qianshanNucleicContrast/ruoyi-common/src/main/java/com/ruoyi/common/utils/DateUtils.java

package com.ruoyi.common.utils;

import java.lang.management.ManagementFactory;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.ZoneId;
import java.time.ZonedDateTime;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

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

/**
 * 时间工具类
 *
 * @author ruoyi
 */
public class DateUtils extends org.apache.commons.lang3.time.DateUtils {
    public static String YYYY = "yyyy";

    public static String YYYY_MM = "yyyy-MM";

    public static String YYYY_MM_DD = "yyyy-MM-dd";

    public static String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";

    public static String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";

    private static String[] parsePatterns = {
            "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM",
            "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM",
            "yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM"};

    /**
     * 获取当前Date型日期
     *
     * @return Date() 当前日期
     */
    public static Date getNowDate() {
        return new Date();
    }

    /**
     * 获取当前日期, 默认格式为yyyy-MM-dd
     *
     * @return String
     */
    public static String getDate() {
        return dateTimeNow(YYYY_MM_DD);
    }

    public static final String getTime() {
        return dateTimeNow(YYYY_MM_DD_HH_MM_SS);
    }

    public static final String dateTimeNow() {
        return dateTimeNow(YYYYMMDDHHMMSS);
    }

    public static final String dateTimeNow(final String format) {
        return parseDateToStr(format, new Date());
    }

    public static final String dateTime(final Date date) {
        return parseDateToStr(YYYY_MM_DD, date);
    }

    public static final String parseDateToStr(final String format, final Date date) {
        return new SimpleDateFormat(format).format(date);
    }

    public static final Date dateTime(final String format, final String ts) {
        try {
            return new SimpleDateFormat(format).parse(ts);
        } catch (ParseException e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * 日期路径 即年/月/日 如2018/08/08
     */
    public static final String datePath() {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyy/MM/dd");
    }

    /**
     * 日期路径 即年/月/日 如20180808
     */
    public static final String dateTime() {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyyMMdd");
    }

    /**
     * 日期型字符串转化为日期 格式
     */
    public static Date parseDate(Object str) {
        if (str == null) {
            return null;
        }
        try {
            return parseDate(str.toString(), parsePatterns);
        } catch (ParseException e) {
            return null;
        }
    }

    /**
     * 获取服务器启动时间
     */
    public static Date getServerStartDate() {
        long time = ManagementFactory.getRuntimeMXBean().getStartTime();
        return new Date(time);
    }

    /**
     * 计算相差天数
     */
    public static int differentDaysByMillisecond(Date date1, Date date2) {
        return Math.abs((int) ((date2.getTime() - date1.getTime()) / (1000 * 3600 * 24)));
    }


    /**
     * 计算两个时间差（小时）
     * sendDate 结束时间
     * snowDate 开始时间
     *
     */
    public static Long getDateHour(String sendDate, String snowDate) {

        SimpleDateFormat simpleDateFormat = new SimpleDateFormat(YYYY_MM_DD_HH_MM_SS);
        try {
            Date nowDate = simpleDateFormat.parse(snowDate);
            Date endDate = simpleDateFormat.parse(sendDate);

            long nd = 1000 * 24 * 60 * 60;
            long nh = 1000 * 60 * 60;
            long nm = 1000 * 60;
            // long ns = 1000;
            // 获得两个时间的毫秒时间差异
            long diff = endDate.getTime() - nowDate.getTime();
            // 计算差多少天
            long day = diff / nd;
            // 计算差多少小时
            long hour = diff % nd / nh;

            Long hours = day*24+hour;

            return hours;
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return null;

    }


    /**
     * 计算两个时间差
     */
    public static String getDatePoor(Date endDate, Date nowDate) {
        long nd = 1000 * 24 * 60 * 60;
        long nh = 1000 * 60 * 60;
        long nm = 1000 * 60;
        // long ns = 1000;
        // 获得两个时间的毫秒时间差异
        long diff = endDate.getTime() - nowDate.getTime();
        // 计算差多少天
        long day = diff / nd;
        // 计算差多少小时
        long hour = diff % nd / nh;
        // 计算差多少分钟
        long min = diff % nd % nh / nm;
        // 计算差多少秒//输出结果
        // long sec = diff % nd % nh % nm / ns;
        return day + "天" + hour + "小时" + min + "分钟";
    }

    /**
     * 增加 LocalDateTime ==> Date
     */
    public static Date toDate(LocalDateTime temporalAccessor) {
        ZonedDateTime zdt = temporalAccessor.atZone(ZoneId.systemDefault());
        return Date.from(zdt.toInstant());
    }

    /**
     * 增加 LocalDate ==> Date
     */
    public static Date toDate(LocalDate temporalAccessor) {
        LocalDateTime localDateTime = LocalDateTime.of(temporalAccessor, LocalTime.of(0, 0, 0));
        ZonedDateTime zdt = localDateTime.atZone(ZoneId.systemDefault());
        return Date.from(zdt.toInstant());
    }

    /**
     * 获取本周一的日期
     */
    public static String getCurrentMonday() {
        SimpleDateFormat dateFormat = new SimpleDateFormat(YYYY_MM_DD);
        int mondayPlus = getMondayPlus();
        GregorianCalendar currentDate = new GregorianCalendar();
        currentDate.add(GregorianCalendar.DATE, mondayPlus);
        Date monday = currentDate.getTime();

        return dateFormat.format(monday);
    }

    /**
     * 获取当前日期与本周一相差的天数
     */
    private static int getMondayPlus() {
        Calendar cd = Calendar.getInstance();
        // 默认：星期日是第一天
        int dayOfWeek = cd.get(Calendar.DAY_OF_WEEK);

        if (dayOfWeek == 1) {
            return -6;
        } else {
            return 2 - dayOfWeek;
        }
    }

    /**
     * 获取给定日期N天后的日期
     *
     * @param dateTime
     * @param days
     * @return
     */
    public static String getDateAfterNDays(String dateTime, int days) {
        Calendar calendar = Calendar.getInstance();
        String[] dateTimeArray = dateTime.split("-");
        int year = Integer.parseInt(dateTimeArray[0]);
        int month = Integer.parseInt(dateTimeArray[1]);
        int day = Integer.parseInt(dateTimeArray[2]);
        calendar.set(year, month - 1, day);
        long time = calendar.getTimeInMillis();// 给定时间与1970 年 1 月 1 日的00:00:00.000的差。以毫秒显示
        calendar.setTimeInMillis(time + days * 1000 * 60 * 60 * 24);// 用给定的 long值设置此Calendar的当前时间值
        return calendar.get(Calendar.YEAR)// 年
                + "-" + (calendar.get(Calendar.MONTH) + 1)// 月
                + "-" + calendar.get(Calendar.DAY_OF_MONTH)// 日
                ;
    }


    public static String getAddDate(String dateTime,int n) {

        SimpleDateFormat simpleDateFormat = new SimpleDateFormat(YYYY_MM_DD_HH_MM_SS);
        Date holdDate = null;
        try {
            holdDate = simpleDateFormat.parse(dateTime);
            Calendar calendar =new GregorianCalendar();
            calendar.setTime(holdDate);
            calendar.add(calendar.DATE, n);
            Date utilDate = calendar.getTime();
            holdDate =new Date(utilDate.getTime());
            String rDate = simpleDateFormat.format(holdDate);
            return rDate;
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return null;

    }

}