日期格式化工具类

来源：互联网发布：人工智能 0到1 编辑：程序博客网时间：2024/05/07 12:10
/日期格式化工具类***/
public class DateUtil {    private static String pattern = "今天是yyyy-MM-dd E HH:mm:ss";    private static SimpleDateFormat patternDF = new SimpleDateFormat(pattern, Locale.CHINA);    private static final SimpleDateFormat MMdd = new SimpleDateFormat("MM/dd");    public static final SimpleDateFormat yyyyMMdd = new SimpleDateFormat("yyyy-MM-dd");    private static final SimpleDateFormat yyyyMMddNoSep = new SimpleDateFormat("yyyyMMdd");    private static final SimpleDateFormat HHmmss = new SimpleDateFormat("HH:mm:ss");    private static final SimpleDateFormat yyyyMMddHHmmss = new SimpleDateFormat(            "yyyy-MM-dd HH:mm:ss");    private static final SimpleDateFormat yyyyMMddHHmmss2 = new SimpleDateFormat(    "yyyy-MM-dd HH:mm");    private static final SimpleDateFormat yyyyMMddHHmmssNoSep = new SimpleDateFormat(            "yyyyMMddHHmmss");    private static final SimpleDateFormat yyyyMMddHHmmssSSS=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss:SSS");    private static final SimpleDateFormat yyyyMM = new SimpleDateFormat("yyyy-MM");    private static final SimpleDateFormat yyyyMMNoSep = new SimpleDateFormat("yyyyMM");    private static final SimpleDateFormat MS=new SimpleDateFormat("HH:mm:ss.S");    public static String makeCurrentDateTimeStr() {        return patternDF.format(getCurrentDate());    }    public static String formatDate(Date d) {        if (d == null)            return "";        return yyyyMMdd.format(d);    }    public static Date formatStrDate(String d) {        if (d == null)            return getCurrentDate();        Date date = null;        try {            date = yyyyMMdd.parse(d);        } catch (ParseException e) {            e.printStackTrace();            return getCurrentDate();        }        return date;    }    public static Date formatYMD(String d){         if (d == null)             return getCurrentDate();         Date date = null;         try {             date = yyyyMMddNoSep.parse(d);         } catch (ParseException e) {             e.printStackTrace();             return getCurrentDate();         }         return date;    }    public static Date formatStrDateTime(String d) {        if (StringUtil.isEmpty(d))            return getCurrentDate();        Date date = null;        try {            date = yyyyMMddHHmmss.parse(d);        } catch (ParseException e) {            e.printStackTrace();            return getCurrentDate();        }        return date;    }    public static Date formatStrDateTime2(String d) {        if ( StringUtil.isEmpty(d))            return getCurrentDate();        Date date = null;        try {            date = yyyyMMddHHmmss2.parse(d);        } catch (ParseException e) {            e.printStackTrace();            return getCurrentDate();        }        return date;    }    public static String formatDate(String strDate) {        if (strDate == null || strDate.trim().equals(""))            return StringUtil.EMPTY;        try {            return yyyyMMdd.format(yyyyMMdd.parse(strDate));        } catch (ParseException e) {            e.printStackTrace();            return StringUtil.EMPTY;        }    }    public static String formatTime(Date d) {        if (d == null)            return StringUtil.EMPTY;        return HHmmss.format(d);    }    public static String formatDateTimeStr(String strTime) {        Date date=null;        if (strTime == null || strTime.length() <= 0) {            return "";        }        try {            date = yyyyMMddHHmmss.parse(strTime);            return yyyyMMddHHmmss.format(date);        } catch (ParseException e) {            e.printStackTrace();        }        return "";    }    public static String formatDateTime(Date d) {        if (d == null)            return StringUtil.EMPTY;        return yyyyMMddHHmmss.format(d);    }    public static String formatDateTimeMS(Date d){        if (d == null)            return StringUtil.EMPTY;        return yyyyMMddHHmmssSSS.format(d);    }    public static Date formatDateTime(String strTime){        Date date=null;        if(StringUtil.isEmpty(strTime))            return date;        try {            date = yyyyMMddHHmmss.parse(strTime);        } catch (ParseException e) {            e.printStackTrace();        }        return date;    }    public static String formatDateTime2(Date d) {        if (d == null)            return StringUtil.EMPTY;        return yyyyMMddHHmmss2.format(d);    }    public static String formatDateTimeNoSep(Date d) {        if (d == null)            return StringUtil.EMPTY;        return yyyyMMddHHmmssNoSep.format(d);    }    public static String formatyyMM(Date d) {        if (d == null) {            return StringUtil.EMPTY;        }        return yyyyMM.format(d);    }    /**     * yyyyMMddHHmmss--->yyyyMMdd     *      * @param text     * @return     */    public static String renderDate(String text) {        if (StringUtil.isEmpty(text)) {            return StringUtil.EMPTY;        }        int idx = text.indexOf(" ");        if (idx <= 0) {            return text;        }        return text.substring(0, idx).trim();    }    /**     * yyyyMMddHHmmss--->yyyyMMdd     *      * @param text     * @return     */    public static String renderTime(String text) {        if (StringUtil.isEmpty(text)) {            return StringUtil.EMPTY;        }        int idx = text.indexOf(" ");        if (idx <= 0) {            return text;        }        return text.substring(idx).trim();    }    public static String formatNextMonthDate(String date) {        String strDate = "";        Date d = formatStrDate(date);        Date currentDate = d;        if (currentDate == null) {            Date nextMonth = new Date(getCurrentDate().getTime() + (24 * 60 * 60 * 1000));            strDate = formatDate(nextMonth);        } else {            Date nextMonth = new Date(currentDate.getTime() + (24 * 60 * 60 * 1000));            strDate = formatDate(nextMonth);        }        return strDate;    }    public static String formatPrevMonthDate(Date date) {        Calendar cal = Calendar.getInstance();        if (date != null) {            cal.setTimeInMillis(date.getTime());        }        cal.set(Calendar.MONTH, cal.get(Calendar.MONTH) - 1);        String strTime = formatDate(new Date(cal.getTimeInMillis()));        return strTime.replace("-", "").substring(0, 6);    }    public static String formatTime(int seconds) {        String ret = "00:00:00";        if (seconds <= 0)            return ret;        int sec = seconds % 60;        int min = (seconds / 60) % 60;        int hr = seconds / 3600;        Calendar cal = Calendar.getInstance();        cal.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH),                hr, min, sec);        ret = String.format("%1$tH:%1$tM:%1$tS", new Date(cal.getTimeInMillis()));        return ret;    }    public static String formatYearMonth(Date date) {        String str = "";        if (date == null) {            str = yyyyMMNoSep.format(getCurrentDate());        } else {            str = yyyyMMNoSep.format(date);        }        return str;    }    public static String formatYearMonth() {        return formatYearMonth(null);    }    public static String formatYMD(Date date) {        String str = "";        if (date == null) {            str = yyyyMMddNoSep.format(getCurrentDate());        } else {            str = yyyyMMddNoSep.format(date);        }        str = str.replaceAll("-", "");        return str;    }    public static Date getCurrentDate() {        return new Date(System.currentTimeMillis());    }    public static long getCurrentTimeMills() {        return System.currentTimeMillis();    }    public static String formatMMDD(String date) {        try {            Date d = formatStrDate(date);            return MMdd.format(new Date(d.getTime()));        } catch (Exception e) {            return MMdd.format(new Date());        }    }    public static String[] getOneWeekDateLable() {        Calendar cal = Calendar.getInstance();        cal.add(Calendar.DAY_OF_MONTH, -7);        String[] dateArr = new String[7];        for (int i = 0; i < 7; i++) {            dateArr[i] = DateUtil.formatDate(cal.getTime());            cal.add(Calendar.DAY_OF_MONTH, 1);        }        return dateArr;    }    public static String[] getFormatOneWeekDateLable(String[] dates) {        String[] dateArr = new String[dates.length];        for (int i = 0; i < 7; i++) {            dateArr[i] = DateUtil.formatMMDD(dates[i]);        }        return dateArr;    }    /**     *      * Return a date string formatted by YYYY-MM-DD.     *      * @param spanType     *            The type you want to span, such as Calendar.MONTH     * @param span     *            The count you want to span     * @return     */    public static String getDateStr(int spanType, int span) {        Calendar cal = Calendar.getInstance();        cal.add(spanType, span);        return formatDate(new Date(cal.getTimeInMillis()));    }    /**     *      * Judge if the given string is a valid date format     *      * @param s     * @return     */    public static boolean isValidDate(String s) {        try {            if (s.length() > 19) {                return false;            } else {                yyyyMMddHHmmss.parse(s);                return true;            }        } catch (Exception e) {            // 如果throw java.text.ParseException或者NullPointerException，就说明格式不对            return false;        }    }    /**     *      * Format the given string to date, if the time part is not "00:00:00",     * return the date part.     *      * @param str     * @return     */    public static String getDate(String str) {        String s;        try {            java.util.Date d = yyyyMMddHHmmss.parse(str);            s = formatDateTime(d);            if (s.indexOf("00:00:00") != -1) {                return s.substring(0, s.indexOf("00:00:00")).trim();            } else {                return s;            }        } catch (Exception e) {            e.printStackTrace();            return null;        }    }    public static String formatMS(Date date){          if (date == null)              return StringUtil.EMPTY;          return MS.format(date);    }    public static String saveDate(String createDate){        String dateCatalogue=DateUtil.formatDate((DateUtil.formatStrDateTime(createDate.replace("/", "-")))).replace("-", "_");        return dateCatalogue;    }    public static String getFileDateTime(String dateTime){        char[] strArray=dateTime.toCharArray();        StringBuffer sb=new StringBuffer();        for(int i=0;i<strArray.length;i++){            sb.append(strArray[i]);            if(i==3)                sb.append("-");            else if(i==5)                sb.append("-");            else if(i==7){                sb.append(" ");            }            else if(i==9){                sb.append(":");            }else if(i==11)                sb.append(":");        }        return sb.toString();    }    public static Date readDate(String catalogue) {        Date date = formatStrDateTime(catalogue.replace("_", "-")                + " 10:00:00");        return date;    }    /**     * 将时间转换为文件名称     * @param dateTime     * @return     */    public static String convertTimeToFileName(String dateTime, String suffix){        return dateTime.replace("-", "").replace(":", "").replace(" ", "") + suffix;    }    public static String formatDate(SimpleDateFormat format, Date date){        if (date == null)            return format.format(new Date());        return format.format(date);    }}
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