java 日期处理工具类 DateUtil 2

package com.util;import java.text.ParseException;import java.text.ParsePosition;import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.Date;import java.util.GregorianCalendar;import org.apache.commons.lang.StringUtils;import org.apache.log4j.Logger;/** * 日期处理工具类 * @author dylan_xu * @date Mar 11, 2012 * @modified by * @modified date * @since JDK1.6 * @see com.util.DateUtil */public class DateUtil {// ~ Static fields/initializers// =============================================private static Logger logger = Logger.getLogger(DateUtil.class);private static String defaultDatePattern = null;private static String timePattern = "HH:mm";private static Calendar cale = Calendar.getInstance();public static final String TS_FORMAT = DateUtil.getDatePattern() + " HH:mm:ss.S";/** 日期格式yyyy-MM字符串常量 */private static final String MONTH_FORMAT = "yyyy-MM";/** 日期格式yyyy-MM-dd字符串常量 */private static final String DATE_FORMAT = "yyyy-MM-dd";/** 日期格式HH:mm:ss字符串常量 */private static final String HOUR_FORMAT = "HH:mm:ss";/** 日期格式yyyy-MM-dd HH:mm:ss字符串常量 */private static final String DATETIME_FORMAT = "yyyy-MM-dd HH:mm:ss";/** 某天开始时分秒字符串常量  00:00:00 */private static final String DAY_BEGIN_STRING_HHMMSS = " 00:00:00";/**  某天结束时分秒字符串常量  23:59:59  */public static final String DAY_END_STRING_HHMMSS = " 23:59:59";private static SimpleDateFormat sdf_date_format = new SimpleDateFormat(DATE_FORMAT);private static SimpleDateFormat sdf_hour_format = new SimpleDateFormat(HOUR_FORMAT);private static SimpleDateFormat sdf_datetime_format = new SimpleDateFormat(DATETIME_FORMAT);// ~ Methods// ================================================================public DateUtil() {}/** * 获得服务器当前日期及时间，以格式为：yyyy-MM-dd HH:mm:ss的日期字符串形式返回 * @author dylan_xu * @date Mar 11, 2012 * @return */public static String getDateTime() {try {return sdf_datetime_format.format(cale.getTime());} catch (Exception e) {logger.debug("DateUtil.getDateTime():" + e.getMessage());return "";}}/** * 获得服务器当前日期，以格式为：yyyy-MM-dd的日期字符串形式返回 * @author dylan_xu * @date Mar 11, 2012 * @return */public static String getDate() {try {return sdf_date_format.format(cale.getTime());} catch (Exception e) {logger.debug("DateUtil.getDate():" + e.getMessage());return "";}}/** * 获得服务器当前时间，以格式为：HH:mm:ss的日期字符串形式返回 * @author dylan_xu * @date Mar 11, 2012 * @return */public static String getTime() {String temp = " ";try {temp += sdf_hour_format.format(cale.getTime());return temp;} catch (Exception e) {logger.debug("DateUtil.getTime():" + e.getMessage());return "";}}/** * 统计时开始日期的默认值 * @author dylan_xu * @date Mar 11, 2012 * @return */public static String getStartDate() {try {return getYear() + "-01-01";} catch (Exception e) {logger.debug("DateUtil.getStartDate():" + e.getMessage());return "";}}/** * 统计时结束日期的默认值 * @author dylan_xu * @date Mar 11, 2012 * @return */public static String getEndDate() {try {return getDate();} catch (Exception e) {logger.debug("DateUtil.getEndDate():" + e.getMessage());return "";}}/** * 获得服务器当前日期的年份 * @author dylan_xu * @date Mar 11, 2012 * @return */public static String getYear() {try {return String.valueOf(cale.get(Calendar.YEAR));} catch (Exception e) {logger.debug("DateUtil.getYear():" + e.getMessage());return "";}}/** * 获得服务器当前日期的月份 * @author dylan_xu * @date Mar 11, 2012 * @return */public static String getMonth() {try {java.text.DecimalFormat df = new java.text.DecimalFormat();df.applyPattern("00;00");return df.format((cale.get(Calendar.MONTH) + 1));} catch (Exception e) {logger.debug("DateUtil.getMonth():" + e.getMessage());return "";}}/** * 获得服务器在当前月中天数 * @author dylan_xu * @date Mar 11, 2012 * @return */public static String getDay() {try {return String.valueOf(cale.get(Calendar.DAY_OF_MONTH));} catch (Exception e) {logger.debug("DateUtil.getDay():" + e.getMessage());return "";}}/** * 比较两个日期相差的天数 * @author dylan_xu * @date Mar 11, 2012 * @param date1 * @param date2 * @return */public static int getMargin(String date1, String date2) {int margin;try {ParsePosition pos = new ParsePosition(0);ParsePosition pos1 = new ParsePosition(0);Date dt1 = sdf_date_format.parse(date1, pos);Date dt2 = sdf_date_format.parse(date2, pos1);long l = dt1.getTime() - dt2.getTime();margin = (int) (l / (24 * 60 * 60 * 1000));return margin;} catch (Exception e) {logger.debug("DateUtil.getMargin():" + e.toString());return 0;}}/** * 比较两个日期相差的天数 * @author dylan_xu * @date Mar 11, 2012 * @param date1 * @param date2 * @return */public static double getDoubleMargin(String date1, String date2) {double margin;try {ParsePosition pos = new ParsePosition(0);ParsePosition pos1 = new ParsePosition(0);Date dt1 = sdf_datetime_format.parse(date1, pos);Date dt2 = sdf_datetime_format.parse(date2, pos1);long l = dt1.getTime() - dt2.getTime();margin = (l / (24 * 60 * 60 * 1000.00));return margin;} catch (Exception e) {logger.debug("DateUtil.getMargin():" + e.toString());return 0;}}/** * 比较两个日期相差的月数 * @author dylan_xu * @date Mar 11, 2012 * @param date1 * @param date2 * @return */public static int getMonthMargin(String date1, String date2) {int margin;try {margin = (Integer.parseInt(date2.substring(0, 4)) - Integer.parseInt(date1.substring(0, 4))) * 12;margin += (Integer.parseInt(date2.substring(4, 7).replaceAll("-0","-")) - Integer.parseInt(date1.substring(4, 7).replaceAll("-0", "-")));return margin;} catch (Exception e) {logger.debug("DateUtil.getMargin():" + e.toString());return 0;}}/** * 返回日期加X天后的日期 * @author dylan_xu * @date Mar 11, 2012 * @param date * @param i * @return */public static String addDay(String date, int i) {try {GregorianCalendar gCal = new GregorianCalendar(Integer.parseInt(date.substring(0, 4)), Integer.parseInt(date.substring(5, 7)) - 1, Integer.parseInt(date.substring(8, 10)));gCal.add(GregorianCalendar.DATE, i);return sdf_date_format.format(gCal.getTime());} catch (Exception e) {logger.debug("DateUtil.addDay():" + e.toString());return getDate();}}/** * 返回日期加X月后的日期 * @author dylan_xu * @date Mar 11, 2012 * @param date * @param i * @return */public static String addMonth(String date, int i) {try {GregorianCalendar gCal = new GregorianCalendar(Integer.parseInt(date.substring(0, 4)), Integer.parseInt(date.substring(5, 7)) - 1, Integer.parseInt(date.substring(8, 10)));gCal.add(GregorianCalendar.MONTH, i);return sdf_date_format.format(gCal.getTime());} catch (Exception e) {logger.debug("DateUtil.addMonth():" + e.toString());return getDate();}}/** * 返回日期加X年后的日期 * @author dylan_xu * @date Mar 11, 2012 * @param date * @param i * @return */public static String addYear(String date, int i) {try {GregorianCalendar gCal = new GregorianCalendar(Integer.parseInt(date.substring(0, 4)), Integer.parseInt(date.substring(5, 7)) - 1, Integer.parseInt(date.substring(8, 10)));gCal.add(GregorianCalendar.YEAR, i);return sdf_date_format.format(gCal.getTime());} catch (Exception e) {logger.debug("DateUtil.addYear():" + e.toString());return "";}}/** * 返回某年某月中的最大天 * @author dylan_xu * @date Mar 11, 2012 * @param year * @param month * @return */public static int getMaxDay(int iyear, int imonth) {int day = 0;try {if (imonth == 1 || imonth == 3 || imonth == 5 || imonth == 7|| imonth == 8 || imonth == 10 || imonth == 12) {day = 31;} else if (imonth == 4 || imonth == 6 || imonth == 9 || imonth == 11) {day = 30;} else if ((0 == (iyear % 4)) && (0 != (iyear % 100)) || (0 == (iyear % 400))) {day = 29;} else {day = 28;}return day;} catch (Exception e) {logger.debug("DateUtil.getMonthDay():" + e.toString());return 1;}}/** * 格式化日期 * @author dylan_xu * @date Mar 11, 2012 * @param orgDate * @param Type * @param Span * @return */@SuppressWarnings("static-access")public String rollDate(String orgDate, int Type, int Span) {try {String temp = "";int iyear, imonth, iday;int iPos = 0;char seperater = '-';if (orgDate == null || orgDate.length() < 6) {return "";}iPos = orgDate.indexOf(seperater);if (iPos > 0) {iyear = Integer.parseInt(orgDate.substring(0, iPos));temp = orgDate.substring(iPos + 1);} else {iyear = Integer.parseInt(orgDate.substring(0, 4));temp = orgDate.substring(4);}iPos = temp.indexOf(seperater);if (iPos > 0) {imonth = Integer.parseInt(temp.substring(0, iPos));temp = temp.substring(iPos + 1);} else {imonth = Integer.parseInt(temp.substring(0, 2));temp = temp.substring(2);}imonth--;if (imonth < 0 || imonth > 11) {imonth = 0;}iday = Integer.parseInt(temp);if (iday < 1 || iday > 31)iday = 1;Calendar orgcale = Calendar.getInstance();orgcale.set(iyear, imonth, iday);temp = this.rollDate(orgcale, Type, Span);return temp;} catch (Exception e) {return "";}}public static String rollDate(Calendar cal, int Type, int Span) {try {String temp = "";Calendar rolcale;rolcale = cal;rolcale.add(Type, Span);temp = sdf_date_format.format(rolcale.getTime());return temp;} catch (Exception e) {return "";}}/** * 返回默认的日期格式 * @author dylan_xu * @date Mar 11, 2012 * @return */public static synchronized String getDatePattern() {defaultDatePattern = "yyyy-MM-dd";return defaultDatePattern;}/** * 将指定日期按默认格式进行格式代化成字符串后输出如：yyyy-MM-dd * @author dylan_xu * @date Mar 11, 2012 * @param aDate * @return */public static final String getDate(Date aDate) {SimpleDateFormat df = null;String returnValue = "";if (aDate != null) {df = new SimpleDateFormat(getDatePattern());returnValue = df.format(aDate);}return (returnValue);}/** * 取得给定日期的时间字符串，格式为当前默认时间格式 * @author dylan_xu * @date Mar 11, 2012 * @param theTime * @return */public static String getTimeNow(Date theTime) {return getDateTime(timePattern, theTime);}/** * 取得当前时间的Calendar日历对象 * @author dylan_xu * @date Mar 11, 2012 * @return * @throws ParseException */public Calendar getToday() throws ParseException {Date today = new Date();SimpleDateFormat df = new SimpleDateFormat(getDatePattern());String todayAsString = df.format(today);Calendar cal = new GregorianCalendar();cal.setTime(convertStringToDate(todayAsString));return cal;}/** * 将日期类转换成指定格式的字符串形式 * @author dylan_xu * @date Mar 11, 2012 * @param aMask * @param aDate * @return */public static final String getDateTime(String aMask, Date aDate) {SimpleDateFormat df = null;String returnValue = "";if (aDate == null) {logger.error("aDate is null!");} else {df = new SimpleDateFormat(aMask);returnValue = df.format(aDate);}return (returnValue);}/** * 将指定的日期转换成默认格式的字符串形式 * @author dylan_xu * @date Mar 11, 2012 * @param aDate * @return */public static final String convertDateToString(Date aDate) {return getDateTime(getDatePattern(), aDate);}/** * 将日期字符串按指定格式转换成日期类型 * @author dylan_xu * @date Mar 11, 2012 * @param aMask 指定的日期格式，如:yyyy-MM-dd * @param strDate 待转换的日期字符串 * @return * @throws ParseException */public static final Date convertStringToDate(String aMask, String strDate)throws ParseException {SimpleDateFormat df = null;Date date = null;df = new SimpleDateFormat(aMask);if (logger.isDebugEnabled()) {logger.debug("converting '" + strDate + "' to date with mask '" + aMask + "'");}try {date = df.parse(strDate);} catch (ParseException pe) {logger.error("ParseException: " + pe);throw pe;}return (date);}/** * 将日期字符串按默认格式转换成日期类型 * @author dylan_xu * @date Mar 11, 2012 * @param strDate * @return * @throws ParseException */public static Date convertStringToDate(String strDate)throws ParseException {Date aDate = null;try {if (logger.isDebugEnabled()) {logger.debug("converting date with pattern: " + getDatePattern());}aDate = convertStringToDate(getDatePattern(), strDate);} catch (ParseException pe) {logger.error("Could not convert '" + strDate + "' to a date, throwing exception");throw new ParseException(pe.getMessage(), pe.getErrorOffset());}return aDate;}/** * 返回一个JAVA简单类型的日期字符串 * @author dylan_xu * @date Mar 11, 2012 * @return */public static String getSimpleDateFormat() {SimpleDateFormat formatter = new SimpleDateFormat();String NDateTime = formatter.format(new Date());return NDateTime;}/** * 将指定字符串格式的日期与当前时间比较 * @author DYLAN * @date Feb 17, 2012 * @param strDate 需要比较时间 * @return  * <p> * int code * <ul> * <li>-1 当前时间 < 比较时间 </li> * <li> 0 当前时间 = 比较时间 </li> * <li>>=1当前时间 > 比较时间 </li> * </ul> * </p> */public static int compareToCurTime (String strDate) {if (StringUtils.isBlank(strDate)) {return -1;}Date curTime = cale.getTime();String strCurTime = null;try {strCurTime = sdf_datetime_format.format(curTime);} catch (Exception e) {if (logger.isDebugEnabled()) {logger.debug("[Could not format '" + strDate + "' to a date, throwing exception:" + e.getLocalizedMessage() + "]");}}if (StringUtils.isNotBlank(strCurTime)) {return strCurTime.compareTo(strDate);}return -1;}/** * 为查询日期添加最小时间 *  * @param 目标类型Date * @param 转换参数Date * @return */@SuppressWarnings("deprecation")public static Date addStartTime(Date param) {Date date = param;try {date.setHours(0);date.setMinutes(0);date.setSeconds(0);return date;} catch (Exception ex) {return date;}}/** * 为查询日期添加最大时间 *  * @param 目标类型Date * @param 转换参数Date * @return */@SuppressWarnings("deprecation")public static Date addEndTime(Date param) {Date date = param;try {date.setHours(23);date.setMinutes(59);date.setSeconds(0);return date;} catch (Exception ex) {return date;}}/** * 返回系统现在年份中指定月份的天数 *  * @param 月份month * @return 指定月的总天数 */@SuppressWarnings("deprecation")public static String getMonthLastDay(int month) {Date date = new Date();int[][] day = { { 0, 30, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },{ 0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 } };int year = date.getYear() + 1900;if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) {return day[1][month] + "";} else {return day[0][month] + "";}}/** * 返回指定年份中指定月份的天数 *  * @param 年份year * @param 月份month * @return 指定月的总天数 */public static String getMonthLastDay(int year, int month) {int[][] day = { { 0, 30, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },{ 0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 } };if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) {return day[1][month] + "";} else {return day[0][month] + "";}}/** * 判断是平年还是闰年 * @author dylan_xu * @date Mar 11, 2012 * @param year * @return */public static boolean isLeapyear(int year) {if ((year % 4 == 0 && year % 100 != 0) || (year % 400) == 0) {return true;} else {return false;}}/** * 取得当前时间的日戳 * @author dylan_xu * @date Mar 11, 2012 * @return */@SuppressWarnings("deprecation")public static String getTimestamp() {Date date = cale.getTime();String timestamp = "" + (date.getYear() + 1900) + date.getMonth()+ date.getDate() + date.getMinutes() + date.getSeconds()+ date.getTime();return timestamp;}/** * 取得指定时间的日戳 *  * @return */@SuppressWarnings("deprecation")public static String getTimestamp(Date date) {String timestamp = "" + (date.getYear() + 1900) + date.getMonth()+ date.getDate() + date.getMinutes() + date.getSeconds()+ date.getTime();return timestamp;}public static void main(String[] args) {System.out.println(getYear() + "|" + getMonth() + "|" + getDate());}}