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Java对日期操作处理类
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項目中經常用到對日期相關操作
Dateutil.java代碼 ?
package?com.seg.common.util;?? ?? ?? ?? import?java.text.DateFormat;?? import?java.text.DecimalFormat;?? 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.beanutils.ConversionException;?? import?org.apache.commons.lang.StringUtils;?? import?org.apache.commons.logging.Log;?? import?org.apache.commons.logging.LogFactory;?? ?? ?? /**?? ?*?日期處理工具類?? ?*?@author?Lee?? ?*/?? ?? public?class?DateUtil?{?? ????//~?Static?fields/initializers?=============================================?? ?????? ?????? ????private?static?Log?log?=?LogFactory.getLog(DateUtil.class);?? ????private?static?String?defaultDatePattern?=?null;?? ????private?static?String?timePattern?=?"HH:mm";?? ????public?static?final?String?TS_FORMAT?=?DateUtil.getDatePattern()?+?"?HH:mm:ss.S";?? ????private?static?Calendar?cale?=?Calendar.getInstance();?? ????private?static?SimpleDateFormat?sdf?=?new?SimpleDateFormat("yyyy-MM-dd");?? ????private?static?SimpleDateFormat?sdf1?=?new?SimpleDateFormat("HH:mm:ss");?? ????private?static?SimpleDateFormat?sdf2?=?new?SimpleDateFormat("yyyy-MM-dd?HH:mm:ss");?? ?? ????//~?Methods?================================================================?? ?? ????public?DateUtil(){?? ????}?? ?????? ????/**?? ?????*?獲得服務器當前日期及時間，以格式為：yyyy-MM-dd?HH:mm:ss的日期字符串形式返回?? ?????*/?? ????public?static?String?getDateTime(){?? ????????try{?? ????????????return?sdf2.format(cale.getTime());?? ????????}?catch(Exception?e){?? ????????????log.debug("DateUtil.getDateTime():"?+?e.getMessage());?? ????????????return?"";?? ????????}?? ????}?? ????/**?? ?????*?獲得服務器當前日期，以格式為：yyyy-MM-dd的日期字符串形式返回?? ?????*/?? ????public?static?String?getDate(){?? ????????try{?? ????????????return?sdf.format(cale.getTime());?? ????????}?catch(Exception?e){?? ????????????log.debug("DateUtil.getDate():"?+?e.getMessage());?? ????????????return?"";?? ????????}?? ????}?? ?? ????/**?? ?????*?獲得服務器當前時間，以格式為：HH:mm:ss的日期字符串形式返回?? ?????*/?? ????public?static?String?getTime(){?? ????????String?temp?=?"";?? ????????try{?? ????????????temp?+=?sdf1.format(cale.getTime());?? ????????????return?temp;?? ????????}?catch(Exception?e){?? ????????????log.debug("DateUtil.getTime():"?+?e.getMessage());?? ????????????return?"";?? ????????}?? ????}?? ?? ?? ????/**?? ?????*?統計時開始日期的默認值,?? ?????*?今年的開始時間?? ?????*/?? ????public?static?String?getStartDate(){?? ????????try{?? ????????????return?getYear()?+?"-01-01";?? ????????}?catch(Exception?e){?? ????????????log.debug("DateUtil.getStartDate():"?+?e.getMessage());?? ????????????return?"";?? ????????}?? ????}?? ?? ????/**?? ?????*?統計時結束日期的默認值?? ?????*/?? ????public?static?String?getEndDate(){?? ????????try{?? ????????????return?getDate();?? ????????}?catch(Exception?e){?? ????????????log.debug("DateUtil.getEndDate():"?+?e.getMessage());?? ????????????return?"";?? ????????}?? ????}?? ?? ?? ????/**?? ?????*?獲得服務器當前日期的年份?? ?????*/?? ????public?static?String?getYear(){?? ????????try{?? ????????????//返回的int型，需要字符串轉換?? ????????????return?String.valueOf(cale.get(Calendar.YEAR));?? ????????}?catch(Exception?e){?? ????????????log.debug("DateUtil.getYear():"?+?e.getMessage());?? ????????????return?"";?? ????????}?? ????}?? ?? ????/**?? ?????*?獲得服務器當前日期的月份?? ?????*/?? ????public?static?String?getMonth(){?? ????????try{?? ????????????//一個數字格式，非常好?? ????????????java.text.DecimalFormat?df?=?new?java.text.DecimalFormat();?? ????????????df.applyPattern("00");?? ????????????return?df.format((cale.get(Calendar.MONTH)?+?1));?? ????????????//return?String.valueOf(cale.get(Calendar.MONTH)?+?1);?? ????????}?catch(Exception?e){?? ????????????log.debug("DateUtil.getMonth():"?+?e.getMessage());?? ????????????return?"";?? ????????}?? ????}?? ?? ????/**?? ?????*?獲得服務器在當前月中天數?? ?????*/?? ????public?static?String?getDay(){?? ????????try{?? ????????????return?String.valueOf(cale.get(Calendar.DAY_OF_MONTH));?? ????????}?catch(Exception?e){?? ????????????log.debug("DateUtil.getDay():"?+?e.getMessage());?? ????????????return?"";?? ????????}?? ????}?? ?? ????/**?? ?????*?比較兩個日期相差的天數,?? ?????*?第一個日期要比第二個日期要晚?? ?????*/?? ????public?static?int?getMargin(String?date1,String?date2){?? ????????int?margin;?? ????????try{?? ????????????ParsePosition?pos?=?new?ParsePosition(0);?? ????????????ParsePosition?pos1?=?new?ParsePosition(0);?? ????????????Date?dt1?=?sdf.parse(date1,pos);?? ????????????Date?dt2?=?sdf.parse(date2,pos1);?? ????????????long?l?=?dt1.getTime()?-?dt2.getTime();?? ????????????margin?=?(int)(l?/?(24?*?60?*?60?*?1000));?? ????????????return?margin;?? ????????}?catch(Exception?e){?? ????????????log.debug("DateUtil.getMargin():"?+?e.toString());?? ????????????return?0;?? ????????}?? ????}?? ?? ?? ????/**?? ?????*?比較兩個日期相差的天數，格式不一樣?? ?????*?第一個日期要比第二個日期要晚?? ?????*/?? ????public?static?double?getDoubleMargin(String?date1,String?date2){?? ????????double?margin;?? ????????try{?? ????????????ParsePosition?pos?=?new?ParsePosition(0);?? ????????????ParsePosition?pos1?=?new?ParsePosition(0);?? ????????????Date?dt1?=?sdf2.parse(date1,pos);?? ????????????Date?dt2?=?sdf2.parse(date2,pos1);?? ????????????long?l?=?dt1.getTime()?-?dt2.getTime();?? ????????????margin?=?(l?/?(24?*?60?*?60?*?1000.00));?? ????????????return?margin;?? ????????}?catch(Exception?e){?? ????????????log.debug("DateUtil.getMargin():"?+?e.toString());?? ????????????return?0;?? ????????}?? ????}?? ?? ?? ????/**?? ?????*?比較兩個日期相差的月數?? ?????*/?? ????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){?? ????????????log.debug("DateUtil.getMargin():"?+?e.toString());?? ????????????return?0;?? ????????}?? ????}?? ?? ????/**?? ?????*?返回日期加X天后的日期?? ?????*/?? ????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.format(gCal.getTime());?? ????????}?catch(Exception?e){?? ????????????log.debug("DateUtil.addDay():"?+?e.toString());?? ????????????return?getDate();?? ????????}?? ????}?? ?? ????/**?? ?????*?返回日期加X月后的日期?? ?????*/?? ????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.format(gCal.getTime());?? ????????}?catch(Exception?e){?? ????????????log.debug("DateUtil.addMonth():"?+?e.toString());?? ????????????return?getDate();?? ????????}?? ????}?? ?? ????/**?? ?????*?返回日期加X年后的日期?? ?????*/?? ????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.format(gCal.getTime());?? ????????}?catch(Exception?e){?? ????????????log.debug("DateUtil.addYear():"?+?e.toString());?? ????????????return?"";?? ????????}?? ????}?? ?? ?? ????/**?? ?????*?返回某年某月中的最大天?? ?????*/?? ????public?static?int?getMaxDay(String?year,String?month){?? ????????int?day?=?0;?? ????????try{?? ????????????int?iyear?=?Integer.parseInt(year);?? ????????????int?imonth?=?Integer.parseInt(month);?? ????????????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){?? ????????????log.debug("DateUtil.getMonthDay():"?+?e.toString());?? ????????????return?1;?? ????????}?? ????}?? ?????? ?? ?? ????/**?? ?????*?格式化日期?? ?????*/?? ????@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.format(rolcale.getTime());?? ????????????return?temp;?? ????????}catch(Exception?e){?? ????????????return?"";?? ????????}?? ????}?? ?? ????/**?? ?????*??? ?????*?返回默認的日期格式?? ?????*??? ?????*/?? ????public?static?synchronized?String?getDatePattern()?{?? ????????defaultDatePattern?=?"yyyy-MM-dd";?? ????????return?defaultDatePattern;?? ????}?? ?? ????/**?? ?????*?將指定日期按默認格式進行格式代化成字符串后輸出如：yyyy-MM-dd?? ?????*/?? ????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);?? ????}?? ?? ?? ?? ????/**?? ?????*?取得給定日期的時間字符串，格式為當前默認時間格式?? ?????*/?? ????public?static?String?getTimeNow(Date?theTime)?{?? ????????return?getDateTime(timePattern,?theTime);?? ????}?? ?? ????/**?? ?????*?取得當前時間的Calendar日歷對象?? ?????*/?? ????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;?? ????}?? ?? ????/**?? ?????*?將日期類轉換成指定格式的字符串形式?? ?????*/?? ????public?static?final?String?getDateTime(String?aMask,?Date?aDate)?{?? ????????SimpleDateFormat?df?=?null;?? ????????String?returnValue?=?"";?? ?? ????????if?(aDate?==?null)?{?? ????????????log.error("aDate?is?null!");?? ????????}?else?{?? ????????????df?=?new?SimpleDateFormat(aMask);?? ????????????returnValue?=?df.format(aDate);?? ????????}?? ????????return?(returnValue);?? ????}?? ?????? ????/**?? ?????*?將指定的日期轉換成默認格式的字符串形式?? ?????*/?? ????public?static?final?String?convertDateToString(Date?aDate)?{?? ????????return?getDateTime(getDatePattern(),?aDate);?? ????}?? ?? ?????? ????/**?? ?????*?將日期字符串按指定格式轉換成日期類型?? ?????*?@param?aMask?指定的日期格式，如:yyyy-MM-dd??? ?????*?@param?strDate?待轉換的日期字符串?? ?????*/?? ?????? ????public?static?final?Date?convertStringToDate(String?aMask,?String?strDate)?? ??????throws?ParseException?{?? ????????SimpleDateFormat?df?=?null;?? ????????Date?date?=?null;?? ????????df?=?new?SimpleDateFormat(aMask);?? ?? ????????if?(log.isDebugEnabled())?{?? ????????????log.debug("converting?'"?+?strDate?+?"'?to?date?with?mask?'"?? ??????????????????????+?aMask?+?"'");?? ????????}?? ????????try?{?? ????????????date?=?df.parse(strDate);?? ????????}?catch?(ParseException?pe)?{?? ????????????log.error("ParseException:?"?+?pe);?? ????????????throw?pe;?? ????????}?? ????????return?(date);?? ????}?? ?????? ????/**?? ?????*?將日期字符串按默認格式轉換成日期類型?? ?????*/?? ????public?static?Date?convertStringToDate(String?strDate)?? ??????throws?ParseException?{?? ????????Date?aDate?=?null;?? ?? ????????try?{?? ????????????if?(log.isDebugEnabled())?{?? ????????????????log.debug("converting?date?with?pattern:?"?+?getDatePattern());?? ????????????}?? ????????????aDate?=?convertStringToDate(getDatePattern(),?strDate);?? ????????}?catch?(ParseException?pe)?{?? ????????????log.error("Could?not?convert?'"?+?strDate?? ??????????????????????+?"'?to?a?date,?throwing?exception");?? ????????????throw?new?ParseException(pe.getMessage(),?? ?????????????????????????????????????pe.getErrorOffset());?? ?????????????????????? ????????}?? ?? ????????return?aDate;?? ????}?? ?????? ????/**?? ?????*?返回一個JAVA簡單類型的日期字符串?? ?????*/?? ????public?static?String?getSimpleDateFormat(){?? ????????SimpleDateFormat?formatter=new?SimpleDateFormat();?? ????????String?NDateTime=formatter.format(new?Date());?? ????????return?NDateTime;?? ????}?? ?????? ????/**?? ?????*?將兩個字符串格式的日期進行比較?? ?????*?@param?last?要比較的第一個日期字符串?? ?????*?@param?now???要比較的第二個日期格式字符串?? ?????*?@return?true(last?在now?日期之前),false(last?在now?日期之后)?? ?????*/?? ????public?static?boolean?compareTo(String?last,?String?now)?{?? ????????try?{?? ????????????SimpleDateFormat?formatter?=?new?SimpleDateFormat(?? ????????????????????"yyyy-MM-dd?HH:mm:ss");?? ????????????Date?temp1?=?formatter.parse(last);?? ????????????Date?temp2?=?formatter.parse(now);?? ????????????if?(temp1.after(temp2))?? ????????????????return?false;?? ????????????else?if?(temp1.before(temp2))?? ????????????????return?true;?? ????????}?catch?(ParseException?e)?{?? ????????????log.debug(e.getMessage());?? ????????}?? ????????return?false;?? ????}?????? ?????? ????protected?Object?convertToDate(Class?type,?Object?value)?{?? ????????DateFormat?df?=?new?SimpleDateFormat(TS_FORMAT);?? ????????if?(value?instanceof?String)?{?? ????????????try?{?? ????????????????if?(StringUtils.isEmpty(value.toString()))?{?? ????????????????????return?null;?? ????????????????}?? ????????????????return?df.parse((String)?value);?? ????????????}?catch?(Exception?pe)?{?? ????????????????throw?new?ConversionException("Error?converting?String?to?Timestamp");?? ????????????}?? ????????}?? ?? ????????throw?new?ConversionException("Could?not?convert?"?? ????????????????+?value.getClass().getName()?+?"?to?"?+?type.getName());?? ????}?? ?? ?? ?? ?? ?????? ????/**?? ?????*??為查詢日期添加最小時間?? ?????*??@param?目標類型Date?? ?????*??@param?轉換參數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;?? ????????}?? ????}?? ?? ?? ?????? ????/**?? ?????*?為查詢日期添加最大時間?? ?????*??@param?目標類型Date?? ?????*??@param?轉換參數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;?? ????????}?? ????}?? ?????? ?? ?????? ????/**?? ?????*?返回系統現在年份中指定月份的天數?? ?????*?@param?月份month?? ?????*?@return?指定月的總天數?? ?????*/?? ????@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數?? ?????*?@param?年份year?? ?????*?@param?月份month?? ?????*?@return?指定月的總天數?? ?????*/?? ????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]+"";?? ????????}?? ????}?? ?????? ????/**?? ?????*?取得當前時間的日戳?? ?????*?@return?? ?????*/?? ????@SuppressWarnings("deprecation")?? ????public?static?String?getTimestamp(){?? ????????Date?date=new?Date();?? ????????String?timestamp=""+(date.getYear()+1900)+date.getMonth()+date.getDate()+date.getMinutes()+date.getSeconds()+date.getTime();?? ????????return?timestamp;?? ????}?? ????/**?? ?????*?取得指定時間的日戳?? ?????*?@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(DateUtil.getDate());//獲取日期格式為2010-08-12?? ????????System.out.println(DateUtil.getDateTime());//獲取日期格式為2010-08-12?18:08:21?? ????????System.out.println(DateUtil.getTime());//獲取日期格式為18:08:21?? ????????System.out.println(DateUtil.getYear());//獲取當前時間年份2010?? ????????System.out.println(DateUtil.getMonth());//獲取當年時間月份08?? ????????System.out.println(DateUtil.getStartDate());//獲取2010-01-01?? ????????System.out.println(DateUtil.getEndDate());//2010-08-12?? ????????System.out.println(DateUtil.getDay());//獲得服務器在當前月中已經過了的天數12?? ????????System.out.println(DateUtil.getMargin("2010-05-02",?"2010-04-01"));//比較兩個日期相差的天數?? ????????System.out.println(DateUtil.getDoubleMargin("2010-05-07?23:22:11",?"2010-04-01?01:33:33"));?? ????}?? }?
轉載于:https://my.oschina.net/u/859757/blog/89247
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