導入配置依賴
<dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang3</artifactId> <version>3.7</version> </dependency>
代碼如下
package com.democontroller.Utils; import java.lang.management.ManagementFactory; import java.text.DateFormat; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; import java.util.TimeZone; import org.apache.commons.lang3.StringUtils; import org.apache.commons.lang3.time.FastDateFormat; /** * 日期工具類, 繼承org.apache.commons.lang.time.DateUtils類 * @version 2017-1-4 */ public class DateUtils extends org.apache.commons.lang3.time.DateUtils { private static String[] parsePatterns = { "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM-dd HH", "yyyy-MM", "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM/dd HH", "yyyy/MM", "yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM.dd HH", "yyyy.MM", "yyyy年MM月dd日", "yyyy年MM月dd日 HH時mm分ss秒", "yyyy年MM月dd日 HH時mm分", "yyyy年MM月dd日 HH時", "yyyy年MM月", "yyyy"}; /** * 得到日期字符串 ,轉換格式(yyyy-MM-dd) */ public static String formatDate(Date date) { return formatDate(date, "yyyy-MM-dd"); } /** * 得到日期字符串 默認格式(yyyy-MM-dd) pattern可以為:"yyyy-MM-dd" "HH:mm:ss" "E" */ public static String formatDate(long dateTime, String pattern) { return formatDate(new Date(dateTime), pattern); } /** * 得到日期字符串 默認格式(yyyy-MM-dd) pattern可以為:"yyyy-MM-dd" "HH:mm:ss" "E" */ public static String formatDate(Date date, String pattern) { String formatDate = null; if (date != null){ // if (StringUtils.isNotBlank(pattern)) { // formatDate = DateFormatUtils.format(date, pattern); // } else { // formatDate = DateFormatUtils.format(date, "yyyy-MM-dd"); // } if (StringUtils.isBlank(pattern)) { pattern = "yyyy-MM-dd"; } formatDate = FastDateFormat.getInstance(pattern).format(date); } return formatDate; } /** * 得到日期時間字符串,轉換格式(yyyy-MM-dd HH:mm:ss) */ public static String formatDateTime(Date date) { return formatDate(date, "yyyy-MM-dd HH:mm:ss"); } /** * 得到當前日期字符串 格式(yyyy-MM-dd) */ public static String getDate() { return getDate("yyyy-MM-dd"); } /** * 得到當前日期字符串 格式(yyyy-MM-dd) pattern可以為:"yyyy-MM-dd" "HH:mm:ss" "E" */ public static String getDate(String pattern) { // return DateFormatUtils.format(new Date(), pattern); return FastDateFormat.getInstance(pattern).format(new Date()); } /** * 得到當前日期前后多少天,月,年的日期字符串 * @param pattern 格式(yyyy-MM-dd) pattern可以為:"yyyy-MM-dd" "HH:mm:ss" "E" * @param amont 數量,前為負數,后為正數 * @param type 類型,可參考Calendar的常量(如:Calendar.HOUR、Calendar.MINUTE、Calendar.SECOND) * @return */ public static String getDate(String pattern, int amont, int type) { Calendar calendar = Calendar.getInstance(); calendar.setTime(new Date()); calendar.add(type, amont); // return DateFormatUtils.format(calendar.getTime(), pattern); return FastDateFormat.getInstance(pattern).format(calendar.getTime()); } /** * 得到當前時間字符串 格式(HH:mm:ss) */ public static String getTime() { return formatDate(new Date(), "HH:mm:ss"); } /** * 得到當前日期和時間字符串 格式(yyyy-MM-dd HH:mm:ss) */ public static String getDateTime() { return formatDate(new Date(), "yyyy-MM-dd HH:mm:ss"); } /** * 得到當前年份字符串 格式(yyyy) */ public static String getYear() { return formatDate(new Date(), "yyyy"); } /** * 得到當前月份字符串 格式(MM) */ public static String getMonth() { return formatDate(new Date(), "MM"); } /** * 得到當天字符串 格式(dd) */ public static String getDay() { return formatDate(new Date(), "dd"); } /** * 得到當前星期字符串 格式(E)星期幾 */ public static String getWeek() { return formatDate(new Date(), "E"); } /** * 日期型字符串轉化為日期 格式 see to DateUtils#parsePatterns */ public static Date parseDate(Object str) { if (str == null){ return null; } try { return parseDate(str.toString(), parsePatterns); } catch (ParseException e) { return null; } } /** * 獲取過去的天數 * @param date * @return */ public static long pastDays(Date date) { long t = System.currentTimeMillis()-date.getTime(); return t/(24*60*60*1000); } /** * 獲取過去的小時 * @param date * @return */ public static long pastHour(Date date) { long t = System.currentTimeMillis()-date.getTime(); return t/(60*60*1000); } /** * 獲取過去的分鍾 * @param date * @return */ public static long pastMinutes(Date date) { long t = System.currentTimeMillis()-date.getTime(); return t/(60*1000); } /** * 獲取過去的秒 * @param date * @return */ public static long pastSecnod(Date date) { long t = System.currentTimeMillis()-date.getTime(); return t/(1000); } /** * 獲取兩個日期之間的天數 * * @param before * @param after * @return */ public static double getDistanceOfTwoDate(Date before, Date after) { long beforeTime = before.getTime(); long afterTime = after.getTime(); return (afterTime - beforeTime) / (1000 * 60 * 60 * 24); } /** * 獲取某月有幾天 * @param date 日期 * @return 天數 */ public static int getMonthHasDays(Date date){ // String yyyyMM = new SimpleDateFormat("yyyyMM").format(date); String yyyyMM = FastDateFormat.getInstance("yyyyMM").format(date); String year = yyyyMM.substring(0, 4); String month = yyyyMM.substring(4, 6); String day31 = ",01,03,05,07,08,10,12,"; String day30 = "04,06,09,11"; int day = 0; if (day31.contains(month)) { day = 31; } else if (day30.contains(month)) { day = 30; } else { int y = Integer.parseInt(year); if ((y % 4 == 0 && (y % 100 != 0)) || y % 400 == 0) { day = 29; } else { day = 28; } } return day; } /** * 獲取日期是當年的第幾周 * @param date * @return */ public static int getWeekOfYear(Date date){ Calendar cal = Calendar.getInstance(); cal.setTime(date); return cal.get(Calendar.WEEK_OF_YEAR); } /** * 獲取一天的開始時間(如:2015-11-3 00:00:00.000) * @param date 日期 * @return */ public static Date getOfDayFirst(Date date) { if (date == null){ return null; } Calendar calendar = Calendar.getInstance(); calendar.setTime(date); calendar.set(Calendar.HOUR, 0); calendar.set(Calendar.MINUTE, 0); calendar.set(Calendar.SECOND, 0); calendar.set(Calendar.MILLISECOND, 0); return calendar.getTime(); } /** * 獲取一天的最后時間(如:2015-11-3 23:59:59.999) * @param date 日期 * @return */ public static Date getOfDayLast(Date date) { if (date == null){ return null; } Calendar calendar = Calendar.getInstance(); calendar.setTime(date); calendar.set(Calendar.HOUR, 23); calendar.set(Calendar.MINUTE, 59); calendar.set(Calendar.SECOND, 59); calendar.set(Calendar.MILLISECOND, 999); return calendar.getTime(); } /** * 獲取服務器啟動時間 * @param * @return */ public static Date getServerStartDate(){ long time = ManagementFactory.getRuntimeMXBean().getStartTime(); return new Date(time); } /** * 格式化為日期范圍字符串 * @param beginDate 2018-01-01 * @param endDate 2018-01-31 * @return 2018-01-01 ~ 2018-01-31 */ public static String formatDateBetweenString(Date beginDate, Date endDate){ String begin = DateUtils.formatDate(beginDate); String end = DateUtils.formatDate(endDate); if (StringUtils.isNoneBlank(begin, end)){ return begin + " ~ " + end; } return null; } /** * 解析日期范圍字符串為日期對象 * @param dateString 2018-01-01 ~ 2018-01-31 * @return new Date[]{2018-01-01, 2018-01-31} */ public static Date[] parseDateBetweenString(String dateString){ Date beginDate = null; Date endDate = null; if (StringUtils.isNotBlank(dateString)){ String[] ss = StringUtils.split(dateString, "~"); if (ss != null && ss.length == 2){ String begin = StringUtils.trim(ss[0]); String end = StringUtils.trim(ss[1]); if (StringUtils.isNoneBlank(begin, end)){ beginDate = DateUtils.parseDate(begin); endDate = DateUtils.parseDate(end); } } } return new Date[]{beginDate, endDate}; } public static final int SECONDS_IN_DAY = 60 * 60 * 24; public static final long MILLIS_IN_DAY = 1000L * SECONDS_IN_DAY; public static boolean isSameDayOfMillis(final long ms1, final long ms2) { final long interval = ms1 - ms2; return interval < MILLIS_IN_DAY && interval > -1L * MILLIS_IN_DAY && toDay(ms1) == toDay(ms2); } private static long toDay(long millis) { return (millis + TimeZone.getDefault().getOffset(millis)) / MILLIS_IN_DAY; } /** * 給時間加上幾個小時 * @param date 時間 * @param hour 需要加的時間 * @return */ public static String addDateMinut(Date date, int hour){ SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Calendar cal = Calendar.getInstance(); cal.setTime(date); cal.add(Calendar.HOUR, hour);// 24小時制 date = cal.getTime(); cal = null; return format.format(date); } /** * 給時間加上幾個小時 * @param date 時間 * @param hour 需要加的時間 * @return DATE */ public static Date addDate(Date date, int hour){ SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Calendar cal = Calendar.getInstance(); cal.setTime(date); cal.add(Calendar.HOUR, hour);// 24小時制 date = cal.getTime(); cal = null; return date; } /** * 日期比較 * @param date1 日期參數1 * @param date2 日期參數2 * @return 1 date1>date2;-1 date1<date2;0 date1=date2 */ public static int compareDate(String date1, String date2) { DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); try { Date dt1 = df.parse(date1); Date dt2 = df.parse(date2); if (dt1.getTime() > dt2.getTime()) { return 1; } else if (dt1.getTime() < dt2.getTime()) { return -1; } else { return 0; } } catch (Exception exception) { exception.printStackTrace(); } return 0; } public static void main(String[] args) throws ParseException { compareDate("2018-09-15 20:20:00","2018-09-15 20:20:00"); // System.out.println(formatDate(parseDate("2010/3/6"))); // System.out.println(getDate("yyyy年MM月dd日 E")); // long time = new Date().getTime()-parseDate("2012-11-19").getTime(); // System.out.println(time/(24*60*60*1000)); // System.out.println(getWeekOfYear(new Date())); // System.out.println(formatDate(getOfDayFirst(parseDate("2015/3/6")),"yyyy-MM-dd HH:mm:ss.sss")); // System.out.println(formatDate(getOfDayLast(parseDate("2015/6/6")),"yyyy-MM-dd HH:mm:ss.sss")); } }