Java中Date日期时间的工具类

package me.xueyao.date;import java.sql.Timestamp;import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.*;/*** 日期工具* @author tiant5**/public class DateUtils {public static final String C_DATE_DIVISION = "-";public static final String C_TIME_PATTON_DEFAULT = "yyyy-MM-dd HH:mm:ss";public static final String C_TIME_PATTON_DEFAULT_WITHOUT_SS = "yyyy-MM-dd HH:mm";public static final String C_TIME_PATTON_DEFAULTS = "yyyy{MM-dd HH:mm}ss";public static final String C_TIME_PATTON_DEFAULTY = "MM-dd HH:mm";public static final String C_DATE_PATTON_DEFAULT = "yyyy-MM-dd";public static final String C_DATE_PATTON_DEFAULT_S = "yyyy/MM/dd";public static final String C_DATE_PATTON_yyyyMM = "yyyy-MM";public static final String C_DATA_PATTON_YYYYMMDD = "yyyyMMdd";public static final String C_TIME_PATTON_HHMMSS = "HHmmss";public static final String C_TIME_PATTON_hhmmss = "HH:mm:ss";public static final String C_TIME_PATTON_hhmm = "HH:mm";public static final String C_TIME_PATTON_yyyyMMddHHmmss = "yyyyMMddHHmmss";public static final String C_TIME_PATTON_yyyy = "yyyy";public static final String C_DATA_PATTON_YYMMDD = "yyMMdd";public static final int C_ONE_SECOND = 1000;public static final int C_ONE_MINUTE = 60 * C_ONE_SECOND;public static final int C_ONE_HOUR = 60 * C_ONE_MINUTE;public static final long C_ONE_DAY = 24 * C_ONE_HOUR;/*** 计算天数差* @param date1* @param date2* @return*/public static int diffDate(Date date1, Date date2){return (int)((date1.getTime()-date2.getTime())/(24*60*60*1000));}/*** 获取当前日期* * @return DATE*/public static Date getCurrentDate() {Calendar cal = Calendar.getInstance();Date currDate = cal.getTime();return currDate;}/*** 获取当前日期字符串* * @return String*/public static String getCurrentDateStr() {Calendar cal = Calendar.getInstance();Date currDate = cal.getTime();return format(currDate);}/*** 获取当前日期字符串* * @return String*/public static String getCurrentTimeStr() {Calendar cal = Calendar.getInstance();return formatTime(cal.getTime());}/*** 按指定格式获取当前时间字符串* * @param strFormat* @return String*/public static String getCurrentDateStr(String strFormat) {Calendar cal = Calendar.getInstance();Date currDate = cal.getTime();return format(currDate, strFormat);}/*** 获取当前时间 yyyyMMddHHmmss* @return String*/ public static String getCurrTime() {Date now = new Date();SimpleDateFormat outFormat = new SimpleDateFormat(C_TIME_PATTON_yyyyMMddHHmmss);String s = outFormat.format(now);return s;}/*** 将字符类型转为日期类型(yyyy-MM-dd)* * @param dateValue* @return Date*/public static Date parseDate(String dateValue) {return parseDate(C_DATE_PATTON_DEFAULT, dateValue);}/*** 将字符串转为时间类型"HH:mm:ss"*/public static Date parseHour(String dateValue){return parseDate(C_TIME_PATTON_hhmmss, dateValue);}/*** * @describe 获得当前时间*/public static String getCurrentDateTime(){Calendar cal = Calendar.getInstance();return format(cal.getTime(), C_TIME_PATTON_hhmmss);}/*** 将字符类型转为日期类型(yyyy-MM-dd HH:mm:ss)* * @param dateValue* @return Date*/public static Date parseDateTime(String dateValue) {return parseDate(C_TIME_PATTON_DEFAULT, dateValue);}/*** 按指定类型将字符类型转为日期类型* * @param strFormat* @param dateValue* @return Date*/public static Date parseDate(String strFormat, String dateValue) {if (dateValue == null)return null;if (strFormat == null)strFormat = C_TIME_PATTON_DEFAULT;SimpleDateFormat dateFormat = new SimpleDateFormat(strFormat);Date newDate = null;try {newDate = dateFormat.parse(dateValue);} catch (ParseException pe) {newDate = null;}return newDate;}/*** 将Timestamp类型的日期转换为系统参数定义的格式的字符串* * @param aTs_Datetime* 需要转换的日期。* @return 转换后符合给定格式的日期字符串*/public static String format(Date aTs_Datetime) {return format(aTs_Datetime, C_DATE_PATTON_DEFAULT);}/*** 将Timestamp类型的日期转换为系统参数定义的格式的字符串* * @param aTs_Datetime yyyy/MM/dd* 需要转换的日期。* @return 转换后符合给定格式的日期字符串*/public static String formatString(Date aTs_Datetime) {return format(aTs_Datetime, C_DATE_PATTON_DEFAULT_S);}/*** 将Timestamp类型的日期转换为系统参数定义的格式的字符串* * @param* 。* @return 转换后符合给定格式的日期字符串*/public static String formatToString(Date Datetime) {String str = "";long current=System.currentTimeMillis();//当前时间毫秒数long zero=current/(1000*3600*24)*(1000*3600*24)-TimeZone.getDefault().getRawOffset();//今天零点零分零秒的毫秒数 Date today= new Timestamp(zero);Date yesterday = addDays(today,-1); if(Datetime.after(today) || Datetime.equals(today)){str = format(Datetime, C_TIME_PATTON_hhmm);}else if(Datetime.after(yesterday)|| Datetime.equals(yesterday)){str = "昨天 "+format(Datetime, C_TIME_PATTON_hhmm);}else{str = format(Datetime, C_TIME_PATTON_DEFAULTY);}return str;}/*** 将Timestamp类型的日期转换为系统参数定义的格式的字符串* * @param aTs_Datetime* 需要转换的日期。* @return 转换后符合给定格式的日期字符串*/public static String formatTime(Date aTs_Datetime) {return format(aTs_Datetime, C_TIME_PATTON_DEFAULTS);}/*** 将Timestamp类型的日期转换为系统参数定义的格式的字符串* * @param aTs_Datetime* 需要转换的日期。* @return 转换后符合给定格式的日期字符串*/public static String formatTimes(Date aTs_Datetime) {return format(aTs_Datetime, C_TIME_PATTON_DEFAULT);}/*** 将Date类型的日期转换为指定格式的字符串* * @param aTs_Datetime* @param as_Pattern* @return*/public static String format(Date aTs_Datetime, String as_Pattern) {if (aTs_Datetime == null || as_Pattern == null)return null;SimpleDateFormat dateFromat = new SimpleDateFormat();dateFromat.applyPattern(as_Pattern);return dateFromat.format(aTs_Datetime);}/*** 将Date类型的时间转换为字符串* * @param* @param* @return*/public static String getFormatTime(Date dateTime) {return format(dateTime, C_TIME_PATTON_HHMMSS);}/*** 将Date类型的时间转换为字符串,保留时分* * @param* @param* @return*/public static String getFormatTimeHM(Date dateTime) {return format(dateTime, "HH:mm");}/*** 将Date类型的时间转换为字符串* * @param* @param* @return*/public static String getFormatTimeAsYMD(Date dateTime) {return format(dateTime, C_DATA_PATTON_YYYYMMDD);}/*** 将Timestamp类型的时间转换为指定格式字符串* * @param aTs_Datetime* @param as_Pattern* @return*/public static String format(Timestamp aTs_Datetime, String as_Pattern) {if (aTs_Datetime == null || as_Pattern == null)return null;SimpleDateFormat dateFromat = new SimpleDateFormat();dateFromat.applyPattern(as_Pattern);return dateFromat.format(aTs_Datetime);}public static Date addYears(Date date, int years){Calendar cal = Calendar.getInstance();cal.setTime(date);cal.add(Calendar.YEAR, years);return cal.getTime();}/*** 取得指定日期N天后的日期* * @param date* @param days* @return*/public static Date addDays(Date date, int days) {Calendar cal = Calendar.getInstance();cal.setTime(date);cal.add(Calendar.DAY_OF_MONTH, days);return cal.getTime();}/*** 取得指定日期N月后的日期* * @param date* @param* @return*/public static Date addMonth(Date date, int month){Calendar cal = Calendar.getInstance();cal.setTime(date);cal.add(Calendar.MONTH,month);return cal.getTime();}/*** 取得指定日期N小时的天数* * @param date* @param* @return*/public static Date addHour(Date date, int time) {Calendar cal = Calendar.getInstance();cal.setTime(date);cal.add(Calendar.HOUR_OF_DAY, time);return cal.getTime();}/*** 计算两个日期之间相差的天数(date2 - date1)* * @param date1* @param date2* @return*/public static int daysBetween(Date date1, Date date2) {Calendar cal = Calendar.getInstance();cal.setTime(date1);long time1 = cal.getTimeInMillis();cal.setTime(date2);long time2 = cal.getTimeInMillis();long between_days = (time2 - time1) / (1000 * 3600 * 24);return Integer.parseInt(String.valueOf(between_days));}/*** 计算两个日期之间相差的毫秒数(date2 - date1)* * @param date1* @param date2* @return*/public static long millSecondBetween(Date date1, Date date2) {Calendar cal = Calendar.getInstance();cal.setTime(date1);long time1 = cal.getTimeInMillis();cal.setTime(date2);long time2 = cal.getTimeInMillis();long between_days = time2 - time1;return between_days;}/*** 判断时间是否在给定时间之间* @param d 中间时间* @param* @param* @return*/public static int dayTimesBetween(Date d,Date begin_date, Date end_date) {int i = 0;Calendar cal = Calendar.getInstance();cal.setTime(d);long t = cal.getTimeInMillis();cal.setTime(begin_date);long begin_date_l = cal.getTimeInMillis();cal.setTime(end_date);long end_date_l = cal.getTimeInMillis();if (t-begin_date_l>=0&&t-end_date_l<=0) {i = 1;}return i;}/*** 获取时间的月份* @param nowDate* @return*/public static int getMonth(Date nowDate){int re=0;Calendar nowCalendar=Calendar.getInstance();nowCalendar.setTime(nowDate);re=nowCalendar.get(2)+1; return re;}/*** 获取时间的年份* @param nowDate* @return*/public static int getYear(Date nowDate){int re=0;Calendar nowCalendar=Calendar.getInstance();nowCalendar.setTime(nowDate);re=nowCalendar.get(1); return re;}/*** 获取时间的在什么时间段* @param nowDate* @return*/public static String getHourStr(Date nowDate){int re=0;int re2=0;String date= "";Calendar nowCalendar=Calendar.getInstance();nowCalendar.setTime(nowDate);re=nowCalendar.get(11); re2 = re+1;if(re<10){date = "0"+re;}else{date = re+"";}if(re2<10){date = date + "-0"+re2;}else{date = date +"-"+re2;}return date;}/*** 获取时间的小时* @param nowDate* @return*/public static int getHour(Date nowDate){int re=0;Calendar nowCalendar=Calendar.getInstance();nowCalendar.setTime(nowDate);re=nowCalendar.get(11); return re;}/*** 获取时间的星期* @param nowDate* @return*/public static int getDay0fWeek(Date nowDate){int re=0;Calendar nowCalendar=Calendar.getInstance();nowCalendar.setTime(nowDate);re=nowCalendar.get(7); return re;}/*** 获取时间，是一个月的第几天* @param nowDate* @return*/public static int getDay0fMonth(Date nowDate){int re=0;Calendar nowCalendar=Calendar.getInstance();nowCalendar.setTime(nowDate);re=nowCalendar.get(5); return re;}/*** 将string 装为date* @param textDate* @return*/public static Date getDate(String textDate) {SimpleDateFormat sdfInput = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");Date date = null;try {date = sdfInput.parse(textDate);} catch (ParseException ex) {}return date;}/** 获取默认的开始时间，取服务器当前时间*/public static Date toDayStartTimeDefault(){SimpleDateFormat f = new SimpleDateFormat("yyyy-MM-dd"); Date currentTime2 =new Date(); String endTimeString = f.format(currentTime2)+" 00:00:00";Date endTime=getDate(endTimeString);return endTime;}/** 获取默认的结束时间，取服务器当前时间*/public static Date toDayEndTimeDefault(){SimpleDateFormat f = new SimpleDateFormat("yyyy-MM-dd"); Date currentTime2 =new Date(); String endTimeString = f.format(currentTime2)+" 23:59:59";Date endTime=getDate(endTimeString);return endTime;}/*** 获取当天2点钟的时间*/public static Date toDayTime2Default(){SimpleDateFormat f = new SimpleDateFormat("yyyy-MM-dd"); Date currentTime2 =new Date(); String endTimeString = f.format(currentTime2)+" 02:00:00";Date endTime=getDate(endTimeString);return endTime;}/*** 获取格式为:MM-dd的时间字符串*/public static String getShortDate(Date dateTime){if(dateTime == null) return "";String time = formatTime(dateTime);return time.substring(5, 10);}/*** 获取格式为:MM-dd HH:mm的时间字符串*/public static String getShortTime(Date dateTime){if(dateTime == null) return "";String time = formatTime(dateTime);return time.substring(5, 16);}/*** 计算两个日期之间相差的天数，小时，分钟(date2 - date1)*/public static String timesBetween(Date date1, Date date2) {String re = ""; long timeBetweenLong = date1.getTime()- date2.getTime() ;long dayTimeLong = timeBetweenLong/(24*60*60*1000);if(dayTimeLong > 0){re = re+ dayTimeLong +"天";}long hoursTimeLong = timeBetweenLong%(24*60*60*1000)/(60*60*1000); if(hoursTimeLong > 0){re = re+ hoursTimeLong +"小时";}long mTimeLong = timeBetweenLong%(24*60*60*1000)%(60*60*1000)/(60*1000);re = re+ mTimeLong +"分钟";return re ;}/*** 将日期文字转化为具体的日期* * @return*/public static Date string2Date(String dateString, String formatString) {SimpleDateFormat formate = new SimpleDateFormat(formatString);Date date;try {date = formate.parse(dateString);return date;} catch (ParseException e) {e.printStackTrace();}return null;}/*** 返回为相对时间串* @param date* @return*/public static String trans4TimeStr(Date date){if (date == null){return "出错";}Date curDate = new Date();long mTime = date.getTime();long cTime = curDate.getTime();long result = cTime - mTime;double dayTime = (double)result / (double)(1000 * 60 * 60 * 24); if ( dayTime < 0){return "时间出错";}if ( dayTime < 1){int hour = (int)(dayTime * 24);if (hour == 0){int minitus = (int)(dayTime * 24 * 60);return minitus + "分钟前";}return hour + "小时前";}return (int)dayTime + "天前";}/*** * 将日期转化为字符串* @return*/public static String Date2String(Date date, String formatString) {SimpleDateFormat formate = new SimpleDateFormat(formatString);return formate.format(date);}/*** 返回为1表示星期一* 返回为7表示星期天* 其它一次类推* @param date* @return*/public static int indexOfCurrentWeek(Date date){Calendar cal = Calendar.getInstance(); cal.setTime(date); int w=cal.get(Calendar.DAY_OF_WEEK)-1; if(w==0){w = 7;}return w;}/*** 返回为1表示星期一* 返回为7表示星期天* 其它一次类推,返回月日，周几 -上下午* @param date* @return*/@SuppressWarnings("deprecation")public static String indexOfDateWeek(Date date){String DateStr = "";String str = "";Calendar cal = Calendar.getInstance(); cal.setTime(date); int w=cal.get(Calendar.DAY_OF_WEEK)-1; if(w==0){str = "周日";}if(w==1){str = "周一";}if(w==2){str = "周二";}if(w==3){str = "周三";}if(w==4){str = "周四";}if(w==5){str = "周五";}if(w==6){str = "周六";}if(getHour(date)<=12){DateStr = getMonth(date)+"月"+date.getDate()+"日 "+" "+str+"-上午";}else{DateStr = getMonth(date)+"月"+date.getDate()+"日 "+" "+str+"-下午";}return DateStr;}/*** 返回为1表示星期一* 返回为7表示星期天* 其它一次类推,返回年月日，-上下午+时分* @param date* @return*/@SuppressWarnings("deprecation")public static String DateWeek(Date date){String DateStr = "";Calendar cal = Calendar.getInstance(); cal.setTime(date); if(getHour(date)<=12){DateStr = format(date)+" "+"-上午"+date.getHours()+":"+(date.getMinutes()<10?"0"+date.getMinutes():date.getMinutes())+"前";}else{DateStr = format(date)+" "+"-下午"+date.getHours()+":"+(date.getMinutes()<10?"0"+date.getMinutes():date.getMinutes())+"前";}return DateStr;}public static String getTimeString(Date date, String style) {SimpleDateFormat myFmt2 = new SimpleDateFormat(style);return myFmt2.format(date);}/*** 是否到期* @param date* @return*/public static boolean isTimeUp(Date date){Calendar cal = Calendar.getInstance(); return cal.after(date);}/** 获取今天N小时N分N秒的时间*/public static Date get_today_hour_minite(int hour,int minute,int second){Calendar c = Calendar.getInstance();c.set(Calendar.HOUR_OF_DAY, hour);c.set(Calendar.MINUTE, minute);c.set(Calendar.SECOND, second);return c.getTime();}/*** 比较两个日期的大小* @param* @param* @return*/public static int compare_time(String date1,String date2){java.text.DateFormat df=new SimpleDateFormat("yyyy-MM-dd");Calendar c1= Calendar.getInstance();Calendar c2= Calendar.getInstance();try {c1.setTime(df.parse(date1));c2.setTime(df.parse(date2));}catch(ParseException e){System.err.println("格式不正确");}int result=pareTo(c2);return result;}/*** 将当前时间增加分钟数*/public static Date addMinutes(Date date,int minutes){Calendar cal = Calendar.getInstance();cal.setTime(date);cal.add(Calendar.MINUTE, minutes);return cal.getTime();}/*** * @Description:返回时间间隔内的日期* @param begin_date* @param end_date* @return*/public static List<String> timeSepreate(String begin_date,String end_date){List<String> str = new ArrayList<String>();Date begin_d = DateUtils.parseDate(begin_date);Date end_d = DateUtils.parseDate(end_date);String begin_d_d = "";do{begin_d_d = DateUtils.format(begin_d);str.add(begin_d_d);begin_d = DateUtils.addDays(begin_d, 1);}while(pareTo(end_d)<=0);return str;}/*** 将当前时间增加秒钟数*/public static Date addSeconds(Date date,int seconds){Calendar cal = Calendar.getInstance();cal.setTime(date);cal.add(Calendar.SECOND, seconds);return cal.getTime();}}