代码语言：javascript
复制import java.sql.Timestamp;
import java.text.ParseException;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.*;
/**
* <p>时间工具类</p>
*
* @author : LiYu
* @date : 2020-10-23 15:22
**/
public class TimeUtils {
/**
* 获取当天开始时间
* @return
*/
public static Date getDayBegin(){
Calendar cal=Calendar.getInstance();
cal.set(Calendar.HOUR_OF_DAY, 0);//0点
cal.set(Calendar.MINUTE, 0);//0分
cal.set(Calendar.SECOND, 0);//0秒
cal.set(Calendar.MILLISECOND, 0);//0毫秒
return cal.getTime();
}
/**
* 获取当天结束时间
* @return
*/
public static Date getDayEnd(){
Calendar cal=Calendar.getInstance();
cal.set(Calendar.HOUR_OF_DAY, 23);//23点
cal.set(Calendar.MINUTE, 59);//59分
cal.set(Calendar.SECOND, 59);//59秒
return cal.getTime();
}
/**
* 获取昨天开始时间
* @return
*/
public static Date getBeginDayOfYesterday(){
Calendar cal=Calendar.getInstance();
cal.setTime(getDayBegin());//当天开始时间
cal.add(Calendar.DAY_OF_MONTH, -1);//当天月份天数减1
return cal.getTime();
}
/**
* 获取昨天结束时间
* @return
*/
public static Date getEndDayOfYesterday(){
Calendar cal=Calendar.getInstance();
cal.setTime(getDayEnd());//当天结束时间
cal.add(Calendar.DAY_OF_MONTH, -1);//当天月份天数减1
return cal.getTime();
}
/**
* 获取明天开始时间
* @return
*/
public static Date getBeginDayOfTomorrow(){
Calendar cal=Calendar.getInstance();
cal.setTime(getDayBegin());//当天开始时间
cal.add(Calendar.DAY_OF_MONTH, 1);//当天月份天数加1
return cal.getTime();
}
/**
* 获取明天结束时间
* @return
*/
public static Date getEndDayOfTomorrow(){
Calendar cal=Calendar.getInstance();
cal.setTime(getDayEnd());//当天结束时间
cal.add(Calendar.DAY_OF_MONTH, 1);//当天月份天数加1
return cal.getTime();
}
/**
* 获取某个日期的开始时间
* @param d
* @return
*/
public static Timestamp getDayStartTime(Date d) {
Calendar calendar=Calendar.getInstance();
if(null!=d){
calendar.setTime(d);
}
calendar.set(calendar.get(Calendar.YEAR),
calendar.get(Calendar.MONTH),
calendar.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
calendar.set(Calendar.MILLISECOND, 0);
return new Timestamp(calendar.getTimeInMillis());
}
/**
* 获取某个日期的结束时间
* @param d
* @return
*/
public static Timestamp getDayEndTime(Date d) {
Calendar calendar=Calendar.getInstance();
if(null!=d){
calendar.setTime(d);
}
calendar.set(calendar.get(Calendar.YEAR),
calendar.get(Calendar.MONTH),
calendar.get(Calendar.DAY_OF_MONTH), 23, 59, 59);
calendar.set(Calendar.MILLISECOND, 999);
return new Timestamp(calendar.getTimeInMillis());
}
/**
* 获取本周的开始时间
* @return
*/
@SuppressWarnings("unused")
public static Date getBeginDayOfWeek(){
Date date=new Date();
if(date==null){
return null;
}
Calendar cal=Calendar.getInstance();
cal.setTime(date);
int dayOfWeek=cal.get(Calendar.DAY_OF_WEEK);
if(dayOfWeek==1){
dayOfWeek =7;
}
cal.add(Calendar.DATE, 2-dayOfWeek);
return getDayStartTime(cal.getTime());
}
/**
* 获取本周的结束时间
* @return
*/
public static Date getEndDayOfWeek(){
Calendar cal=Calendar.getInstance();
cal.setTime(getBeginDayOfWeek());
cal.add(Calendar.DAY_OF_WEEK, 6);
Date weekEndSta = cal.getTime();
return getDayEndTime(weekEndSta);
}
/**
* 获取上周开始时间
*/
@SuppressWarnings("unused")
public static Date getBeginDayOfLastWeek() {
Date date=new Date();
if (date==null) {
return null;
}
Calendar cal=Calendar.getInstance();
cal.setTime(date);
int dayofweek=cal.get(Calendar.DAY_OF_WEEK);
if (dayofweek==1) {
dayofweek =7;
}
cal.add(Calendar.DATE, 2-dayofweek-7);
return getDayStartTime(cal.getTime());
}
/**
* 获取上周的结束时间
* @return
*/
public static Date getEndDayOfLastWeek(){
Calendar cal=Calendar.getInstance();
cal.setTime(getBeginDayOfLastWeek());
cal.add(Calendar.DAY_OF_WEEK, 6);
Date weekEndSta = cal.getTime();
return getDayEndTime(weekEndSta);
}
/**
* 获取今年是哪一年
* @return
*/
public static Integer getNowYear(){
Date date = new Date();
GregorianCalendar gc=(GregorianCalendar)Calendar.getInstance();
gc.setTime(date);
return Integer.valueOf(gc.get(1));
}
/**
* 获取本月是哪一月
* @return
*/
public static int getNowMonth() {
Date date = new Date();
GregorianCalendar gc=(GregorianCalendar)Calendar.getInstance();
gc.setTime(date);
return gc.get(2) 1;
}
/**
* 获取本月的开始时间
* @return
*/
public static Date getBeginDayOfMonth() {
Calendar calendar=Calendar.getInstance();
calendar.set(getNowYear(), getNowMonth()-1, 1);
return getDayStartTime(calendar.getTime());
}
/**
* 获取本月的结束时间
* @return
*/
public static Date getEndDayOfMonth() {
Calendar calendar=Calendar.getInstance();
calendar.set(getNowYear(), getNowMonth()-1, 1);
int day = calendar.getActualMaximum(5);
calendar.set(getNowYear(), getNowMonth()-1, day);
return getDayEndTime(calendar.getTime());
}
/**
* 获取上月的开始时间
* @return
*/
public static Date getBeginDayOfLastMonth() {
Calendar calendar=Calendar.getInstance();
calendar.set(getNowYear(), getNowMonth()-2, 1);
return getDayStartTime(calendar.getTime());
}
/**
* 获取上月的结束时间
* @return
*/
public static Date getEndDayOfLastMonth() {
Calendar calendar=Calendar.getInstance();
calendar.set(getNowYear(), getNowMonth()-2, 1);
int day = calendar.getActualMaximum(5);
calendar.set(getNowYear(), getNowMonth()-2, day);
return getDayEndTime(calendar.getTime());
}
/**
* 获取本年的开始时间
* @return
*/
public static java.util.Date getBeginDayOfYear() {
Calendar cal=Calendar.getInstance();
cal.set(Calendar.YEAR, getNowYear());
cal.set(Calendar.MONTH, Calendar.JANUARY);
cal.set(Calendar.DATE, 1);
return getDayStartTime(cal.getTime());
}
/**
* 获取本年的结束时间
* @return
*/
public static java.util.Date getEndDayOfYear() {
Calendar cal = Calendar.getInstance();
cal.set(Calendar.YEAR, getNowYear());
cal.set(Calendar.MONTH, Calendar.DECEMBER);
cal.set(Calendar.DATE, 31);
return getDayEndTime(cal.getTime());
}
/**
* 两个日期相减得到的天数
* @param beginDate
* @param endDate
* @return
*/
public static int getDiffDays(Date beginDate, Date endDate) {
if(beginDate==null||endDate==null) {
throw new IllegalArgumentException("getDiffDays param is null!");
}
long diff=(endDate.getTime()-beginDate.getTime())/(1000*60*60*24);
int days = new Long(diff).intValue();
return days;
}
/**
* 两个日期相减得到的毫秒数
* @param beginDate
* @param endDate
* @return
*/
public static long dateDiff(Date beginDate, Date endDate) {
long date1ms=beginDate.getTime();
long date2ms=endDate.getTime();
return date2ms-date1ms;
}
/**
* 获取两个日期中的最大日起
* @param beginDate
* @param endDate
* @return
*/
public static Date max(Date beginDate, Date endDate) {
if(beginDate==null) {
return endDate;
}
if(endDate==null) {
return beginDate;
}
if(beginDate.after(endDate)) {//beginDate日期大于endDate
return beginDate;
}
return endDate;
}
/**
* 获取两个日期中的最小日期
* @param beginDate
* @param endDate
* @return
*/
public static Date min(Date beginDate, Date endDate) {
if(beginDate==null) {
return endDate;
}
if(endDate==null) {
return beginDate;
}
if(beginDate.after(endDate)) {
return endDate;
}
return beginDate;
}
/**
* 获取某月该季度的第一个月
* @param date
* @return
*/
public static Date getFirstSeasonDate(Date date) {
final int[] SEASON={ 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4 };
Calendar cal=Calendar.getInstance();
cal.setTime(date);
int sean = SEASON[cal.get(Calendar.MONTH)];
cal.set(Calendar.MONTH, sean*3-3);
return cal.getTime();
}
/**
* 返回某个日期下几天的日期
* @param date
* @param i
* @return
*/
public static Date getNextDay(Date date, int i) {
Calendar cal=new GregorianCalendar();
cal.setTime(date);
cal.set(Calendar.DATE,cal.get(Calendar.DATE) i);
return cal.getTime();
}
/**
* 返回某个日期前几天的日期
* @param date
* @param i
* @return
*/
public static Date getFrontDay(Date date, int i) {
Calendar cal=new GregorianCalendar();
cal.setTime(date);
cal.set(Calendar.DATE, cal.get(Calendar.DATE)-i);
return cal.getTime();
}
/**
* 获取某年某月按天切片日期集合（某个月间隔多少天的日期集合）
* @param beginYear
* @param beginMonth
* @param k
* @return
*/
@SuppressWarnings({ "unchecked", "rawtypes" })
public static List getTimeList(int beginYear, int beginMonth, int k) {
List list = new ArrayList();
Calendar begincal=new GregorianCalendar(beginYear,beginMonth, 1);
int max = begincal.getActualMaximum(Calendar.DATE);
for (int i = 1; i < max; i = i k) {
list.add(begincal.getTime());
begincal.add(Calendar.DATE, k);
}
begincal = new GregorianCalendar(beginYear, beginMonth, max);
list.add(begincal.getTime());
return list;
}
/**
* 获取某年某月到某年某月按天的切片日期集合（间隔天数的集合）
* @param beginYear
* @param beginMonth
* @param endYear
* @param endMonth
* @param k
* @return
*/
@SuppressWarnings({ "rawtypes", "unchecked" })
public static List getTimeList(int beginYear,int beginMonth,int endYear,int endMonth, int k) {
List list = new ArrayList();
if (beginYear==endYear){
for(int j=beginMonth;j<=endMonth;j ){
list.add(getTimeList(beginYear,j,k));
}
}else{
{
for(int j=beginMonth;j<12;j ){
list.add(getTimeList(beginYear,j,k));
}
for(int i=beginYear 1;i<endYear;i ) {
for (int j=0; j<12; j ) {
list.add(getTimeList(i,j,k));
}
}
for (int j=0;j <= endMonth; j ) {
list.add(getTimeList(endYear, j, k));
}
}
}
return list;
}
//=================================时间格式转换==========================
/**
* date类型进行格式化输出（返回类型：String）
* @param date
* @return
*/
public static String dateFormat(Date date) {
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String dateString = formatter.format(date);
return dateString;
}
/**
* 将"2015-08-31 21:08:06"型字符串转化为Date
* @param str
* @return
* @throws ParseException
*/
public static Date StringToDate(String str) throws ParseException{
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date date = (Date) formatter.parse(str);
return date;
}
/**
* 将CST时间类型字符串进行格式化输出
* @param str
* @return
* @throws ParseException
*/
public static String CSTFormat(String str) throws ParseException{
SimpleDateFormat formatter = new SimpleDateFormat("EEE MMM dd HH:mm:ss zzz yyyy", Locale.US);
Date date = (Date) formatter.parse(str);
return dateFormat(date);
}
/**
* 将long类型转化为Date
* @param str
* @return
* @throws ParseException
*/
public static Date LongToDare(long str) throws ParseException{
return new Date(str * 1000);
}
//====================================其他常见日期操作方法======================
/**
* 判断当前日期是否在[startDate, endDate]区间
*
* @param startDate 开始日期
* @param endDate 结束日期
* @author jqlin
* @return
*/
public static boolean isEffectiveDate(Date startDate, Date endDate){
if(startDate == null || endDate == null){
return false;
}
long currentTime = new Date().getTime();
if(currentTime >= startDate.getTime()
&& currentTime <= endDate.getTime()){
return true;
}
return false;
}
/**
* 得到二个日期间的间隔天数
* @param secondString：后一个日期
* @param firstString：前一个日期
* @return
*/
public static String getTwoDay(String secondString, String firstString) {
SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd");
long day = 0;
try {
java.util.Date secondTime = myFormatter.parse(secondString);
java.util.Date firstTime = myFormatter.parse(firstString);
day = (secondTime.getTime() - firstTime.getTime()) / (24 * 60 * 60 * 1000);
} catch (Exception e) {
return "";
}
return day "";
}
/**
* 时间前推或后推分钟,其中JJ表示分钟.
* @param StringTime：时间
* @param minute：分钟（有正负之分）
* @return
*/
public static String getPreTime(String StringTime, String minute) {
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String mydate1 = "";
try {
Date date1 = format.parse(StringTime);
long Time = (date1.getTime() / 1000) Integer.parseInt(minute) * 60;
date1.setTime(Time * 1000);
mydate1 = format.format(date1);
} catch (Exception e) {
return "";
}
return mydate1;
}
/**
* 将短时间格式字符串转换为时间 yyyy-MM-dd
*
* @param strDate
* @return
*/
public static Date strToDate(String strDate) {
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
ParsePosition pos = new ParsePosition(0);
Date strtodate = formatter.parse(strDate, pos);
return strtodate;
}
/**
* 得到一个时间延后或前移几天的时间
* @param nowdate：时间
* @param delay：前移或后延的天数
* @return
*/
public static String getNextDay(String nowdate, String delay) {
try{
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
String mdate = "";
Date d = strToDate(nowdate);
long myTime = (d.getTime() / 1000) Integer.parseInt(delay) * 24 * 60 * 60;
d.setTime(myTime * 1000);
mdate = format.format(d);
return mdate;
}catch(Exception e){
return "";
}
}
/**
* 判断是否闰年
* @param ddate
* @return
*/
public static boolean isLeapYear(String ddate) {
/**
* 详细设计： 1.被400整除是闰年，否则： 2.不能被4整除则不是闰年 3.能被4整除同时不能被100整除则是闰年
* 3.能被4整除同时能被100整除则不是闰年
*/
Date d = strToDate(ddate);
GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();
gc.setTime(d);
int year = gc.get(Calendar.YEAR);
if ((year % 400) == 0){
return true;
}else if ((year % 4) == 0){
if ((year % 100) == 0){
return false;
}else{
return true;
}
}else{
return false;
}
}
/**
* 返回美国时间格式
* @param str
* @return
*/
public static String getEDate(String str) {
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
ParsePosition pos = new ParsePosition(0);
Date strtodate = formatter.parse(str, pos);
String j = strtodate.toString();
String[] k = j.split(" ");
return k[2] k[1].toUpperCase() k[5].substring(2, 4);
}
/**
* 判断二个时间是否在同一个周
* @param date1
* @param date2
* @return
*/
public static boolean isSameWeekDates(Date date1, Date date2) {
Calendar cal1 = Calendar.getInstance();
Calendar cal2 = Calendar.getInstance();
cal1.setTime(date1);
cal2.setTime(date2);
int subYear = cal1.get(Calendar.YEAR) - cal2.get(Calendar.YEAR);
if(0 == subYear) {
if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR)){
return true;
}
}else if(1 == subYear && 11 == cal2.get(Calendar.MONTH)) {
// 如果12月的最后一周横跨来年第一周的话则最后一周即算做来年的第一周
if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR)){
return true;
}
}else if (-1 == subYear && 11 == cal1.get(Calendar.MONTH)) {
if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR)){
return true;
}
}
return false;
}
/**
* 产生周序列,即得到当前时间所在的年度是第几周
* @return
*/
public static String getSeqWeek() {
Calendar c = Calendar.getInstance(Locale.CHINA);
String week = Integer.toString(c.get(Calendar.WEEK_OF_YEAR));
if (week.length() == 1)
week = "0" week;
String year = Integer.toString(c.get(Calendar.YEAR));
return year "年第" week "周";
}
/**
* 获得一个日期所在的周的星期几的日期，如要找出2002年2月3日所在周的星期一是几号
* @param sdate：日期
* @param num：星期几（星期天是一周的第一天）
* @return
*/
public static String getWeek(String sdate, String num) {
// 再转换为时间
Date dd = strToDate(sdate);
Calendar c = Calendar.getInstance();
c.setTime(dd);
if (num.equals("1")) // 返回星期一所在的日期
c.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
else if (num.equals("2")) // 返回星期二所在的日期
c.set(Calendar.DAY_OF_WEEK, Calendar.TUESDAY);
else if (num.equals("3")) // 返回星期三所在的日期
c.set(Calendar.DAY_OF_WEEK, Calendar.WEDNESDAY);
else if (num.equals("4")) // 返回星期四所在的日期
c.set(Calendar.DAY_OF_WEEK, Calendar.THURSDAY);
else if (num.equals("5")) // 返回星期五所在的日期
c.set(Calendar.DAY_OF_WEEK, Calendar.FRIDAY);
else if (num.equals("6")) // 返回星期六所在的日期
c.set(Calendar.DAY_OF_WEEK, Calendar.SATURDAY);
else if (num.equals("0")) // 返回星期日所在的日期
c.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);
return new SimpleDateFormat("yyyy-MM-dd").format(c.getTime());
}
/**
* 根据一个日期，返回是星期几的字符串
* @param sdate
* @return
*/
public static String getWeek(String sdate) {
// 再转换为时间
Date date = strToDate(sdate);
Calendar c = Calendar.getInstance();
c.setTime(date);
// int hour=c.get(Calendar.DAY_OF_WEEK);
// hour中存的就是星期几了，其范围 1~7
// 1=星期日 7=星期六，其他类推
return new SimpleDateFormat("EEEE").format(c.getTime());
}
/**
* 根据一个日期，返回是星期几的字符串
* @param sdate
* @return
*/
public static String getWeekStr(String sdate){
String str = "";
str = getWeek(sdate);
if("1".equals(str)){
str = "星期日";
}else if("2".equals(str)){
str = "星期一";
}else if("3".equals(str)){
str = "星期二";
}else if("4".equals(str)){
str = "星期三";
}else if("5".equals(str)){
str = "星期四";
}else if("6".equals(str)){
str = "星期五";
}else if("7".equals(str)){
str = "星期六";
}
return str;
}
/**
* 两个时间之间的天数
* @param date1
* @param date2
* @return
*/
public static long getDays(String date1, String date2) {
if (date1 == null || date1.equals(""))
return 0;
if (date2 == null || date2.equals(""))
return 0;
// 转换为标准时间
SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd");
java.util.Date date = null;
java.util.Date mydate = null;
try {
date = myFormatter.parse(date1);
mydate = myFormatter.parse(date2);
} catch (Exception e) {
}
long day = (date.getTime() - mydate.getTime()) / (24 * 60 * 60 * 1000);
return day;
}
/**
* 形成如下的日历 ， 根据传入的一个时间返回一个结构 星期日 星期一 星期二 星期三 星期四 星期五 星期六 下面是当月的各个时间
* 此函数返回该日历第一行星期日所在的日期
* @param sdate
* @return
*/
public static String getNowMonth(String sdate) {
// 取该时间所在月的一号
sdate = sdate.substring(0, 8) "01";
// 得到这个月的1号是星期几
Date date = strToDate(sdate);
Calendar c = Calendar.getInstance();
c.setTime(date);
int u = c.get(Calendar.DAY_OF_WEEK);
String newday = getNextDay(sdate, (1 - u) "");
return newday;
}
/**
* 根据用户传入的时间表示格式，返回当前时间的格式 如果是yyyyMMdd，注意字母y不能大写
* @param sformat
* @return
*/
public static String getUserDate(String sformat) {
Date currentTime = new Date();
SimpleDateFormat formatter = new SimpleDateFormat(sformat);
String dateString = formatter.format(currentTime);
return dateString;
}
/**
* 返回一个i位数的随机数
* @param i
* @return
*/
public static String getRandom(int i) {
Random jjj = new Random();
// int suiJiShu = jjj.nextInt(9);
if (i == 0)
return "";
String jj = "";
for (int k = 0; k < i; k ) {
jj = jj jjj.nextInt(9);
}
return jj;
}
/**
* 取得数据库主键 生成格式为yyyymmddhhmmss k位随机数
* @param k：表示是取几位随机数，可以自己定
* @return
*/
public static String getNo(int k) {
return getUserDate("yyyyMMddhhmmss") getRandom(k);
}
public static Map<String,String> timeDifference(Date now, Date date){
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
long l=now.getTime()-date.getTime();
long day=l/(24*60*60*1000);
long hour=(l/(60*60*1000)-day*24);
long min=((l/(60*1000))-day*24*60-hour*60);
long s=(l/1000-day*24*60*60-hour*60*60-min*60);
System.out.println("" String.valueOf(day) "天" String.valueOf(hour) "小时" String.valueOf(min) "分" String.valueOf(s) "秒");
Map<String,String> map = new HashMap<>();
map.put("day",String.valueOf(day));
map.put("hour",String.valueOf(hour));
map.put("min",String.valueOf(min));
map.put("s",String.valueOf(s));
return map;
}
}
