DataUtilitls.java

public class DateUtil {    private static final long DAYTIME_MILLISECONDS = 86400000L;    public static final String SDF_YYYY_MM_DD_HH_MM = "yyyy-MM-dd HH:mm";    public static final String SDF_YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";    public static final String SDF_YYYY_MM_DD = "yyyy-MM-dd";    public static final String SDF_HH_MM = "HH:mm";    public static final String SDF_YYYY = "yyyy";    public static final String SDF_YYYY_DOT_M_DOT_D = "yyyy.M.d";    public static final String SDF_YYYY_DOT_MM = "yyyy.MM";        public static final String SDF_YYYY_MM_DD_AT_HH_MM_SS = "yyyy-MM-dd@HH:mm:ss";    /**     * 字符串转换成日期     * @param date 字符串     */    public static Date string2Date(String date, String pattern) throws ParseException {        SimpleDateFormat sdf = new SimpleDateFormat(pattern);        Date d = sdf.parse(date);        return d;    }    /**     * 字符串转换成日期     * @param date 以yyyy-MM-dd HH:mm:ss的pattern进行转换     */    public static Date string2Date(String date) throws ParseException {        SimpleDateFormat sdf = new SimpleDateFormat(SDF_YYYY_MM_DD_HH_MM_SS);        return sdf.parse(date);    }    /**     * 将日期转换为字符串     * @param date     * @param pattern 转化的格式，如yyyy-MM-dd HH:mm:ss     * @return     */    public static String date2String(Date date, String pattern) {        SimpleDateFormat sdf = new SimpleDateFormat(pattern);        String s = sdf.format(date);        return s;    }    /**     * 将日期转换为字符串     * @param date 默认转化为yyyy-MM-dd HH:mm:ss     * @return     */    public static String date2String(Date date) {        SimpleDateFormat sdf = new SimpleDateFormat(SDF_YYYY_MM_DD_HH_MM_SS);        return sdf.format(date);    }    /**     * 将传入的日期向前（或向后）滚动|amount|年     * @param date     * @param amount     * @return     */    public static Date rollByYear(Date date, int amount) {        Calendar calendar = Calendar.getInstance();        calendar.setTime(date);        calendar.add(Calendar.YEAR, amount);        return calendar.getTime();    }    public static Date rollByYear(int amount) {        Calendar calendar = Calendar.getInstance();        calendar.add(Calendar.YEAR, amount);        return calendar.getTime();    }    /**     * 将传入的日期向前（或向后）滚动|amount|月     * @param date     * @param amount     * @return     */    public static Date rollByMonth(Date date, int amount) {        Calendar calendar = Calendar.getInstance();        calendar.setTime(date);        calendar.add(Calendar.MONTH, amount);        return calendar.getTime();    }        /**     * 将传入的日期向前（或向后）滚动|amount|月     * @param date     * @param amount     * @return     */    public static long rollByMonths(Date date, int amount) {        Calendar calendar = Calendar.getInstance();        calendar.setTime(date);        calendar.add(Calendar.MONTH, amount);        return calendar.getTimeInMillis();    }    /**     * 将传入的日期向前（或向后）滚动|amount|天     *      * @param date     * @param amount     * @return     */    public static long rollByDay(Date date, int amount) {        Calendar calendar = Calendar.getInstance();        calendar.setTime(date);        calendar.add(Calendar.DAY_OF_YEAR, amount);        return calendar.getTimeInMillis();    }    /**     * 得到几天前/后的时间     */    public static Date rollByDays(Date date, int amount) {        Calendar calendar = Calendar.getInstance();        calendar.setTime(date);        calendar.add(Calendar.DAY_OF_YEAR, amount);        return calendar.getTime();    }    public static Date rollByMinutes(Date date, int amount) {        Calendar calendar = Calendar.getInstance();        calendar.setTime(date);        calendar.add(Calendar.MINUTE, amount);        return calendar.getTime();    }        /** * 获取 amount 分钟的前后时间 *  */public static Date rollBySeconds(Date date, int amount) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.add(Calendar.SECOND, amount);return calendar.getTime();}    /**     * 得到几小时前/后的时间     * @param date     */    public static Date rollByHour(Date date, int amount) {        Calendar calendar = Calendar.getInstance();        calendar.setTime(date);        calendar.add(Calendar.HOUR_OF_DAY, amount);        return calendar.getTime();    }    /**     * 得到当下date     */    public static Date getNowDate() {        return new Date();    }        /** * 获取当天零点时间 */public static Date getCurrentZeroTime() {Calendar c = Calendar.getInstance();c.setTime(new Date());c.set(Calendar.HOUR_OF_DAY, 0);c.set(Calendar.MINUTE, 0);c.set(Calendar.SECOND, 0);c.set(Calendar.MILLISECOND, 0);return c.getTime();}    /**     * 得到日期字符串     * @param date     */    public static String getDateFromTime(Date date) {        SimpleDateFormat sdf_date = new SimpleDateFormat(SDF_YYYY_MM_DD);        return sdf_date.format(date);    }    /**     * 格式化日期      * 当天的时间 ： HH:mm发布     * 3天内的时间 ： n天前发布     * 大于三天 ： yyyy-MM-dd     * @param date 日期对象     * @param format 三天后的日期格式， 为null 默认yyyy-MM-dd     */    public static String formatTime(Date date, String format) throws ParseException {        if (date == null)            return "";        format = StringUtils.isBlank(format) ? "yyyy-MM-dd" : format;        int result = differDate(date, new Date());        result = result - 1;        if (result < 1) {            return getDate(date, "HH:mm发布");        }        if (result >= 1 && result < 2)            return getDate(date, "1天前发布");        else if (result >= 2 && result < 3)            return getDate(date, "2天前发布");        else if (result >= 3 && result < 4)            return getDate(date, "3天前发布");        else            return getDate(date, "yyyy-MM-dd");    }    //格式化时间 列表页显示    public static String formatTime(String stime, String format) throws ParseException {        if (stime == null)            return "";        Date ctime = string2Date(stime);        return formatTime(ctime, format);    }        /**     * 计算两个日期的相差天数     * 注：只计算日期的差值，不精确到小时；结果可以有负值     * @param fromDate     * @param endDate     * @return     * @throws ParseException     */    public static int differDate(Date fromDate, Date endDate) throws ParseException {        return differDate(date2String(fromDate, SDF_YYYY_MM_DD),            date2String(endDate, SDF_YYYY_MM_DD));    }    /**     * 计算两个日期的相差天数 （2014-10-01 到 2014-10-07  为 7天）     * 注：只计算日期的差值，不精确到小时；结果可以有负值     * @param fromDate 形如yyyy-MM-dd     * @param endDate 形如yyyy-MM-dd     * @return     * @throws ParseException     */    public static int differDate(String fromDate, String endDate) throws ParseException {        Date fDate = string2Date(fromDate, SDF_YYYY_MM_DD);        Date eDate = string2Date(endDate, SDF_YYYY_MM_DD);        int cha = calculateDiffDay(fDate, eDate);        return cha >= 0 ? (cha + 1) : (cha - 1);    }        private static int calculateDiffDay(Date fDate, Date eDate){        long cha = eDate.getTime() - fDate.getTime();        return (int) (cha / DAYTIME_MILLISECONDS);    /*Calendar aCalendar = Calendar.getInstance();aCalendar.setTime(fDate);int day1 = aCalendar.get(Calendar.DAY_OF_YEAR);aCalendar.setTime(eDate);int day2 = aCalendar.get(Calendar.DAY_OF_YEAR);int day = day2 - day1;return day < 0 ? 0 - day : day + 1;*/    }            public static boolean compete(String startDate, String endDate, String formatStr) {        if (StringUtils.isBlank(startDate) || StringUtils.isBlank(endDate)            || StringUtils.isBlank(formatStr)) {            return false;        }        SimpleDateFormat format = new SimpleDateFormat(formatStr);        try {            Date sDate = format.parse(startDate);            if (endDate.indexOf("至今") > -1) {                Calendar calendar = Calendar.getInstance();                if (formatStr.equals("yyyy")) {                    endDate = calendar.get(Calendar.YEAR) + "";                } else if (formatStr.equals("yyyy.MM")) {                    endDate = calendar.get(Calendar.YEAR) + "."                              + (calendar.get(Calendar.MONTH) + 1);                }            }            Date eDate = format.parse(endDate);            if (eDate.getTime() >= sDate.getTime()) {                return true;            }        } catch (ParseException e) {            return false;        }        return false;    }    public static String getDate(Date date, String formatStr) {        SimpleDateFormat format = new SimpleDateFormat(formatStr);        return date != null ? format.format(date) : "";    }    /**    * 将日期格式的字符串转换为长整型    *     * @param date    * @param format    * @return    */    public static long convert2long(String date, String format) {        try {            if (date != null || !"".equals(date)) {                if (format == null || "".equals(format))                    format = "yyyy-MM-dd HH:mm:ss";                SimpleDateFormat sf = new SimpleDateFormat(format);                return sf.parse(date).getTime();            }        } catch (ParseException e) {            e.printStackTrace();        }        return 0l;    }    /**     * BBS的发布时间     */    public static String formatBBSTime(Date fDate) throws ParseException {        Date oDate = new Date();        long m = oDate.getTime() - fDate.getTime();        long sec = m / 1000;//秒        long min = m / 1000 / 60;//分        long hour = m / 1000 / 60 / 60;//小时        long day = m / 1000 / 60 / 60 / 24;//天        long month = m / 1000 / 60 / 60 / 24 / 30;//月        long year = m / 1000 / 60 / 60 / 24 / 30 / 12;//年        if (year != 0L)            return year + "年前";        if (month != 0L)            return month + "月前";        if (day != 0L)            return day + "天前";        if (hour != 0L)            return hour + "小时前";        if (min != 0L)            return min + "分钟前";        if (sec != 0L)            return sec + "秒前";        return "刚刚更新";        //return getDate(fDate, "yyyy-MM-dd");    }    /**     * 时间计算      * @param year     * @param month     * @param day     * @param hour     * @param min     * @param sec     * @return      */    public static Date calcDate(int year, int month, int day, int hour, int min, int sec) {        Calendar cal = Calendar.getInstance();        year = cal.get(Calendar.YEAR) + year;        month = cal.get(Calendar.MONTH) + month;        day = cal.get(Calendar.DATE) + day;        hour = cal.get(Calendar.HOUR_OF_DAY) + hour;        min = cal.get(Calendar.MINUTE) + min;        sec = cal.get(Calendar.SECOND) + sec;        cal.set(year, month, day, hour, min, sec);        Date date = cal.getTime();        return date;    }    /**     * 时间计算      * @param year     * @param month     * @param day     * @param hour     * @param min     * @param sec     * @return      */    public static String calcDate(int year, int month, int day, int hour, int min, int sec,                                  String format) {        Calendar cal = Calendar.getInstance();        year = cal.get(Calendar.YEAR) + year;        month = cal.get(Calendar.MONTH) + month;        day = cal.get(Calendar.DATE) + day;        hour = cal.get(Calendar.HOUR_OF_DAY) + hour;        min = cal.get(Calendar.MINUTE) + min;        sec = cal.get(Calendar.SECOND) + sec;        cal.set(year, month, day, hour, min, sec);        Date date = cal.getTime();        String date2String = date2String(date, format);        return date2String;    }    /**     * 计算相差天数     * @throws     */    public static int calcDate(String endDate, String startDate, String format) {        SimpleDateFormat formatter = new SimpleDateFormat(format);        try {            long t = formatter.parse(endDate).getTime() - formatter.parse(startDate).getTime();            return new Long((t / (1000 * 24 * 60 * 60))).intValue();        } catch (ParseException e) {            return 0;        }    }    /**    * @Title: calcDate    * @param dateStr计算dateStr与days之和    * @date 2013-11-9    * @throws     */    public static String calcDate(String dateStr, int days, String format) {        SimpleDateFormat formatter = new SimpleDateFormat(format);        try {            long time = formatter.parse(dateStr).getTime();            long t = time + days * 1000 * 24 * 60 * 60;            Date d = new Date(t);            return formatter.format(d);        } catch (ParseException e) {            e.printStackTrace();            return dateStr;        }    }    /**     * 计算与当前时间相差天数    * @Title: calcDays    * @throws     */    public static int calcDays(String date, String format) {        if (date == null) {            return 5;        }        SimpleDateFormat formatter = new SimpleDateFormat(format);        //开始结束相差天数        try {            return new Long((System.currentTimeMillis() - formatter.parse(date).getTime())                            / (1000 * 24 * 60 * 60)).intValue();        } catch (ParseException e) {            e.printStackTrace();            return 5;        }    }    /**     * 格式化页面时间显示     * @param deliverTime     * @param fmtStr     * @return     */    public static String formatShowTime(String deliverTime, String fmtStr) {        SimpleDateFormat sFmt = new SimpleDateFormat(SDF_YYYY_MM_DD_HH_MM_SS);        Date date = null;try {date = sFmt.parse(deliverTime);} catch (ParseException e) {e.printStackTrace();}        return formatShowTime(date, fmtStr);                }    /**    * 格式化页面时间显示    * @param deliverTime    * @param fmtStr    * @return    */    public static String formatShowTime(Date deliverTime, String fmtStr) {        try {            SimpleDateFormat fmt = new SimpleDateFormat(fmtStr);            return fmt.format(deliverTime);        } catch (Exception e) {            return StringUtils.EMPTY;        }    }    /**     * 时间计算      * @param year     * @param month     * @param day     * @param hour     * @param min     * @param sec     * @return      */    public static String calcDate(Date date, int year, int month, int day, int hour, int min,                                  int sec, String format) {        Calendar cal = Calendar.getInstance();        cal.setTime(date);        year = cal.get(Calendar.YEAR) + year;        month = cal.get(Calendar.MONTH) + month;        day = cal.get(Calendar.DATE) + day;        hour = cal.get(Calendar.HOUR_OF_DAY) + hour;        min = cal.get(Calendar.MINUTE) + min;        sec = cal.get(Calendar.SECOND) + sec;        cal.set(year, month, day, hour, min, sec);        Date resultDate = cal.getTime();        String date2String = date2String(resultDate, format);        return date2String;    }    /**     * 得到今夕是何年      * @return 形如 yyyy     */    public static String getYear() {        return date2String(new Date(), SDF_YYYY);    }    /**     * 得到今夕是何年      * @return 形如 yyyy     */    public static int getYear(Date date) {        return Integer.parseInt(date2String(date, SDF_YYYY));    }    /**     * 计算当前年份,并和传入值比较     * */    public static int calCurrentYear(String year,String format){    SimpleDateFormat fmt = new SimpleDateFormat(format);    Date now = new Date();    String currentYear = fmt.format(now);    return year.compareTo(currentYear);    }    }