driver-server/src/main/java/com/jwl/driver/server/util/DateTimeUtil.java

package com.jwl.driver.server.util;

import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.time.temporal.ChronoUnit;

/**
 * @Author: yangshuang
 * @Description:
 * @Date: 2021/2/23 15:23
 * @Version: 1.0
 */
public class DateTimeUtil {

    /**
     * 时间转字符串
     * @param dateTime
     * @return
     */
    public static String dateTime2Str(LocalDateTime dateTime, DateTimeFormatter df) {
        return df.format(dateTime);
    }

    /**
     * 字符串转时间
     * @param str
     * @return
     */
    public static LocalDateTime str2DateTime(String str, DateTimeFormatter df) {
        return LocalDateTime.parse(str, df);
    }

    /**
     * 获取当前时间字符串
     * @return
     */
    public static String getCurrentStr(DateTimeFormatter df) {
        return dateTime2Str(LocalDateTime.now(), df);
    }

    /**
     * 计算两个时间之间间隔的天数
     * @param startDate
     * @param endDate
     * @return
     */
    public static long getIntervalDays(LocalDateTime startDate, LocalDateTime endDate) {
       return ChronoUnit.DAYS.between(startDate, endDate);
    }


    public static void main(String[] args) {
        LocalDateTime date1 = LocalDateTime.of(2023, 4, 18,0,0,0);
        LocalDateTime date2 = LocalDateTime.of(2023, 4, 19,23,59,59);
        long between = ChronoUnit.DAYS.between(date1, date2);
        System.out.println(between);

    }
}