springboot-base/src/main/java/cn/efunbox/base/util/DateUtil.java

package cn.efunbox.base.util;


import org.apache.commons.lang3.time.DateFormatUtils;
import org.apache.commons.lang3.time.DateUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;

/**
 * 日期工具类
 */
public class DateUtil {
    private static Logger log = LoggerFactory.getLogger(DateUtil.class);

    private static final String DEFAULT_PATTERN = "yyyy-MM-dd";
    /**
     * 一天的毫秒数
     */
    public static long TIME_OF_ONE_DAY = 24 * 60 * 60 * 1000;
    /**
     * 将日期转换为字符串
     *
     * @return
     */
    public static String dateFormat() {
        return dateFormat(new Date(), "yyyy-MM-dd HH:mm:ss");
    }

    public static String dateFormat(String pattern) {
        return dateFormat(new Date(), pattern);
    }

    public static String dateFormat(Date date, String pattern) {
        SimpleDateFormat sdf = new SimpleDateFormat(pattern);
        return sdf.format(date);
    }


    public static String dateFormatDay(Date date) {
        SimpleDateFormat sdf = new SimpleDateFormat(DEFAULT_PATTERN);
        return sdf.format(date);
    }

    /**
     * 字符串转换为日期
     *
     * @param source
     * @return
     * @throws ParseException
     */
    public static Date StrToDate(String source) {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        try {
            return sdf.parse(source);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return null;
    }

    public static Date StrToDate(String source, String pattern) throws ParseException {
        SimpleDateFormat sdf = new SimpleDateFormat(pattern);
        return sdf.parse(source);
    }

    /**
     * 增加年
     *
     * @param date
     * @param i
     * @return
     */
    public static Date addYears(Date date, int i) {
        return DateUtils.addYears(date, i);
    }

    /**
     * 增加月
     *
     * @param date
     * @param i
     * @return
     */
    public static Date addMonths(Date date, int i) {
        return DateUtils.addMonths(date, i);
    }

    /**
     * 增加小时
     *
     * @param date
     * @param amount
     * @return
     */
    public static Date addHours(Date date, int amount) {
        return DateUtils.addHours(date, amount);
    }

    /**
     * 增加天数
     *
     * @param date
     * @param amount
     * @return
     */
    public static Date addDays(Date date, int amount) {
        return DateUtils.addDays(date, amount);
    }

    /**
     * 日期格式换行为GMT格式
     *
     * @param date
     * @return
     */
    public static String toGMTString(Date date) {
        SimpleDateFormat df = new SimpleDateFormat("E, dd MMM yyyy HH:mm:ss z", Locale.UK);
        df.setTimeZone(new java.util.SimpleTimeZone(0, "GMT"));
        return df.format(date);
    }

    /**
     * 获取传入日期和当前当前日期相隔分钟数
     *
     * @param date
     * @return
     * @throws ParseException
     */
    public static int getDateDiffMinutes(String date){
        long intervalMilli = 0;
        try {
            long now = System.currentTimeMillis();
            long ago = StrToDate(date, "yyyy-MM-dd HH:mm:ss").getTime();

            intervalMilli = now - ago;
            if (intervalMilli < 0) {
                return 0;
            }
        }catch (Exception e){
            e.printStackTrace();
            return 0;
        }
        return (int)(intervalMilli / (60 * 1000));
    }

    /**
     * 获取传入日期相隔分钟数
     * date1 - data
     * @param date
     * @param date1
     * @return
     * @throws ParseException
     */
    public static int getDateDiffMinutes(String date,String date1){
        long intervalMilli = 0;
        try {
            long time = StrToDate(date, "yyyy-MM-dd HH:mm:ss").getTime();
            long time1 = StrToDate(date1, "yyyy-MM-dd HH:mm:ss").getTime();

            intervalMilli = time1 - time;
            if (intervalMilli < 0) {
                return 0;
            }
        }catch (Exception e){
            e.printStackTrace();
            return 0;
        }
        return (int)(intervalMilli / (60 * 1000));
    }

    /**
     * 获取传入日期和当前当前日期相隔天数
     *
     * @param date
     * @return
     * @throws ParseException
     */
    public static int getDateDiffDays(String date) throws ParseException {
        long now = System.currentTimeMillis();
        long ago = StrToDate(date, "yyyy-MM-dd").getTime();

        long intervalMilli = now - ago;
        if (intervalMilli < 0) {
            return 0;
        }
        return (int) (intervalMilli / (24 * 3600 * 1000));
    }

    public static int getDateDiffDays2(String date) throws ParseException {
        long now = System.currentTimeMillis();
        long ago = StrToDate(date, "yyyy-MM-dd").getTime();

        long intervalMilli = ago - now;
        if (intervalMilli < 0) {
            return 0;
        }
        return (int) (intervalMilli / (24 * 3600 * 1000));
    }

    /**
     * 获取传入日期和当前当前日期相隔年数
     *
     * @param date
     * @return
     * @throws ParseException
     */
    public static int getDateDiffYears(Date date) {
        Calendar cal1 = Calendar.getInstance();
        cal1.setTime(date);

        Calendar cal2 = Calendar.getInstance();
        cal2.setTime(new Date());

        return cal2.get(Calendar.YEAR) - cal1.get(Calendar.YEAR);
    }

    /**
     * 将DATE类型转成String类型,pattern默认为yyyy-MM-dd
     *
     * @return
     */
    public static String getDateStr() {
        Date  date = new Date();
        SimpleDateFormat formater = new SimpleDateFormat(DEFAULT_PATTERN);
        return formater.format(date);
    }

    public static String getTomorrowDateStr() {
        Date  date = new Date(System.currentTimeMillis() + TIME_OF_ONE_DAY);
        SimpleDateFormat formater = new SimpleDateFormat(DEFAULT_PATTERN);
        return formater.format(date);
    }

    public static String getPreDateStr() {
        Date  date = new Date(System.currentTimeMillis() - TIME_OF_ONE_DAY);
        SimpleDateFormat formater = new SimpleDateFormat(DEFAULT_PATTERN);
        return formater.format(date);
    }

    public static String formatPreDayEndTime(String date) {
//        Date  date = new Date(System.currentTimeMillis() - TIME_OF_ONE_DAY);
//        return  DateFormatUtils.format(date, "yyyy-MM-dd 23:59:59");
        return date + " 23:59:59";
    }



    public static String formatPreDayStartTime(String date) {
//        Date  date = new Date(System.currentTimeMillis() - TIME_OF_ONE_DAY);
//        return  DateFormatUtils.format(date, "yyyy-MM-dd 00:00:00");
        return date + " 00:00:00";
    }

    public static Date getPreDayStartTime() {

        String format = DateFormatUtils.format(new Date(System.currentTimeMillis() - TIME_OF_ONE_DAY), "yyyy-MM-dd 00:00:00");
        java.text.DateFormat dfNew = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        try {
            return dfNew.parse(format);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return new Date();
    }


    public static void main(String[] args) throws Exception {
        //Date preDayStartTime = getPreDayStartTime();
        //System.out.println(preDayStartTime);

        //System.out.println(formatPreDayEndTime());
        //System.out.println(dateFormat(new Date(),"yyyyMMdd"));
        //System.out.println(getDateDiffMinutes("2020-05-13 12:23:30","2020-05-13 12:25:59"));
        //String questionList = "BD1521101|BD1521102|BD1521103";
        //String[] questionCodeList = questionList.splitc("\\|");
        System.out.println(getDateDiffDays2("2021-02-22"));
        Date date = addDays(new Date(),getDateDiffDays2("2021-03-02")+1);
        System.out.println(dateFormat(date,"yyyy-MM-dd"));

    }

}