xiaoshi-weixinback/src/main/java/com/example/xiaoshiweixinback/business/utils/DateUtil.java

/**
 * Copyright (c) 2015-2016, Chill Zhuang 庄骞 (smallchill@163.com).
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.xiaoshiweixinback.business.utils;

import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.time.DateFormatUtils;
import org.apache.commons.lang3.time.DateUtils;

import java.sql.Timestamp;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.ZonedDateTime;
import java.time.temporal.ChronoUnit;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

public class DateUtil {



	/**
	 * 获取YYYY格式
	 *
	 * @return
	 */

	public static String getYear() {
		return formatDate(new Date(), "yyyy");
	}


	/**
	 * 获取YYYY格式
	 *
	 * @return
	 */

	public static String getYear(Date date) {
		return formatDate(date, "yyyy");
	}

	public static String getCurrentServerDate(String format) {
		return formatDate(new Date(), format);
	}
	

	/**
	 * 获取YYYY-MM-DD格式
	 *
	 * @return
	 */

	public static String getDay() {
		return formatDate(new Date(), "yyyy-MM-dd");
	}


	/**
	 * 获取YYYY-MM-DD格式
	 *
	 * @return
	 */

	public static String getDay(Date date) {
		return formatDate(date, "yyyy-MM-dd");
	}


	/**
	 * 获取YYYYMMDD格式
	 *
	 * @return
	 */

	public static String getDays() {
		return formatDate(new Date(), "yyyyMMdd");
	}


	/**
	 * 获取YYYYMMDD格式
	 *
	 * @return
	 */

	public static String getDays(Date date) {
		return formatDate(date, "yyyyMMdd");
	}

	/**
	 * 获取YYYY-MM-DD HH:mm:ss格式
	 *
	 * @return
	 */

	public static String getTime() {
		return formatDate(new Date(), "yyyy-MM-dd HH:mm:ss");
	}


 	/**
	 * 获取YYYY-MM-DD HH:mm:ss.SSS格式
	 *
	 * @return
	 */

	public static String getMsTime() {
		return formatDate(new Date(), "yyyy-MM-dd HH:mm:ss.SSS");
	}


	/**
	 * 获取YYYYMMDDHHmmss格式
	 *
	 * @return
	 */

	public static String getAllTime() {
		return formatDate(new Date(), "yyyyMMddHHmmss");
	}

	/**
	 * 获取YYYY-MM-DD HH:mm:ss格式
	 *
	 * @return
	 */

	public static String getTime(Date date) {
		return formatDate(date, "yyyy-MM-dd HH:mm:ss");
	}

	public static String formatDate(Date date, String pattern) {
		String formatDate = null;
		if (StringUtils.isNotBlank(pattern)) {
			formatDate = DateFormatUtils.format(date, pattern);
		} else {
			formatDate = DateFormatUtils.format(date, "yyyy-MM-dd");
		}
		return formatDate;
	}


	/**
	 * @Title: compareDate
	 * @Description:(日期比较，如果s>=e 返回true 否则返回false)
	 * @param s
	 * @param e
	 * @return boolean
	 * @throws
	 * @author luguosui
	 */

	public static boolean compareDate(String s, String e) {
		if (parseDate(s) == null || parseDate(e) == null) {
			return false;
		}
		return parseDate(s).getTime() >= parseDate(e).getTime();
	}


	/**
	 * 格式化日期
	 *
	 * @return
	 */

	public static Date parseDate(String date) {
		return parse(date,"yyyy-MM-dd");
	}


	/**
	 * 格式化日期
	 *
	 * @return
	 */

	public static Date parseTime(String date) {
		return parse(date,"yyyy-MM-dd HH:mm:ss");
	}


	/**
	 * 格式化日期
	 *
	 * @return
	 */

	public static Date parse(String date, String pattern) {
		try {
			return DateUtils.parseDate(date,pattern);
		} catch (ParseException e) {
			e.printStackTrace();
			return null;
		}
	}


	/**
	 * 格式化日期
	 *
	 * @return
	 */

	public static String format(Date date, String pattern) {
		return DateFormatUtils.format(date, pattern);
	}


	/**
	 * 把日期转换为Timestamp
	 *
	 * @param date
	 * @return
	 */

	public static Timestamp format(Date date) {
		return new Timestamp(date.getTime());
	}


	/**
	 * 校验日期是否合法
	 *
	 * @return
	 */

	public static boolean isValidDate(String s) {
		return parse(s, "yyyy-MM-dd HH:mm:ss") != null;
	}


	/**
	 * 校验日期是否合法
	 *
	 * @return
	 */

	public static boolean isValidDate(String s, String pattern) {
        return parse(s, pattern) != null;
	}

	public static int getDiffYear(String startTime, String endTime) {
		DateFormat fmt = new SimpleDateFormat("yyyy-MM-dd");
		try {
			int years = (int) (((fmt.parse(endTime).getTime() - fmt.parse(
					startTime).getTime()) / (1000 * 60 * 60 * 24)) / 365);
			return years;
		} catch (Exception e) {
			// 如果throw java.text.ParseException或者NullPointerException，就说明格式不对
			return 0;
		}
	}


	/**
	 * <li>功能描述：时间相减得到天数
	 *
	 * @param beginDateStr
	 * @param endDateStr
	 * @return long
	 * @author Administrator
	 */

	public static long getDaySub(String beginDateStr, String endDateStr) {
		long day = 0;
		SimpleDateFormat format = new SimpleDateFormat(
				"yyyy-MM-dd");
		Date beginDate = null;
		Date endDate = null;

		try {
			beginDate = format.parse(beginDateStr);
			endDate = format.parse(endDateStr);
		} catch (ParseException e) {
			e.printStackTrace();
		}
		day = (endDate.getTime() - beginDate.getTime()) / (24 * 60 * 60 * 1000);
		// System.out.println("相隔的天数="+day);

		return day;
	}


	/**
	 * 得到n天之后的日期
	 *
	 * @param days
	 * @return
	 */

	public static String getAfterDayDate(String days) {
		int daysInt = Integer.parseInt(days);

		Calendar canlendar = Calendar.getInstance(); // java.util包
		canlendar.add(Calendar.DATE, daysInt); // 日期减 如果不够减会将月变动
		Date date = canlendar.getTime();

		SimpleDateFormat sdfd = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		String dateStr = sdfd.format(date);

		return dateStr;
	}


	/**
	 * 得到n天之后是周几
	 *
	 * @param days
	 * @return
	 */

	public static String getAfterDayWeek(String days) {
		int daysInt = Integer.parseInt(days);

		Calendar canlendar = Calendar.getInstance(); // java.util包
		canlendar.add(Calendar.DATE, daysInt); // 日期减 如果不够减会将月变动
		Date date = canlendar.getTime();

		SimpleDateFormat sdf = new SimpleDateFormat("E");
		String dateStr = sdf.format(date);

		return dateStr;
	}


	/**
	 * 格式化Oracle Date
	 * @param value
	 * @return
	 */

//	public static String buildDateValue(Object value){
//		if(Func.isOracle()){
//			return "to_date('"+ value +"','yyyy-mm-dd HH24:MI:SS')";
//		}else{
//			return Func.toStr(value);
//		}
//	}

	/**
	 * @Description: 获取当前时间的周一及周日
	 * @Param: Date
	 * @Author: LHX
	 * @Date: 9:59 2018/11/19
	 * @return: java.util.Map<java.lang.String,java.lang.String>
	 */

	public static Map<String,String> getWeekDate(Date date) {
		Map<String,String> map = new HashMap();
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

		Calendar cal = Calendar.getInstance();
		cal.setTime(date);
		// 设置一个星期的第一天，按中国的习惯一个星期的第一天是星期一
		cal.setFirstDayOfWeek(Calendar.MONDAY);
		// 获得当前日期是一个星期的第几天
		int dayWeek = cal.get(Calendar.DAY_OF_WEEK);
		if(dayWeek==1){
			dayWeek = 8;
		}
		// 根据日历的规则，给当前日期减去星期几与一个星期第一天的差值
		cal.add(Calendar.DATE, cal.getFirstDayOfWeek() - dayWeek);
		Date mondayDate = cal.getTime();
		String weekBegin = sdf.format(mondayDate);
		//获取星期日
		cal.add(Calendar.DATE, 4 +cal.getFirstDayOfWeek());
		Date sundayDate = cal.getTime();
		String weekEnd = sdf.format(sundayDate);
		map.put("mondayDate", weekBegin);
		map.put("sundayDate", weekEnd);
		return map;
	}

	public static void main(String[] args) {
		System.out.println(getTime(new Date()));
		System.out.println(getAfterDayWeek("3"));
	}

	public static Long getRemainingSecond() {
		// 获取当前时间
		LocalDateTime now = LocalDateTime.now();

		// 计算当天零点的时间
		LocalDateTime midnight = now.plusDays(1).truncatedTo(ChronoUnit.DAYS);

		// 转换为ZonedDateTime以获取时区信息
		ZonedDateTime zonedDateTime = midnight.atZone(ZoneId.systemDefault());

		// 转换为Unix时间戳（秒）
		long midnightTimestamp = TimeUnit.MILLISECONDS.toSeconds(zonedDateTime.toInstant().toEpochMilli());

		// 获取当前时间的Unix时间戳（秒）
		long currentTimestamp = TimeUnit.MILLISECONDS.toSeconds(System.currentTimeMillis());

		// 计算剩余秒数直到当天零点

//		// 如果已经过了零点，则设置过期时间为0或者重新计算逻辑
//		if (ttlSeconds <= 0) {
//			ttlSeconds = 0; // 或者你可以设置为其他逻辑，比如下一个天的零点
//		}
		return midnightTimestamp - currentTimestamp;
	}
}