版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/yiy91/article/details/52055151
积累的日期转换工具类，会继续补充
public class DateUtils {
private static final long INTERVAL_IN_MILLISECONDS = 30 * 1000;
public static String getTimestampString(Date messageDate) {
boolean isChinese = true;
String format = null;
long messageTime = messageDate.getTime();
if (isSameDay(messageTime)) {
Calendar calendar = GregorianCalendar.getInstance();
calendar.setTime(messageDate);
int hour = calendar.get(Calendar.HOUR_OF_DAY);
format = "HH:mm";
if (hour > 17) {
if(isChinese){
format = "晚上 hh:mm";
}
}else if(hour >= 0 && hour <= 6){
if(isChinese){
format = "凌晨 hh:mm";
}
} else if (hour > 11 && hour <= 17) {
if(isChinese){
format = "下午 hh:mm";
}
} else {
if(isChinese){
format = "上午 hh:mm";
}
}
} else if (isYesterday(messageTime)) {
if(isChinese){
format = "昨天 HH:mm";
}else{
format = "MM-dd HH:mm";
}
} else {
if(isChinese){
format = "M月d日 HH:mm";
}else{
format = "MM-dd HH:mm";
}
}
if(isChinese){
return new SimpleDateFormat(format, Locale.CHINA).format(messageDate);
}else{
return new SimpleDateFormat(format, Locale.US).format(messageDate);
}
}
public static boolean isCloseEnough(long time1, long time2) {
// long time1 = date1.getTime();
// long time2 = date2.getTime();
long delta = time1 - time2;
if (delta < 0) {
delta = -delta;
}
return delta < INTERVAL_IN_MILLISECONDS;
}
public static boolean isSameDay(long inputTime) {
TimeInfo tStartAndEndTime = getTodayStartAndEndTime();
if(inputTime>tStartAndEndTime.getStartTime()&&inputTime<tStartAndEndTime.getEndTime())
return true;
return false;
}
public static boolean isYesterday(long inputTime) {
TimeInfo yStartAndEndTime = getYesterdayStartAndEndTime();
if(inputTime>yStartAndEndTime.getStartTime()&&inputTime<yStartAndEndTime.getEndTime())
return true;
return false;
}
public static Date StringToDate(String dateStr, String formatStr) {
DateFormat format = new SimpleDateFormat(formatStr);
Date date = null;
try {
date = format.parse(dateStr);
} catch (ParseException e) {
e.printStackTrace();
}
return date;
}
/**
*
* @param timeLength Millisecond
* @return
*/
public static String toTime(int timeLength) {
timeLength /= 1000;
int minute = timeLength / 60;
int hour = 0;
if (minute >= 60) {
hour = minute / 60;
minute = minute % 60;
}
int second = timeLength % 60;
// return String.format("%02d:%02d:%02d", hour, minute, second);
return String.format("%02d:%02d", minute, second);
}
/**
*
* @param timeLength second
* @return
*/
public static String toTimeBySecond(int timeLength) {
// timeLength /= 1000;
int minute = timeLength / 60;
int hour = 0;
if (minute >= 60) {
hour = minute / 60;
minute = minute % 60;
}
int second = timeLength % 60;
// return String.format("%02d:%02d:%02d", hour, minute, second);
return String.format("%02d:%02d", minute, second);
}
public static TimeInfo getYesterdayStartAndEndTime() {
Calendar calendar1 = Calendar.getInstance();
calendar1.add(Calendar.DATE, -1);
calendar1.set(Calendar.HOUR_OF_DAY, 0);
calendar1.set(Calendar.MINUTE, 0);
calendar1.set(Calendar.SECOND, 0);
calendar1.set(Calendar.MILLISECOND, 0);
Date startDate = calendar1.getTime();
long startTime = startDate.getTime();
Calendar calendar2 = Calendar.getInstance();
calendar2.add(Calendar.DATE, -1);
calendar2.set(Calendar.HOUR_OF_DAY, 23);
calendar2.set(Calendar.MINUTE, 59);
calendar2.set(Calendar.SECOND, 59);
calendar2.set(Calendar.MILLISECOND, 999);
Date endDate = calendar2.getTime();
long endTime = endDate.getTime();
TimeInfo info = new TimeInfo();
info.setStartTime(startTime);
info.setEndTime(endTime);
return info;
}
public static TimeInfo getTodayStartAndEndTime() {
Calendar calendar1 = Calendar.getInstance();
calendar1.set(Calendar.HOUR_OF_DAY, 0);
calendar1.set(Calendar.MINUTE, 0);
calendar1.set(Calendar.SECOND, 0);
calendar1.set(Calendar.MILLISECOND, 0);
Date startDate = calendar1.getTime();
long startTime = startDate.getTime();
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss S");
Calendar calendar2 = Calendar.getInstance();
calendar2.set(Calendar.HOUR_OF_DAY, 23);
calendar2.set(Calendar.MINUTE, 59);
calendar2.set(Calendar.SECOND, 59);
calendar2.set(Calendar.MILLISECOND, 999);
Date endDate = calendar2.getTime();
long endTime = endDate.getTime();
TimeInfo info = new TimeInfo();
info.setStartTime(startTime);
info.setEndTime(endTime);
return info;
}
public static TimeInfo getBeforeYesterdayStartAndEndTime() {
Calendar calendar1 = Calendar.getInstance();
calendar1.add(Calendar.DATE, -2);
calendar1.set(Calendar.HOUR_OF_DAY, 0);
calendar1.set(Calendar.MINUTE, 0);
calendar1.set(Calendar.SECOND, 0);
calendar1.set(Calendar.MILLISECOND, 0);
Date startDate = calendar1.getTime();
long startTime = startDate.getTime();
Calendar calendar2 = Calendar.getInstance();
calendar2.add(Calendar.DATE, -2);
calendar2.set(Calendar.HOUR_OF_DAY, 23);
calendar2.set(Calendar.MINUTE, 59);
calendar2.set(Calendar.SECOND, 59);
calendar2.set(Calendar.MILLISECOND, 999);
Date endDate = calendar2.getTime();
long endTime = endDate.getTime();
TimeInfo info = new TimeInfo();
info.setStartTime(startTime);
info.setEndTime(endTime);
return info;
}
/**
* endtime为今天
* @return
*/
public static TimeInfo getCurrentMonthStartAndEndTime(){
Calendar calendar1 = Calendar.getInstance();
calendar1.set(Calendar.DATE, 1);
calendar1.set(Calendar.HOUR_OF_DAY, 0);
calendar1.set(Calendar.MINUTE, 0);
calendar1.set(Calendar.SECOND, 0);
calendar1.set(Calendar.MILLISECOND, 0);
Date startDate = calendar1.getTime();
long startTime = startDate.getTime();
Calendar calendar2 = Calendar.getInstance();
// calendar2.set(Calendar.HOUR_OF_DAY, 23);
// calendar2.set(Calendar.MINUTE, 59);
// calendar2.set(Calendar.SECOND, 59);
// calendar2.set(Calendar.MILLISECOND, 999);
Date endDate = calendar2.getTime();
long endTime = endDate.getTime();
TimeInfo info = new TimeInfo();
info.setStartTime(startTime);
info.setEndTime(endTime);
return info;
}
public static TimeInfo getLastMonthStartAndEndTime(){
Calendar calendar1 = Calendar.getInstance();
calendar1.add(Calendar.MONTH, -1);
calendar1.set(Calendar.DATE, 1);
calendar1.set(Calendar.HOUR_OF_DAY, 0);
calendar1.set(Calendar.MINUTE, 0);
calendar1.set(Calendar.SECOND, 0);
calendar1.set(Calendar.MILLISECOND, 0);
Date startDate = calendar1.getTime();
long startTime = startDate.getTime();
Calendar calendar2 = Calendar.getInstance();
calendar2.add(Calendar.MONTH, -1);
calendar2.set(Calendar.DATE, 1);
calendar2.set(Calendar.HOUR_OF_DAY, 23);
calendar2.set(Calendar.MINUTE, 59);
calendar2.set(Calendar.SECOND, 59);
calendar2.set(Calendar.MILLISECOND, 999);
calendar2.roll(Calendar.DATE, -1);
Date endDate = calendar2.getTime();
long endTime = endDate.getTime();
TimeInfo info = new TimeInfo();
info.setStartTime(startTime);
info.setEndTime(endTime);
return info;
}
public static String getTimestampStr() {
return Long.toString(System.currentTimeMillis());
}
/**
* 获取当前星期几
* @return 星期几
*/
public static String getCurrentWeek(){
String week = "星期";
Calendar calendar = Calendar.getInstance();
int day = calendar.get(Calendar.DAY_OF_WEEK);
switch (day){
case Calendar.SUNDAY:
week += "日";
break;
case Calendar.MONDAY:
week += "一";
break;
case Calendar.TUESDAY:
week += "二";
break;
case Calendar.WEDNESDAY:
week += "三";
break;
case Calendar.THURSDAY:
week += "四";
break;
case Calendar.FRIDAY:
week += "五";
break;
case Calendar.SATURDAY:
week += "六";
break;
}
return week;
}
/**
* 获取当前时间
* @return HH:mm
*/
public static String getCurrentTime(){
String format = "HH:mm";
Date curDate = new Date(System.currentTimeMillis());//获取当前时间
return new SimpleDateFormat(format).format(curDate);
}
/**
* 获取当前日期
* @return yyyy-MM-dd
*/
public static String getCurrentDate(){
String format = "yyyy-MM-dd";
Date curDate = new Date(System.currentTimeMillis());//获取当前时间
return new SimpleDateFormat(format).format(curDate);
}
/**
* date转换为Format
*/
public static String converToString(Date date,String strFormat) {
SimpleDateFormat format = new SimpleDateFormat(strFormat);
return format.format(date);
}
/**
* Format转换为Date
*/
public static Date converToDate(String strDate,String strFormat) {
DateFormat format = new SimpleDateFormat(strFormat);
Date date = null;
try{
date = format.parse(strDate);
}catch (Exception e){
}
return date;
}
/**
* 获取两周内特定时间的周几
* @param time 毫秒时间
* @return 周几 下周几 x月x日
*/
public static String getWeekByTime(long time){
String strWeek = "";
Calendar calendar1 = Calendar.getInstance();
calendar1.setTimeInMillis(time);
int day = calendar1.get(Calendar.DAY_OF_WEEK);
int week = calendar1.get(Calendar.WEEK_OF_YEAR);
int curWeek = Calendar.getInstance().get(Calendar.WEEK_OF_YEAR);
int curDay = Calendar.getInstance().get(Calendar.DAY_OF_WEEK);
if (curWeek == week){
//同一周
strWeek = "周";
if (curDay == day){
return "今日";
}else if (curDay == Calendar.SUNDAY){
strWeek = "下周";
}
}else if(week == curWeek + 1){
//下周
strWeek = "下周";
if (day == Calendar.SUNDAY){
strWeek = "周";
}
}else {
//显示 x月x日
return new SimpleDateFormat("M月d日", Locale.CHINA).format(new Date(time));
}
switch (day) {
case Calendar.SUNDAY:
strWeek += "日";
break;
case Calendar.MONDAY:
strWeek += "一";
break;
case Calendar.TUESDAY:
strWeek += "二";
break;
case Calendar.WEDNESDAY:
strWeek += "三";
break;
case Calendar.THURSDAY:
strWeek += "四";
break;
case Calendar.FRIDAY:
strWeek += "五";
break;
case Calendar.SATURDAY:
strWeek += "六";
break;
}
return strWeek;
}
}/**
* 时间信息
*/
public class TimeInfo {
private long startTime;
private long endTime;
public TimeInfo() {
}
public long getStartTime() {
return this.startTime;
}
public void setStartTime(long var1) {
this.startTime = var1;
}
public long getEndTime() {
return this.endTime;
}
public void setEndTime(long var1) {
this.endTime = var1;
}
}