本文共 34508 字，大约阅读时间需要 115 分钟。
package com.xiaobu.base.utils;import java.text.DateFormat;import java.text.ParseException;import java.text.SimpleDateFormat;import java.time.LocalDateTime;import java.time.format.DateTimeFormatter;import java.util.*;import java.util.regex.Matcher;import java.util.regex.Pattern;public class DateUtil { private static final Pattern PATTERN_ = Pattern.compile("^\\d{4}(\\-)\\d{2}(\\-)\\d{2}$"); /** * 当前操作系统日期 Calendar. */ private static Calendar calendar = new GregorianCalendar(TimeZone.getDefault()); /** * 日期格式 默认：yyyyMMdd */ private static final String PATTERN = "yyyyMMdd"; /** * @author xiaobu * @date 2018/11/28 14:34 * @descprition 日期格式 默认：yyyy-MM-dd * @version 1.0 */ private static final String DATE_PATTERN = "yyyy-MM-dd"; /** * 时间格式 默认：HH:mm:ss */ private static final String TIME_PATTERN = "HH:mm:ss"; /*** * @author xiaobu * @date 2018/11/28 14:26 * @descprition 日期格式 yyyy-MM-dd HH:mm:ss * @version 1.0 */ private static final String DATE_TIME_PATTERN = "yyyy-MM-dd HH:mm:ss"; /*** * @author xiaobu * @date 2018/11/28 14:26 * @descprition 日期格式 yyyy-MM-dd HH:mm:ss SSS * @version 1.0 */ private static final String LONG_DATE_TIME_PATTERN= "yyyy-MM-dd HH:mm:ss SSS"; /** * 年 */ private static int year = 0; /** * 月 */ private static int month = 0; /** * 日 */ private static int day = 0; /** * 时 */ private static int hour = 0; /** * 分 */ private static int minute = 0; /** * 秒 */ private static int second = 0; /** * 静态初始化（默认系统当前日期和时间） */ static { year = calendar.get(Calendar.YEAR); month = calendar.get(Calendar.MONTH) + 1; day = calendar.get(Calendar.DAY_OF_MONTH); hour = calendar.get(Calendar.HOUR_OF_DAY); minute = calendar.get(Calendar.MINUTE); second = calendar.get(Calendar.SECOND); } /** * 构造方法 */ public DateUtil() { // Do Nothing } /** * @author xiaobu * @date 2018/11/28 16:55 * @return java.lang.String yyyy-MM-dd * @descprition 获取当前时间的年月日 * @version 1.0 */ public static String getCurrentLocalTimeToStr(){ return getLocalTime(DATE_PATTERN); } /** * @author xiaobu * @date 2018/11/28 16:55 * @return java.lang.String yyyy-MM-dd HH:mm:ss * @descprition 获取当前时间的年月日 * @version 1.0 */ public static String getCurrentLocalTimeToStr1(){ return getLocalTime(DATE_TIME_PATTERN); } /** * @author xiaobu * @date 2018/11/28 16:55 * @return java.lang.String yyyy-MM-dd HH:mm:ss SSS * @descprition 获取当前时间的年月日 * @version 1.0 */ public static String getCurrentLocalTimeToStr2(){ return getLocalTime(LONG_DATE_TIME_PATTERN); } /** * @author xiaobu * @date 2018/11/28 16:55 * @return java.lang.String yyyy-MM-dd * @descprition 获取当前时间的年月日 * @version 1.0 */ public static String getCurrentDateTimeToStr() { return getDateTime(DATE_PATTERN); } /** * @author xiaobu * @date 2018/11/28 16:59 * @return java.lang.String * @descprition 获取当前日期 yyyy-MM-dd HH:mm:ss * @version 1.0 */ public static String getCurrentDateTimeToStr1() { return getDateTime(DATE_TIME_PATTERN); } /** * @author xiaobu * @date 2018/11/28 16:59 * @return java.lang.String * @descprition 获取当前日期 yyyy-MM-dd HH:mm:ss SSS * @version 1.0 */ public static String getCurrentDateTimeToStr2() { return getDateTime(LONG_DATE_TIME_PATTERN); } /** * @return int * @author xiaobu * @date 2018/11/28 16:24 * @descprition 获取系统时间 年 * @version 1.0 */ public static int getYear() { return year; } /** * @return int * @author xiaobu * @date 2018/11/28 16:24 * @descprition 获取系统时间 年 字符串类型 * @version 1.0 */ public static String getStrYear() { return String.valueOf(year); } /** * @return int * @author xiaobu * @date 2018/11/28 16:24 * @descprition 获取系统时间 月 * @version 1.0 */ public static int getMonth() { return month; } /** * @param strDate yyyyMMdd * @return int * @author xiaobu * @date 2018/11/28 16:29 * @descprition 获取传入时间的年份 * @version 1.0 */ public static int getYear(String strDate) { SimpleDateFormat f = new SimpleDateFormat("yyyyMMdd"); Date startDate; int intYear = 0; try { startDate = f.parse(strDate); Calendar starCal = Calendar.getInstance(); starCal.setTime(startDate); intYear = starCal.get(Calendar.YEAR); } catch (ParseException e) { e.printStackTrace(); } return intYear; } /** * @param strDate yyyyMMdd * @return int * @author xiaobu * @date 2018/11/28 16:29 * @descprition 获取传入时间的月份 * @version 1.0 */ public static int getMonth(String strDate) { SimpleDateFormat f = new SimpleDateFormat("yyyyMMdd"); Date startDate; int intMonth = 0; try { startDate = f.parse(strDate); Calendar starCal = Calendar.getInstance(); starCal.setTime(startDate); intMonth = starCal.get(Calendar.MONTH) + 1; } catch (ParseException e) { e.printStackTrace(); } return intMonth; } /** * @param strDate yyyyMMdd * @return java.lang.String * @author xiaobu * @date 2018/11/28 16:31 * @descprition 将短时间格式字符串转换为时间 yyyy-MM-dd * @version 1.0 */ public static String shortToDate(String strDate) { return strDate.substring(0, 4) + "-" + strDate.substring(4, 6) + "-" + strDate.substring(6); } /** * @param strTime HHmmss * @return java.lang.String * @author xiaobu * @date 2018/11/28 16:35 * @descprition 将短时间格式字符串转换为时间 HH:mm:ss * @version 1.0 */ public static String shortToTime(String strTime) { return strTime.substring(0, 2) + ":" + strTime.substring(2, 4) + ":" + strTime.substring(4); } /** * @author xiaobu * @date 2018/11/28 17:17 * @return java.lang.String * @descprition 获取系统当前日期---月 * @version 1.0 */ public static String getStrMonth() { return month >= 10 ? String.valueOf(month) : "0" + String.valueOf(month); } /** * @author xiaobu * @date 2018/11/28 17:29 * @param date Date * @descprition 获取这是这周的第一天 * @version 1.0 */ public static int getWeek(Date date) { Calendar c = Calendar.getInstance(); c.setTime(date); int dayOfWeek = c.get(Calendar.DAY_OF_WEEK); dayOfWeek = dayOfWeek - 1; if (dayOfWeek == 0) { dayOfWeek = 7; } return dayOfWeek; } /** * @author xiaobu * @date 2018/11/28 17:16 * @return int * @descprition 获取系统当前日期---日 * @version 1.0 */ public static int getDay() { return day; } /** * @return int * @author xiaobu * @date 2018/11/28 16:24 * @descprition 获取系统时间 天 * @version 1.0 */ public static String getStrDay() { return day < 10 ? "0" + String.valueOf(day) : String.valueOf(day); } /** * @return int * @author xiaobu * @date 2018/11/28 16:24 * @descprition 获取系统时间 小时 * @version 1.0 */ public static int getHour() { return hour; } /** * @return int * @author xiaobu * @date 2018/11/28 16:24 * @descprition 获取系统时间 分 * @version 1.0 */ public static int getMinute() { return minute; } /** * @return int * @author xiaobu * @date 2018/11/28 16:24 * @descprition 获取系统时间 秒 * @version 1.0 */ public static int getSecond() { return second; } /** * @return java.lang.String * @author xiaobu * @date 2018/11/28 16:22 * @descprition 获取当前的年月日 yyyyMMdd * @version 1.0 */ public static String getDate() { SimpleDateFormat format = new SimpleDateFormat(PATTERN); return format.format(System.currentTimeMillis()); } /** * @param pattern 格式 * @return java.lang.String * @author xiaobu * @date 2018/11/28 16:17 * @descprition 获取当前时间的字符串时间 * @version 1.0 */ public static String getDateTime(String pattern) { SimpleDateFormat format = new SimpleDateFormat(pattern); return format.format(System.currentTimeMillis()); } /** * @author xiaobu * @date 2018/11/28 17:02 * @param pattern 日期格式 * @return java.lang.String * @descprition 将JDK8的日期格式化 * @version 1.0 */ public static String getLocalTime(String pattern){ DateTimeFormatter df = DateTimeFormatter.ofPattern(pattern); return df.format(LocalDateTime.now()); } /** * @param strdate 格式yyyymmdd * @return boolean * @author xiaobu * @date 2018/11/28 16:14 * @descprition 判断给定日期（是否在系统日期之前，是（或等于）：true，否：false * @version 1.0 */ public static boolean isBefore(String strdate) { Calendar cal = parseCalendar(strdate); assert cal != null; return cal.before(calendar); } /** * 功能描述：判断给定的两个日期的前后。strdate1在strdate2之前（或同一天），返回true，反之，false * * @param strdate1 日期1 * @param strdate2 日期2 * @return boolean */ public static boolean isBefore(String strdate1, String strdate2) { Calendar cal1 = parseCalendar(strdate1); Calendar cal2 = parseCalendar(strdate2); return cal1.before(cal2); } /** * 功能描述：计算在当前系统日期增加或减少 n 天后的日期 * * @param days 增加或减少的天数，正数增加，反之减少 * @date 2008-11-24 */ public static String addByDay(int days) { Calendar calendar1 = new GregorianCalendar(TimeZone .getDefault()); calendar1.add(Calendar.DATE, days); SimpleDateFormat format = new SimpleDateFormat(PATTERN); Date date = calendar1.getTime(); return format.format(date); } /** * 功能描述：计算在给定的日期加上或减去 n 天后的日期 * * @param datestr 给定的日期 * @param days 正数增加，反之减少 * @return String */ public static String addByDay(String datestr, int days) { Calendar cal = parseCalendar(datestr); assert cal != null; cal.add(Calendar.DATE, days); SimpleDateFormat format = new SimpleDateFormat(PATTERN); Date date = cal.getTime(); return format.format(date); } /** * 功能描述：计算在给定的日期加上或减去 n 天后的日期 * @param datestr 给定的日期 * @param days 正数增加，反之减少 格式 yyyyMMdd/yyyy-MM-dd * @return String */ public static String addByDay(String datestr, int days, String pattern) { Calendar cal = parseCalendar(datestr); assert cal != null; cal.add(Calendar.DATE, days); SimpleDateFormat format = new SimpleDateFormat(pattern); Date date = cal.getTime(); return format.format(date); } public static String addBySecond(String datestr, int seconds, String pattern) { Calendar cal = parseCalendar(datestr); assert cal != null; cal.add(Calendar.SECOND, seconds); SimpleDateFormat format = new SimpleDateFormat(pattern); Date date = cal.getTime(); return format.format(date); } /** * 功能描述：获得给定日期与系统当前日期之间的天数 * @param strdate 给定的日期字符串 * @return long 天数 * @date 2008-11-21 */ public static long getDaysDiffSystem(String strdate,String pattern) { SimpleDateFormat simpleDateFormat = new SimpleDateFormat(pattern); Date date=null; try { date= simpleDateFormat.parse(strdate); } catch (ParseException e) { e.printStackTrace(); } assert date != null; long millis = date.getTime() - System.currentTimeMillis(); return millis / (24L * 60L * 60L * 1000L); } /** * 功能描述：获得给定日期与系统当前日期之间的月数，不记天数 * @param strdate 给定的日期字符串 * @return long 月数 * @date 2008-11-21 */ private static long getMonths(String strdate) { long months = getMonth() - Integer.parseInt(strdate.substring(4, 6)); long years = getYear() - Integer.parseInt(strdate.substring(0, 4)); if (!isBefore(strdate)) { months = -months; years = -years; } if (months >= 0) { return years * 12 + months; } else { return (years - 1) * 12 + months + 12; } } /** * 功能描述：获得给定日期与系统当前日期之间的月数和天数 * * @param strdate 给定的日期字符串 * @return long[] 下标0月数，1天数 * @date 2008-11-21 */ public static long[] getMonthsAndDays(String strdate) { long m = getMonths(strdate); int d = getDay() - Integer.parseInt(strdate.substring(6, 8)); String date = ""; if (!isBefore(strdate)) { d = -d; date = strdate; } else { date = getDate(); } while (d < 0) { m--; d += getDaysOfMonth(date); } long[] md = {m, d}; return md; } /** * @param strdate 字符串 * @return boolean * @author xiaobu * @date 2018/11/28 16:48 * @descprition 判断字符串是否可以转换为日期型 是：true，否：false * @version 1.0 */ public static boolean isDateStr(String strdate) { if (strdate.length() != 8) { return false; } String reg = "^(\\d{4})((0([1-9]{1}))|(1[012]))((0[1-9]{1})|([1-2]([0-9]{1}))|(3[0|1]))$"; if (Pattern.matches(reg, strdate)) { reg = null; return getDaysOfMonth(strdate) >= Integer.parseInt(strdate .substring(6, 8)); } else { return false; } } /** * @param strdate 预判断年 格式yyyymmdd 或 yyyy * @return boolean * @author xiaobu * @date 2018/11/28 16:47 * @descprition 判断是否是闰年（年限1000--9999）是：true，否：false * @version 1.0 */ public static boolean isLeapYear(String strdate) { int y = Integer.parseInt(strdate.substring(0, 4)); if (y <= 999) { return false; } if (y % 400 == 0 || (y % 4 == 0 && y % 100 != 0)) { return true; } else { return false; } } /** * @param strdate 日期 格式：yyyymmdd 或 yyyymm * @return int * @author xiaobu * @date 2018/11/28 16:46 * @descprition 获取某一月份的天数 * @version 1.0 */ public static int getDaysOfMonth(String strdate) { int m = Integer.parseInt(strdate.substring(4, 6)); switch (m) { case 1: case 3: case 5: case 7: case 8: case 10: case 12: return 31; case 4: case 6: case 9: case 11: return 30; case 2: if (isLeapYear(strdate)) { return 29; } else { return 28; } default: return 0; } } /** * @param strdate 字符串日期 格式 yyyyMMdd * @return java.util.Calendar * @author xiaobu * @date 2018/11/28 16:07 * @descprition 把字符串日期转Calendar 对象 * @version 1.0 */ public static Calendar parseCalendar(String strdate) { if (isDateStr(strdate)) { int year = Integer.parseInt(strdate.substring(0, 4)); int month = Integer.parseInt(strdate.substring(4, 6)) - 1; int day = Integer.parseInt(strdate.substring(6, 8)); return new GregorianCalendar(year, month, day); } else { return null; } } /** * @param strdate 传入的字符串日期, pattern 格式 * @return java.util.Date * @author xiaobu * @date 2018/11/28 16:05 * @descprition 将字符串转换为Date型日期 日期格式yyyymmdd * @version 1.0 */ public static Date parseDate(String strdate, String pattern) { SimpleDateFormat format = new SimpleDateFormat(pattern); Date d = null; try { d = format.parse(strdate); } catch (Exception pe) { pe.printStackTrace(); } return d; } /** * @param begin 开始日期, end 结束日期, betweenValue 中间值, DateFormat 日期格式, boundaryValue 是否包含边界值 * @return boolean * @author xiaobu * @date 2018/11/28 16:04 * @descprition 判断某个值是否处于两个日期之间 * @version 1.0 */ public static boolean isBetween(String begin, String end, String betweenValue, String DateFormat, boolean boundaryValue) { boolean flag = false; SimpleDateFormat dateFormat = new SimpleDateFormat(DateFormat); try { Date beginDate = dateFormat.parse(begin); Date endDate = dateFormat.parse(end); Date betweenDate = dateFormat.parse(betweenValue); if (betweenDate.after(beginDate) && betweenDate.before(endDate)) { flag = true; } if (boundaryValue) { if (betweenDate.compareTo(beginDate) == 0) { flag = true; } if (betweenDate.compareTo(endDate) == 0) { flag = true; } } } catch (ParseException e) { e.printStackTrace(); } return flag; } /** * @param tempdate yyyyMMdd, days, format 自定义 * @return java.lang.String * @author xiaobu * @date 2018/11/28 15:51 * @descprition * @version 1.0 */ public static String addDay(String tempdate, int days, String format) { int year = Integer.parseInt(tempdate.substring(0, 4)); int month = 0; int day = 0; String sMonth = tempdate.substring(4, 6); String sDay = tempdate.substring(6, 8); if ("0".equals(sMonth.substring(0, 1))) { month = Integer.parseInt(tempdate.substring(5, 6)); } else { month = Integer.parseInt(tempdate.substring(4, 6)); } if ("0".equals(sDay.substring(0, 1))) { day = Integer.parseInt(tempdate.substring(7, 8)); } else { day = Integer.parseInt(tempdate.substring(6, 8)); } GregorianCalendar firstFlight = new GregorianCalendar(year, month - 1, day); DateFormat df = new SimpleDateFormat(format); Date date = firstFlight.getTime(); Calendar cal = Calendar.getInstance(); cal.setTime(date); cal.add(Calendar.DAY_OF_MONTH, days); return df.format(cal.getTime()); } /** * @param begin, end, format] * @return long * @author xiaobu * @date 2018/11/28 15:35 * @descprition 如果结束日期小余开始日期返回-1 相等返回0否则返回两个日期之间的天数 * @version 1.0 */ public static long getDays(String begin, String end, String format) { long datanumber = 0; SimpleDateFormat df = new SimpleDateFormat(format); long lEnd; long lBegin; try { lEnd = df.parse(end).getTime(); lBegin = df.parse(begin).getTime(); long temp = lEnd - lBegin; datanumber = temp / (1000L * 60L * 60L * 24L); } catch (ParseException e) { e.printStackTrace(); } if (datanumber < 0) { datanumber = -1; } return datanumber; } /** * @author xiaobu * @date 2018/11/28 16:54 * @param begin, end, format * @return boolean * @descprition 判断end是不是在begin之后.是返回true不是返回false * @version 1.0 */ public static boolean isAfter(String begin, String end, String format) { boolean flag = false; SimpleDateFormat dateFormat = new SimpleDateFormat(format); try { Date beginDate = dateFormat.parse(begin); Date endDate = dateFormat.parse(end); flag = endDate.after(beginDate); } catch (ParseException e) { e.printStackTrace(); } return flag; } /** * @author xiaobu * @date 2018/11/28 16:53 * @param begin 日期, end 日期, format 格式] * @return int * @descprition begin > end 返回 -1，begin = end 返回 0，begin < end 返回 1. * @version 1.0 */ public static int compareTo(String begin, String end, String format) { SimpleDateFormat dateFormat = new SimpleDateFormat(format); int flag = 0; try { Date beginDate = dateFormat.parse(begin); Date endDate = dateFormat.parse(end); flag = endDate.compareTo(beginDate); } catch (ParseException e) { e.printStackTrace(); } return flag; } /** * @author xiaobu * @date 2018/11/28 16:52 * @param year String yyyy * @return java.lang.String * @descprition 获得一年的天数 * @version 1.0 */ public static String getDaysOfYear(String year) { if (isLeapYear(year)) { return "366"; } else { return "365"; } } /** * 验证日期格式是否符合xxxx-xx-xx这种格式（只验证格式，不验证日期是否正确） * * @param date 日期字符串 * @return 符合：true 不符合：false */ public static boolean testDate(String date) { boolean isDate = false; Matcher matcher = PATTERN_.matcher(date); isDate = matcher.matches(); return isDate; } /** * @param begin1, end1, format * @return int * @author xiaobu * @date 2018/11/28 15:42 * @descprition 获取两个日期相隔的月数 用Calendar操作的 * @version 1.0 */ public static int getMonth(String begin1, String end1, String format) throws ParseException { SimpleDateFormat dateFormat = new SimpleDateFormat(format); Date s = dateFormat.parse(begin1); Date e = dateFormat.parse(end1); if (s.after(e)) { Date t = s; s = e; e = t; } Calendar start = Calendar.getInstance(); start.setTime(s); Calendar end = Calendar.getInstance(); end.setTime(e); Calendar temp = Calendar.getInstance(); temp.setTime(e); temp.add(Calendar.DATE, 1); int y = end.get(Calendar.YEAR) - start.get(Calendar.YEAR); int m = end.get(Calendar.MONTH) - start.get(Calendar.MONTH); if ((start.get(Calendar.DATE) == 1) && (temp.get(Calendar.DATE) == 1)) {// 前后都不破月 return y * 12 + m + 1; } else if ((start.get(Calendar.DATE) != 1) && (temp.get(Calendar.DATE) == 1)) {// 前破月后不破月 return y * 12 + m; } else if ((start.get(Calendar.DATE) == 1) && (temp.get(Calendar.DATE) != 1)) {// 前不破月后破月 return y * 12 + m; } else {// 前破月后破月 return (y * 12 + m - 1) < 0 ? 0 : (y * 12 + m - 1); } } /** * @param begin1 , end1, format * @return int * @author xiaobu * @date 2018/11/28 15:23 * @descprition 获取两个日期的相隔天数 * @version 1.0 */ public static int getDay(String begin1, String end1, String format) { SimpleDateFormat dateFormat = new SimpleDateFormat(format); Date startDate = null; Date endDate = null; try { startDate = dateFormat.parse(begin1); endDate = dateFormat.parse(end1); } catch (ParseException e) { e.printStackTrace(); } assert startDate != null; assert endDate != null; if (startDate.after(endDate)) { Date t = startDate; startDate = endDate; endDate = t; } return (int) ((getMillis(endDate) - getMillis(startDate)) / (24 * 3600 * 1000)); } public static long getMillis(Date date){ return date.getTime(); } /** * @param s Calendar.getInstance() * @return int * @author xiaobu * @date 2018/11/28 15:22 * @descprition 获取当前日期与月底相隔几天 * @version 1.0 */ public static int getDayP(Calendar s) { int d; if (s.get(Calendar.MONTH) == Calendar.FEBRUARY && s.get(Calendar.YEAR) % 4 == 0 && s.get(Calendar.YEAR) % 100 != 0) {// 闰年2月 d = 29; } else { Map m = new HashMap (); m.clear(); m.put(1, 31); m.put(3, 31); m.put(5, 31); m.put(7, 31); m.put(8, 31); m.put(10, 31); m.put(12, 31); m.put(4, 30); m.put(6, 30); m.put(9, 30); m.put(11, 30); m.put(2, 28); d = m.get(s.get(Calendar.MONTH) + 1); } return d - s.get(Calendar.DATE); } /** * @param begin 2018-11-28, end 2018-09-22 yyyy-MM-dd * @return int * @author xiaobu * @date 2018/11/28 15:13 * @descprition 根据传入的日期 计算两个日期相隔的月数 * @version 1.0 */ public static int getMonths(String begin, String end) { int iMonth = 0; int flag = 0; SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd"); try { Date date1 = dateFormat.parse(begin); Date date2 = dateFormat.parse(end); Calendar objCalendarDate1 = Calendar.getInstance(); objCalendarDate1.setTime(date1); Calendar objCalendarDate2 = Calendar.getInstance(); objCalendarDate2.setTime(date2); if (objCalendarDate2.equals(objCalendarDate1)) { return 0; } //比较下大小如果objCalendarDate1大于objCalendarDate2 则互换下 if (objCalendarDate1.after(objCalendarDate2)) { Calendar temp = objCalendarDate1; objCalendarDate1 = objCalendarDate2; objCalendarDate2 = temp; } if (objCalendarDate2.get(Calendar.DAY_OF_MONTH) < objCalendarDate1.get(Calendar.DAY_OF_MONTH)) { flag = 1; } if (objCalendarDate2.get(Calendar.DAY_OF_MONTH) == 30 && objCalendarDate1.get(Calendar.DAY_OF_MONTH) == 31 && objCalendarDate2.get(Calendar.YEAR) >= objCalendarDate1.get(Calendar.YEAR)) { flag = 0;// 草川禾 20110120 添加 处理特殊情况 此处是唯一一种 } // 即结束日期是30天，开始日期日31时计划日期[)情况 if (objCalendarDate2.get(Calendar.DAY_OF_MONTH) == 28 && objCalendarDate1.get(Calendar.DAY_OF_MONTH) == 31 && objCalendarDate2.get(Calendar.YEAR) >= objCalendarDate1.get(Calendar.YEAR)) { flag = 0;// 草川禾 20110120 添加 处理特殊情况 此处是唯一一种 } // 即结束日期是30天，开始日期日31时计划日期[)情况 if (objCalendarDate2.get(Calendar.DAY_OF_MONTH) == 28 && objCalendarDate1.get(Calendar.DAY_OF_MONTH) == 29 && objCalendarDate2.get(Calendar.YEAR) >= objCalendarDate1.get(Calendar.YEAR)) { flag = 0;// 处理getMonthsAndDays("20120229", "20130228")这种情况 } if (objCalendarDate2.get(Calendar.DAY_OF_MONTH) == 29 && objCalendarDate1.get(Calendar.DAY_OF_MONTH) == 31 && objCalendarDate2.get(Calendar.YEAR) >= objCalendarDate1.get(Calendar.YEAR)) { flag = 0;// 草川禾 20110120 添加 处理特殊情况 此处是唯一一种 } // 即结束日期是30天，开始日期日31时计划日期[)情况 if (objCalendarDate2.get(Calendar.YEAR) > objCalendarDate1.get(Calendar.YEAR)) { iMonth = ((objCalendarDate2.get(Calendar.YEAR) - objCalendarDate1.get(Calendar.YEAR)) * 12 + objCalendarDate2.get(Calendar.MONTH) - flag) - objCalendarDate1.get(Calendar.MONTH); } else { iMonth = objCalendarDate2.get(Calendar.MONTH) - objCalendarDate1.get(Calendar.MONTH) - flag; } } catch (Exception e) { e.printStackTrace(); } return iMonth; } /** * @param beginDate, format] * @return boolean * @author xiaobu * @date 2018/11/28 15:45 * @descprition 判断一个日期是否该月的月末 * @version 1.0 */ public static boolean isLastDayOfMonth(String beginDate, String format) { boolean result = false; try { SimpleDateFormat dateFormat = new SimpleDateFormat(format); Date date = dateFormat.parse(beginDate); Calendar calendar = Calendar.getInstance(); calendar.setTime(date); calendar.set(Calendar.DATE, (calendar.get(Calendar.DATE) + 1)); if (calendar.get(Calendar.DAY_OF_MONTH) == 1) { result = true; } } catch (ParseException e) { e.printStackTrace(); } return result; } /** * @param monStr 201812 * @return java.lang.String * @author xiaobu * @date 2018/11/28 14:48 * @descprition 获取下个月份 * @version 1.0 */ public static String getNextMon(String monStr) { String result = ""; int year = Integer.parseInt(monStr.substring(0, 4)); int mon = Integer.parseInt(monStr.substring(4)); mon++; if (mon == 13) { mon = 1; year++; } if (mon > 9) { result = year + "" + mon; } else { result = year + "0" + mon; } return result; } /** * @param monStr 201811 * @return java.lang.String * @author xiaobu * @date 2018/11/28 14:45 * @descprition 获取上个月份 * @version 1.0 */ public static String getPreMon(String monStr) { String result = ""; int year = Integer.parseInt(monStr.substring(0, 4)); int mon = Integer.parseInt(monStr.substring(4, 6)); mon--; if (mon == 0) { mon = 12; year--; } if (mon < 10) { result = year + "0" + mon; } else { result = year + "" + mon; } return result; } /** * @param type 查询类型1.日；2.旬；3.月；4.季;5.半年；6.年, dateStr 201811 * @return java.lang.String[] * @author xiaobu * @date 2018/11/28 14:44 * @descprition * @version 1.0 */ public static String[] getDateArray(String type, String dateStr) { if (dateStr.length() == 6) { dateStr += "01"; } String[] dateArray = new String[2]; String yearStr = dateStr.substring(0, 4); String monthStr = dateStr.substring(4, 6); String dayStr = dateStr.substring(6, 8); if ("1".equals(type)) {//日 dateArray[0] = dateStr; dateArray[1] = dateStr; } if ("2".equals(type)) {//计算旬 int d = Integer.parseInt(dayStr); if (d >= 1 && d <= 10) { dateArray[0] = yearStr + monthStr + "01"; dateArray[1] = yearStr + monthStr + "10"; } else if (d >= 11 && d <= 20) { dateArray[0] = yearStr + monthStr + "11"; dateArray[1] = yearStr + monthStr + "20"; } else { dateArray[0] = yearStr + monthStr + "21"; int y = Integer.parseInt(yearStr); if (Integer.parseInt(monthStr) == 12) {//如果本月加1等于12月则需推到下一年 y = y + 1; monthStr = "01"; } else { int monVal = Integer.parseInt(monthStr); monVal++; if (monVal > 9) { monthStr = String.valueOf(monVal); } else { monthStr = "0" + monVal; } } String s = String.valueOf(y) + monthStr + "01"; String ss = addByDay(s, -1);//下月第一天减去一天为本月一号 dateArray[1] = ss; } } if ("3".equals(type)) {//月 int y = Integer.parseInt(yearStr); dateArray[0] = yearStr + monthStr + "01"; if (Integer.parseInt(monthStr) == 12) {//如果本月加1等于12月则需推到下一年 y = y + 1; monthStr = "01"; } else { monthStr = String.valueOf(Integer.parseInt(monthStr) + 1); if (Integer.parseInt(monthStr) < 10) { monthStr = "0" + monthStr; } } String s = String.valueOf(y) + monthStr + "01"; String ss = addByDay(s, -1);//下月第一天减去一天为本月一号 dateArray[1] = ss; } //季 if ("4".equals(type)) { int m = Integer.parseInt(monthStr); if (m >= 1 && m <= 3) { dateArray[0] = yearStr + "01" + "01"; dateArray[1] = yearStr + "03" + "31"; } else if (m >= 4 && m <= 6) { dateArray[0] = yearStr + "04" + "01"; dateArray[1] = yearStr + "06" + "30"; } else if (m >= 7 && m <= 9) { dateArray[0] = yearStr + "07" + "01"; dateArray[1] = yearStr + "09" + "30"; } else if (m >= 10 && m <= 12) { dateArray[0] = yearStr + "10" + "01"; dateArray[1] = yearStr + "12" + "31"; } } //半年 if ("5".equals(type)) { int m = Integer.parseInt(monthStr); if (m >= 1 && m <= 6) { dateArray[0] = yearStr + "01" + "01"; dateArray[1] = yearStr + "06" + "30"; } else if (m >= 7 && m <= 12) { dateArray[0] = yearStr + "07" + "01"; dateArray[1] = yearStr + "12" + "31"; } } //年 if ("6".equals(type)) { dateArray[0] = yearStr + "01" + "01"; dateArray[1] = yearStr + "12" + "31"; } return dateArray; } /** * @author xiaobu * @date 2019/2/26 10:07 * @param unixTime , formats] * @return java.lang.String * @descprition 将10位unix时间戳(精确度为秒)转时间字符串 * @version 1.0 */ public static String unixtime2date(long unixTime, String formats){ long timestamp =unixTime*1000; return timestamp2date(timestamp,formats); } /** * @author xiaobu * @date 2019/2/26 10:08 * @param timestamp , formats] * @return java.lang.String * @descprition 将13位的时间戳(精确度为毫秒)转时间字符串 * @version 1.0 */ public static String timestamp2date(long timestamp, String formats){ return new SimpleDateFormat(formats).format(new Date(timestamp)); } /** * @author xiaobu * @date 2019/2/26 10:24 * @param strDate, formats] * @return long * @descprition 时间字符串转时间戳 * @version 1.0 */ public long strdate2timestamp(String strDate, String formats){ try { return new SimpleDateFormat(formats).parse(strDate).getTime(); } catch (ParseException e) { e.printStackTrace(); } return 0; } /** * @author xiaobu * @date 2019/2/26 10:24 * @param strDate , formats] * @return long * @descprition 时间字符串转unix时间戳 * @version 1.0 */ public long strdate2unixtime(String strDate, String formats){ long timeStamp = strdate2timestamp(strDate, formats); return timeStamp!=0 ? (timeStamp/1000) : 0; }}
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