日期工具类
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package com.hofon.appserver.web.util;import java.sql.Timestamp;import java.text.DateFormat;import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.ArrayList;import java.util.Calendar;import java.util.Date;import java.util.GregorianCalendar;import java.util.List;/** * @description (日期工具类) * @date 2017年9月5日 */public class DateUtils { public static final String[] zodiacArr = { "猴", "鸡", "狗", "猪", "鼠", "牛", "虎", "兔", "龙", "蛇", "马", "羊" }; public static final String[] constellationArr = { "水瓶座", "双鱼座", "白羊座", "金牛座", "双子座", "巨蟹座", "狮子座", "处女座", "天秤座", "天蝎座", "射手座", "魔羯座" }; public static final int[] constellationEdgeDay = { 20, 19, 21, 21, 21, 22, 23, 23, 23, 23, 22, 22 }; /** * 根据日期获取生肖 * @return */ public static String getZodica(Date date) { Calendar cal = Calendar.getInstance(); cal.setTime(date); return zodiacArr[cal.get(Calendar.YEAR) % 12]; } /** * 根据日期获取星座 * @return */ public static String getConstellation(Date date) { if (date == null) { return ""; } Calendar cal = Calendar.getInstance(); cal.setTime(date); int month = cal.get(Calendar.MONTH); int day = cal.get(Calendar.DAY_OF_MONTH); if (day < constellationEdgeDay[month]) { month = month - 1; } if (month >= 0) { return constellationArr[month]; } // default to return 魔羯 return constellationArr[11]; } /** * 获取当天的开始时间 * @return yyyy-MM-dd HH:mm:ss 格式 */ public static java.util.Date getDayBegin() { /* Calendar cal = new GregorianCalendar(); cal.set(Calendar.HOUR_OF_DAY, 0); cal.set(Calendar.MINUTE, 0); cal.set(Calendar.SECOND, 0); cal.set(Calendar.MILLISECOND, 0); return cal.getTime();*/ Date date = new Date(); return getDayStartTime(date); } /** * 获取当天的结束时间 * @return yyyy-MM-dd HH:mm:ss 格式 */ public static java.util.Date getDayEnd() { /*Calendar cal = new GregorianCalendar(); cal.set(Calendar.HOUR_OF_DAY, 23); cal.set(Calendar.MINUTE, 59); cal.set(Calendar.SECOND, 59); return cal.getTime();*/ Date date = new Date(); return getDayEndTime(date); } /** * 获取昨天的开始时间 * @return 默认格式 Wed May 31 14:47:18 CST 2017 */ public static Date getBeginDayOfYesterday() { Calendar cal = new GregorianCalendar(); cal.setTime(getDayBegin()); cal.add(Calendar.DAY_OF_MONTH, -1); return cal.getTime(); } /** * 获取昨天的结束时间 * @return 默认格式 Wed May 31 14:47:18 CST 2017 */ public static Date getEndDayOfYesterDay() { Calendar cal = new GregorianCalendar(); cal.setTime(getDayEnd()); cal.add(Calendar.DAY_OF_MONTH, -1); return cal.getTime(); } /** * 获取明天的开始时间 * @return 默认格式 Wed May 31 14:47:18 CST 2017 */ public static Date getBeginDayOfTomorrow() { Calendar cal = new GregorianCalendar(); cal.setTime(getDayBegin()); cal.add(Calendar.DAY_OF_MONTH, 1); return cal.getTime(); } /** * 获取明天的结束时间 * @return 默认格式 Wed May 31 14:47:18 CST 2017 */ public static Date getEndDayOfTomorrow() { Calendar cal = new GregorianCalendar(); cal.setTime(getDayEnd()); cal.add(Calendar.DAY_OF_MONTH, 1); return cal.getTime(); } /** * 获取本周的开始时间 * @return yyyy-MM-dd HH:mm:ss 格式 */ public static Date getBeginDayOfWeek() { Date date = new Date(); Calendar cal = Calendar.getInstance(); cal.setTime(date); int dayofweek = cal.get(Calendar.DAY_OF_WEEK); if (dayofweek == 1) { dayofweek += 7; } cal.add(Calendar.DATE, 2 - dayofweek); return getDayStartTime(cal.getTime()); } /** * 获取本周的结束时间 * @return yyyy-MM-dd HH:mm:ss 格式 */ public static Date getEndDayOfWeek(){ Calendar cal = Calendar.getInstance(); cal.setTime(getBeginDayOfWeek()); cal.add(Calendar.DAY_OF_WEEK, 6); Date weekEndSta = cal.getTime(); return getDayEndTime(weekEndSta); } /** * 获取本月的开始时间 * @return yyyy-MM-dd HH:mm:ss 格式 */ public static Date getBeginDayOfMonth() { Calendar calendar = Calendar.getInstance(); calendar.set(getNowYear(), getNowMonth() - 1, 1); return getDayStartTime(calendar.getTime()); } /** * 获取本月的结束时间 * @return yyyy-MM-dd HH:mm:ss 格式 */ public static Date getEndDayOfMonth() { Calendar calendar = Calendar.getInstance(); calendar.set(getNowYear(), getNowMonth() - 1, 1); int day = calendar.getActualMaximum(5); calendar.set(getNowYear(), getNowMonth() - 1, day); return getDayEndTime(calendar.getTime()); } /** * 获取本年的开始时间 * @return yyyy-MM-dd HH:mm:ss 格式 */ public static java.util.Date getBeginDayOfYear() { Calendar cal = Calendar.getInstance(); cal.set(Calendar.YEAR, getNowYear()); // cal.set cal.set(Calendar.MONTH, Calendar.JANUARY); cal.set(Calendar.DATE, 1); return getDayStartTime(cal.getTime()); } /** * 获取本年的结束时间 * @return yyyy-MM-dd HH:mm:ss 格式 */ public static java.util.Date getEndDayOfYear() { Calendar cal = Calendar.getInstance(); cal.set(Calendar.YEAR, getNowYear()); cal.set(Calendar.MONTH, Calendar.DECEMBER); cal.set(Calendar.DATE, 31); return getDayEndTime(cal.getTime()); } /** * 获取某个日期的开始时间 * @param d * @return yyyy-MM-dd HH:mm:ss 格式 */ public static Timestamp getDayStartTime(Date d) { Calendar calendar = Calendar.getInstance(); if(null != d) calendar.setTime(d); calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), 0, 0, 0); calendar.set(Calendar.MILLISECOND, 0); return new Timestamp(calendar.getTimeInMillis()); } /** * 获取某个日期的结束时间 * @param d * @return yyyy-MM-dd HH:mm:ss 格式 */ public static Timestamp getDayEndTime(Date d) { Calendar calendar = Calendar.getInstance(); if(null != d) calendar.setTime(d); calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), 23, 59, 59); calendar.set(Calendar.MILLISECOND, 999); return new Timestamp(calendar.getTimeInMillis()); } /** * 获取某年某月的第一天 * @param year * @param month * @return */ public static Date getStartMonthDate(int year, int month) { Calendar calendar = Calendar.getInstance(); calendar.set(year, month - 1, 1); return calendar.getTime(); } /** * 获取某年某月的最后一天 * @param year * @param month * @return */ public static Date getEndMonthDate(int year, int month) { Calendar calendar = Calendar.getInstance(); calendar.set(year, month - 1, 1); int day = calendar.getActualMaximum(5); calendar.set(year, month - 1, day); return calendar.getTime(); } /** * 获取今年是哪一年 * @return */ public static Integer getNowYear() { Date date = new Date(); GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance(); gc.setTime(date); return Integer.valueOf(gc.get(1)); } /** * 获取本月是哪一月 * @return */ public static int getNowMonth() { Date date = new Date(); GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance(); gc.setTime(date); return gc.get(2) + 1; } /** * 两个日期相减得到的天数 * @param beginDate * @param endDate * @return */ public static int getDiffDays(Date beginDate, Date endDate) { if (beginDate == null || endDate == null) { throw new IllegalArgumentException("getDiffDays param is null!"); } long diff = (endDate.getTime() - beginDate.getTime()) / (1000 * 60 * 60 * 24); int days = new Long(diff).intValue(); return days; } /** * 两个日期相减得到的毫秒数 * @param beginDate * @param endDate * @return */ public static long dateDiff(Date beginDate, Date endDate) { long date1ms = beginDate.getTime(); long date2ms = endDate.getTime(); return date2ms - date1ms; } /** * 获取两个日期中的最大日期 * @param beginDate * @param endDate * @return */ public static Date max(Date beginDate, Date endDate) { if (beginDate == null) { return endDate; } if (endDate == null) { return beginDate; } if (beginDate.after(endDate)) { return beginDate; } return endDate; } /** * 获取两个日期中的最小日期 * @param beginDate * @param endDate * @return */ public static Date min(Date beginDate, Date endDate) { if (beginDate == null) { return endDate; } if (endDate == null) { return beginDate; } if (beginDate.after(endDate)) { return endDate; } return beginDate; } /** * 返回某月该季度的第一个月 * @param date * @return */ public static Date getFirstSeasonDate(Date date) { final int[] SEASON = { 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4 }; Calendar cal = Calendar.getInstance(); cal.setTime(date); int sean = SEASON[cal.get(Calendar.MONTH)]; cal.set(Calendar.MONTH, sean * 3 - 3); return cal.getTime(); } /** * 返回某个日期下几天的日期 * @param date * @param i * @return */ public static Date getNextDay(Date date, int i) { Calendar cal = new GregorianCalendar(); cal.setTime(date); cal.set(Calendar.DATE, cal.get(Calendar.DATE) + i); return cal.getTime(); } /** * 返回某个日期前几天的日期 * @param date * @param i * @return */ public static Date getFrontDay(Date date, int i) { Calendar cal = new GregorianCalendar(); cal.setTime(date); cal.set(Calendar.DATE, cal.get(Calendar.DATE) - i); return cal.getTime(); } /** * 获取某年某月到某年某月按天的切片日期集合（间隔天数的日期集合） * @param beginYear * @param beginMonth * @param endYear * @param endMonth * @param k * @return */ public static List<List<Date>> getTimeList(int beginYear, int beginMonth, int endYear, int endMonth, int k) { List<List<Date>> list = new ArrayList<List<Date>>(); if (beginYear == endYear) { for (int j = beginMonth; j <= endMonth; j++) { list.add(getTimeList(beginYear, j, k)); } } else { { for (int j = beginMonth; j < 12; j++) { list.add(getTimeList(beginYear, j, k)); } for (int i = beginYear + 1; i < endYear; i++) { for (int j = 0; j < 12; j++) { list.add(getTimeList(i, j, k)); } } for (int j = 0; j <= endMonth; j++) { list.add(getTimeList(endYear, j, k)); } } } return list; } /** * 获取某年某月按天切片日期集合（某个月间隔多少天的日期集合） * @param beginYear * @param beginMonth * @param k * @return */ public static List<Date> getTimeList(int beginYear, int beginMonth, int k) { List<Date> list = new ArrayList<Date>(); Calendar begincal = new GregorianCalendar(beginYear, beginMonth, 1); int max = begincal.getActualMaximum(Calendar.DATE); for (int i = 1; i < max; i = i + k) { list.add(begincal.getTime()); begincal.add(Calendar.DATE, k); } begincal = new GregorianCalendar(beginYear, beginMonth, max); list.add(begincal.getTime()); return list; } /** * 格式化日期 * yyyy-MM-dd HH:mm:ss * @Description: * @param @param date * @param @return * */ private static Date format(Date date) { SimpleDateFormat sd = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); try { date = sd.parse(sd.format(date)); } catch (ParseException e) { e.printStackTrace(); } return date; } public static void main(String args[]){ Date date = new Date(); System.out.println(getEndMonthDate(2017, 5)); System.out.println(getBeginDayOfWeek()); System.out.println(getBeginDayOfMonth()); System.out.println(getBeginDayOfYear()); DateFormat df = new SimpleDateFormat("yyyy-MM-dd"); try { Date date1 = df.parse("1995-01-11"); System.out.println(""+getZodica(date1)); }catch (Exception e){ e.printStackTrace(); } }}阅读全文
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