java 时间工具类

import java.sql.Timestamp; import java.text.DateFormat; import java.text.ParseException; import java.text.SimpleDateFormat; import java.time.LocalDate; import java.time.temporal.ChronoUnit; import java.util.*; public class DateUtil { public static final String DAFAULT_DATE_FORMAT = "yyyy-M-d"; public static final String DATE_FORMAT = "yyyy-MM-dd"; public static final String DAFAULT_DATETIME_FORMAT = "yyyy-M-d HH:mm:ss"; public static final String DATETIME_FORMAT = "yyyy-MM-dd HH:mm:ss"; public static final String DAFAULT_TIME_FORMAT = "HH:mm:ss"; public static final long DAFAULT_MS = 86400000; /** * 日期格式化1 */ public static String format(Calendar c, String pattern) { Calendar calendar; if (c != null) { calendar = c; } else { calendar = Calendar.getInstance(); } if (pattern == null || pattern.equals("")) { pattern = DATETIME_FORMAT; } SimpleDateFormat sdf = new SimpleDateFormat(pattern); return sdf.format(calendar.getTime()); } /** * 日期格式化2 */ public static String format(Date date, String pattern) { Date tempDate = null; if (date != null) { tempDate = date; } else { tempDate = Calendar.getInstance().getTime(); } if (pattern == null || pattern.equals("")) { pattern = DATETIME_FORMAT; } SimpleDateFormat sdf = new SimpleDateFormat(pattern); return sdf.format(tempDate); } /** * 日期格式化3 * * @param date 需要转化的时间对象 * @return 返回格式化字符串 * */ public static String getDataFormat(Date date, String... patterns) { if (patterns.length == 0) { SimpleDateFormat sdf = new SimpleDateFormat(DATETIME_FORMAT); return sdf.format(date); } else { SimpleDateFormat sdf = new SimpleDateFormat(patterns[0]); return sdf.format(date); } } /** * 把格式化日期字符串 转换成 日期对象 * * @param date 日期字符串 * @param patterns 要转换的格式 * @return 返回日期对象 * @throws ParseException 异常 */ public static Date getParseDate(String date, String... patterns) throws ParseException { if (patterns.length == 0) { SimpleDateFormat sdf = new SimpleDateFormat(DATETIME_FORMAT); return sdf.parse(date); } else { SimpleDateFormat sdf = new SimpleDateFormat(patterns[0]); return sdf.parse(date); } } /** * 获取上一个时间跨度的时间点 * * @param date 时间点 * @param dayNum 时间跨度的天数 * @return 格式化时间 */ public static Date getLastDateSpan(Date date, int dayNum) { long dateMsLong = date.getTime() - (dayNum * DAFAULT_MS); return new Date(dateMsLong); } /** * 获取上一个时间跨度的时间点 * * @param date 时间点 * @param dayNum 时间跨度的天数 * @return 格式化时间 */ public static Date getNextDateSpan(Date date, int dayNum) { SimpleDateFormat sdf = new SimpleDateFormat(DATETIME_FORMAT); long dateMsLong = date.getTime() + dayNum * 1000 * 60 * 60; return new Date(dateMsLong); } /** * 判断时间前后 * * @param date1 时间点1 * @param date2 时间点2 * @return 返回boolean类型 */ public static boolean judgeDate(Date date1, Date date2) { return date1.getTime() > date2.getTime(); } /** * 获取两个日期字符串之间的日期集合 * * @param startTime:String * @param endTime:String * @return list:yyyy-MM-dd */ public static List<String> getBetweenDate(String startTime, String endTime) { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); // 声明保存日期集合 List<String> list = new ArrayList<String>(); try { // 转化成日期类型 Date startDate = sdf.parse(startTime); Date endDate = sdf.parse(endTime); //用Calendar 进行日期比较判断 Calendar calendar = Calendar.getInstance(); while (startDate.getTime() <= endDate.getTime()) { // 把日期添加到集合 list.add(sdf.format(startDate)); // 设置日期 calendar.setTime(startDate); //把日期增加一天 calendar.add(Calendar.DATE, 1); // 获取增加后的日期 startDate = calendar.getTime(); } } catch (ParseException e) { e.printStackTrace(); } return list; } /** * 获取两个日期字符串之间的日期集合 * * @param startTime:String * @param endTime:String * @return list:yyyy-MM-dd hh:mm:ss */ public static List<String> getBetweenDatess(String startTime, String endTime) { SimpleDateFormat sdf = new SimpleDateFormat(DATETIME_FORMAT); // 声明保存日期集合 List<String> list = new ArrayList<String>(); try { // 转化成日期类型 Date startDate = sdf.parse(startTime); Date endDate = sdf.parse(endTime); //用Calendar 进行日期比较判断 Calendar calendar = Calendar.getInstance(); while (startDate.getTime() <= endDate.getTime()) { // 把日期添加到集合 list.add(sdf.format(startDate)); // 设置日期 calendar.setTime(startDate); //把日期增加一天 calendar.add(Calendar.DATE, 1); // 获取增加后的日期 startDate = calendar.getTime(); } } catch (ParseException e) { e.printStackTrace(); } return list; } /** * 获取两个日期字符串之间的日期集合 * * @param startTime:String * @param endTime:String * @return list:yyyy-MM-dd hh:mm:ss */ public static List<String> getBetween(String startTime, String endTime) { SimpleDateFormat sdf = new SimpleDateFormat(DATETIME_FORMAT); // 声明保存日期集合 List<String> list = new ArrayList<String>(); try { // 转化成日期类型 Date startDate = sdf.parse(startTime); Date endDate = sdf.parse(endTime); //用Calendar 进行日期比较判断 Calendar calendar = Calendar.getInstance(); while (startDate.getTime() <= endDate.getTime()) { // 把日期添加到集合 list.add(sdf.format(startDate)); // 设置日期 calendar.setTime(startDate); //把日期增加一天 calendar.add(Calendar.DATE, 1); // 获取增加后的日期 startDate = calendar.getTime(); } list.add(sdf.format(endDate)); } catch (ParseException e) { e.printStackTrace(); } return list; } /** * 获取两个日期字符串之间的日期集合 * * @param startTime:String * @param endTime:String * @return list:yyyy-MM-dd */ public static List<String> getHourDate(String startTime, String endTime) { SimpleDateFormat sdf = new SimpleDateFormat(DATETIME_FORMAT); // 声明保存日期集合 List<String> list = new ArrayList<String>(); try { // 转化成日期类型 Date startDate = sdf.parse(startTime); Date endDate = sdf.parse(endTime); //用Calendar 进行日期比较判断 Calendar calendar = Calendar.getInstance(); while (startDate.getTime() <= endDate.getTime()) { // 把日期添加到集合 list.add(sdf.format(startDate)); // 设置日期 calendar.setTime(startDate); calendar.add(Calendar.HOUR, +1); // 获取增加后的日期 startDate = calendar.getTime(); } list.add(sdf.format(endDate)); } catch (ParseException e) { e.printStackTrace(); } return list; } /** * 获取两个日期字符串之间的小时集合 * * @param startTime:String --> 2019-11-12 00:00:00 * @param endTime:String --> 2019-11-12 23:59:59 * @return list:yyyy-MM-dd HH --> 2019-11-12 00 ---- 2019-11-12 23 */ public static List<String> getHourDate2(String startTime, String endTime) { SimpleDateFormat sdf = new SimpleDateFormat(DATETIME_FORMAT); SimpleDateFormat sdf2 = new SimpleDateFormat("yyyy-MM-dd HH"); // 声明保存日期集合 List<String> list = new ArrayList<String>(); try { // 转化成日期类型 Date startDate = sdf.parse(startTime); Date endDate = sdf.parse(endTime); //用Calendar 进行日期比较判断 Calendar calendar = Calendar.getInstance(); while (startDate.getTime() <= endDate.getTime()) { // 把日期添加到集合 list.add(sdf2.format(startDate)); // 设置日期 calendar.setTime(startDate); calendar.add(Calendar.HOUR, +1); // 获取增加后的日期 startDate = calendar.getTime(); } } catch (ParseException e) { e.printStackTrace(); } return list; } /** * 计算日期{@code startDate}与{@code endDate}的间隔天数 * * @param startDate * @param endDate * @return 间隔天数 */ static long until(LocalDate startDate, LocalDate endDate) { return startDate.until(endDate, ChronoUnit.DAYS); } /** * 获取 最近24小时的 开始与结束时间点 * * @return List<String> */ public static List<String> getLast24HourDate() { List<String> Last24Hour = new ArrayList<>(); Date nowDate = new Date(); Last24Hour.add(getDataFormat(nowDate, DATETIME_FORMAT)); Date lastDayDate = new Date(nowDate.getTime() - DAFAULT_MS); Last24Hour.add(getDataFormat(lastDayDate, DATETIME_FORMAT)); return Last24Hour; } public static List<String> getLast24HourDate2(Date nowDate) { List<String> Last24Hour = new ArrayList<>(); // Date nowDate= new Date(); Last24Hour.add(getDataFormat(nowDate, DATETIME_FORMAT)); Date lastDayDate = new Date(nowDate.getTime() - DAFAULT_MS); Last24Hour.add(getDataFormat(lastDayDate, DATETIME_FORMAT)); return Last24Hour; } /** * 获取昨天一天的开始时间和结束时间 * * @return List<String> */ public static List<String> getLastDay24Hour() { List<String> Last24Hour = new ArrayList<>(); Date lastDate = new Date(System.currentTimeMillis() - DAFAULT_MS); Last24Hour.add(getDataFormat(lastDate, "yyyy-MM-dd") + " 00:00:00"); Last24Hour.add(getDataFormat(lastDate, "yyyy-MM-dd") + " 23:59:59"); return Last24Hour; } /** * 获取某一天的开始时间和结束时间 * * @return List<String> */ public static List<String> getLastDay24Hour(int num) { List<String> Last24Hour = new ArrayList<>(); Date lastDate = new Date(System.currentTimeMillis() - DAFAULT_MS * num); Last24Hour.add(getDataFormat(lastDate, "yyyy-MM-dd") + " 00:00:00"); Last24Hour.add(getDataFormat(lastDate, "yyyy-MM-dd") + " 23:59:59"); return Last24Hour; } /** * 获取前7天时间点 * * @return List<String> */ public static List<String> getLastWeek() { List<String> Last24Hour = new ArrayList<>(); Date lastDate = new Date(System.currentTimeMillis() - DAFAULT_MS); Date LastWeek = new Date(lastDate.getTime() - DAFAULT_MS * 7); Last24Hour.add(getDataFormat(lastDate, "yyyy-MM-dd") + " 00:00:00"); Last24Hour.add(getDataFormat(LastWeek, "yyyy-MM-dd") + " 23:59:59"); return Last24Hour; } /** * 获取前一天 的某小时 事件段 * @param drillDown DrillDown * @return List<String> */ // public static List<String> getLastDay24Hour_hourToMinutes(DrillDown drillDown){ // List<String> Last24Hour = new ArrayList<>(); // Date nowDate = new Date(); // String hour = drillDown.getDate(); // Date lastDate = new Date(nowDate.getTime()-1000*60*60*24); Date lastDate = new Date(nowDate.getTime()); // Last24Hour.add(getDataFormat(lastDate,"yyyy-MM-dd")+" "+hour+":00:00"); // Last24Hour.add(getDataFormat(lastDate,"yyyy-MM-dd")+" "+hour+":59:59"); // return Last24Hour; // } // public static List<String> getLastDay24Hour_hourToDetails(DrillDown drillDown){ // List<String> Last24Hour = new ArrayList<>(); // Date nowDate = new Date(); // String hour = drillDown.getDate(); // Date lastDate = new Date(nowDate.getTime()-1000*60*60*24); Date lastDate = new Date(nowDate.getTime()); // Last24Hour.add(getDataFormat(lastDate,"yyyy-MM-dd")+" "+hour); // return Last24Hour; // } // // public static List<String> getLastDay24Hour_hourToSeconds(DrillDown drillDown){ // List<String> Last24Hour = new ArrayList<>(); // Date nowDate = new Date(); // String hour = drillDown.getDate(); // Date lastDate = new Date(nowDate.getTime()-1000*60*60*24); Date lastDate = new Date(nowDate.getTime()); // Last24Hour.add(getDataFormat(lastDate,"yyyy-MM-dd")+" "+hour+":00"); // Last24Hour.add(getDataFormat(lastDate,"yyyy-MM-dd")+" "+hour+":59"); // return Last24Hour; // } /** * 获取 最近7天的 开始与结束时间点 * * @return List<String> */ public static List<String> getLast7DayDate() { List<String> Last7Day = new ArrayList<>(); Date nowDate = new Date(); Last7Day.add(getDataFormat(nowDate, DATETIME_FORMAT)); Date lastDayDate = new Date(nowDate.getTime() - DAFAULT_MS * 7); Last7Day.add(getDataFormat(lastDayDate, DATETIME_FORMAT)); return Last7Day; } /** * 上周一的时间 * * @param date * @return */ public static Date geLastWeekMonday(Date date) { Calendar cal = Calendar.getInstance(); cal.setTime(getThisWeekMonday(date)); cal.add(Calendar.DATE, -7); return cal.getTime(); } /*** * 本周 * @param date * @return */ public static Date getThisWeekMonday(Date date) { Calendar cal = Calendar.getInstance(); cal.setTime(date); // 获得当前日期是一个星期的第几天 int dayWeek = cal.get(Calendar.DAY_OF_WEEK); if (1 == dayWeek) { cal.add(Calendar.DAY_OF_MONTH, -1); } // 设置一个星期的第一天，按中国的习惯一个星期的第一天是星期一 cal.setFirstDayOfWeek(Calendar.MONDAY); // 获得当前日期是一个星期的第几天 int day = cal.get(Calendar.DAY_OF_WEEK); // 根据日历的规则，给当前日期减去星期几与一个星期第一天的差值 cal.add(Calendar.DATE, cal.getFirstDayOfWeek() - day); return cal.getTime(); } /** * 下周 * * @param date * @return */ public static Date getNextWeekMonday(Date date) { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); Calendar cal = Calendar.getInstance(); cal.setTime(getThisWeekMonday(date)); cal.add(Calendar.DATE, 7); return cal.getTime(); } /** * 获取 某天前的日期 * * @param days int * @return string */ public static String getLast7DayDate2(int days) { Calendar calendar = Calendar.getInstance(); calendar.set(Calendar.DAY_OF_YEAR, calendar.get(Calendar.DAY_OF_YEAR) - days); Date today = calendar.getTime(); SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd"); return format.format(today); } //获取今天、明天、后天的具体月、日，以当前系统日期为主： public static String returnDate(int count) { Calendar strDate = Calendar.getInstance(); strDate.add(strDate.DATE, count); SimpleDateFormat sdf = new SimpleDateFormat("MM-dd"); return sdf.format(strDate.getTime()); } // 获得下周星期一的日期 public static String getNextMonday(int count) { Calendar strDate = Calendar.getInstance(); int day = getDay(strDate); strDate.add(Calendar.DATE, -(day - 2)); strDate.add(Calendar.WEEK_OF_YEAR, count); return format(strDate, "yyyy-MM-dd"); } // 获得下周星期日的日期 public static String getNextSunday(int count) { Calendar strDate = Calendar.getInstance(); int day = getDay(strDate); strDate.add(Calendar.DATE, 8 - day); strDate.add(Calendar.WEEK_OF_YEAR, count); return format(strDate, "yyyy-MM-dd"); } // 获得下月第一天 public static String getNextMonthFirst(int count) { Calendar strDate = Calendar.getInstance(); int day = getDate(strDate); strDate.add(Calendar.DATE, -(day - 1)); strDate.add(Calendar.MONTH, count); return format(strDate, "yyyy-MM-dd"); } // 获得下月最后一天 public static String getNextMonthEnd(int count) { Calendar strDate = Calendar.getInstance(); int day = getDate(strDate); strDate.add(Calendar.DATE, -day); strDate.add(Calendar.MONTH, count + 1); return format(strDate, "yyyy-MM-dd"); } public static Date getLastDay(int days) { Calendar c = Calendar.getInstance(); c.add(Calendar.DAY_OF_MONTH, -days); return c.getTime(); } public static Date getLastMonth(int days) { Calendar c = Calendar.getInstance(); c.add(Calendar.MONTH, -days); return c.getTime(); } private static List<String> getLastMonthList() { Calendar begin = Calendar.getInstance(); // 得到一个Calendar的实例 begin.setTime(new Date(new Date().getTime() - DAFAULT_MS)); // 设置时间为当前时间 begin.add(Calendar.MONTH, -1); // 月份减1 begin.add(Calendar.DATE, +1); // 日期加0/1 Date result = begin.getTime(); Calendar end = Calendar.getInstance(); Long startTime = begin.getTimeInMillis(); Long endTime = end.getTimeInMillis() - DAFAULT_MS; List dates = new ArrayList<>(); Long time = startTime; int i = 0; while (time <= endTime) { Date d = new Date(time); DateFormat df = new SimpleDateFormat("yyyy-MM-dd"); dates.add(i, df.format(d)); i++; time += DAFAULT_MS; } return dates; } public static List<String> getMonth(String quicklTime) { List<String> month = new ArrayList<>(); SimpleDateFormat sdf2 = new SimpleDateFormat("yyyy"); switch (quicklTime) { case "一月": month.add(sdf2.format(new Date()) + "-01-01 00:00:00"); month.add(sdf2.format(new Date()) + "-01-" + getDaysByYearMonth(Integer.valueOf(sdf2.format(new Date())), 1) + " 23:59:59"); break; case "二月": month.add(sdf2.format(new Date()) + "-02-01 00:00:00"); month.add(sdf2.format(new Date()) + "-02-" + getDaysByYearMonth(Integer.valueOf(sdf2.format(new Date())), 2) + " 23:59:59"); break; case "三月": month.add(sdf2.format(new Date()) + "-03-01 00:00:00"); month.add(sdf2.format(new Date()) + "-03-" + getDaysByYearMonth(Integer.valueOf(sdf2.format(new Date())), 1) + " 23:59:59"); break; case "四月": month.add(sdf2.format(new Date()) + "-04-01 00:00:00"); month.add(sdf2.format(new Date()) + "-04-" + getDaysByYearMonth(Integer.valueOf(sdf2.format(new Date())), 1) + " 23:59:59"); break; case "五月": month.add(sdf2.format(new Date()) + "-05-01 00:00:00"); month.add(sdf2.format(new Date()) + "-05-" + getDaysByYearMonth(Integer.valueOf(sdf2.format(new Date())), 1) + " 23:59:59"); break; case "六月": month.add(sdf2.format(new Date()) + "-06-01 00:00:00"); month.add(sdf2.format(new Date()) + "-06-" + getDaysByYearMonth(Integer.valueOf(sdf2.format(new Date())), 1) + " 23:59:59"); break; case "七月": month.add(sdf2.format(new Date()) + "-07-01 00:00:00"); month.add(sdf2.format(new Date()) + "-07-" + getDaysByYearMonth(Integer.valueOf(sdf2.format(new Date())), 1) + " 23:59:59"); break; case "八月": month.add(sdf2.format(new Date()) + "-08-01 00:00:00"); month.add(sdf2.format(new Date()) + "-08-" + getDaysByYearMonth(Integer.valueOf(sdf2.format(new Date())), 1) + " 23:59:59"); break; case "九月": month.add(sdf2.format(new Date()) + "-09-01 00:00:00"); month.add(sdf2.format(new Date()) + "-09-" + getDaysByYearMonth(Integer.valueOf(sdf2.format(new Date())), 1) + " 23:59:59"); break; case "十月": month.add(sdf2.format(new Date()) + "-10-01 00:00:00"); month.add(sdf2.format(new Date()) + "-10-" + getDaysByYearMonth(Integer.valueOf(sdf2.format(new Date())), 1) + " 23:59:59"); break; case "十一月": month.add(sdf2.format(new Date()) + "-11-01 00:00:00"); month.add(sdf2.format(new Date()) + "-11-" + getDaysByYearMonth(Integer.valueOf(sdf2.format(new Date())), 1) + " 23:59:59"); break; case "十二月": month.add(sdf2.format(new Date()) + "-12-01 00:00:00"); month.add(sdf2.format(new Date()) + "-12-" + getDaysByYearMonth(Integer.valueOf(sdf2.format(new Date())), 1) + " 23:59:59"); break; } return month; } /** * 根据年 月 获取对应的月份 天数 */ public static String getDaysByYearMonth(int year, int month) { Calendar a = Calendar.getInstance(); a.set(Calendar.YEAR, year); a.set(Calendar.MONTH, month - 1); a.set(Calendar.DATE, 1); a.roll(Calendar.DATE, -1); int maxDate = a.get(Calendar.DATE); return String.valueOf(maxDate); } /** * 当前时间 * * @return date */ public static Date currentDate() { return Calendar.getInstance().getTime(); } /** * 得到年 * * @param c * @return */ public static int getYear(Calendar c) { if (c != null) { return c.get(Calendar.YEAR); } else { return Calendar.getInstance().get(Calendar.YEAR); } } /** * 得到月份 * 注意，这里的月份依然是从0开始的 * * @param c * @return */ public static int getMonth(Calendar c) { if (c != null) { return c.get(Calendar.MONTH) + 1; } else { return Calendar.getInstance().get(Calendar.MONTH) + 1; } } /** * 得到日期 * * @param c * @return */ public static int getDate(Calendar c) { if (c != null) { return c.get(Calendar.DATE); } else { return Calendar.getInstance().get(Calendar.DATE); } } /** * 得到星期 * * @param c * @return */ public static int getDay(Calendar c) { if (c != null) { return c.get(Calendar.DAY_OF_WEEK); } else { return Calendar.getInstance().get(Calendar.DAY_OF_WEEK); } } /** * 得到小时 * * @param c * @return */ public static int getHour(Calendar c) { if (c != null) { return c.get(Calendar.HOUR_OF_DAY); } else { return Calendar.getInstance().get(Calendar.HOUR_OF_DAY); } } /** * 得到分钟 */ public static int getMinute(Calendar c) { if (c != null) { return c.get(Calendar.MINUTE); } else { return Calendar.getInstance().get(Calendar.MINUTE); } } /** * 得到秒 */ public static int getSecond(Calendar c) { if (c != null) { return c.get(Calendar.SECOND); } else { return Calendar.getInstance().get(Calendar.SECOND); } } /** * 得到指定或者当前时间前n天的Calendar */ public static Calendar beforeNDays(Calendar c, int n) { //偏移量，给定n天的毫秒数 long offset = n * DAFAULT_MS; Calendar calendar = null; if (c != null) { calendar = c; } else { calendar = Calendar.getInstance(); } calendar.setTimeInMillis(calendar.getTimeInMillis() - offset); return calendar; } /** * 得到指定或者当前时间后n天的Calendar */ public static Calendar afterNDays(Calendar c, int n) { //偏移量，给定n天的毫秒数 long offset = n * DAFAULT_MS; Calendar calendar = null; if (c != null) { calendar = c; } else { calendar = Calendar.getInstance(); } calendar.setTimeInMillis(calendar.getTimeInMillis() + offset); return calendar; } /** * 指定日期加月份 * @param date 指定日期 * @param addMonths 要加的月份数 * @return Date 计算后的日期 */ public static Date addMonths(Date date, int addMonths) { Calendar calendar = Calendar.getInstance(); calendar.setTime(date); calendar.add(Calendar.MONTH, addMonths); return calendar.getTime(); } /** * 当前日期加月份 * * @param addMonths 要加的月份数 * @return Date 计算后的日期 */ public static Date addMonths(int addMonths) { return addMonths(new Date(), addMonths); } /** * 指定日期加天 * * @param date 指定日期 * @param addDays 要加的天数 * @return Date 计算后的日期 */ public static Date addDays(Date date, int addDays) { Calendar calendar = Calendar.getInstance(); calendar.setTime(date); calendar.add(Calendar.DATE, addDays); return calendar.getTime(); } /** * 当前日期加天 * * @param addDays 要加的天数 * @return Date 计算后的日期 */ public static Date addDays(int addDays) { return addDays(new Date(), addDays); } /** * 指定日期加小时 * * @param date 指定日期 * @param addHours 要加的小时数 * @return Date 计算后的日期 */ public static Date addHours(Date date, int addHours) { Calendar calendar = Calendar.getInstance(); calendar.setTime(date); calendar.add(Calendar.HOUR, addHours); return calendar.getTime(); } /** * 当前日期加小时 * * @param addHours 要加的小时数 * @return Date 计算后的日期 */ public static Date addHours(int addHours) { return addHours(new Date(), addHours); } /** * 指定日期加分 * * @param date 指定日期 * @param addMinutes 要加的分数 * @return Date 计算后的日期 */ public static Date addMinutes(Date date, int addMinutes) { Calendar calendar = Calendar.getInstance(); calendar.setTime(date); calendar.add(Calendar.MINUTE, addMinutes); return calendar.getTime(); } /** * 当前日期加分 * * @param addMinutes 要加的分数 * @return Date 计算后的日期 */ public static Date addMinutes(int addMinutes) { return addMinutes(new Date(), addMinutes); } /** * 指定日期加秒 * * @param date 指定日期 * @param addSeconds 要加的秒数 * @return Date 计算后的日期 */ public static Date addSeconds(Date date, int addSeconds) { Calendar calendar = Calendar.getInstance(); calendar.setTime(date); calendar.add(Calendar.SECOND, addSeconds); return calendar.getTime(); } /** * 当前日期加秒 * * @param addSeconds 要加的秒数 * @return Date 计算后的日期 */ public static Date addSeconds(int addSeconds) { return addSeconds(new Date(), addSeconds); } /** * 昨天 * * @param c * @return */ public static Calendar yesterday(Calendar c) { long offset = 1 * DAFAULT_MS; Calendar calendar = null; if (c != null) { calendar = c; } else { calendar = Calendar.getInstance(); } calendar.setTimeInMillis(calendar.getTimeInMillis() - offset); return calendar; } /** * 明天 * * @param c * @return */ public static Calendar tomorrow(Calendar c) { long offset = 1 * DAFAULT_MS; Calendar calendar = null; if (c != null) { calendar = c; } else { calendar = Calendar.getInstance(); } calendar.setTimeInMillis(calendar.getTimeInMillis() + offset); return calendar; } /** * 得到指定或者当前时间前offset毫秒的Calendar * * @param c * @param offset * @return */ public static Calendar before(Calendar c, long offset) { Calendar calendar = null; if (c != null) { calendar = c; } else { calendar = Calendar.getInstance(); } calendar.setTimeInMillis(calendar.getTimeInMillis() - offset); return calendar; } /** * 得到指定或者当前时间前offset毫秒的Calendar */ public static Calendar after(Calendar c, long offset) { Calendar calendar = null; if (c != null) { calendar = c; } else { calendar = Calendar.getInstance(); } calendar.setTimeInMillis(calendar.getTimeInMillis() - offset); return calendar; } /** * 日期格式化 */ public static String format(Calendar c, String pattern) { Calendar calendar; if (c != null) { calendar = c; } else { calendar = Calendar.getInstance(); } if (pattern == null || pattern.equals("")) { pattern = DATETIME_FORMAT; } SimpleDateFormat sdf = new SimpleDateFormat(pattern); return sdf.format(calendar.getTime()); } /** * 日期格式化 */ public static String format(Date date, String pattern) { Date tempDate = null; if (date != null) { tempDate = date; } else { tempDate = Calendar.getInstance().getTime(); } if (pattern == null || pattern.equals("")) { pattern = DATETIME_FORMAT; } SimpleDateFormat sdf = new SimpleDateFormat(pattern); return sdf.format(tempDate); } /** * Date类型转换到Calendar类型 */ public static Calendar date2Calendar(Date d) { Calendar c = Calendar.getInstance(); c.setTime(d); return c; } /** * Calendar类型转换到Date类型 */ public static Date calendar2Date(Calendar c) { return c.getTime(); } /** * Date类型转换到Timestamp类型 */ public static Timestamp date2Timestamp(Date d) { return new Timestamp(d.getTime()); } /** * Calendar类型转换到Timestamp类型 */ public static Timestamp calendar2Timestamp(Calendar c) { return new Timestamp(c.getTimeInMillis()); } /** * Timestamp类型转换到Calendar类型 */ public static Calendar timestamp2Calendar(Timestamp ts) { Calendar c = Calendar.getInstance(); c.setTime(ts); return c; } /** * 得到当前时间的字符串表示 * 格式2020-02-02 12:12:12 */ public static String getTimeString() { return format(Calendar.getInstance(), DATETIME_FORMAT); } /** * 标准日期格式字符串解析成Calendar对象 */ public static Calendar pars2Calender(String s) { Timestamp ts = Timestamp.valueOf(s); return timestamp2Calendar(ts); } /** * 传入一个时间后获取减去指定分钟后的时间 */ public static String getLessMinute(String time, int Less) { DateFormat fmt = new SimpleDateFormat("yyyy-MM-dd HH:mm"); Date date = null; try { date = fmt.parse(time); date = addMinutes(date, Less); } catch (ParseException e) { e.printStackTrace(); } String endTime = fmt.format(date); return endTime; } }