Java时间转换
package com.fh.util; import java.sql.Timestamp; import java.text.DateFormat; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Calendar; import java.util.Date; import java.util.GregorianCalendar; import java.util.List; /** * 日期处理工具函数包,包括日期对象、日期字符串相关转换函数 * * @version 1.0 <br> */ public class DateUtils { private final static SimpleDateFormat sdfYear = new SimpleDateFormat("yyyy"); private final static SimpleDateFormat sdfDay = new SimpleDateFormat( "yyyy-MM-dd"); private final static SimpleDateFormat sdfDays = new SimpleDateFormat( "yyyyMMdd"); private final static SimpleDateFormat sdfTime = new SimpleDateFormat( "yyyy-MM-dd HH:mm:ss"); /** * 获取YYYY格式 * * @return */ public static String getYear() { return sdfYear.format(new Date()); } /** * 获取YYYY-MM-DD格式 * * @return */ public static String getDay() { return sdfDay.format(new Date()); } /** * 获取YYYYMMDD格式 * * @return */ public static String getDays() { return sdfDays.format(new Date()); } /** * 获取YYYY-MM-DD HH:mm:ss格式 * * @return */ public static String getTime() { return sdfTime.format(new Date()); } /** * @Title: compareDate * @Description: TODO(日期比较，如果s>=e 返回true 否则返回false) * @param s * @param e * @return boolean * @throws * @author luguosui */ public static boolean compareDate(String s, String e) { if (fomatDate(s) == null || fomatDate(e) == null) { return false; } return fomatDate(s).getTime() >= fomatDate(e).getTime(); } /** * 格式化日期 * * @return */ public static Date fomatDate(String date) { DateFormat fmt = new SimpleDateFormat("yyyy-MM-dd"); try { return fmt.parse(date); } catch (ParseException e) { e.printStackTrace(); return null; } } /** * 校验日期是否合法 * * @return */ public static boolean isValidDate(String s) { DateFormat fmt = new SimpleDateFormat("yyyy-MM-dd"); try { fmt.parse(s); return true; } catch (Exception e) { // 如果throw java.text.ParseException或者NullPointerException，就说明格式不对 return false; } } /** * * @Description 获得时间年差 * @param startTime * @param endTime * @return */ public static int getDiffYear(String startTime, String endTime) { DateFormat fmt = new SimpleDateFormat("yyyy-MM-dd"); try { int years = (int) (((fmt.parse(endTime).getTime() - fmt.parse( startTime).getTime()) / (1000 * 60 * 60 * 24)) / 365); return years; } catch (Exception e) { // 如果throw java.text.ParseException或者NullPointerException，就说明格式不对 return 0; } } /** * * @Description 获得时间分钟差 * @param startTime * @param endTime * @return */ public static int getDiffMinute(String startTime, String endTime) { DateFormat fmt = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); try { int minute = (int) ((fmt.parse(endTime).getTime() - fmt.parse( startTime).getTime()) / 1000); return minute; } catch (Exception e) { // 如果throw java.text.ParseException或者NullPointerException，就说明格式不对 return 0; } } /** * <li>功能描述：时间相减得到天数 * * @param beginDateStr * @param endDateStr * @return long * @author Administrator */ public static long getDaySub(String beginDateStr, String endDateStr) { long day = 0; java.text.SimpleDateFormat format = new java.text.SimpleDateFormat( "yyyy-MM-dd"); java.util.Date beginDate = null; java.util.Date endDate = null; try { beginDate = format.parse(beginDateStr); endDate = format.parse(endDateStr); } catch (ParseException e) { e.printStackTrace(); } day = (endDate.getTime() - beginDate.getTime()) / (24 * 60 * 60 * 1000); // System.out.println("相隔的天数="+day); return day; } /** * 得到n天之后的日期 * * @param days * @return */ public static String getAfterDayDate(String days) { int daysInt = Integer.parseInt(days); Calendar canlendar = Calendar.getInstance(); // java.util包 canlendar.add(Calendar.DATE, daysInt); // 日期减 如果不够减会将月变动 Date date = canlendar.getTime(); SimpleDateFormat sdfd = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); String dateStr = sdfd.format(date); return dateStr; } /** * 得到n天之后是周几 * * @param days * @return */ public static String getAfterDayWeek(String days) { int daysInt = Integer.parseInt(days); Calendar canlendar = Calendar.getInstance(); // java.util包 canlendar.add(Calendar.DATE, daysInt); // 日期减 如果不够减会将月变动 Date date = canlendar.getTime(); SimpleDateFormat sdf = new SimpleDateFormat("E"); String dateStr = sdf.format(date); return dateStr; } /** * 定义常见的时间格式 */ private static String[] dateFormat = { "yyyy-MM-dd HH:mm:ss", "yyyy/MM/dd HH:mm:ss", "yyyy年MM月dd日HH时mm分ss秒", "yyyy-MM-dd", "yyyy/MM/dd", "yy-MM-dd", "yy/MM/dd", "yyyy年MM月dd日", "HH:mm:ss", "yyyyMMddHHmmss", "yyyyMMdd", "yyyy.MM.dd", "yy.MM.dd", "MM月dd日HH时mm分", "yyyy年MM月dd日 HH:mm:ss", "yyyy-MM-dd HH:mm" }; /** * <p> * <b>作者：</b>zy * </p> * <p> * <b>日期：</b>2011-9-8 * </p> * <p> * <b>方法描述：</b> 将日期格式从 java.util.Calendar 转到 java.sql.Timestamp 格式 * </p> * * @param date * 格式表示的日期 * @return <p> * <b>使用说明：</b> * </p> */ public static Timestamp convUtilCalendarToSqlTimestamp(Calendar date) { if (date == null) return null; else return new Timestamp(date.getTimeInMillis()); } /** * <p> * <b>作者：</b>zy * </p> * <p> * <b>日期：</b>2011-9-8 * </p> * <p> * <b>方法描述：</b> 将日期格式从 java.util.Timestamp 转到 java.util.Calendar 格式 * </p> * * @param date * 格式表示的日期 * @return <p> * <b>使用说明：</b> * </p> */ public static Calendar convSqlTimestampToUtilCalendar(Timestamp date) { if (date == null) return null; else { java.util.GregorianCalendar gc = new java.util.GregorianCalendar(); gc.setTimeInMillis(date.getTime()); return gc; } } /** * <p> * <b>作者：</b>zy * </p> * <p> * <b>日期：</b>2011-9-8 * </p> * <p> * <b>方法描述：</b> 解析一个字符串，形成一个Calendar对象，适应各种不同的日期表示法 * </p> * * @param dateStr * 期望解析的字符串，注意，不能传null进去，否则出错 * @return <p> * <b>使用说明：</b> <br> * <br> * 可输入的日期字串格式如下： <br> * "yyyy-MM-dd HH:mm:ss", <br> * "yyyy/MM/dd HH:mm:ss", <br> * "yyyy年MM月dd日HH时mm分ss秒", <br> * "yyyy-MM-dd", <br> * "yyyy/MM/dd", <br> * "yy-MM-dd", <br> * "yy/MM/dd", <br> * "yyyy年MM月dd日", <br> * "HH:mm:ss", <br> * "yyyyMMddHHmmss", <br> * "yyyyMMdd", <br> * "yyyy.MM.dd", <br> * "yy.MM.dd" * </p> */ public static Calendar parseDate(String dateStr) { if (dateStr == null || dateStr.trim().length() == 0) return null; Date result = parseDate(dateStr, 0); Calendar cal = Calendar.getInstance(); cal.setTime(result); return cal; } /** * <p> * <b>作者：</b>zy * </p> * <p> * <b>日期：</b>2011-9-8 * </p> * <p> * <b>方法描述：</b> 将一个日期转成日期时间格式，格式这样 2002-08-05 21:25:21 * </p> * * @param date * 期望格式化的日期对象 * @return 返回格式化后的字符串 * <p> * <b>使用说明：</b> <br> * Calendar date = new GregorianCalendar(); <br> * String ret = DateUtils.toDateTimeStr(date); <br> * 返回： <br> * ret = "2002-12-04 09:13:16"; * </p> */ public static String toDateTimeStr(Calendar date) { if (date == null) return null; return new SimpleDateFormat(dateFormat[0]).format(date.getTime()); } /** * <p> * <b>作者：</b>zy * </p> * <p> * <b>日期：</b>2011-9-8 * </p> * <p> * <b>方法描述：</b> 将一个日期转成日期时间格式 * </p> * * @param format * 日志格式序号 * @param date * 期望格式化的日期对象 * @return <p> * <b>使用说明：</b> * </p> */ public static String toDateTimeStr(int format, Calendar date) { if (date == null) return null; return new SimpleDateFormat(dateFormat[format]).format(date.getTime()); } /** * <p> * <b>作者：</b>zy * </p> * <p> * <b>日期：</b>2011-9-8 * </p> * <p> * <b>方法描述：</b> 将一个日期转成日期格式， 格式：yyyy-MM-dd * </p> * * @param date * 期望格式化的日期对象 * @return 返回格式化后的字符串 * <p> * <b>使用说明：</b> * </p> */ public static String toDateStr(Calendar date) { if (date == null) return null; return new SimpleDateFormat(dateFormat[3]).format(date.getTime()); } /** * <p> * <b>作者：</b>zy * </p> * <p> * <b>日期：</b>2011-9-8 * </p> * <p> * <b>方法描述：</b> 根据format数组的序号，将Calendar转换为对应格式的String * </p> * * @param date * 要转换的日期对象 * @param formatIndex * format数组中的索引 * @return 返回格式化后的字符串 * <p> * <b>使用说明：</b> * </p> */ public static String toDateStrByFormatIndex(Calendar date, int formatIndex) { if (date == null) return null; return new SimpleDateFormat(dateFormat[formatIndex]).format(date .getTime()); } /** * <p> * <b>作者：</b>zy * </p> * <p> * <b>日期：</b>2011-9-8 * </p> * <p> * <b>方法描述：</b> 第一个日期与第二个日期相差的天数 * </p> * * @param d1 * 第一个日期 * @param d2 * 第二个日期 * @return 两个日期之间相差的天数 * <p> * <b>使用说明：</b> * </p> */ public static int calendarMinus(Calendar d1, Calendar d2) { if (d1 == null || d2 == null) { return 0; } d1.set(Calendar.HOUR_OF_DAY, 0); d1.set(Calendar.MINUTE, 0); d1.set(Calendar.SECOND, 0); d2.set(Calendar.HOUR_OF_DAY, 0); d2.set(Calendar.MINUTE, 0); d2.set(Calendar.SECOND, 0); long t1 = d1.getTimeInMillis(); long t2 = d2.getTimeInMillis(); long daylong = 3600 * 24 * 1000; t1 = t1 - t1 % (daylong); t2 = t2 - t2 % (daylong); long t = t1 - t2; int value = (int) (t / (daylong)); return value; } /** * <p> * <b>作者：</b>zy * </p> * <p> * <b>日期：</b>2011-9-8 * </p> * <p> * <b>方法描述：</b> 第一个日期与第二个日期相差的天数 * </p> * * @param d1 * 第一个日期 * @param d2 * 第二个日期 * @return 两个日期之间相差的天数 * <p> * <b>使用说明：</b> * </p> */ public static long calendarminus(Calendar d1, Calendar d2) { if (d1 == null || d2 == null) { return 0; } return (d1.getTimeInMillis() - d2.getTimeInMillis()) / (3600 * 24000); } /** * <p> * <b>作者：</b>zy * </p> * <p> * <b>日期：</b>2011-9-8 10:00:00 * </p> * <p> * <b>方法描述：</b> 第一个日期与第二个日期相差的秒数 * </p> * * @param d1 * 第一个日期 * @param d2 * 第二个日期 * @return 两个日期之间相差的秒数 * <p> * <b>使用说明：</b> * </p> */ public static long calendarTime(Calendar d1, Calendar d2) { if (d1 == null || d2 == null) { return 0; } return (d1.getTimeInMillis() - d2.getTimeInMillis()) / 1000; } /** * <p> * <b>作者：</b>zy * </p> * <p> * * </p> * <p> * <b>方法描述：</b> 内部方法，根据某个索引中的日期格式解析日期 * </p> * * @param dateStr * 日期的字符串形式 * @param index * 日期格式索引 * @return 符合日期字符串的日期对象 * <p> * <b>使用说明：</b> * </p> */ public static Date parseDate(String dateStr, int index) { DateFormat df = null; try { df = new SimpleDateFormat(dateFormat[index]); return df.parse(dateStr); } catch (Exception aioe) { return null; } } /** * <p> * <b>作者：</b>zy * </p> * <p> * * </p> * <p> * <b>方法描述：</b> 字符转日期,字符串格式："yyyy-MM-dd"，例如2006-01-01 * </p> * * @param dateStr * 日期的字符串形式 * @return 符合日期字符串的日期对象 * <p> * <b>使用说明：</b> * </p> */ public static Date StringToDate(String dateStr) { if (dateStr == null || dateStr.trim().length() == 0) { return null; } return parseDate(dateStr, 3); } /** * <p> * <b>作者：</b>zy * </p> * <p> * * </p> * <p> * <b>方法描述：</b> 将日期转换为格式化后的日期字符串 * </p> * * @param date * 日期 * @param index * 日期格式索引 * @return <p> * <b>使用说明：</b> * </p> */ public static String dateToString(Date date, int index) { if (date == null) { return null; } return new SimpleDateFormat(dateFormat[index]).format(date); } /** * <p> * <b>作者：</b>zy * </p> * <p> * * </p> * <p> * <b>方法描述：</b> 返回固定格式的日期字符串。转换结果格式为："yyyy-MM-dd" * </p> * * @param date * 待转换的日期对象 * @return <p> * <b>使用说明：</b> * </p> */ public static String dateToString(Date date) { if (date == null) { return null; } return new SimpleDateFormat(dateFormat[3]).format(date); } /** * @Title: getStartDate * @Description: 获取当前日期，"yyyy-MM-dd 05:00:00" * @param @return 设定文件 * @return String 返回类型 * @throws */ public static String getStartDate() { String startTime = new SimpleDateFormat(dateFormat[3]) .format(new Date()); startTime = startTime + " 05:00:00"; return startTime; } /** * @Title: getDate * @Description: 获取当前日期，"yyyy-MM-dd" * @param @return 设定文件 * @return String 返回类型 * @throws */ public static String getDate() { return new SimpleDateFormat(dateFormat[3]).format(new Date()); } /** * @Title: getDateTime * @Description: 获取当前日期，"yyyy-MM-dd HH:mm:ss:SSS" * @param @return 设定文件 * @return String 返回类型 * @throws */ public static String getDateTime() { return new SimpleDateFormat(dateFormat[0]).format(new Date()); } public static String getDateTimeHHMM(String datetime) throws ParseException { return new SimpleDateFormat(dateFormat[15]) .format(new SimpleDateFormat(dateFormat[15]).parse(datetime)); } /** * <p> * <b>作者：</b>zy * </p> * <p> * * </p> * <p> * <b>方法描述：</b> 将日期格式从 java.util.Date 转到 java.sql.Timestamp 格式 * </p> * * @param date * @return <p> * <b>使用说明：</b> * </p> */ public static Timestamp convUtilDateToSqlTimestamp(Date date) { if (date == null) return null; else return new Timestamp(date.getTime()); } /** * <p> * <b>作者：</b>zy * </p> * <p> * * </p> * <p> * <b>方法描述：</b> 将Date对象转换成Calendar对象 * </p> * * @param date * @return <p> * <b>使用说明：</b> * </p> */ public static Calendar convUtilDateToUtilCalendar(Date date) { if (date == null) return null; else { java.util.GregorianCalendar gc = new java.util.GregorianCalendar(); gc.setTimeInMillis(date.getTime()); return gc; } } /** * <p> * <b>作者：</b>zy * </p> * <p> * * </p> * <p> * <b>方法描述：</b> 根据某个索引中的日期格式解析日期 * </p> * * @param dateStr * 日期 * @param index * 日期格式的索引 * @return <p> * <b>使用说明：</b> * </p> */ public static Timestamp parseTimestamp(String dateStr, int index) { DateFormat df = null; try { df = new SimpleDateFormat(dateFormat[index]); return new Timestamp(df.parse(dateStr).getTime()); } catch (ParseException pe) { return new Timestamp(parseDate(dateStr, index + 1).getTime()); } catch (ArrayIndexOutOfBoundsException aioe) { return null; } } /** * <p> * <b>作者：</b>zy * </p> * </p> * <p> * <b>方法描述：</b> 返回固定格式的日期字符串。转换结果格式为："yyyy-MM-dd" * </p> * * @param date * 待转换的日期对象 * @return <p> * <b>使用说明：</b> * </p> */ public static Timestamp parseTimestamp(String dateStr) { DateFormat df = null; try { df = new SimpleDateFormat(dateFormat[3]); return new Timestamp(df.parse(dateStr).getTime()); } catch (ParseException pe) { return null; } catch (ArrayIndexOutOfBoundsException aioe) { return null; } } /** * @Title: calculateCalendarByday * @Description: 日期加减天数 * @param calendar * @param days * @return Calendar 返回类型 */ public static Calendar calculateCalendarByday(Calendar calendar, int days) { calendar.add(Calendar.DAY_OF_MONTH, days); return calendar; } /** * 获取倒计时 * * @param countdownTime * 倒计时的时间，格式：yyyy-MM-dd HH:mm:ss * @return String 为null时转换失败 倒计时够天数显示天数，不够显示小时，不够小时显示分钟 * 2天后面没有1天，而是24小时，2小时同理 */ public static String getCountdownTime(String countdownTime) { try { Calendar c = Calendar.getInstance(); c.setTime(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss") .parse(countdownTime));// 将字符串转换为可获取毫秒数的日期类型 long nowDate = System.currentTimeMillis(); long countdown = (c.getTimeInMillis() - nowDate) / (1000 * 60);// 获取倒计时（分钟） long days = countdown / (60 * 24);// 天 long hours = countdown / 60 % 24;// 小时 long mins = countdown % 60;// 分钟 if (days > 0) { return (days + 1) + "天"; } if (hours > 0) { return (hours + 1) + "小时"; } if (mins > 0) { return mins + "分钟"; } return "0分钟"; } catch (ParseException e) { // TODO Auto-generated catch block e.printStackTrace(); } return null; } /** * 获取时间节点是在当前时间节点多长时间以前 * * @param oldTime * 之前的时间，格式：yyyy-MM-dd HH:mm:ss * @return String 为null时转换失败 倒计时够天数显示天数，不够显示小时，不够小时显示分钟 */ public static String getDiffTimeLessNow(String oldTime) { try { Calendar c = Calendar.getInstance(); c.setTime(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss") .parse(oldTime));// 将字符串转换为可获取毫秒数的日期类型 long nowDate = System.currentTimeMillis(); long countdown = (nowDate - c.getTimeInMillis()) / (1000 * 60);// 获取倒计时（分钟） long days = countdown / (60 * 24);// 天 long hours = countdown / 60 % 24;// 小时 long mins = countdown % 60;// 分钟 if (days > 0) { return days + "天"; } if (hours > 0) { return hours + "小时"; } if (mins > 0) { return mins + "分钟"; } return "0分钟"; } catch (ParseException e) { e.printStackTrace(); } return null; } /** * 是否已经过时 * * @param time * 判断过时的时间对象，格式：yyyy-MM-dd HH:mm:ss * @return boolean 为null时判断失败 true表示改时间是当前时间节点之前的时间，false表示改时间是当前时间节点之后的时间 */ public static boolean isOldTime(String time) { try { Calendar c = Calendar.getInstance(); c.setTime(new SimpleDateFormat("yyyy-MM-dd HH:mm").parse(time));// 将字符串转换为可获取毫秒数的日期类型 long nowDate = System.currentTimeMillis(); long dateDiff = (c.getTimeInMillis() - nowDate);// 获取时间差 if (dateDiff < 0) { return true; } else { return false; } } catch (ParseException e) { e.printStackTrace(); } return false; } /** * @Description: 获得两个日期之间的所有日期 * @author zy * @date 2015-9-21 下午03:32:21 * @param startDate * 2015-09-21 * @param endDate * 2015-11-13 * @return List<String> String日期格式"yyyy-MM-dd"的集合 */ public static List<String> getDates(String startDate, String endDate) { List<String> result = new ArrayList<String>(); if (startDate.equals(endDate)) { return result; } Calendar startDay = Calendar.getInstance(); Calendar endDay = Calendar.getInstance(); startDay.setTime(DateUtils.parseDate(startDate, 3)); endDay.setTime(DateUtils.parseDate(endDate, 3)); Calendar temp = (Calendar) startDay.clone(); temp.add(Calendar.DAY_OF_YEAR, 1); result.add(startDate.substring(0, 10)); while (temp.before(endDay)) { result.add(DateUtils.dateToString(temp.getTime())); temp.add(Calendar.DAY_OF_YEAR, 1); } result.add(endDate.substring(0, 10)); return result; } /** * @Description: 获得两个月之间的所有月 * @author zy * @date 2015-9-22 上午10:28:02 * @param minDate * 2015-01 * @param maxDate * 2016-07 * @return List<String> * @throws ParseException */ public static List<String> getMonthBetween(String minDate, String maxDate) throws ParseException { ArrayList<String> result = new ArrayList<String>(); SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM");// 格式化为年月 Calendar min = Calendar.getInstance(); Calendar max = Calendar.getInstance(); min.setTime(sdf.parse(minDate)); min.set(min.get(Calendar.YEAR), min.get(Calendar.MONTH), 1); max.setTime(sdf.parse(maxDate)); max.set(max.get(Calendar.YEAR), max.get(Calendar.MONTH), 2); Calendar curr = min; while (curr.before(max)) { result.add(sdf.format(curr.getTime())); curr.add(Calendar.MONTH, 1); } return result; } /** * @Description: 获取某年某月最后一天 * @author zy * @date 2015-9-22 下午02:10:25 * @param date * 2015-02 * @return */ public static String getLastDayOfMonth(String date) { int year = Integer.parseInt(date.split("-")[0]); int month = Integer.parseInt(date.split("-")[1]); Calendar cal = Calendar.getInstance(); // 设置年份 cal.set(Calendar.YEAR, year); // 设置月份 cal.set(Calendar.MONTH, month - 1); // 获取某月最大天数 int lastDay = cal.getActualMaximum(Calendar.DAY_OF_MONTH); // 设置日历中月份的最大天数 cal.set(Calendar.DAY_OF_MONTH, lastDay); // 格式化日期 SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); String lastDayOfMonth = sdf.format(cal.getTime()); return lastDayOfMonth; } /** * @Description: 获取某年某月第一天 * @author zy * @date 2015-9-22 下午02:11:56 * @return */ public static String getFirstDayOfMonth(String date) { int year = Integer.parseInt(date.split("-")[0]); int month = Integer.parseInt(date.split("-")[1]); Calendar cal = Calendar.getInstance(); // 设置年份 cal.set(Calendar.YEAR, year); // 设置月份 cal.set(Calendar.MONTH, month - 1); // 获取某月最小天数 int lastDay = cal.getActualMinimum(Calendar.DAY_OF_MONTH); // 设置日历中月份的最大天数 cal.set(Calendar.DAY_OF_MONTH, lastDay); // 格式化日期 SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); String lastDayOfMonth = sdf.format(cal.getTime()); return lastDayOfMonth; } /** * 得到年月日时分秒 */ public static String getNowtime() { Calendar calendar = new GregorianCalendar(); return calendar.get(Calendar.YEAR) + "" + (calendar.get(Calendar.MONTH) + 1) + "" + calendar.get(Calendar.DAY_OF_MONTH) + "" + calendar.get(Calendar.HOUR_OF_DAY) + "" + calendar.get(Calendar.MINUTE) + "" + calendar.get(Calendar.SECOND) + "" + calendar.get(Calendar.MILLISECOND); } /** * 获得昨天5点 * * @return * @throws ParseException */ public static String getYesterdayFive() throws ParseException { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd 05:00:00"); Calendar calendar = Calendar.getInstance(); calendar.setTime(new Date()); calendar.add(Calendar.DATE, -1); return sdf.format(calendar.getTime()); } /** * 获得今天5点 * * @return * @throws ParseException */ public static String getDateFive() throws ParseException { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd 05:00:00"); Calendar calendar = Calendar.getInstance(); calendar.setTime(new Date()); return sdf.format(calendar.getTime()); } /** * 获得明天天5点 * * @return * @throws ParseException */ public static String getTomorrowFive() throws ParseException { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd 05:00:00"); Calendar calendar = Calendar.getInstance(); calendar.setTime(new Date()); calendar.add(Calendar.DATE, 1); return sdf.format(calendar.getTime()); } /** * 获得上周起始时间 * * @return * @throws ParseException */ public static String getLastWeekStartTime() throws ParseException { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd 05:00:00"); Calendar calendar = Calendar.getInstance(); int dayOfWeek = calendar.get(Calendar.DAY_OF_WEEK) - 1; int offset = 1 - dayOfWeek; calendar.add(Calendar.DATE, offset - 7); return sdf.format(calendar.getTime()); } /** * 获得上周结束时间 * * @return * @throws ParseException */ public static String getLastWeekEndTime() throws ParseException { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd 05:00:00"); Calendar calendar = Calendar.getInstance(); int dayOfWeek = calendar.get(Calendar.DAY_OF_WEEK) - 1; int offset = 7 - dayOfWeek; calendar.add(Calendar.DATE, offset - 7); return sdf.format(calendar.getTime()); } /** * 获得当周起始时间 * * @return * @throws ParseException */ public static String getStartWeek(String dateStr) throws ParseException { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Date date = sdf.parse(dateStr); Calendar calendar = Calendar.getInstance(); calendar.setTime(date); calendar.set(Calendar.HOUR_OF_DAY, 0); calendar.set(Calendar.SECOND, 0); calendar.set(Calendar.MINUTE, 0); calendar.set(Calendar.DAY_OF_WEEK, calendar.getActualMinimum(Calendar.DAY_OF_WEEK)); return sdf.format(calendar.getTime()); } /** * 获得当周结束时间 * * @return * @throws ParseException */ public static String getEndWeek(String dateStr) throws ParseException { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Date date = sdf.parse(dateStr); Calendar calendar = Calendar.getInstance(); calendar.setTime(date); calendar.set(Calendar.HOUR_OF_DAY, 23); calendar.set(Calendar.SECOND, 59); calendar.set(Calendar.MINUTE, 59); calendar.set(Calendar.DAY_OF_WEEK, calendar.getActualMaximum(calendar.DAY_OF_WEEK)); return sdf.format(calendar.getTime()); } /** * 获得当月起始时间 * * @return * @throws ParseException */ public static String getStartMounth(String dateStr) throws ParseException { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Date date = sdf.parse(dateStr); Calendar calendar = Calendar.getInstance(); calendar.setTime(date); calendar.set(Calendar.HOUR_OF_DAY, 0); calendar.set(Calendar.SECOND, 0); calendar.set(Calendar.MINUTE, 0); calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMinimum(Calendar.DAY_OF_MONTH)); return sdf.format(calendar.getTime()); } /** * 获得当月结束时间 * * @return * @throws ParseException */ public static String getEndMounth(String dateStr) throws ParseException { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Date date = sdf.parse(dateStr); Calendar calendar = Calendar.getInstance(); calendar.setTime(date); calendar.set(Calendar.HOUR_OF_DAY, 23); calendar.set(Calendar.SECOND, 59); calendar.set(Calendar.MINUTE, 59); calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(calendar.DAY_OF_MONTH)); return sdf.format(calendar.getTime()); } /** * 获得当月起始时间 * * @return * @throws ParseException */ public static String getStartLastMounth(String dateStr) throws ParseException { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Date date = sdf.parse(dateStr); Calendar calendar = Calendar.getInstance(); calendar.setTime(date); calendar.add(Calendar.MONTH, -1); calendar.set(Calendar.HOUR_OF_DAY, 0); calendar.set(Calendar.SECOND, 0); calendar.set(Calendar.MINUTE, 0); calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMinimum(Calendar.DAY_OF_MONTH)); return sdf.format(calendar.getTime()); } /** * 获得当月结束时间 * * @return * @throws ParseException */ public static String getEndLastMounth(String dateStr) throws ParseException { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Date date = sdf.parse(dateStr); Calendar calendar = Calendar.getInstance(); calendar.setTime(date); calendar.add(Calendar.MONTH, -1); calendar.set(Calendar.HOUR_OF_DAY, 23); calendar.set(Calendar.SECOND, 59); calendar.set(Calendar.MINUTE, 59); calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(calendar.DAY_OF_MONTH)); return sdf.format(calendar.getTime()); } /** * 获取当前季度 起始时间 * * @return * @throws ParseException */ public static String getStartQuarter(String dateStr) throws ParseException { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Date date = sdf.parse(dateStr); Calendar calendar = Calendar.getInstance(); calendar.setTime(date); int currentMonth = calendar.get(Calendar.MONTH) + 1; try { if (currentMonth >= 1 && currentMonth <= 3) calendar.set(Calendar.MONTH, 0); else if (currentMonth >= 4 && currentMonth <= 6) calendar.set(Calendar.MONTH, 3); else if (currentMonth >= 7 && currentMonth <= 9) calendar.set(Calendar.MONTH, 4); else if (currentMonth >= 10 && currentMonth <= 12) calendar.set(Calendar.MONTH, 9); } catch (Exception e) { e.printStackTrace(); } calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMinimum(calendar.DAY_OF_MONTH)); calendar.set(Calendar.HOUR_OF_DAY, 0); calendar.set(Calendar.SECOND, 0); calendar.set(Calendar.MINUTE, 0); return sdf.format(calendar.getTime()); } /** * 获取当季的结束时间 * * @throws ParseException */ public static String getEndQuarter(String dateStr) throws ParseException { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Date date = sdf.parse(dateStr); Calendar calendar = Calendar.getInstance(); calendar.setTime(date); int currentMonth = calendar.get(calendar.MONTH) + 1; try { if (currentMonth >= 1 && currentMonth <= 3) { calendar.set(Calendar.MONTH, 2); calendar.set(Calendar.DATE, 29); } else if (currentMonth >= 4 && currentMonth <= 6) { calendar.set(Calendar.MONTH, 5); calendar.set(Calendar.DATE, 30); } else if (currentMonth >= 7 && currentMonth <= 9) { calendar.set(Calendar.MONTH, 8); calendar.set(Calendar.DATE, 30); } else if (currentMonth >= 10 && currentMonth <= 12) { calendar.set(Calendar.MONTH, 11); calendar.set(Calendar.DATE, 31); } } catch (Exception e) { e.printStackTrace(); } calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(calendar.DAY_OF_MONTH)); calendar.set(Calendar.HOUR_OF_DAY, 23); calendar.set(Calendar.SECOND, 59); calendar.set(Calendar.MINUTE, 59); return sdf.format(calendar.getTime()); } /** * 获取当年起始时间 * * @throws ParseException */ public static String getStartYear(String dateStr) throws ParseException { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Date date = sdf.parse(dateStr); Calendar calendar = Calendar.getInstance(); calendar.setTime(date); try { calendar.set(Calendar.MONTH, 0); calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMinimum(Calendar.DAY_OF_MONTH)); } catch (Exception e) { e.printStackTrace(); } calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMinimum(calendar.DAY_OF_MONTH)); calendar.set(Calendar.HOUR_OF_DAY, 0); calendar.set(Calendar.SECOND, 0); calendar.set(Calendar.MINUTE, 0); return sdf.format(calendar.getTime()); } /** * 获取当年结束时间 * * @throws ParseException */ public static String getEndYear(String dateStr) throws ParseException { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Date date = sdf.parse(dateStr); Calendar calendar = Calendar.getInstance(); calendar.setTime(date); try { calendar.set(Calendar.MONTH, 11); calendar.set(Calendar.DAY_OF_MONTH, calendar.getMaximum(Calendar.DAY_OF_MONTH)); } catch (Exception e) { e.printStackTrace(); } calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(calendar.DAY_OF_MONTH)); calendar.set(Calendar.HOUR_OF_DAY, 23); calendar.set(Calendar.SECOND, 59); calendar.set(Calendar.MINUTE, 59); return sdf.format(calendar.getTime()); } public static void main(String[] args) { // System.out.println(getDateTime()); // System.out.println(getStartDate()); // Calendar c1 = // DateUtils.convUtilDateToUtilCalendar(DateUtils.parseDate("2014-05-10 10:52",15)); // TimeZone tz = TimeZone.getTimeZone("GMT+08:00"); // 获得时区 // Calendar cal = Calendar.getInstance(); // cal.set(Calendar.SECOND, 0); // cal.setTimeZone(tz); // 设置时区 // c1.setTimeZone(tz); // System.out.println(c1.getTimeInMillis()); // System.out.println(cal.getTimeInMillis()); // System.out.println(c1.getTime()); // System.out.println(cal.getTime()); // System.out.println(DateUtils.calendarTime(c1, cal));; // System.out.println(DateUtils.getCountdownTime("2015-01-25 18:22:00")); // System.out.println(DateUtils.getCountdownTime("2015-01-24 18:22:00")); // System.out.println(DateUtils.getCountdownTime("2015-01-24 18:15:00")); // System.out.println(DateUtils.isOldTime("2015-01-23 19:22:00")); // System.out.println(DateUtils.getDiffTimeLessNow("2015-01-23 19:15:00")); Calendar c = Calendar.getInstance(); try { System.out.println(getStartWeek("2017-01-15 05:00:00")); // System.out.println(getLastWeekEndTime()); // System.out.println(getStartWeek("2015-01-23 19:22:00")); // System.out.println(getEndWeek("2015-01-23 19:22:00")); // System.out.println(getStartMounth("2015-01-23 19:22:00")); // System.out.println(getEndMounth("2015-01-23 19:22:00")); // System.out.println(getStartQuarter("2015-01-23 19:22:00")); // System.out.println(getEndQuarter("2015-01-23 19:22:00")); // System.out.println(getStartYear("2015-01-23 19:22:00")); // System.out.println(getEndYear("2015-01-23 19:22:00")); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } }
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