java日期时间操作工具类
本文实例为大家分享了java日期时间操作工具类,供大家参考,具体内容如下
虽然jdk1.8开始,加入了time包,里面对时区,本地化时间,格式化,以及时间等做了很好的封装,但仍然要写一个工具类。大家看着用。应该没有bug。如果发现了,请您一定告知,互相学习!好了,上代码:
package com.wdy.tools.utils.timeutil; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; import java.util.GregorianCalendar; /** * TimeUtil 日期时间工具类 * @author wangdy */ public class TimeUtil { /** * 获取当前系统时间的小时(HH) * * @return int 当前系统小时HH格式 * @throws Exception */ public static int getHH() throws Exception { DateFormat df = new SimpleDateFormat("HH"); Date date = new Date(System.currentTimeMillis()); String str = df.format(date); return Integer.parseInt(str); } /** * 获取当前系统时间的分钟数(mm) * * @return int 当前系统分钟mm格式 * @throws Exception */ public static int getMM() throws Exception { DateFormat df = new SimpleDateFormat("mm"); Date date = new Date(System.currentTimeMillis()); String str = df.format(date); // return Integer.parseInt(str.split(":")[0]) * 4 + // Integer.parseInt(str.split(":")[1]) / 15; return Integer.parseInt(str); } /** * 获取当前系统时间的秒数(ss) * * @return int 当前系统时间的秒数(ss) * @throws Exception */ public static int getSS() throws Exception { DateFormat df = new SimpleDateFormat("ss"); Date date = new Date(System.currentTimeMillis()); String str = df.format(date); // return Integer.parseInt(str.split(":")[0]) * 4 + // Integer.parseInt(str.split(":")[1]) / 15; return Integer.parseInt(str); } /** * 获取输入日期的前后日期 * * @param date * 基准日期 yyyy-MM-dd * @param dayMark * +代表往后,-代表往前 * @return String 前后日期(yyyy-MM-dd) * @throws Exception */ public static String getOtherDay(String date, int dayMark) throws Exception { DateFormat df = new SimpleDateFormat("yyyy-MM-dd"); Date dt = df.parse(date); Calendar c = Calendar.getInstance(); c.setTime(dt); c.add(Calendar.DAY_OF_MONTH, dayMark); String mDateTime = df.format(c.getTime()); String strStart = mDateTime.substring(0, 10); return strStart; } /** * 获取日期所在周的第一天(周一) * * @param date基准日期yyyy * -MM-dd * @return String 周一(yyyy-MM-dd) * @throws Exception * * */ public static String getWeekFirstDate(String date) throws Exception { DateFormat df = new SimpleDateFormat("yyyy-MM-dd"); Date dt = df.parse(date); Calendar c = Calendar.getInstance(); c.setTime(dt); int days = c.get(Calendar.DAY_OF_WEEK); String strStart = ""; if (days == 1) { strStart = getOtherDay(date, -days - 5); } else { strStart = getOtherDay(date, -days + 2); } return strStart; } /** * 获取日期所在周的最后一天(周日) * * @param date基准日期yyyy * -MM-dd * @return String(yyyy-MM-dd) * @throws Exception * * */ public static String getWeekLastDate(String date) throws Exception { DateFormat df = new SimpleDateFormat("yyyy-MM-dd"); Date dt = df.parse(date); Calendar c = Calendar.getInstance(); c.setTime(dt); int days = c.get(Calendar.DAY_OF_WEEK); String strStart = ""; if (days == 1) { strStart = getOtherDay(date, 0); } else { strStart = getOtherDay(date, 8 - days); } return strStart; } /** * 获取日期所在周(年的周数)的前后周的周一 * * @param date基准日期yyyy * -MM-dd * @param weekMark找基准日期 * +代表往后,-代表往前 * @return String 前后周的周一(yyyy-MM-dd) * @throws Exception * * */ public static String getOtherWeekFirstDate(String date, int weekMark) throws Exception { String firstDate = getWeekFirstDate(date); DateFormat df = new SimpleDateFormat("yyyy-MM-dd"); Date dt = df.parse(firstDate); Calendar c = Calendar.getInstance(); c.setTime(dt); c.add(Calendar.WEEK_OF_YEAR, weekMark); String mDateTime = df.format(c.getTime()); String strStart = mDateTime.substring(0, 10); return strStart; } /** * 获取日期所在季的第一天 * * @param date基准日期yyyy * -MM-dd * @return String * @throws Exception * * */ public static String getSeasonFirstDate(String date) throws Exception { DateFormat df = new SimpleDateFormat("yyyy-MM-dd"); Date dt = df.parse(date); Calendar c = Calendar.getInstance(); c.setTime(dt); int year = c.get(Calendar.YEAR); int month = c.get(Calendar.MONTH); if (month < 3) { month = 0; } else if (month >= 3 && month < 6) { month = 3; } else if (month >= 6 && month < 9) { month = 6; } else if (month >= 9 && month < 12) { month = 9; } c.set(year, month, 1); String mDateTime = df.format(c.getTime()); String strStart = mDateTime.substring(0, 10); return strStart; } /** * 获取日期所在季的前后季度的第一天(xxxx-xx-01) * * @param date * 基准日期yyyy-MM-dd * @param seasonMark * 找基准日期+代表往后,-代表往前 * @return String * @throws Exception * * */ public static String getOtherSeasonFirstDate(String date, int seasonMark) throws Exception { String firstDate = getSeasonFirstDate(date); DateFormat df = new SimpleDateFormat("yyyy-MM-dd"); Date dt = df.parse(firstDate); Calendar c = Calendar.getInstance(); c.setTime(dt); int month = seasonMark * 3; if (month != 0) { c.add(Calendar.MONTH, month); } String mDateTime = df.format(c.getTime()); String strStart = mDateTime.substring(0, 10); return strStart; } /** * 获取日期所在月的第一天 date基准日期 * * @param date * yyyy-MM-dd * @return String (yyyy-MM) * @throws Exception * * */ public static String getMonthFirstDate(String date) throws Exception { DateFormat df = new SimpleDateFormat("yyyy-MM-dd"); Date dt = df.parse(date); Calendar c = Calendar.getInstance(); c.setTime(dt); int year = c.get(Calendar.YEAR); int month = c.get(Calendar.MONTH); c.set(year, month, 1); String mDateTime = df.format(c.getTime()); String strStart = mDateTime.substring(0, 10); return strStart; } /** * 获取日期所在月的最后一天 * * @param date基准日期yyyy * -MM-dd * @return String yyyy-MM-dd * @throws Exception * * */ public static String getMonthLastDate(String date) throws Exception { DateFormat df = new SimpleDateFormat("yyyy-MM-dd"); Date dt = df.parse(date); Calendar c = Calendar.getInstance(); c.setTime(dt); int year = c.get(Calendar.YEAR); int month = c.get(Calendar.MONTH); int dayNum = c.getActualMaximum(Calendar.DAY_OF_MONTH); c.set(year, month, dayNum); String mDateTime = df.format(c.getTime()); String strStart = mDateTime.substring(0, 10); return strStart; } /** * 获取日期所在月的前后月份的第一天(yyyy-MM-01) * * @param date基准日期yyyy * -MM-dd * @param monthMark找基准日期 * +代表往后,-代表往前 * @return String * @throws Exception * * */ public static String getOtherMonthFirstDate(String date, int monthMark) throws Exception { String firstDate = getMonthFirstDate(date); DateFormat df = new SimpleDateFormat("yyyy-MM-dd"); Date dt = df.parse(firstDate); Calendar c = Calendar.getInstance(); c.setTime(dt); c.add(Calendar.MONTH, monthMark); String mDateTime = df.format(c.getTime()); String strStart = mDateTime.substring(0, 10); return strStart; } /** * 获取日期所在年的第一天 * * @param date基准日期yyyy * -MM-dd * @return String * @throws Exception * * */ public static String getYearFirstDate(String date) throws Exception { DateFormat df = new SimpleDateFormat("yyyy-MM-dd"); Date dt = df.parse(date); Calendar c = Calendar.getInstance(); c.setTime(dt); int year = c.get(Calendar.YEAR); c.set(year, 0, 1); String mDateTime = df.format(c.getTime()); String strStart = mDateTime.substring(0, 10); return strStart; } /** * 获取日期所在年的前后年的第一天(yyyy-01-01) * * @param date * 基准日期yyyy-MM-dd * @param monthMark * 找基准日期+代表往后,-代表往前 * @return String * @throws Exception * * */ public static String getOtherYearFirstDate(String date, int yearMark) throws Exception { String firstDate = getMonthFirstDate(date); DateFormat df = new SimpleDateFormat("yyyy-MM-dd"); Date dt = df.parse(firstDate); Calendar c = Calendar.getInstance(); c.setTime(dt); c.add(Calendar.YEAR, yearMark); String mDateTime = df.format(c.getTime()); String strStart = mDateTime.substring(0, 4); return strStart + "-01-01"; } /** * 取得同期日期 年同期 * * @param date * yyyy-MM-dd * @param year * 年份 * @return 年同期日期yyyy-MM-dd * @throws Exception */ public static String getYearTqDay(String date, int year) throws Exception { DateFormat df = new SimpleDateFormat("yyyy-MM-dd"); Date dt = df.parse(date); Calendar c = Calendar.getInstance(); c.setTime(dt); c.add(Calendar.YEAR, year); String mDateTime = df.format(c.getTime()); return mDateTime; } /** * 取得同期日期 月同期 * * @param date * yyyy-MM-dd * @param month * 月份 * @return 月同期日期yyyy-MM-dd * @throws Exception */ public static String getMonthTqDay(String date, int month) throws Exception { DateFormat df = new SimpleDateFormat("yyyy-MM-dd"); Date dt = df.parse(date); Calendar c = Calendar.getInstance(); c.setTime(dt); c.add(Calendar.MONTH, month); String mDateTime = df.format(c.getTime()); return mDateTime; } /** * 取得同比月份 * * @param month * 月份 * @return 同比月份 * @throws Exception */ public static String getTbMonth(String month) throws Exception { DateFormat df = new SimpleDateFormat("yyyy-MM"); Date dt = df.parse(month); Calendar c = Calendar.getInstance(); c.setTime(dt); c.add(Calendar.YEAR, -1); String mDateTime = df.format(c.getTime()); return mDateTime; } /** * 取得环比月份 * * @param month * 月份 * @return 环比月份 * @throws Exception */ public static String getHbMonth(String month) throws Exception { DateFormat df = new SimpleDateFormat("yyyy-MM"); Date dt = df.parse(month); Calendar c = Calendar.getInstance(); c.setTime(dt); c.add(Calendar.MONTH, -1); String mDateTime = df.format(c.getTime()); return mDateTime; } /** * 获取两个日期之间的天数 * * @param sDate * -- 起始日期yyyy-MM-dd * @param eDate * -- 结束日期yyyy-MM-dd * @return int--天数 * @throws Exception * */ public static int getDaysOfTwoDate(String sDate, String eDate) throws Exception { DateFormat df1 = new SimpleDateFormat("yyyy-MM-dd"); DateFormat df2 = new SimpleDateFormat("yyyy-MM-dd"); Date date1 = df1.parse(sDate); Date date2 = df2.parse(eDate); if (null == date1 || null == date2) { return -1; } long intervalMilli = date2.getTime() - date1.getTime(); return (int) (intervalMilli / (24 * 60 * 60 * 1000)); } /** * 获取两个月份之间的月数 * * @param sDate * -- 起始月yyyy-MM * @param eDate * -- 结束月yyyy-MM * @return int--天数 * @throws Exception * */ public static int getMonthOfTwoMonth(String sDate, String eDate) throws Exception { DateFormat df = new SimpleDateFormat("yyyy-MM"); Date date1 = df.parse(sDate); Date date2 = df.parse(eDate); if (null == date1 || null == date2) { return -1; } Calendar c1 = Calendar.getInstance(); c1.setTime(date1); Calendar c2 = Calendar.getInstance(); c2.setTime(date2); int month1 = c1.get(Calendar.YEAR) * 12 + c1.get(Calendar.MONTH); int month2 = c2.get(Calendar.YEAR) * 12 + c2.get(Calendar.MONTH); return month2 - month1; } /**比较两个日期 * @param sDate 起始日期 * @param eDate 结束日期 * @param pattern 日期格式 * @return boolean 返回比较结果 * @throws Exception */ public static boolean compareDate(String sDate, String eDate, String pattern) throws Exception { DateFormat df1 = new SimpleDateFormat(pattern); Date date1 = df1.parse(sDate); Date date2 = df1.parse(eDate); if (null == date1 || null == date2) { return false; } long intervalMilli = date2.getTime() - date1.getTime(); if (intervalMilli > 0) { return true; } return false; } /**获取两个日期之间的分钟数 * @param sDate 起始日期 yyyy-MM-dd HH:mm:ss * @param eDate 结束日期 yyyy-MM-dd HH:mm:ss * @return int--分钟数 * @throws Exception */ public static int getMinsOfTwoDate(String sDate, String eDate) throws Exception { DateFormat df1 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); DateFormat df2 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Date date1 = df1.parse(sDate); Date date2 = df2.parse(eDate); if (null == date1 || null == date2) { return -1; } long intervalMilli = date2.getTime() - date1.getTime(); return (int) (intervalMilli / (60 * 1000)); } /** * 获取当前系统时间的字符串 * * @return String -- 当天的整个日期字符串,年月日时分秒,返回格式yyyy-MM-dd HH:mm:ss * @throws Exception * */ public static String getToDayAllStr() throws Exception { DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Date date = new Date(System.currentTimeMillis()); String str = df.format(date); return str; } /** * 获取当前系统日期的字符串 * * @return String-- 当天的年月日字符串,返回格式 yyyy-MM-dd * @throws Exception * */ public static String getToDayDateStr() throws Exception { DateFormat df = new SimpleDateFormat("yyyy-MM-dd"); Date date = new Date(System.currentTimeMillis()); String str = df.format(date); return str; } /** * 获取当前系统日期的字符串 * * @return String -- 当天的年月日字符串,返回格式 yyyyMMdd * */ public static String getToDayYmd() throws Exception { DateFormat df = new SimpleDateFormat("yyyyMMdd"); Date date = new Date(System.currentTimeMillis()); String str = df.format(date); return str; } /**获取当前系统时间的指定类型字符串 * @param pattern 指定的格式 * @return String-- 当天的指定类型的字符串 * @throws Exception */ public static String getToDayStrByPattern(String pattern) throws Exception { DateFormat df = new SimpleDateFormat(pattern); Date date = new Date(System.currentTimeMillis()); String str = df.format(date); return str; } /** * 获取当前系统时间的字符串 * * @return String 当天的时分秒字符串,返回格式HH:mm:ss * */ public static String getToDayHmsStr() throws Exception { DateFormat df = new SimpleDateFormat("HH:mm:ss"); Date date = new Date(System.currentTimeMillis()); String str = df.format(date); return str; } /** * 获取当前系统时间的字符串 * * @return String -- 当天的时分秒字符串,返回格式HHmmss * */ public static String getToDayHms() throws Exception { DateFormat df = new SimpleDateFormat("HHmmss"); Date date = new Date(System.currentTimeMillis()); String str = df.format(date); return str; } /**获取当前系统指定格式的时间的字符串 * @param pattern 指定格式 * @return String 当前系统指定格式时间字符串 * @throws Exception */ public static String getToDayHmsByPattern(String pattern) throws Exception { DateFormat df = new SimpleDateFormat(pattern); Date date = new Date(System.currentTimeMillis()); String str = df.format(date); return str; } /** * 获取指定日期的时刻字符串 * * @param dayStr * (yyyy-MM-dd HH:mm:ss) * @return String -- 当天的时分秒字符串,返回格式:HHmmss * */ public static String getHmsStrForDateTime(String dayStr) throws Exception { DateFormat df = new SimpleDateFormat("HHmmss"); DateFormat df2 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); String str = df.format(df2.parse(dayStr)); return str; } /** * 日期格式转换 oldPattern 转成 newPattern * * @param str 要转换格式的日期字符串 * @param oldPattern 原有格式 * @param newPattern 目标格式 * @return String转换格式化后的字符串 * @throws Exception */ public static String changeDateType(String str, String oldPattern, String newPattern) throws Exception { DateFormat df = new SimpleDateFormat(oldPattern); DateFormat df1 = new SimpleDateFormat(newPattern); return df1.format(df.parse(str)); } /** * 获取输入日期的前后几小时的日期时间 * * @param date基准日期yyyy-MM-dd HH:mm:ss * @param dayMark找基准日期 * +代表往后,-代表往前 * @return * @throws Exception * * */ public static String getOtherHour(String date, int dayMark) throws Exception { DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Date dt = df.parse(date); Calendar c = Calendar.getInstance(); c.setTime(dt); c.add(Calendar.HOUR_OF_DAY, dayMark); String mDateTime = df.format(c.getTime()); String strStart = mDateTime; return strStart; } /** * 获取前后分钟数 * * @param date yyyy-MM-dd HH:mm:ss * @param minuteMark 前后标识+-数值 * @return 返回 * @throws Exception */ public static String getOtherMinute(String date, int minuteMark) throws Exception { DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Date dt = df.parse(date); Calendar c = Calendar.getInstance(); c.setTime(dt); c.add(Calendar.MINUTE, minuteMark); String mDateTime = df.format(c.getTime()); String strStart = mDateTime; return strStart; } /** * 解析字符串为Date类型 * @param date 要被解析的日期字符串 * @param pattern 类型格式,默认yyyy-MM-dd HH:mm:ss * @return Date 被解析后的日期 * @throws Exception */ public static Date parseDate(String date, String pattern) throws Exception { Date returnDate = null; if (pattern == null || pattern.equals("") || pattern.equals("null")) { pattern = "yyyy-MM-dd HH:mm:ss"; } java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat(pattern); try { returnDate = sdf.parse(date); } catch (Exception e) { e.printStackTrace(); } return returnDate; } /** * 格式化Date类型日期 * @param date Date类型日期 * @param pattern 类型格式 * @return String,被格式化后的日期 * @throws Exception */ public static String formatDate(Date date, String pattern) throws Exception { String returnDate = null; if (date == null) { return ""; } if (pattern == null || pattern.equals("") || pattern.equals("null")) { pattern = "yyyy-MM-dd HH:mm:ss"; } java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat(pattern); returnDate = sdf.format(date); return returnDate; } /** * 得到当前月份yyyy-MM; * * @return String */ public static String getSystemMonth() { java.util.Date date = new java.util.Date(); SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM"); String mDateTime1 = formatter.format(date); return mDateTime1; } /** * 获取月所在年的最后一个月 * @param month 月份 * @param m * @return * @throws Exception */ public static String getYearLastMonth(String month, int m) throws Exception { SimpleDateFormat format = new SimpleDateFormat("yyyy-MM"); Date newDate = new Date(); newDate = format.parse(month); Calendar c = Calendar.getInstance(); c.setTime(newDate); c.add(Calendar.YEAR, m); newDate.setTime(c.getTimeInMillis()); return format.format(newDate).substring(0, 4) + "-12"; } /** * 获取前后月份 * + 往后推迟m月 * * @param month * @param m * @return * @throws Exception */ public static String getOtherMonth(String month, int m) throws Exception { SimpleDateFormat format = new SimpleDateFormat("yyyy-MM"); Date newDate = new Date(); newDate = format.parse(month); Calendar c = Calendar.getInstance(); c.setTime(newDate); c.add(Calendar.MONTH, m); newDate.setTime(c.getTimeInMillis()); return format.format(newDate); } /** * 获取前后月份+ 往后推迟m月 * * @param month * @param m * @return * @throws Exception */ public static String getOtherMonthYMD(String month, int m) throws Exception { SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd"); Date newDate = new Date(); newDate = format.parse(month); Calendar c = Calendar.getInstance(); c.setTime(newDate); c.add(Calendar.MONTH, m); newDate.setTime(c.getTimeInMillis()); return format.format(newDate); } /** * 根据年月字符串得到那个月的总天数 * @param monthStr yyyy-MM * @return int 总天数 * @throws Exception */ public static int getDaysOfMonth(String monthStr) throws Exception { SimpleDateFormat format = new SimpleDateFormat("yyyy-MM"); Date date = format.parse(monthStr); Calendar calendar = new GregorianCalendar(); calendar.setTime(date); int dayNum = calendar.getActualMaximum(Calendar.DAY_OF_MONTH); return dayNum; } /** * 获取指定时刻前后指定步长的时刻 * * @param time * 时刻HH:mm:ss * @param m * 步长(+-m) 0:输出原来的时刻,+1输出后一个时刻,-1输出前一个时刻 * @return String HH:mm:ss * @throws Exception */ public static String getBeforeAfterTimeForMin(String time, int m) throws Exception { Calendar now = Calendar.getInstance(); SimpleDateFormat format = new SimpleDateFormat("HH:mm:ss"); Date newDate = new Date(); newDate = format.parse(time); now.setTime(newDate); now.add(Calendar.MINUTE, m); return format.format(now.getTime()); } /** * 获取指定格式的前后时间 * * @param time * @param m * (0:输出原来的时刻,+1输出后一个时刻,-1输出前一个时刻) * @param pattern * 类型的格式必须被time的格式所包含 * @return * @throws Exception */ public static String getBeforeAfterDateTimeByTime(String time, int m, String pattern) throws Exception { Calendar now = Calendar.getInstance(); SimpleDateFormat sdf = new SimpleDateFormat(pattern); Date newDate = new Date(); newDate = sdf.parse(time); now.setTime(newDate); now.add(Calendar.MINUTE, m); return sdf.format(now.getTime()); } }
这就是整个工具类了,供君参考。
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持我们。
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