LocalDateTime节日和平日在时间占比计算方法

LocalDateTime节日和平日在时间占比计算方法

需求背景：
假设 2025-4-4 ~ 2025-4-6 是节假日
计算某个时间段在节假日中的占比，保留小数点后4位

LocalDate now = LocalDate.of(2025,05,22);
        LocalDate ld = now.minusDays(18);
        System.out.println("ld="+ ld);          //ld=2025-05-04

        LocalDate now2 = LocalDate.of(2025,07,03);
        LocalDate ld2 = now2.minusDays(30);
        System.out.println("ld2="+ ld2);    //ld2=2025-06-03

        LocalDate ll = LocalDate.of(2025,06,03);
        LocalTime tt = LocalTime.of(11,56,55);
        LocalDateTime ldt = ll.atTime(tt);

基础版本

package com.example.core.mydemo.java3.jsonDemo;

import java.text.DecimalFormat;
import java.time.LocalDateTime;
import java.time.temporal.ChronoUnit;

public class HolidayTimeCalculator {
    public static void main(String[] args) {
        // 定义节假日时间范围 - 清明节
        LocalDateTime holidayStart = LocalDateTime.of(2025, 4, 4, 0, 0);
        LocalDateTime holidayEnd = LocalDateTime.of(2025, 4, 6, 23, 59, 59);

        // 需要计算的时间点
        LocalDateTime time1 = LocalDateTime.of(2025, 4, 6, 21, 30);
        LocalDateTime time2 = LocalDateTime.of(2025, 4, 7, 21, 30);

        // 计算平日时间占比(假设平日为24小时)
        long totalWeekdaySeconds = 24 * 60 * 60;


        // 设置4位小数格式
        DecimalFormat df = new DecimalFormat("0.0000");

        // 计算时间点在节假日中的占比
        if (time1.isAfter(holidayStart) && time1.isBefore(holidayEnd)) {
            long holidaySeconds = ChronoUnit.SECONDS.between(time1,holidayEnd);
            double holidayRatio = (double) holidaySeconds / totalWeekdaySeconds;
            System.out.printf("2025-04-06 21:30:00占节假日时间的" + df.format(holidayRatio) + "\n");
        }


        long weekdaySeconds = time2.getHour() * 3600 + time2.getMinute() * 60;
        double weekdayRatio = (double) weekdaySeconds / totalWeekdaySeconds;
        System.out.printf("2025-04-07 21:30:00占平日时间的"+ df.format(weekdayRatio));
    }
}

升级版本

package com.example.core.mydemo.java3.jsonDemo;

import java.math.BigDecimal;
import java.text.DecimalFormat;
import java.time.LocalDateTime;
import java.time.temporal.ChronoUnit;

public class HolidayTimeCalculator2 {
    public static void main(String[] args) {

//        BigDecimal bigDecimal = new BigDecimal("200.1234");
//        System.out.println(bigDecimal.toString());   //200.1234

        // 需要计算的时间点
        LocalDateTime time1 = LocalDateTime.of(2025, 4, 3, 21, 30);
        LocalDateTime time2 = LocalDateTime.of(2025, 4, 4, 21, 30);


        // 定义节假日时间范围
//        LocalDateTime holidayStart = LocalDateTime.of(2025, 4, 4, 0, 0);
//        LocalDateTime holidayEnd = LocalDateTime.of(2025, 4, 6, 23, 59, 59);

        LocalDateTime holidayStart = null;
        LocalDateTime holidayEnd = null;

        extracted(time1, time2, holidayStart, holidayEnd);
    }

    private static void extracted(LocalDateTime time1, LocalDateTime time2, LocalDateTime holidayStart, LocalDateTime holidayEnd) {
        // 计算平日时间占比(假设平日为24小时)
        long totalWeekdaySeconds = 24 * 60 * 60;

        // 设置4位小数格式
        DecimalFormat df = new DecimalFormat("0.0000");

        BigDecimal holiday = new BigDecimal(0);
        BigDecimal common = new BigDecimal(0);

        //判断是否包含节假日
        //全部节假日
        //开始节假期，结束平日
        //开始平日，结束是节假日
        //全部是平日
        if(holidayStart != null && (time1.isAfter(holidayStart) || time1.isEqual(holidayStart))  && (time2.isBefore(holidayEnd) || time2.isEqual(holidayEnd))){
            long holidaySeconds = ChronoUnit.SECONDS.between(time1, time2);
            double holidayRatio = (double) holidaySeconds / totalWeekdaySeconds;
            BigDecimal add = new BigDecimal(df.format(holidayRatio));
            holiday = holiday.add(add);
        }else if(holidayStart != null && (time1.isAfter(holidayStart) || time1.isEqual(holidayStart))  && (time1.isBefore(holidayEnd) || time1.isEqual(holidayEnd))){

            long holidaySeconds = ChronoUnit.SECONDS.between(time1, holidayEnd);
            double holidayRatio = (double) holidaySeconds / totalWeekdaySeconds;
            BigDecimal add = new BigDecimal(df.format(holidayRatio));
            holiday = holiday.add(add);

            long weekdaySeconds = ChronoUnit.SECONDS.between(holidayEnd, time2);
            double weekdayRatio = (double) weekdaySeconds / totalWeekdaySeconds;
            BigDecimal add2 = new BigDecimal(df.format(weekdayRatio));
            common = common.add(add2);

        }else if(holidayStart != null && (time2.isAfter(holidayStart) || time2.isEqual(holidayStart))  && (time2.isBefore(holidayEnd) || time2.isEqual(holidayEnd))){

            long holidaySeconds = ChronoUnit.SECONDS.between(holidayStart, time2);
            double holidayRatio = (double) holidaySeconds / totalWeekdaySeconds;
            BigDecimal add = new BigDecimal(df.format(holidayRatio));
            holiday = holiday.add(add);

            long weekdaySeconds = ChronoUnit.SECONDS.between(time1, holidayStart);
            double weekdayRatio = (double) weekdaySeconds / totalWeekdaySeconds;
            BigDecimal add2 = new BigDecimal(df.format(weekdayRatio));
            common = common.add(add2);

        }else if(holidayStart == null || time2.isBefore(holidayStart) || time1.isAfter(holidayEnd)){
            //不含节假日的参数，则默认都是平日
            long weekdaySeconds = ChronoUnit.SECONDS.between(time1, time2);
            double weekdayRatio = (double) weekdaySeconds / totalWeekdaySeconds;
            BigDecimal add = new BigDecimal(df.format(weekdayRatio));
            common = common.add(add);
        }

        System.out.println("holiday=" + holiday);
        System.out.println("common=" + common);


    }
}