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cn.watsontech.webhelper.common.util.DateUtils Maven / Gradle / Ivy

package cn.watsontech.webhelper.common.util;

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

import java.text.ParseException;
import java.util.Date;

/**
 * 日期工具类
 *
 * 继承org.apache.commons.lang3.time.DateUtils类
 *
 * Created by Watson on 2019/12/16.
 */
public class DateUtils extends org.apache.commons.lang3.time.DateUtils {

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

    /**
     * 得到当前日期字符串 格式(yyyy-MM-dd)
     *
     * @return
     */
    public static String getDate() {
        return getDate("yyyy-MM-dd");
    }

    /**
     * 得到当前日期字符串 格式(yyyy-MM-dd) pattern可以为:"yyyy-MM-dd" "HH:mm:ss" "E"
     *
     * @param pattern
     * @return
     */
    public static String getDate(String pattern) {
        return DateFormatUtils.format(new Date(), pattern);
    }

    /**
     * 得到日期字符串 默认格式(yyyy-MM-dd) pattern可以为:"yyyy-MM-dd" "HH:mm:ss" "E"
     *
     * @param date
     * @param pattern
     * @return
     */
    public static String formatDate(Date date, Object... pattern) {
        String formatDate = null;
        if (pattern != null && pattern.length > 0) {
            formatDate = DateFormatUtils.format(date, pattern[0].toString());
        } else {
            formatDate = DateFormatUtils.format(date, "yyyy-MM-dd");
        }
        return formatDate;
    }

    /**
     * 得到日期时间字符串,转换格式(yyyy-MM-dd HH:mm:ss)
     *
     * @param date
     * @return
     */
    public static String formatDateTime(Date date) {
        return formatDate(date, "yyyy-MM-dd HH:mm:ss");
    }

    /**
     * 得到当前时间字符串 格式(HH:mm:ss)
     *
     * @return
     */
    public static String getTime() {
        return formatDate(new Date(), "HH:mm:ss");
    }

    /**
     * 得到当前日期和时间字符串 格式(yyyy-MM-dd HH:mm:ss)
     *
     * @return
     */
    public static String getDateTime() {
        return formatDate(new Date(), "yyyy-MM-dd HH:mm:ss");
    }

    /**
     * 得到当前年份字符串 格式(yyyy)
     *
     * @return
     */
    public static String getYear() {
        return formatDate(new Date(), "yyyy");
    }

    /**
     * 得到当前月份字符串 格式(MM)
     *
     * @return
     */
    public static String getMonth() {
        return formatDate(new Date(), "MM");
    }

    /**
     * 得到当天字符串 格式(dd)
     *
     * @return
     */
    public static String getDay() {
        return formatDate(new Date(), "dd");
    }

    /**
     * 得到当前星期字符串 格式(E)星期几
     *
     * @return
     */
    public static String getWeek() {
        return formatDate(new Date(), "E");
    }

    /**
     * 日期型字符串转化为日期格式
     *
     * "yyyy-MM-dd HH:mm:ss", "yyyy/MM/dd HH:mm:ss", "yyyy.MM.dd HH:mm:ss",
     * "yyyy-MM-dd HH:mm", "yyyy/MM/dd HH:mm", "yyyy.MM.dd HH:mm", "yyyy-MM-dd",
     * "yyyy/MM/dd", "yyyy.MM.dd", "yyyy-MM", "yyyy/MM", "yyyy.MM"
     *
     * @param str
     * @return
     */
    public static Date parseDate(Object str) {
        if (str == null) {
            return null;
        }
        try {
            return parseDate(str.toString(), parsePatterns);
        } catch (ParseException e) {
            return null;
        }
    }

    /**
     * 获取过去的天数
     *
     * @param date
     * @return
     */
    public static long pastDays(Date date) {
        long t = new Date().getTime() - date.getTime();
        return t / (24 * 60 * 60 * 1000);
    }

    /**
     * 获取过去的小时
     *
     * @param date
     * @return
     */
    public static long pastHour(Date date) {
        long t = new Date().getTime() - date.getTime();
        return t / (60 * 60 * 1000);
    }

    /**
     * 获取过去的分钟
     *
     * @param date
     * @return
     */
    public static long pastMinutes(Date date) {
        long t = new Date().getTime() - date.getTime();
        return t / (60 * 1000);
    }

    /**
     * 转换为时间(天,时:分:秒.毫秒)
     *
     * @param timeMillis
     * @return
     */
    public static String formatDateTime(long timeMillis) {
        long day = timeMillis / (24 * 60 * 60 * 1000);
        long hour = (timeMillis / (60 * 60 * 1000) - day * 24);
        long min = ((timeMillis / (60 * 1000)) - day * 24 * 60 - hour * 60);
        long s = (timeMillis / 1000 - day * 24 * 60 * 60 - hour * 60 * 60 - min * 60);
        long sss = (timeMillis - day * 24 * 60 * 60 * 1000 - hour * 60 * 60 * 1000 - min * 60 * 1000 - s * 1000);
        return (day > 0 ? day + "," : "") + hour + ":" + min + ":" + s + "." + sss;
    }

    /**
     * 获取两个日期之间的天数
     *
     * @param before
     * @param after
     * @return
     */
    public static double getDistanceOfTwoDate(Date before, Date after) {
        long beforeTime = before.getTime();
        long afterTime = after.getTime();
        return (afterTime - beforeTime) / (1000 * 60 * 60 * 24);
    }

    /**
     * @param args
     * @throws ParseException
     */
    public static void main(String[] args) throws ParseException {
//		System.out.println(formatDate(parseDate("2010/3/6")));
//		System.out.println(getDate("yyyy年MM月dd日 E"));
//		long time = new Date().getTime()-parseDate("2012-11-19").getTime();
//		System.out.println(time/(24*60*60*1000));
    }
}




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