DateUtils.java
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/*
* Copyright 2014 Qunar.com All right reserved. This software is the
* confidential and proprietary information of Qunar.com ("Confidential
* Information"). You shall not disclose such Confidential Information and shall
* use it only in accordance with the terms of the license agreement you entered
* into with Qunar.com.
*/
package com.canrd.patent.common.utils;
import org.apache.commons.lang.StringUtils;
import org.joda.time.DateTime;
import org.joda.time.LocalTime;
import org.joda.time.Period;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.concurrent.TimeUnit;
/**
* 实现描述：日期处理工具
*
* @author chaoyi.he
* @version v1.0.0
* @see
* @since 2014年8月13日 上午10:48:36
*/
public abstract class DateUtils {
public static String now() {
return format(new Date());
}
public static String format(Date time) {
return format(time, "yyyy-MM-dd HH:mm:ss");
}
public static String formatDate(Date date) {
return format(date, "yyyy-MM-dd");
}
public static String format(Date time, String pattern) {
return new DateTime(time).toString(pattern);
}
public static Date parse(String time) {
return DateTime.parse(time.replace(' ', 'T')).toDate();
}
public static Date parseTime(String time) {
if (time.startsWith("24:00"))
return new DateTime().plusDays(1).withTimeAtStartOfDay().minusMillis(1).toDate();
return LocalTime.parse(time).toDateTimeToday().toDate();
}
public static String formatToHMS(Date start, Date finish) {
Period period = new Period(start.getTime(), finish.getTime());
return String.format("%02d:%02d:%02d.%03d", period.toStandardHours().getHours(), period.getMinutes(),
period.getSeconds(), period.getMillis());
}
public static String formatToHMS(int millis) {
Period period = new Period(millis);
return String.format("%02d:%02d:%02d.%03d", period.toStandardHours().getHours(), period.getMinutes(),
period.getSeconds(), period.getMillis());
}
public static String formatToMS(Date start, Date finish) {
Period period = new Period(start.getTime(), finish.getTime());
return String.format("%02d:%02d.%03d", period.toStandardMinutes().getMinutes(), period.getSeconds(),
period.getMillis());
}
public static String formatToMS(int millis) {
Period period = new Period(millis);
return String.format("%02d:%02d.%03d", period.toStandardMinutes().getMinutes(), period.getSeconds(),
period.getMillis());
}
public static int dateRange(Date startDate, Date endDate) {
Period period = new Period(new DateTime(startDate).withTimeAtStartOfDay(),
new DateTime(endDate).withTimeAtStartOfDay());
return period.toStandardDays().getDays() + 1;
}
public static int minutesAgo(Date time) {
Period period = new Period(new DateTime(time), new DateTime());
return period.toStandardMinutes().getMinutes();
}
/**
* 将日期或者时间字符串转化为日期对象
*
* @param date 日期字符串
* @param pattern 格式字符串</br> yyyy-MM-DD, yyyy/MM/DD, yyyyMMdd</br> yyyy-MM-dd-HH:mm:ss, yyyy-MM-dd HH:mm:ss
* 格式字符串可选字符："GyMdkHmsSEDFwWahKzZ"
* @return Date
* @see java.text.DateFormatSymbols
*/
public static Date convertDate(String date, String pattern) {
try {
if (StringUtils.isEmpty(pattern) || StringUtils.isEmpty(date)) {
String msg = "the date or pattern is empty.";
throw new IllegalArgumentException(msg);
}
SimpleDateFormat df = new SimpleDateFormat(pattern.trim());
return df.parse(date.trim());
} catch (Exception e) {
throw new IllegalArgumentException("Method===DateUtils.convertDate error!", e);
}
}
public static int diffDate(Date date1, Date date2) {
return (int) ((date1.getTime() - date2.getTime()) / TimeUnit.DAYS.toMillis(1L));
}
public static Date beforeDay(Integer c) {
Calendar calendar = Calendar.getInstance();// 此时打印它获取的是系统当前时间
calendar.add(Calendar.DATE, -c); // 得到前一天
String yestedayDate = new SimpleDateFormat("yyyy-MM-dd").format(calendar.getTime());
return convertDate(yestedayDate, "yyyy-MM-dd");
}
public static Date beforeTime(Integer c) {
Calendar calendar = Calendar.getInstance();// 此时打印它获取的是系统当前时间
calendar.add(Calendar.DATE, -c); // 得到前一天
String yestedayDate = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(calendar.getTime());
return convertDate(yestedayDate, "yyyy-MM-dd HH:mm:ss");
}
public static String todayDate() {
return format(today(), "yyyy-MM-dd");
}
public static String nextDays(Integer c) {
return format(nextDay(c), "yyyy-MM-dd");
}
public static Date today() {
return new Date();
}
public static Date nextDay(Integer c) {
Calendar calendar = Calendar.getInstance();// 此时打印它获取的是系统当前时间
calendar.add(Calendar.DATE, c); // 得到前一天
String yestedayDate = new SimpleDateFormat("yyyy-MM-dd").format(calendar.getTime());
return convertDate(yestedayDate, "yyyy-MM-dd");
}
public static Date nextDayByOneDay(Date date, Integer c) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
int day = calendar.get(Calendar.DATE);
calendar.set(Calendar.DATE, day + c);
return calendar.getTime();
}
public static String nextDay(Date date, int c) {
return format(nextDayByOneDay(date, c), "yyyy-MM-dd");
}
/**
* 获得指定日期的前一天
* @param specifiedDay
* @return
* @throws Exception
*/
public static String dayBefore(String specifiedDay) {
return DateTime.parse("yyyy-MM-dd").minusDays(1).toString("yyyy-MM-dd");
}
public static String dayBefore(Date d) {
return dayBefore(new SimpleDateFormat("yyyy-MM-dd").format(d));
}
/**
* 返回日期是星期几(整形数字)，按照国内的记法
* 例如:星期一是1,星期二是2
* @return
*/
public static int dayOfWeek(Date d) {
Calendar cal = Calendar.getInstance();
cal.setTime(d);
int w = cal.get(Calendar.DAY_OF_WEEK) - 1;
if (w == 0) {
w = 7;
}
return w;
}
/**
* 返回日期是星期几(中文)，按照国内的记法
*
* @return
*/
public static String weekOfDate(Date dt) {
String[] weekDays = { "星期一", "星期二", "星期三", "星期四", "星期五", "星期六", "星期日" };
Calendar cal = Calendar.getInstance();
cal.setTime(dt);
int w = cal.get(Calendar.DAY_OF_WEEK) - 1;
if (w == 0) {
w = 7;
}
return weekDays[w - 1];
}
}