
System.out.println("MONTH: " + calendar.get(Calendar.MONTH));
System.out.println("WEEK_OF_YEAR: " + calendar.get(Calendar.WEEK_OF_YEAR));
System.out.println("WEEK_OF_MONTH: " + calendar.get(Calendar.WEEK_OF_MONTH));
System.out.println("DATE: " + calendar.get(Calendar.DATE));
System.out.println("DAY_OF_MONTH: " + calendar.get(Calendar.DAY_OF_MONTH));
System.out.println("DAY_OF_YEAR: " + calendar.get(Calendar.DAY_OF_YEAR));
System.out.println("DAY_OF_WEEK: " + calendar.get(Calendar.DAY_OF_WEEK));
System.out.println("DAY_OF_WEEK_IN_MONTH: " + calendar.get(Calendar.DAY_OF_WEEK_IN_MONTH));
System.out.println("AM_PM: " + calendar.get(Calendar.AM_PM));
System.out.println("HOUR: " + calendar.get(Calendar.HOUR));
System.out.println("HOUR_OF_DAY: " + calendar.get(Calendar.HOUR_OF_DAY));
System.out.println("MINUTE: " + calendar.get(Calendar.MINUTE));
System.out.println("SECOND: " + calendar.get(Calendar.SECOND));
System.out.println("MILLISECOND: " + calendar.get(Calendar.MILLISECOND));
System.out.println("ZONE_OFFSET: "
+ (calendar.get(Calendar.ZONE_OFFSET) / (60 * 60 * 1000))); // in hours
System.out.println("DST_OFFSET: " + (calendar.get(Calendar.DST_OFFSET) / (60 * 60 * 1000))); // in hours
System.out.println(toString(new Date(getTheDayZero(new Date(),0)*1000),"yyyy-MM-dd HH:mm:ss"));
//System.out.println(DateUtil.getIntervalDays(DateUtil.getDate("2014-02-14", "yyyy-MM-dd"), DateUtil.getDate("2012-11-13", "yyyy-MM-dd")));
}
/**
* 判断是否润年
*
* <pre>
* 1.被400整除是闰年
* 2.能被4整除同时不能被100整除则是闰年
* </pre>
*
* @param year
* @return
*/
public static boolean isLeapYear(Integer year) {
return (year % 400) == 0 || ((year % 4) == 0 && (year % 100) != 0);
}
/**
* 比较两个日期相差的天数（非严格意义上的天，忽略小时和分）
*
* @param fDate
* 较新的日期
* @param oDate
* 较老的日期
* @return
* @throws ParseException
*/
public static int getIntervalDays(Date fDate, Date oDate) throws ParseException {
String fDate1 = toString(fDate, "yyyyMMdd");
String oDate1 = toString(oDate, "yyyyMMdd");
java.text.SimpleDateFormat df = new java.text.SimpleDateFormat("yyyyMMdd");
java.util.Date cDate = df.parse(fDate1);
java.util.Date dDate = df.parse(oDate1);
return (int) ((cDate.getTime() - dDate.getTime()) / (24 * 60 * 60 * 1000));
}
/**
* 得到本周第一天
*
* @return date
*/
public static Date getFirstDateThisWeek() {
Calendar cal = Calendar.getInstance();
int day_of_week = cal.get(Calendar.DAY_OF_WEEK) - 2;
cal.add(Calendar.DATE, -day_of_week);
return cal.getTime();
}
/**
* 得到本周最后一天
*
* @return date
*/
public static Date getLastDateThisWeek() {
Calendar cal = Calendar.getInstance();
cal.add(Calendar.DATE, 6);
return cal.getTime();
}
public static int getIntervalMonths(Date date1, Date date2) {
int iMonth = 0;
int flag = 0;
try {
Calendar objCalendarDate1 = Calendar.getInstance();
objCalendarDate1.setTime(date1);
Calendar objCalendarDate2 = Calendar.getInstance();
objCalendarDate2.setTime(date2);
if (objCalendarDate2.equals(objCalendarDate1))
return 0;
if (objCalendarDate1.after(objCalendarDate2)) {
Calendar temp = objCalendarDate1;
objCalendarDate1 = objCalendarDate2;
objCalendarDate2 = temp;
}
if (objCalendarDate2.get(Calendar.DAY_OF_MONTH) < objCalendarDate1
.get(Calendar.DAY_OF_MONTH))
flag = 1;
if (objCalendarDate2.get(Calendar.YEAR) > objCalendarDate1
.get(Calendar.YEAR))
iMonth = ((objCalendarDate2.get(Calendar.YEAR) - objCalendarDate1
.get(Calendar.YEAR))
* 12 + objCalendarDate2.get(Calendar.MONTH) - flag)
- objCalendarDate1.get(Calendar.MONTH);
else
iMonth = objCalendarDate2.get(Calendar.MONTH)
- objCalendarDate1.get(Calendar.MONTH) - flag;
} catch (Exception e) {
e.printStackTrace();
}
return iMonth;
}
public static Date getMondayFirstOfWeek(Date baseDate){
int dayofweek = getDayOfWeekForDate(baseDate);
dayofweek=dayofweek==1?dayofweek+7:dayofweek;
return getDateAfterDays(baseDate, 2-dayofweek);
}
}