一个不错的时间工具类TimeUtil

DBC 849 0
package co.yixiang.config;

import java.sql.Timestamp;

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.List;

import java.util.Locale;

import java.util.Random;






/**

 * 超详细的时间工具类

 * @author Administrator

 *

 */

public class TimeUtil {



    //============================借助Calendar类获取今天、昨天、本周、上周、本年及特定时间的开始时间和结束时间(返回类型为date类型)========================



    /**

     * 获取当天开始时间

     * @return

     */

    public static Date getDayBegin(){

        Calendar cal=Calendar.getInstance();

        cal.set(Calendar.HOUR_OF_DAY, 0);//0点

        cal.set(Calendar.MINUTE, 0);//0分

        cal.set(Calendar.SECOND, 0);//0秒

        cal.set(Calendar.MILLISECOND, 0);//0毫秒

        return cal.getTime();

    }





    /**

     * 获取当天结束时间

     * @return

     */

    public static Date getDayEnd(){

        Calendar cal=Calendar.getInstance();

        cal.set(Calendar.HOUR_OF_DAY, 23);//23点

        cal.set(Calendar.MINUTE, 59);//59分

        cal.set(Calendar.SECOND, 59);//59秒

        return cal.getTime();

    }





    /**

     * 获取昨天开始时间

     * @return

     */

    public static Date getBeginDayOfYesterday(){

        Calendar cal=Calendar.getInstance();

        cal.setTime(getDayBegin());//当天开始时间

        cal.add(Calendar.DAY_OF_MONTH, -1);//当天月份天数减1

        return cal.getTime();

    }





    /**

     * 获取昨天结束时间

     * @return

     */

    public static Date getEndDayOfYesterday(){

        Calendar cal=Calendar.getInstance();

        cal.setTime(getDayEnd());//当天结束时间

        cal.add(Calendar.DAY_OF_MONTH, -1);//当天月份天数减1

        return cal.getTime();

    }





    /**

     * 获取明天开始时间

     * @return

     */

    public static Date getBeginDayOfTomorrow(){

        Calendar cal=Calendar.getInstance();

        cal.setTime(getDayBegin());//当天开始时间

        cal.add(Calendar.DAY_OF_MONTH, 1);//当天月份天数加1

        return cal.getTime();

    }





    /**

     * 获取明天结束时间

     * @return

     */

    public static Date getEndDayOfTomorrow(){

        Calendar cal=Calendar.getInstance();

        cal.setTime(getDayEnd());//当天结束时间

        cal.add(Calendar.DAY_OF_MONTH, 1);//当天月份天数加1

        return cal.getTime();

    }





    /**

     * 获取某个日期的开始时间

     * @param d

     * @return

     */

    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

     */

    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());

    }





    /**

     * 获取本周的开始时间

     * @return

     */

    @SuppressWarnings("unused")

    public static Date getBeginDayOfWeek(){

        Date date=new Date();

        if(date==null){

            return null;

        }

        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

     */

    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);

    }





    /**

     * 获取上周开始时间

     */

    @SuppressWarnings("unused")

    public static Date getBeginDayOfLastWeek() {

        Date date=new Date();

        if (date==null) {

            return null;

        }

        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-7);

        return getDayStartTime(cal.getTime());

    }





    /**

     * 获取上周的结束时间

     * @return

     */

    public static Date getEndDayOfLastWeek(){

        Calendar cal=Calendar.getInstance();

        cal.setTime(getBeginDayOfLastWeek());

        cal.add(Calendar.DAY_OF_WEEK, 6);

        Date weekEndSta = cal.getTime();

        return getDayEndTime(weekEndSta);

    }





    /**

     * 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;

    }





    /**

     * 获取本月的开始时间

     * @return

     */

    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

     */

    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());

    }





    /**

     * 获取上月的开始时间

     * @return

     */

    public static Date getBeginDayOfLastMonth() {

        Calendar calendar=Calendar.getInstance();

        calendar.set(getNowYear(), getNowMonth()-2, 1);

        return getDayStartTime(calendar.getTime());

    }





    /**

     * 获取上月的结束时间

     * @return

     */

    public static Date getEndDayOfLastMonth() {

        Calendar calendar=Calendar.getInstance();

        calendar.set(getNowYear(), getNowMonth()-2, 1);

        int day = calendar.getActualMaximum(5);

        calendar.set(getNowYear(), getNowMonth()-2, day);

        return getDayEndTime(calendar.getTime());

    }





    /**

     * 获取本年的开始时间

     * @return

     */

    public static java.util.Date getBeginDayOfYear() {

        Calendar cal=Calendar.getInstance();

        cal.set(Calendar.YEAR, getNowYear());

        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

     */

    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());

    }





    /**

     * 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起

     * @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)) {//beginDate日期大于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;

    }





    /**

     * 获取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

     */

    @SuppressWarnings({ "unchecked", "rawtypes" })

    public static List getTimeList(int beginYear, int beginMonth, int k) {

        List list = new ArrayList();

        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;

    }





    /**

     * 获取某年某月到某年某月按天的切片日期集合(间隔天数的集合)

     * @param beginYear

     * @param beginMonth

     * @param endYear

     * @param endMonth

     * @param k

     * @return

     */

    @SuppressWarnings({ "rawtypes", "unchecked" })

    public static List getTimeList(int beginYear,int beginMonth,int endYear,int endMonth, int k) {

        List list = new ArrayList();

        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;

    }









    //=================================时间格式转换==========================



    /**

     * date类型进行格式化输出(返回类型:String)

     * @param date

     * @return

     */

    public static String dateFormat(Date date) {

        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

        String dateString = formatter.format(date);

        return dateString;

    }





    /**

     * 将"2015-08-31 21:08:06"型字符串转化为Date

     * @param str

     * @return

     * @throws ParseException

     */

    public static Date StringToDate(String str) throws ParseException{

        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

        Date date = (Date) formatter.parse(str);

        return date;

    }





    /**

     * 将CST时间类型字符串进行格式化输出

     * @param str

     * @return

     * @throws ParseException

     */

    public static String CSTFormat(String str) throws ParseException{

        SimpleDateFormat formatter = new SimpleDateFormat("EEE MMM dd HH:mm:ss zzz yyyy", Locale.US);

        Date date = (Date) formatter.parse(str);

        return dateFormat(date);

    }







    /**

     * 将long类型转化为Date

     * @param str

     * @return

     * @throws ParseException

     */

    public static Date LongToDare(long str) throws ParseException{

        return new Date(str * 1000);

    }









    //====================================其他常见日期操作方法======================



    /**

     * 判断当前日期是否在[startDate, endDate]区间

     *

     * @param startDate 开始日期

     * @param endDate 结束日期

     * @author jqlin

     * @return

     */

    public static boolean isEffectiveDate(Date startDate, Date endDate){

        if(startDate == null || endDate == null){

            return false;

        }

        long currentTime = new Date().getTime();

        if(currentTime >= startDate.getTime()

                && currentTime <= endDate.getTime()){

            return true;

        }

        return false;

    }





    /**

     * 得到二个日期间的间隔天数

     * @param secondString:后一个日期

     * @param firstString:前一个日期

     * @return

     */

    public static String getTwoDay(String secondString, String firstString) {

        SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd");

        long day = 0;

        try {

            java.util.Date secondTime = myFormatter.parse(secondString);

            java.util.Date firstTime = myFormatter.parse(firstString);

            day = (secondTime.getTime() - firstTime.getTime()) / (24 * 60 * 60 * 1000);

        } catch (Exception e) {

            return "";

        }

        return day + "";

    }





    /**

     * 时间前推或后推分钟,其中JJ表示分钟.

     * @param StringTime:时间

     * @param minute:分钟(有正负之分)

     * @return

     */

    public static String getPreTime(String StringTime, String minute) {

        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

        String mydate1 = "";

        try {

            Date date1 = format.parse(StringTime);

            long Time = (date1.getTime() / 1000) + Integer.parseInt(minute) * 60;

            date1.setTime(Time * 1000);

            mydate1 = format.format(date1);

        } catch (Exception e) {

            return "";

        }

        return mydate1;

    }





    /**

     * 将短时间格式字符串转换为时间 yyyy-MM-dd

     *

     * @param strDate

     * @return

     */

    public static Date strToDate(String strDate) {

        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");

        ParsePosition pos = new ParsePosition(0);

        Date strtodate = formatter.parse(strDate, pos);

        return strtodate;

    }







    /**

     * 得到一个时间延后或前移几天的时间

     * @param nowdate:时间

     * @param delay:前移或后延的天数

     * @return

     */

    public static String getNextDay(String nowdate, String delay) {

        try{

            SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");

            String mdate = "";

            Date d = strToDate(nowdate);

            long myTime = (d.getTime() / 1000) + Integer.parseInt(delay) * 24 * 60 * 60;

            d.setTime(myTime * 1000);

            mdate = format.format(d);

            return mdate;

        }catch(Exception e){

            return "";

        }

    }





    /**

     * 判断是否闰年

     * @param ddate

     * @return

     */

    public static boolean isLeapYear(String ddate) {

        /**

         * 详细设计: 1.被400整除是闰年,否则: 2.不能被4整除则不是闰年 3.能被4整除同时不能被100整除则是闰年

         * 3.能被4整除同时能被100整除则不是闰年

         */

        Date d = strToDate(ddate);

        GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();

        gc.setTime(d);

        int year = gc.get(Calendar.YEAR);

        if ((year % 400) == 0){

            return true;

        }else if ((year % 4) == 0){

            if ((year % 100) == 0){

                return false;

            }else{

                return true;

            }

        }else{

            return false;

        }

    }





    /**

     * 返回美国时间格式

     * @param str

     * @return

     */

    public static String getEDate(String str) {

        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");

        ParsePosition pos = new ParsePosition(0);

        Date strtodate = formatter.parse(str, pos);

        String j = strtodate.toString();

        String[] k = j.split(" ");

        return k[2] + k[1].toUpperCase() + k[5].substring(2, 4);

    }





    /**

     * 判断二个时间是否在同一个周

     * @param date1

     * @param date2

     * @return

     */

    public static boolean isSameWeekDates(Date date1, Date date2) {

        Calendar cal1 = Calendar.getInstance();

        Calendar cal2 = Calendar.getInstance();

        cal1.setTime(date1);

        cal2.setTime(date2);

        int subYear = cal1.get(Calendar.YEAR) - cal2.get(Calendar.YEAR);

        if(0 == subYear) {

            if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR)){

                return true;

            }

        }else if(1 == subYear && 11 == cal2.get(Calendar.MONTH)) {

            // 如果12月的最后一周横跨来年第一周的话则最后一周即算做来年的第一周

            if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR)){

                return true;

            }

        }else if (-1 == subYear && 11 == cal1.get(Calendar.MONTH)) {

            if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR)){

                return true;

            }

        }

        return false;

    }







    /**

     * 产生周序列,即得到当前时间所在的年度是第几周

     * @return

     */

    public static String getSeqWeek() {

        Calendar c = Calendar.getInstance(Locale.CHINA);

        String week = Integer.toString(c.get(Calendar.WEEK_OF_YEAR));

        if (week.length() == 1)

            week = "0" + week;

        String year = Integer.toString(c.get(Calendar.YEAR));

        return year +"年第"+ week+"周";

    }





    /**

     * 获得一个日期所在的周的星期几的日期,如要找出2002年2月3日所在周的星期一是几号

     * @param sdate:日期

     * @param num:星期几(星期天是一周的第一天)

     * @return

     */

    public static String getWeek(String sdate, String num) {

        // 再转换为时间

        Date dd = strToDate(sdate);

        Calendar c = Calendar.getInstance();

        c.setTime(dd);

        if (num.equals("1")) // 返回星期一所在的日期

            c.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);

        else if (num.equals("2")) // 返回星期二所在的日期

            c.set(Calendar.DAY_OF_WEEK, Calendar.TUESDAY);

        else if (num.equals("3")) // 返回星期三所在的日期

            c.set(Calendar.DAY_OF_WEEK, Calendar.WEDNESDAY);

        else if (num.equals("4")) // 返回星期四所在的日期

            c.set(Calendar.DAY_OF_WEEK, Calendar.THURSDAY);

        else if (num.equals("5")) // 返回星期五所在的日期

            c.set(Calendar.DAY_OF_WEEK, Calendar.FRIDAY);

        else if (num.equals("6")) // 返回星期六所在的日期

            c.set(Calendar.DAY_OF_WEEK, Calendar.SATURDAY);

        else if (num.equals("0")) // 返回星期日所在的日期

            c.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);

        return new SimpleDateFormat("yyyy-MM-dd").format(c.getTime());

    }





    /**

     * 根据一个日期,返回是星期几的字符串

     * @param sdate

     * @return

     */

    public static String getWeek(String sdate) {

        // 再转换为时间

        Date date = strToDate(sdate);

        Calendar c = Calendar.getInstance();

        c.setTime(date);

        // int hour=c.get(Calendar.DAY_OF_WEEK);

        // hour中存的就是星期几了,其范围 1~7

        // 1=星期日 7=星期六,其他类推

        return new SimpleDateFormat("EEEE").format(c.getTime());

    }





    /**

     * 根据一个日期,返回是星期几的字符串

     * @param sdate

     * @return

     */

    public static String getWeekStr(String sdate){

        String str = "";

        str = getWeek(sdate);

        if("1".equals(str)){

            str = "星期日";

        }else if("2".equals(str)){

            str = "星期一";

        }else if("3".equals(str)){

            str = "星期二";

        }else if("4".equals(str)){

            str = "星期三";

        }else if("5".equals(str)){

            str = "星期四";

        }else if("6".equals(str)){

            str = "星期五";

        }else if("7".equals(str)){

            str = "星期六";

        }

        return str;

    }





    /**

     * 两个时间之间的天数

     * @param date1

     * @param date2

     * @return

     */

    public static long getDays(String date1, String date2) {

        if (date1 == null || date1.equals(""))

            return 0;

        if (date2 == null || date2.equals(""))

            return 0;

        // 转换为标准时间

        SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd");

        java.util.Date date = null;

        java.util.Date mydate = null;

        try {

            date = myFormatter.parse(date1);

            mydate = myFormatter.parse(date2);

        } catch (Exception e) {

        }

        long day = (date.getTime() - mydate.getTime()) / (24 * 60 * 60 * 1000);

        return day;

    }





    /**

     * 形成如下的日历 , 根据传入的一个时间返回一个结构 星期日 星期一 星期二 星期三 星期四 星期五 星期六 下面是当月的各个时间

     * 此函数返回该日历第一行星期日所在的日期

     * @param sdate

     * @return

     */

    public static String getNowMonth(String sdate) {

        // 取该时间所在月的一号

        sdate = sdate.substring(0, 8) + "01";



        // 得到这个月的1号是星期几

        Date date = strToDate(sdate);

        Calendar c = Calendar.getInstance();

        c.setTime(date);

        int u = c.get(Calendar.DAY_OF_WEEK);

        String newday = getNextDay(sdate, (1 - u) + "");

        return newday;

    }





    /**

     * 根据用户传入的时间表示格式,返回当前时间的格式 如果是yyyyMMdd,注意字母y不能大写

     * @param sformat

     * @return

     */

    public static String getUserDate(String sformat) {

        Date currentTime = new Date();

        SimpleDateFormat formatter = new SimpleDateFormat(sformat);

        String dateString = formatter.format(currentTime);

        return dateString;

    }





    /**

     * 返回一个i位数的随机数

     * @param i

     * @return

     */

    public static String getRandom(int i) {

        Random jjj = new Random();

        // int suiJiShu = jjj.nextInt(9);

        if (i == 0)

            return "";

        String jj = "";

        for (int k = 0; k < i; k++) {

            jj = jj + jjj.nextInt(9);

        }

        return jj;

    }





    /**

     * 取得数据库主键 生成格式为yyyymmddhhmmss+k位随机数

     * @param k:表示是取几位随机数,可以自己定

     * @return

     */

    public static String getNo(int k) {

        return getUserDate("yyyyMMddhhmmss") + getRandom(k);

    }





    public static void main(String[] args) {

        System.out.println(getNo(8));

    }

}

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