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com.yuweix.kuafu.core.DateUtil Maven / Gradle / Ivy
package com.yuweix.kuafu.core;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
/**
* @author yuwei
*/
public abstract class DateUtil {
/**
* yyyy-MM
*/
public static final String PATTERN_YM = "yyyy-MM";
/**
* yyyy-MM-dd
*/
public static final String PATTERN_DATE1 = "yyyy-MM-dd";
/**
* yyyy/MM/dd
*/
public static final String PATTERN_DATE2 = "yyyy/MM/dd";
/**
* yyyy年MM月dd日
*/
public static final String PATTERN_DATE3 = "yyyy年MM月dd日";
/**
* yyyyMMdd
*/
public static final String PATTERN_DATE4 = "yyyyMMdd";
/**
* HH:mm
*/
public static final String PATTERN_TIME1 = "HH:mm";
/**
* HH:mm:ss
*/
public static final String PATTERN_TIME2 = "HH:mm:ss";
/**
* yyyy-MM-dd'T'HH:mm:ss
*/
public static final String PATTERN_DATE_TIME1 = "yyyy-MM-dd'T'HH:mm:ss";
/**
* yyyy-MM-dd HH:mm:ss
*/
public static final String PATTERN_DATE_TIME2 = "yyyy-MM-dd HH:mm:ss";
/**
* yyyyMMddHHmmss
*/
public static final String PATTERN_DATE_TIME3 = "yyyyMMddHHmmss";
/**
* yyyyMMddHHmm
*/
public static final String PATTERN_DATE_TIME4 = "yyyyMMddHHmm";
/**
* yyyyMMddHH
*/
public static final String PATTERN_DATE_TIME5 = "yyyyMMddHH";
/**
* yyyyMMddHHmmssSSS
*/
public static final String PATTERN_DATE_TIME6 = "yyyyMMddHHmmssSSS";
/**
* yyyy-MM-dd HH:mm
*/
public static final String PATTERN_DATE_TIME7 = "yyyy-MM-dd HH:mm";
/**
* yyyy-MM-dd HH:mm:ss.SSS
*/
public static final String PATTERN_DATE_TIME8 = "yyyy-MM-dd HH:mm:ss.SSS";
/**
* 时间单位。年
*/
public static final int UNIT_YEAR = 1;
/**
* 时间单位。月
*/
public static final int UNIT_MONTH = 2;
/**
* 时间单位。周
*/
public static final int UNIT_WEEK = 3;
/**
* 时间单位。天
*/
public static final int UNIT_DAY = 4;
/**
* 时间单位。时
*/
public static final int UNIT_HOUR = 5;
/**
* 时间单位。分
*/
public static final int UNIT_MINUTE = 6;
/**
* 时间单位。秒
*/
public static final int UNIT_SECOND = 7;
/**
* 获取当前年份
* @return
*/
public static int getCurYear() {
Calendar cal = Calendar.getInstance();
return cal.get(Calendar.YEAR);
}
/**
* 按默认格式(yyyy-MM-dd)格式化日期
* @param date
* @return
*/
public static String formatDate(Date date) {
return new SimpleDateFormat(PATTERN_DATE1).format(date);
}
/**
* 按指定格式格式化日期
* @param date
* @param pattern
* @return
*/
public static String formatDate(Date date, String pattern) {
return new SimpleDateFormat(pattern).format(date);
}
/**
* 按指定格式解析日期
* @param dateStr
* @param pattern
* @return
*/
public static Date parseDate(String dateStr, String pattern) {
DateFormat df = new SimpleDateFormat(pattern);
try {
return df.parse(dateStr);
} catch (ParseException e) {
throw new RuntimeException(e);
}
}
public static Date parseDateIgnoreE(String dateStr, String pattern) {
DateFormat df = new SimpleDateFormat(pattern);
try {
return df.parse(dateStr);
} catch (ParseException e) {
return null;
}
}
/**
* 获取指定日期在指定时间长度之后的日期。
* @param date
* @param offset
* @param unit
* @return
*/
public static Date getDateOffset(Date date, int offset, int unit) {
Calendar cal = new GregorianCalendar();
cal.setTime(date);
if (offset != 0) {
switch (unit) {
case UNIT_YEAR:
cal.add(Calendar.YEAR, offset);
break;
case UNIT_MONTH:
cal.add(Calendar.MONTH, offset);
break;
case UNIT_WEEK:
cal.add(Calendar.WEEK_OF_YEAR, offset);
break;
case UNIT_DAY:
cal.add(Calendar.DAY_OF_YEAR, offset);
break;
case UNIT_HOUR:
cal.add(Calendar.HOUR_OF_DAY, offset);
break;
case UNIT_MINUTE:
cal.add(Calendar.MINUTE, offset);
break;
case UNIT_SECOND:
cal.add(Calendar.SECOND, offset);
break;
}
}
return cal.getTime();
}
/**
* 获取“年”
* @param date
* @return
*/
public static int getYear(Date date) {
Calendar cal = Calendar.getInstance();
cal.setTime(date);
return cal.get(Calendar.YEAR);
}
/**
* 获取“月”
* @param date
* @return
*/
public static int getMonth(Date date) {
Calendar cal = Calendar.getInstance();
cal.setTime(date);
return cal.get(Calendar.MONTH) + 1;
}
/**
* 获取“日”
* @param date
* @return
*/
public static int getDay(Date date) {
Calendar cal = Calendar.getInstance();
cal.setTime(date);
return cal.get(Calendar.DAY_OF_MONTH);
}
/**
* 获取“小时”
* @param date
* @return
*/
public static int getHour(Date date) {
Calendar cal = Calendar.getInstance();
cal.setTime(date);
return cal.get(Calendar.HOUR_OF_DAY);
}
/**
* 获取“分钟”
* @param date
* @return
*/
public static int getMinute(Date date) {
Calendar cal = Calendar.getInstance();
cal.setTime(date);
return cal.get(Calendar.MINUTE);
}
/**
* 获取“秒”
* @param date
* @return
*/
public static int getSecond(Date date) {
Calendar cal = Calendar.getInstance();
cal.setTime(date);
return cal.get(Calendar.SECOND);
}
/**
* 取得指定日期的第二天
* @param date
* @return
*/
public static Date getNextDay(Date date) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.add(Calendar.DAY_OF_MONTH, 1);
return calendar.getTime();
}
/**
* 取得指定日期的00:00:00.000
* @param date
* @return
*/
public static Date getStartOfDate(Date date) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.set(Calendar.HOUR_OF_DAY, 0);
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.MILLISECOND, 0);
return calendar.getTime();
}
/**
* 取得指定日期的最后一秒
* @param date
* @return
*/
public static Date getLastSecOfDate(Date date) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.set(Calendar.HOUR_OF_DAY, 23);
calendar.set(Calendar.MINUTE, 59);
calendar.set(Calendar.SECOND, 59);
return calendar.getTime();
}
/**
* 判断两个日期是否是同一天
* @param date1
* @param date2
* @return
*/
public static boolean isSameDay(Date date1, Date date2) {
int y1 = getYear(date1);
int m1 = getMonth(date1);
int d1 = getDay(date1);
int y2 = getYear(date2);
int m2 = getMonth(date2);
int d2 = getDay(date2);
return (y1 == y2) && (m1 == m2) && (d1 == d2);
}
/**
* 验证日期是否合法
* @param year
* @param month
* @param day
*/
public static void validate(int year, int month, int day) {
if (year < 1) {
throw new IllegalArgumentException("年份不能小于1");
}
if (month < 1 || month > 12) {
throw new IllegalArgumentException("月份只能取值1~12");
}
Calendar c = Calendar.getInstance();
c.set(Calendar.YEAR, year);
c.set(Calendar.MONTH, month);
c.set(Calendar.DAY_OF_MONTH, 1);
c.add(Calendar.DAY_OF_MONTH, -1);
int lastDay = c.get(Calendar.DAY_OF_MONTH);
if (day < 1 || day > lastDay) {
throw new IllegalArgumentException("日取值不能超过" + 1 + "~" + lastDay);
}
}
/**
* 计算两个日期相差的天数
* 若date1比date2小，返回正数；
* 若date1比date2大，返回负数；
* 若相等，返回0
* @param date1
* @param date2
* @return
*/
public static int getDayDiff(Date date1, Date date2) {
date1 = parseDate(formatDate(date1, PATTERN_DATE4), PATTERN_DATE4);
date2 = parseDate(formatDate(date2, PATTERN_DATE4), PATTERN_DATE4);
long dif = (date2.getTime() - date1.getTime()) / (1000L * 60 * 60 * 24);
return (int) dif;
}
// public static String showTime(Date date) {
// if (date == null) {
// return "";
// }
//
// Date now = Calendar.getInstance().getTime();
// if (isSameDay(now, date)) {
// long sec = (now.getTime() - date.getTime()) / 1000;
// if (sec < 0) {
// return "";
// }
//
// if (sec < 60) {
// /**
// * 1分钟内
// */
// return sec + "秒前";
// }
// if (sec < 60 * 60) {
// /**
// * 1小时内
// */
// int m = (int) (sec / 60);
// return m + "分钟前";
// }
// /**
// * 1天内
// */
// int h = (int) (sec / (60 * 60));
// return h + "小时前";
// }
//
// int diff = getDayDiff(getStartOfDate(date), getStartOfDate(now));
// if (diff <= 0) {
// return "";
// }
// if (diff == 1) {
// return "昨天";
// }
// if (diff < 7) {
// return diff + "天前";
// }
//
// return formatDate(date, "yyyy-MM-dd");
// }
}
