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- import java.text.ParseException;
- import java.text.SimpleDateFormat;
- import java.util.Calendar;
- import java.util.Date;
- import java.util.HashMap;
- import java.util.Map;
- /**
- * 所有时间按当前2014-12-02计算
- * @author alone
- *
- */
- public class DateUtil {
- private static String ymdhms = "yyyy-MM-dd HH:mm:ss";
- private static String ymd = "yyyy-MM-dd";
- public static SimpleDateFormat ymdSDF = new SimpleDateFormat(ymd);
- private static String year = "yyyy";
- private static String month = "MM";
- private static String day = "dd";
- public static SimpleDateFormat yyyyMMddHHmmss = new SimpleDateFormat(ymdhms);
- public static SimpleDateFormat yearSDF = new SimpleDateFormat(year);
- public static SimpleDateFormat monthSDF = new SimpleDateFormat(month);
- public static SimpleDateFormat daySDF = new SimpleDateFormat(day);
- public static SimpleDateFormat yyyyMMddHHmm = new SimpleDateFormat(
- "yyyy-MM-dd HH:mm");
- public static SimpleDateFormat yyyyMMdd = new SimpleDateFormat("yyyy-MM-dd");
- public static SimpleDateFormat yyyyMMddHH_NOT_ = new SimpleDateFormat(
- "yyyyMMdd");
- public static long DATEMM = 86400L;
- /**
- * 获得当前时间
- * 格式:2014-12-02 10:38:53
- * @return String
- */
- public static String getCurrentTime() {
- return yyyyMMddHHmmss.format(new Date());
- }
- /**
- * 可以获取昨天的日期
- * 格式:2014-12-01
- * @return String
- */
- public static String getYesterdayYYYYMMDD() {
- Date date = new Date(System.currentTimeMillis() - DATEMM * 1000L);
- String str = yyyyMMdd.format(date);
- try {
- date = yyyyMMddHHmmss.parse(str + " 00:00:00");
- return yyyyMMdd.format(date);
- } catch (ParseException e) {
- e.printStackTrace();
- }
- return "";
- }
- /**
- * 可以获取后退N天的日期
- * 格式:传入2 得到2014-11-30
- * @param backDay
- * @return String
- */
- public String getStrDate(String backDay) {
- Calendar calendar = Calendar.getInstance() ;
- calendar.add(Calendar.DATE, Integer.parseInt("-" + backDay));
- SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd") ;
- String back = sdf.format(calendar.getTime()) ;
- return back ;
- }
- /**
- *获取当前的年、月、日
- * @return String
- */
- public static String getCurrentYear() {
- return yearSDF.format(new Date());
- }
- public static String getCurrentMonth() {
- return monthSDF.format(new Date());
- }
- public static String getCurrentDay() {
- return daySDF.format(new Date());
- }
- /**
- * 获取年月日 也就是当前时间
- * 格式:2014-12-02
- * @return String
- */
- public static String getCurrentymd() {
- return ymdSDF.format(new Date());
- }
- /**
- * 获取今天0点开始的秒数
- * @return long
- */
- public static long getTimeNumberToday() {
- Date date = new Date();
- String str = yyyyMMdd.format(date);
- try {
- date = yyyyMMdd.parse(str);
- return date.getTime() / 1000L;
- } catch (ParseException e) {
- e.printStackTrace();
- }
- return 0L;
- }
- /**
- * 获取今天的日期
- * 格式:20141202
- * @return String
- */
- public static String getTodateString() {
- String str = yyyyMMddHH_NOT_.format(new Date());
- return str;
- }
- /**
- * 获取昨天的日期
- * 格式:20141201
- * @return String
- */
- public static String getYesterdayString() {
- Date date = new Date(System.currentTimeMillis() - DATEMM * 1000L);
- String str = yyyyMMddHH_NOT_.format(date);
- return str;
- }
- /**
- * 获得昨天零点
- *
- * @return Date
- */
- public static Date getYesterDayZeroHour() {
- Calendar cal = Calendar.getInstance();
- cal.add(Calendar.DATE, -1);
- cal.set(Calendar.SECOND, 0);
- cal.set(Calendar.MINUTE, 0);
- cal.set(Calendar.HOUR, 0);
- return cal.getTime();
- }
- /**
- * 把long型日期转String ;---OK
- *
- * @param date
- * long型日期;
- * @param format
- * 日期格式;
- * @return
- */
- public static String longToString(long date, String format) {
- SimpleDateFormat sdf = new SimpleDateFormat(format);
- // 前面的lSysTime是秒数,先乘1000得到毫秒数,再转为java.util.Date类型
- java.util.Date dt2 = new Date(date * 1000L);
- String sDateTime = sdf.format(dt2); // 得到精确到秒的表示:08/31/2006 21:08:00
- return sDateTime;
- }
- /**
- * 获得今天零点
- *
- * @return Date
- */
- public static Date getTodayZeroHour() {
- Calendar cal = Calendar.getInstance();
- cal.set(Calendar.SECOND, 0);
- cal.set(Calendar.MINUTE, 0);
- cal.set(Calendar.HOUR, 0);
- return cal.getTime();
- }
- /**
- * 获得昨天23时59分59秒
- *
- * @return
- */
- public static Date getYesterDay24Hour() {
- Calendar cal = Calendar.getInstance();
- cal.add(Calendar.DATE, -1);
- cal.set(Calendar.SECOND, 59);
- cal.set(Calendar.MINUTE, 59);
- cal.set(Calendar.HOUR, 23);
- return cal.getTime();
- }
- /**
- * String To Date ---OK
- *
- * @param date
- * 待转换的字符串型日期;
- * @param format
- * 转化的日期格式
- * @return 返回该字符串的日期型数据;
- */
- public static Date stringToDate(String date, String format) {
- SimpleDateFormat sdf = new SimpleDateFormat(format);
- try {
- return sdf.parse(date);
- } catch (ParseException e) {
- return null;
- }
- }
- /**
- * 获得指定日期所在的自然周的第一天,即周日
- *
- * @param date
- * 日期
- * @return 自然周的第一天
- */
- public static Date getStartDayOfWeek(Date date) {
- Calendar c = Calendar.getInstance();
- c.setTime(date);
- c.set(Calendar.DAY_OF_WEEK, 1);
- date = c.getTime();
- return date;
- }
- /**
- * 获得指定日期所在的自然周的最后一天,即周六
- *
- * @param date
- * @return
- */
- public static Date getLastDayOfWeek(Date date) {
- Calendar c = Calendar.getInstance();
- c.setTime(date);
- c.set(Calendar.DAY_OF_WEEK, 7);
- date = c.getTime();
- return date;
- }
- /**
- * 获得指定日期所在当月第一天
- *
- * @param date
- * @return
- */
- public static Date getStartDayOfMonth(Date date) {
- Calendar c = Calendar.getInstance();
- c.setTime(date);
- c.set(Calendar.DAY_OF_MONTH, 1);
- date = c.getTime();
- return date;
- }
- /**
- * 获得指定日期所在当月最后一天
- *
- * @param date
- * @return
- */
- public static Date getLastDayOfMonth(Date date) {
- Calendar c = Calendar.getInstance();
- c.setTime(date);
- c.set(Calendar.DATE, 1);
- c.add(Calendar.MONTH, 1);
- c.add(Calendar.DATE, -1);
- date = c.getTime();
- return date;
- }
- /**
- * 获得指定日期的下一个月的第一天
- *
- * @param date
- * @return
- */
- public static Date getStartDayOfNextMonth(Date date) {
- Calendar c = Calendar.getInstance();
- c.setTime(date);
- c.add(Calendar.MONTH, 1);
- c.set(Calendar.DAY_OF_MONTH, 1);
- date = c.getTime();
- return date;
- }
- /**
- * 获得指定日期的下一个月的最后一天
- *
- * @param date
- * @return
- */
- public static Date getLastDayOfNextMonth(Date date) {
- Calendar c = Calendar.getInstance();
- c.setTime(date);
- c.set(Calendar.DATE, 1);
- c.add(Calendar.MONTH, 2);
- c.add(Calendar.DATE, -1);
- date = c.getTime();
- return date;
- }
- /**
- *
- * 求某一个时间向前多少秒的时间(currentTimeToBefer)---OK
- *
- * @param givedTime
- * 给定的时间
- * @param interval
- * 间隔时间的毫秒数;计算方式 :n(天)*24(小时)*60(分钟)*60(秒)(类型)
- * @param format_Date_Sign
- * 输出日期的格式;如yyyy-MM-dd、yyyyMMdd等;
- */
- public static String givedTimeToBefer(String givedTime, long interval,
- String format_Date_Sign) {
- String tomorrow = null;
- try {
- SimpleDateFormat sdf = new SimpleDateFormat(format_Date_Sign);
- Date gDate = sdf.parse(givedTime);
- long current = gDate.getTime(); // 将Calendar表示的时间转换成毫秒
- long beforeOrAfter = current - interval * 1000L; // 将Calendar表示的时间转换成毫秒
- Date date = new Date(beforeOrAfter); // 用timeTwo作参数构造date2
- tomorrow = new SimpleDateFormat(format_Date_Sign).format(date);
- } catch (ParseException e) {
- e.printStackTrace();
- }
- return tomorrow;
- }
- /**
- * 把String 日期转换成long型日期;---OK
- *
- * @param date
- * String 型日期;
- * @param format
- * 日期格式;
- * @return
- */
- public static long stringToLong(String date, String format) {
- SimpleDateFormat sdf = new SimpleDateFormat(format);
- Date dt2 = null;
- long lTime = 0;
- try {
- dt2 = sdf.parse(date);
- // 继续转换得到秒数的long型
- lTime = dt2.getTime() / 1000;
- } catch (ParseException e) {
- e.printStackTrace();
- }
- return lTime;
- }
- /**
- * 得到二个日期间的间隔日期;
- *
- * @param endTime
- * 结束时间
- * @param beginTime
- * 开始时间
- * @param isEndTime
- * 是否包含结束日期;
- * @return
- */
- public static Map<String, String> getTwoDay(String endTime,
- String beginTime, boolean isEndTime) {
- Map<String, String> result = new HashMap<String, String>();
- if ((endTime == null || endTime.equals("") || (beginTime == null || beginTime
- .equals(""))))
- return null;
- try {
- java.util.Date date = ymdSDF.parse(endTime);
- endTime = ymdSDF.format(date);
- java.util.Date mydate = ymdSDF.parse(beginTime);
- long day = (date.getTime() - mydate.getTime())
- / (24 * 60 * 60 * 1000);
- result = getDate(endTime, Integer.parseInt(day + ""), isEndTime);
- } catch (Exception e) {
- }
- return result;
- }
- /**
- * 得到二个日期间的间隔日期;
- *
- * @param endTime
- * 结束时间
- * @param beginTime
- * 开始时间
- * @param isEndTime
- * 是否包含结束日期;
- * @return
- */
- public static Integer getTwoDayInterval(String endTime, String beginTime,
- boolean isEndTime) {
- if ((endTime == null || endTime.equals("") || (beginTime == null || beginTime
- .equals(""))))
- return 0;
- long day = 0l;
- try {
- java.util.Date date = ymdSDF.parse(endTime);
- endTime = ymdSDF.format(date);
- java.util.Date mydate = ymdSDF.parse(beginTime);
- day = (date.getTime() - mydate.getTime()) / (24 * 60 * 60 * 1000);
- } catch (Exception e) {
- return 0 ;
- }
- return Integer.parseInt(day + "");
- }
- /**
- * 根据结束时间以及间隔差值,求符合要求的日期集合;
- *
- * @param endTime
- * @param interval
- * @param isEndTime
- * @return
- */
- public static Map<String, String> getDate(String endTime, Integer interval,
- boolean isEndTime) {
- Map<String, String> result = new HashMap<String, String>();
- if (interval == 0 || isEndTime) {
- if (isEndTime)
- result.put(endTime, endTime);
- }
- if (interval > 0) {
- int begin = 0;
- for (int i = begin; i < interval; i++) {
- endTime = givedTimeToBefer(endTime, DATEMM, ymd);
- result.put(endTime, endTime);
- }
- }
- return result;
- }
- }
时间: 2024-10-26 21:49:59