public class DateFormatUtils {
public static final long ONE_MINUTE = 60;
public static final long ONE_HOUR = 3600;
public static final long ONE_DAY = 86400;
public static final long ONE_MONTH = 2592000;
public static final long ONE_YEAR = 31104000;
/**
* 将当前时间转换为指定格式
*/
public static String getDate(String format) {
SimpleDateFormat simple = new SimpleDateFormat(format);
return simple.format(Calendar.getInstance().getTime());
}
/**
* 将指定的时间转换为指定的格式,若时间为空则默认为当前时间
*/
public static String getDateAndMinute(Date date) {
SimpleDateFormat simple = new SimpleDateFormat("yyyy-MM-dd HH:mm");
if (date == null) {
date = Calendar.getInstance().getTime();
}
return simple.format(date);
}
/**
* 距离今天多久
*/
public static String fromToday(Date date) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
long time = date.getTime() / 1000;
long now = new Date().getTime() / 1000;
long ago = now - time;
if (ago <= ONE_HOUR)
return ago / ONE_MINUTE + "分钟前";
else if (ago <= ONE_DAY)
return ago / ONE_HOUR + "小时" + (ago % ONE_HOUR / ONE_MINUTE)
+ "分钟前";
else if (ago <= ONE_DAY * 2)
return "昨天" + calendar.get(Calendar.HOUR_OF_DAY) + "点"
+ calendar.get(Calendar.MINUTE) + "分";
else if (ago <= ONE_DAY * 3)
return "前天" + calendar.get(Calendar.HOUR_OF_DAY) + "点"
+ calendar.get(Calendar.MINUTE) + "分";
else if (ago <= ONE_MONTH) {
long day = ago / ONE_DAY;
return day + "天前" + calendar.get(Calendar.HOUR_OF_DAY) + "点"
+ calendar.get(Calendar.MINUTE) + "分";
} else if (ago <= ONE_YEAR) {
long month = ago / ONE_MONTH;
long day = ago % ONE_MONTH / ONE_DAY;
return month + "个月" + day + "天前"
+ calendar.get(Calendar.HOUR_OF_DAY) + "点"
+ calendar.get(Calendar.MINUTE) + "分";
} else {
long year = ago / ONE_YEAR;
int month = calendar.get(Calendar.MONTH) + 1;// JANUARY which is 0 so month+1
return year + "年前" + month + "月" + calendar.get(Calendar.DATE)
+ "日";
}
}
/**
* 距离截止日期还有多长时间
*/
public static String fromDeadline(Date date) {
long deadline = date.getTime() / 1000;
long now = (new Date().getTime()) / 1000;
long remain = deadline - now;
if (remain <= ONE_HOUR)
return "只剩下" + remain / ONE_MINUTE + "分钟";
else if (remain <= ONE_DAY)
return "只剩下" + remain / ONE_HOUR + "小时"
+ (remain % ONE_HOUR / ONE_MINUTE) + "分钟";
else {
long day = remain / ONE_DAY;
long hour = remain % ONE_DAY / ONE_HOUR;
long minute = remain % ONE_DAY % ONE_HOUR / ONE_MINUTE;
return "只剩下" + day + "天" + hour + "小时" + minute + "分钟";
}
}
//获取年
public static int getYearInt() {
return Calendar.getInstance().get(Calendar.YEAR);
}
//获取月
public static int getMonthInt() {
return Calendar.getInstance().get(Calendar.MONTH);
}
//获取日
public static int getDayInt() {
return Calendar.getInstance().get(Calendar.DATE);
}
//获取小时
public static int get24Hour() {
return Calendar.getInstance().get(Calendar.HOUR_OF_DAY);
}
//获取分钟
public static int getMinute() {
return Calendar.getInstance().get(Calendar.MINUTE);
}
//获取秒
public static int getSecond() {
return Calendar.getInstance().get(Calendar.SECOND);
}
/**
* 获取增加小时和分钟后的时间
*/
public static int[] getNowTimeAdd(int newHour, int newMinute) {
int[] time = new int[2];
time[0] = get24Hour() + newHour + (getMinute() + newMinute) / 60;
time[1] = (getMinute() + newMinute) % 60;
return time;
}
/**
* 保留 两位小数
* 0 占位符,没有则填补为0
* # 没有则不显示
*/
public static String getLangweiStr(String s) {
if (s == null || s.isEmpty()) {
return "0.00";
}
DecimalFormat df = new DecimalFormat("#0.00");
Double d = Double.parseDouble(s);
return (df.format(d));
}
/**
* 保留 两位小数
*/
public static String getLangweiStr(Double d) {
DecimalFormat df = new DecimalFormat("#0.00");
return (df.format(d));
}
/**
* 获取当前的小时:分钟
*/
public static String getCurHourAndMin() {
SimpleDateFormat format = new SimpleDateFormat("HH:mm");
return format.format(Calendar.getInstance().getTime());
}
/**
* 将指定时间转换为指定格式
*/
public static String getTime(long time, String timeFormat) {
SimpleDateFormat format = new SimpleDateFormat(timeFormat);
return format.format(new Date(time));
}
/*
* 将时间戳转换为时间
*/
public static String stampToDate(String s) {
return stampToDate(s, true);
}
/**
* 将时间戳转换为时间
*/
public static String stampToDate(String s, boolean ismills) {
String format = "yyyy-MM-dd HH:mm";
if (ismills)
format += ":ss";
String res;
SimpleDateFormat simpleDateFormat = new SimpleDateFormat(format);
long lt = new Long(s);
Date date = new Date(lt);
res = simpleDateFormat.format(date);
return res;
}
/**
* 将时间戳转换为时间
*/
public static String stampToDate(long stamp) {
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date date = new Date(stamp);
return simpleDateFormat.format(date);
}
/**
* 将时间戳转换为年月日
*/
public static String stampToDateYMD(long time) {
String format = "yyyy-MM-dd";
String res;
SimpleDateFormat simpleDateFormat = new SimpleDateFormat(format);
Date date = new Date(time);
long ss = date.getTime();
res = simpleDateFormat.format(date);
return res;
}
/**
* 计算时间差
*
* @param startTime
* @param endTime
* @return [0]天 [1] 小时数 [2] 分钟数 [3] 秒数
*/
public static long[] getTimeExpend(long startTime, long endTime) {
long[] timediff = {0, 0, 0, 0};
long longExpend = endTime - startTime; //获取时间差
timediff[0] = longExpend / (24 * 60 * 60 * 1000); //根据时间差来计算天数
timediff[1] = (longExpend - timediff[0] * (24 * 60 * 60 * 1000)) / (60 * 60 * 1000); //根据时间差来计算小时数
timediff[2] = (longExpend - timediff[0] * (24 * 60 * 60 * 1000) - timediff[1] * (60 * 60 * 1000)) / (60 * 1000); //根据时间差来计算分钟数
timediff[3] = (longExpend - timediff[0] * (24 * 60 * 60 * 1000) - timediff[1] * (60 * 60 * 1000) - timediff[2] * (60 * 1000)) / 1000; //根据时间差来计算秒数
return timediff;
}
/**
* 转换时间日期格式字符串为long型
*/
public static Long convertTimeToLong(String time, SimpleDateFormat sdf) {
Date date = null;
try {
date = sdf.parse(time);
return date.getTime();
} catch (Exception e) {
e.printStackTrace();
return 0L;
}
}
/**
* 获取指定月份的天数
*
* @param year
* @param month
* @return
*/
public static int getDaysByYearMonth(int year, int month) {
Calendar a = Calendar.getInstance();
a.set(Calendar.YEAR, year);
a.set(Calendar.MONTH, month - 1);
a.set(Calendar.DATE, 1);
a.roll(Calendar.DATE, -1);
int maxDate = a.get(Calendar.DATE);
return maxDate;
}
/**
* 获取指定年月对象
*
* @param year
* @param month
* @return
*/
public static Calendar getCalendarByYearMonth(int year, int month) {
Calendar a = Calendar.getInstance();
a.set(Calendar.YEAR, year);
a.set(Calendar.MONTH, month - 1);
a.set(Calendar.DATE, 1);
return a;
}
/**
* 指定今天的时间对象
*
* @param hours
* @param minute
* @return
*/
public static Calendar getCalendarByHourMinute(int hours, int minute) {
Calendar a = Calendar.getInstance();
a.set(Calendar.HOUR_OF_DAY, hours);
a.set(Calendar.MINUTE, minute);
a.set(Calendar.SECOND, 0);
a.set(Calendar.MILLISECOND, 0);
return a;
}
/**
* 获取累加天数后的日期
*
* @param date
* @param day
* @return
*/
public static Date getDateBy(Date date, int day) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.add(Calendar.DATE, day);
return calendar.getTime();
}
/**
* 获取下周, 周一和周天的日期
* @param time
* @param format
* @return
*/
public static Map<String, String> getNextWeek(long time, String format) {
Map<String, String> dateMap = new HashMap<String, String>();
SimpleDateFormat sdf = new SimpleDateFormat(format);
Calendar cal1 = Calendar.getInstance();
Calendar cal2 = Calendar.getInstance();
cal1.setTime(new Date(time));
cal2.setTime(new Date(time));
int dayWeek = cal1.get(Calendar.DAY_OF_WEEK);// 获得当前日期是一个星期的第几天
if (dayWeek == 1) {
cal1.add(Calendar.DAY_OF_MONTH, 1);
cal2.add(Calendar.DAY_OF_MONTH, 7);
} else {
cal1.add(Calendar.DAY_OF_MONTH, 1 - dayWeek + 8);
cal2.add(Calendar.DAY_OF_MONTH, 1 - dayWeek + 14);
}
String nextMonday = sdf.format(cal1.getTime());
String nextSunday = sdf.format(cal2.getTime());
dateMap.put("nextMonday", nextMonday);
dateMap.put("nextSunday", nextSunday);
return dateMap;
}
}
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