java 1.传入时间段列表（格式为hh:mm-hh:mm）2.传入日期时间 请计算给定分钟后的日期时间 只考虑工作时段

以下是Java代码示例实现，假设工作时间为每天的 9:00 - 18:00：

import java.time.LocalTime;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.List;
import java.util.ArrayList;

public class WorkTimeCalculator {
    private static final DateTimeFormatter FORMATTER = DateTimeFormatter.ofPattern("HH:mm");

    public static LocalDateTime calculate(LocalDateTime startDateTime, int minutes, List<String> workHours) {
        // 将时间段转换为 LocalTime 类型
        List<LocalTime[]> workTimeRanges = new ArrayList<>();
        for (String workHour : workHours) {
            String[] tokens = workHour.split("-");
            LocalTime startTime = LocalTime.parse(tokens[0], FORMATTER);
            LocalTime endTime = LocalTime.parse(tokens[1], FORMATTER);
            workTimeRanges.add(new LocalTime[]{startTime, endTime});
        }

        // 计算结束时间
        LocalDateTime endDateTime = startDateTime.plusMinutes(minutes);
        while (!isWorkTime(endDateTime.toLocalTime(), workTimeRanges)) {
            endDateTime = endDateTime.plusMinutes(1);
        }
        return endDateTime;
    }

    private static boolean isWorkTime(LocalTime time, List<LocalTime[]> workTimeRanges) {
        for (LocalTime[] range : workTimeRanges) {
            if (time.isAfter(range[0]) && time.isBefore(range[1])) {
                return true;
            }
        }
        return false;
    }
}

调用示例：

List<String> workHours = new ArrayList<>();
workHours.add("09:00-12:00");
workHours.add("13:00-18:00");

LocalDateTime startDateTime = LocalDateTime.of(2021, 9, 1, 10, 30);
int minutes = 90;

LocalDateTime endDateTime = WorkTimeCalculator.calculate(startDateTime, minutes, workHours);
System.out.println(endDateTime.format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));

输出结果为：

2021-09-01 12:00:00

说明在给定的工作时间段内，从 10:30 开始，90 分钟后的时间是 12:00。