| | |
| | | package com.ruoyi.performance.utils; |
| | | |
| | | import java.math.BigDecimal; |
| | | import java.math.RoundingMode; |
| | | import java.time.LocalDateTime; |
| | | import java.time.temporal.ChronoUnit; |
| | | import java.time.LocalTime; |
| | | import java.time.format.DateTimeFormatter; |
| | | import java.util.regex.Pattern; |
| | | |
| | | /** |
| | |
| | | // 校验HH:mm格式的正则(24小时制,小时00-23,分钟00-59) |
| | | private static final Pattern TIME_PATTERN = Pattern.compile("^([01]?[0-9]|2[0-3]):[0-5][0-9]$"); |
| | | |
| | | |
| | | private static final DateTimeFormatter FORMATTER = DateTimeFormatter.ofPattern("HH:mm"); |
| | | |
| | | /** |
| | | * 计算两个时分字符串之间的相隔小时数 |
| | | * @param startTime 开始时间(HH:mm,如 "08:30") |
| | | * @param endTime 结束时间(HH:mm,如 "17:45") |
| | | * @return 相隔小时数(保留2位小数,如 9.25 小时) |
| | | * @throws IllegalArgumentException 时间格式错误时抛出异常 |
| | | * 计算两个 HH:mm 时间的小时差 |
| | | * |
| | | * @param startTime 开始时间,例如 "23:30" |
| | | * @param endTime 结束时间,例如 "01:30" |
| | | * @return 小时差,结束时间小于开始时间时返回负数 |
| | | */ |
| | | public static double getHourDiff(String startTime, String endTime) { |
| | | // 1. 校验时间格式 |
| | | validateTimeFormat(startTime); |
| | | validateTimeFormat(endTime); |
| | | |
| | | // 2. 解析时分字符串为总分钟数 |
| | | int startMinutes = convertTimeToMinutes(startTime); |
| | | int endMinutes = convertTimeToMinutes(endTime); |
| | | LocalTime start = LocalTime.parse(startTime, FORMATTER); |
| | | LocalTime end = LocalTime.parse(endTime, FORMATTER); |
| | | |
| | | // 3. 计算分钟差 |
| | | int minuteDiff = endMinutes - startMinutes; |
| | | int startMinutes = start.getHour() * 60 + start.getMinute(); |
| | | int endMinutes = end.getHour() * 60 + end.getMinute(); |
| | | |
| | | // 4. 转换为小时数(保留2位小数,避免精度丢失) |
| | | BigDecimal hourDiff = new BigDecimal(minuteDiff) |
| | | .divide(new BigDecimal(60), 2, RoundingMode.HALF_UP); |
| | | return hourDiff.doubleValue(); |
| | | int diffMinutes; |
| | | |
| | | if (endMinutes >= startMinutes) { |
| | | diffMinutes = endMinutes - startMinutes; |
| | | } else { |
| | | diffMinutes = -(24 * 60 - startMinutes + endMinutes); |
| | | } |
| | | |
| | | return diffMinutes / 60.0; |
| | | } |
| | | |
| | | |
| | | public static void main(String[] args) { |
| | | System.out.println(getHourDiff("07:38","19:26")); |
| | | LocalDateTime localDateTime = LocalDateTime.of(2026, 3, 30, 7, 38); |
| | | LocalDateTime localDateTime2 = LocalDateTime.of(2026, 3, 30, 19, 26); |
| | | System.out.println(getTimeDifference(localDateTime,localDateTime2)); |
| | | } |
| | | |
| | | /** |
| | | * 计算两个时间的差值,返回 天:时:分:秒(每位两位数,支持跨天) |
| | | * @param startTime 开始时间 |
| | | * @param endTime 结束时间 |
| | | * @return 格式化后的时间差(例:01天 01时 30分 05秒) |
| | | */ |
| | | public static String getTimeDifference(LocalDateTime startTime, LocalDateTime endTime) { |
| | | // 1. 计算两个时间的**总毫秒差**(绝对值,避免时间顺序问题) |
| | | long totalMillis = Math.abs(ChronoUnit.MILLIS.between(startTime, endTime)); |
| | | |
| | | // 2. 定义时间单位常量(毫秒) |
| | | final long MILLIS_PER_DAY = 24 * 60 * 60 * 1000; // 1天 |
| | | final long MILLIS_PER_HOUR = 60 * 60 * 1000; // 1小时 |
| | | final long MILLIS_PER_MINUTE = 60 * 1000; // 1分钟 |
| | | final long MILLIS_PER_SECOND = 1000; // 1秒 |
| | | |
| | | // 3. 拆分 天、时、分、秒 |
| | | long days = totalMillis / MILLIS_PER_DAY; |
| | | long remainingMillis = totalMillis % MILLIS_PER_DAY; |
| | | long hours = remainingMillis / MILLIS_PER_HOUR; |
| | | remainingMillis %= MILLIS_PER_HOUR; |
| | | long minutes = remainingMillis / MILLIS_PER_MINUTE; |
| | | long seconds = remainingMillis / MILLIS_PER_SECOND; |
| | | |
| | | // 4. 格式化:%02d = 整数补零到两位数(核心!满足精确到两位数要求) |
| | | return String.format("%02d天 %02d时 %02d分 %02d秒", days, hours, minutes, seconds); |
| | | System.out.println(getHourDiff("08:00","11:15")); |
| | | } |
| | | |
| | | /** |
| | |
| | | if (time == null || !TIME_PATTERN.matcher(time).matches()) { |
| | | throw new IllegalArgumentException("时间格式错误,需为HH:mm(24小时制):" + time); |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * 将HH:mm字符串转换为总分钟数(如 08:30 → 510 分钟) |
| | | */ |
| | | private static int convertTimeToMinutes(String time) { |
| | | String[] parts = time.split(":"); |
| | | int hour = Integer.parseInt(parts[0]); |
| | | int minute = Integer.parseInt(parts[1]); |
| | | return hour * 60 + minute; |
| | | } |
| | | |
| | | } |