时间处理函数工具:得到时间戳,周一,周末,时间更改,时间精确计算。。。。
import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; import java.util.GregorianCalendar; import java.util.TimeZone; /** * 时间处理函数 * * @20080509 15:50 */ public class DateUtil { private static final String DEFAULT_PATTERN = "yyyy-MM-dd HH:mm:ss"; public static final String TIME_YEAR = "yyyy"; public static final String TIME_MONEN = "MM"; public static final String TIME_DAY = "dd"; public static String getDate(String interval, Date starttime, String pattern) { Calendar temp = Calendar.getInstance(TimeZone.getDefault()); temp.setTime(starttime); temp.add(temp.MONTH, Integer.parseInt(interval)); SimpleDateFormat sdf = new SimpleDateFormat(pattern); return sdf.format(temp.getTime()); } /** * 将字符串类型转换为时间类型 * * @return */ public static Date str2Date(String str) { Date d = null; SimpleDateFormat sdf = new SimpleDateFormat(DEFAULT_PATTERN); try { d = sdf.parse(str); } catch (Exception e) { e.printStackTrace(); } return d; } public static Date str2Date(String str, String pattern) { Date d = null; SimpleDateFormat sdf = new SimpleDateFormat(pattern); try { d = sdf.parse(str); } catch (Exception e) { e.printStackTrace(); } return d; } /** * 将时间格式化 * * @return */ public static Date DatePattern(Date date) { SimpleDateFormat sdf = new SimpleDateFormat(DEFAULT_PATTERN); try { String dd = sdf.format(date); date = str2Date(dd); } catch (Exception e) { e.printStackTrace(); } return date; } /** * 将时间格式化 */ public static Date DatePattern(Date date, String pattern) { SimpleDateFormat sdf = new SimpleDateFormat(pattern); try { String dd = sdf.format(date); date = str2Date(dd, pattern); } catch (Exception e) { e.printStackTrace(); } return date; } public static String date2Str(Date date) { SimpleDateFormat sdf = new SimpleDateFormat(DEFAULT_PATTERN); return sdf.format(date); } public static String date2Str(Date date, String format) { SimpleDateFormat sdf = new SimpleDateFormat(format); return sdf.format(date); } /** * 获取昨天 * * @param date * @return * @throws Exception */ public static Date getLastDate(Date date) { Calendar calendar = Calendar.getInstance(TimeZone.getDefault()); calendar.setTime(date); calendar.add(calendar.DATE, -1); return str2Date(date2Str(calendar.getTime())); } /** * 获取前几天 * @param date * @return */ public static Date getBeforeDate(Date date,int dates) { Calendar calendar = Calendar.getInstance(TimeZone.getDefault()); calendar.setTime(date); calendar.add(calendar.DATE, -dates); return str2Date(date2Str(calendar.getTime())); } /** * 获取上周第一天(周一) * * @param date * @return * @throws Exception */ public static Date getLastWeekStart(Date date) { Calendar calendar = Calendar.getInstance(TimeZone.getDefault()); calendar.setTime(date); int i = calendar.get(calendar.DAY_OF_WEEK) - 1; int startnum = 0; if (i == 0) { startnum = 7 + 6; } else { startnum = 7 + i - 1; } calendar.add(calendar.DATE, -startnum); return str2Date(date2Str(calendar.getTime())); } /** * 获取上周最后一天(周末) * * @param date * @return * @throws Exception */ public static Date getLastWeekEnd(Date date) { Calendar calendar = Calendar.getInstance(TimeZone.getDefault()); calendar.setTime(date); int i = calendar.get(calendar.DAY_OF_WEEK) - 1; int endnum = 0; if (i == 0) { endnum = 7; } else { endnum = i; } calendar.add(calendar.DATE, -(endnum - 1)); return str2Date(date2Str(calendar.getTime())); } /** * 根据年和月得到天数 * @param num 月 * @param year 年 * @return */ public static int getday(int num,int year){ if(num==1 || num==3 || num==5 || num==7 || num==8 || num==10 || num==12){ return 31; }else if(num==2){ //判断是否为闰年 if(year%400==0 || (year%4==0 && year%100!=0)){ return 29; }else{ return 28; } }else{ return 30; } } /* * 计算当前日期距离下个月还有多少天 */ public static int getdaymis(Date time){ int year = Integer.parseInt( new SimpleDateFormat(TIME_YEAR).format(time));//年 int mm = Integer.parseInt( new SimpleDateFormat(TIME_MONEN).format(time));//月 int dd = Integer.parseInt( new SimpleDateFormat(TIME_DAY).format(time));//日 //获取当前年月的总天数 int sdd = getday(mm,year); return sdd-dd; } /** * 日期转秒数 * @param dateString * @return */ public static long getTime(String dateString) { long time = 0; try { Date ret = null; SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); ret = sdf.parse(dateString); time = ret.getTime()/1000; } catch (Exception e) { } return time; } /** * 精确计算时间差,精确到日 * @param fistill 起始日期 * @param nowtime 结束日期 * @param type type为1返回年月日(如:2年3个月零5天) 否则返回总的天数 * @return */ public static String patienage(Date fistill,Date nowtime,Integer type){ int fyear = Integer.parseInt( new SimpleDateFormat(TIME_YEAR).format(fistill));//起始年 int fmm = Integer.parseInt( new SimpleDateFormat(TIME_MONEN).format(fistill));//起始月 int fdd = Integer.parseInt( new SimpleDateFormat(TIME_DAY).format(fistill));//起始日 int nyear = Integer.parseInt( new SimpleDateFormat(TIME_YEAR).format(nowtime));//结束年 int nmm = Integer.parseInt( new SimpleDateFormat(TIME_MONEN).format(nowtime));//结束月 int ndd = Integer.parseInt( new SimpleDateFormat(TIME_DAY).format(nowtime));//结束日 int cyear = nyear - fyear; int cmm = nmm - fmm; int cdd = ndd - fdd; int zyear = 0; int zmm = 0; int zdd = 0; int countddd = 0; //年月日累计天数 if(cdd<0){ if(cmm<0){ zyear = cyear - 1; zmm = (cmm + 12)-1; int dd = getday(zmm,nyear-1); zdd = dd + cdd; countddd = zyear*365+zmm*30+zdd; }else if(cmm==0){ zyear = cyear - 1; zmm = 12-1; int dd = getday(zmm,nyear-1); zdd = dd + cdd; countddd = zyear*365+zmm*30+zdd; }else{ zyear = cyear; zmm = cmm - 1; int dd = getday(zmm,nyear); zdd = dd + cdd; countddd = zyear*365+zmm*30+zdd; } }else if(cdd==0){ if(cmm<0){ zyear = cyear - 1; zmm = cmm + 12; zdd = 0; countddd = zyear*365+zmm*30; }else if(cmm==0){ zyear = cyear; zmm = 0; zdd = 0; countddd = zyear*365+zmm*30; }else{ zyear = cyear; zmm = cmm; zdd = 0; countddd = zyear*365+zmm*30; } }else{ if(cmm<0){ zyear = cyear - 1; zmm = cmm + 12; zdd = cdd; countddd = zyear*365+zmm*30+zdd; }else if(cmm==0){ zyear = cyear; zmm = 0; zdd = cdd; countddd = zyear*365+zmm*30+zdd; }else{ zyear = cyear; zmm = cmm; zdd = cdd; countddd = zyear*365+zmm*30+zdd; } } String ptime = null; if(zdd!=0){ if(zmm!=0){ if(zyear!=0){ ptime = zyear+"年"+zmm+"个月"+"零"+zdd+"天"; }else{ ptime = zmm+"个月"+"零"+zdd+"天"; } }else{ if(zyear!=0){ ptime = zyear+"年"+"零"+zdd+"天"; }else{ ptime = zdd+"天"; } } }else{ if(zmm!=0){ if(zyear!=0){ ptime = zyear+"年"+zmm+"个月"; }else{ ptime = zmm+"个月"; } }else{ if(zyear!=0){ ptime = zyear+"年"; }else{ ptime = null; } } } if(type==1){ return ptime; //返回年月日(如:2年3个月零5天) }else{ return String.valueOf(countddd); //返回总天数 } } /** * 得到月数 * @param year 年数差 * @param month 月数差 * @return */ public static int getCmm(Integer year,Integer month){ int zmm = 0; if(month < 0){ zmm = (month + 12)+(year-1)*12; }else if(month == 0){ zmm = year*12; }else{ zmm = year*12+month; } return zmm; } /** * 改更现在时间 */ public static Date changeDate(String type, int value) { Calendar calendar = Calendar.getInstance(TimeZone.getDefault()); if (type.equals("month")) { calendar.set(Calendar.MONTH, calendar.get(Calendar.MONTH) + value); } else if (type.equals("date")) { calendar.set(Calendar.DATE, calendar.get(Calendar.DATE) + value); } return calendar.getTime(); } /** * 更改时间 */ public static Date changeDate(Date date, String type, int value) { if (date != null) { // Calendar calendar = Calendar.getInstance(TimeZone.getDefault()); Calendar calendar = new GregorianCalendar(); calendar.setTime(date); // Calendar calendar = Calendar. if (type.equals("month")) { calendar.set(Calendar.MONTH, calendar.get(Calendar.MONTH) + value); } else if (type.equals("date")) { calendar.set(Calendar.DATE, calendar.get(Calendar.DATE) + value); } else if (type.endsWith("year")) { calendar.set(Calendar.YEAR, calendar.get(Calendar.YEAR) + value); } return calendar.getTime(); } return null; } /** * haoxw 比较时间是否在这两个时间点之间 * * @param time1 * @param time2 * @return */ public static boolean checkTime(String time1, String time2) { Calendar calendar = Calendar.getInstance(); Date date1 = calendar.getTime(); Date date11 = DateUtil.str2Date(DateUtil.date2Str(date1, "yyyy-MM-dd") + " " + time1);// 起始时间 Calendar c = Calendar.getInstance(); c.add(Calendar.DATE, 1); Date date2 = c.getTime(); Date date22 = DateUtil.str2Date(DateUtil.date2Str(date2, "yyyy-MM-dd") + " " + time2);// 终止时间 Calendar scalendar = Calendar.getInstance(); scalendar.setTime(date11);// 起始时间 Calendar ecalendar = Calendar.getInstance(); ecalendar.setTime(date22);// 终止时间 Calendar calendarnow = Calendar.getInstance(); if (calendarnow.after(scalendar) && calendarnow.before(ecalendar)) { return true; } else { return false; } } /** * haoxw 比较时间是否在这两个时间点之间 * * @param date11 * @param date22 * @return */ public static boolean checkTime(Date date11, Date date22) { Calendar scalendar = Calendar.getInstance(); scalendar.setTime(date11);// 起始时间 Calendar ecalendar = Calendar.getInstance(); ecalendar.setTime(date22);// 终止时间 Calendar calendarnow = Calendar.getInstance(); if (calendarnow.after(scalendar) && calendarnow.before(ecalendar)) { return true; } else { return false; } } public static boolean checkDate(String date1, String date2) { Date date11 = DateUtil.str2Date(date1, "yyyy-MM-dd HH:mm:ss");// 起始时间 Date date22 = DateUtil.str2Date(date2, "yyyy-MM-dd HH:mm:ss");// 终止时间 Calendar scalendar = Calendar.getInstance(); scalendar.setTime(date11);// 起始时间 Calendar ecalendar = Calendar.getInstance(); ecalendar.setTime(date22);// 终止时间 Calendar calendarnow = Calendar.getInstance(); System.out.println(date11.toString()); System.out.println(date22.toString()); System.out.println(scalendar.toString()); System.out.println(ecalendar.toString()); System.out.println(calendarnow.toString()); if (calendarnow.after(scalendar) && calendarnow.before(ecalendar)) { return true; } else { return false; } } /** * 获取interval天之前的日期 * * @param interval * @param starttime * @param pattern * @return */ public static Date getIntervalDate(String interval, Date starttime, String pattern) { Calendar temp = Calendar.getInstance(); temp.setTime(starttime); temp.add(temp.DATE, Integer.parseInt(interval)); SimpleDateFormat sdf = new SimpleDateFormat(pattern); String shijian = sdf.format(temp.getTime()); return str2Date(shijian); } public static Date formatDate(Date date){ SimpleDateFormat bartDateFormat = new SimpleDateFormat("yyyy-MM-dd"); System.out.println(bartDateFormat.format(date)); SimpleDateFormat bartDateFormat1 =new SimpleDateFormat("yyyy-MM-dd"); try { Date date1 = bartDateFormat1.parse(bartDateFormat.format(date)); } catch (ParseException e) { e.printStackTrace(); } System.out.println(date.getTime()); return date; } public static void main(String arf[]) { /*String time1 = "2009-05-07 19:20:00"; String time2 = "2009-05-08 19:30:00"; DateUtil d = new DateUtil(); System.out.println(d.checkDate(time1, time2)); System.out.println(d.date2Str(new Date()));*/ //System.out.println(d.getIntervalDate("-3", new Date(), DEFAULT_PATTERN)); Calendar calendar = Calendar.getInstance(TimeZone.getDefault()); System.out.println(calendar.toString()); System.out.println(DateUtil.str2Date("20090731","yyyyMMdd")); System.out.println(DateUtil.getBeforeDate(new Date(),2 )); System.out.println(DateUtil.DatePattern(new Date())); SimpleDateFormat bartDateFormat = new SimpleDateFormat("yyyy-MM-dd"); Date date = new Date(); System.out.println("date;"+bartDateFormat.format(date)); SimpleDateFormat bartDateFormat1 =new SimpleDateFormat("yyyy-MM-dd"); try { Date date1 = bartDateFormat1.parse(bartDateFormat.format(date)); System.out.println("日期:"+date1); } catch (ParseException e) { e.printStackTrace(); } } }
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