内抑怒气,外制愠色,处世待人,心平气和。——圣德太子
最新版优化了一版,支持了
宋以后把十二时辰中每个时辰平分为初、正两部分,这样,子初、子正、丑初、丑正…依次下去,恰为二十四时辰,同现在一天二十四小时时间一致
hutool-core/src/main/java/org/dromara/hutool/core/date/chinese/ShiChen.java · dromara/hutool - Gitee.com
代码语言:javascript复制package org.dromara.hutool.core.date.chinese;
import org.dromara.hutool.core.date.DateBetween;
import org.dromara.hutool.core.text.StrUtil;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
/**
* 时辰转换器,支持宋以后的二十四时辰制度。
* <p>本转换器提供以下功能:
* <ul>
* <li>处理包含“时”、“初”或“正”后缀的时辰描述,并自动返回相应的现代时间段。
* “初”和“正”分别对应每个时辰的前半段和后半段,而不带后缀的“时”描述则涵盖该时辰的完整时间段。</li>
* <li>根据小时数转换为相应的时辰描述,通过{@code isAbs}参数控制是否包含“初”或“正”。</li>
* </ul>
* <p>
* 异常情况:
* <ul>
* <li>如果输入的时辰描述无效或不被识别,{@code toModernTime} 方法将抛出 {@code IllegalArgumentException}。</li>
* <li>同样,如果{@code toShiChen}方法接收到无效的小时数,将返回“未知”。</li>
* </ul>
* 示例:
* <ul>
* <li>{@code toModernTime("子时")} 返回的时间段从23点开始到1点结束。</li>
* <li>{@code toModernTime("子初")} 返回的时间段从23点开始到0点结束。</li>
* <li>{@code toModernTime("子正")} 返回的时间段从0点开始到1点结束。</li>
* <li>{@code toShiChen(0, false)} 返回“子正”。</li>
* <li>{@code toShiChen(0, true)} 返回“子时”。</li>
* </ul>
*
* @author achao@hutool.cn
*/
public class ShiChen {
private static final Map<String, Integer> timeMap = new HashMap<>();
private static final Map<String, Integer[]> fullTimeMap = new HashMap<>();
private static final Map<Integer, String> hourToShiChenMap = new HashMap<>();
private static final Map<Integer, String> hourToShiChenAbsMap = new HashMap<>();
static {
// 初始化时辰对应的小时范围
final String[] times = {"子", "丑", "寅", "卯", "辰", "巳", "午", "未", "申", "酉", "戌", "亥"};
int hour = 23;
for (final String time : times) {
timeMap.put(time "初", hour % 24);
timeMap.put(time "正", (hour 1) % 24);
fullTimeMap.put(time, new Integer[]{hour % 24, (hour 2) % 24});
hour = 2;
}
// 初始化小时到时辰的映射
hour = 23;
for (final String time : times) {
hourToShiChenMap.put(hour % 24, time "初");
hourToShiChenMap.put((hour 1) % 24, time "正");
hourToShiChenAbsMap.put(hour % 24, time "时");
hourToShiChenAbsMap.put((hour 1) % 24, time "时");
hour = 2;
}
}
/**
* 将时辰描述转换为现代时间段。示例:
* <ul>
* <li>{@code toModernTime("子时")} 返回的时间段从23点开始到1点结束。</li>
* <li>{@code toModernTime("子初")} 返回的时间段从23点开始到0点结束。</li>
* <li>{@code toModernTime("子正")} 返回的时间段从0点开始到1点结束。</li>
* </ul>
*
* @param shiChen 时辰描述,可以是“时”、“初”或“正”结尾。
* @return {@link DateBetween} 对象,表示起始和结束时间。
* @throws IllegalArgumentException 如果输入的时辰描述无效。
*/
public static DateBetween toModernTime(final String shiChen) {
if (StrUtil.isEmpty(shiChen)) {
throw new IllegalArgumentException("Invalid shiChen");
}
final Integer startHour;
final Integer endHour;
final LocalDateTime start;
final LocalDateTime end;
if (shiChen.endsWith("初") || shiChen.endsWith("正")) {
startHour = timeMap.get(shiChen);
if (startHour == null) {
throw new IllegalArgumentException("Invalid ShiChen time");
}
endHour = (startHour 1) % 24;
} else {
final String baseTime = shiChen.replace("时", "");
final Integer[] hours = fullTimeMap.get(baseTime);
if (hours == null) {
throw new IllegalArgumentException("Invalid ShiChen time");
}
startHour = hours[0];
endHour = hours[1];
}
start = LocalDateTime.now().withHour(startHour).withMinute(0).withSecond(0).withNano(0);
end = (startHour > endHour) ? start.plusDays(1).withHour(endHour) : start.withHour(endHour);
final Date startDate = Date.from(start.atZone(ZoneId.systemDefault()).toInstant());
final Date endDate = Date.from(end.atZone(ZoneId.systemDefault()).toInstant());
return DateBetween.of(startDate, endDate);
}
/**
* 根据给定的小时数转换为对应的时辰描述。示例:
* <ul>
* <li>{@code toShiChen(0, false)} 返回“子正”。</li>
* <li>{@code toShiChen(0, true)} 返回“子时”。</li>
* </ul>
*
* @param hour 小时数,应在0到23之间。
* @param isAbs 是否返回绝对时辰描述(即包含“时”后缀),而不是“初”或“正”。
* @return 时辰描述,如果小时数无效,则返回“未知”。
*/
public static String toShiChen(final int hour, final boolean isAbs) {
String result = hourToShiChenAbsMap.getOrDefault(hour, "未知");
if (!isAbs && !result.equals("未知")) {
result = hourToShiChenMap.get(hour);
}
return result;
}
}
hutool-core/src/test/java/org/dromara/hutool/core/date/chinese/ShiChenTest.java · dromara/hutool - Gitee.com
代码语言:javascript复制package org.dromara.hutool.core.date.chinese;
import org.dromara.hutool.core.date.DateUnit;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertThrows;
/**
* ShiChenTest
*
* @author achao@apache.org
*/
public class ShiChenTest {
@Test
void testToModernTime() {
// 测试“时”后缀的转换,表示整个时辰
assertEquals(2, ShiChen.toModernTime("子时").between(DateUnit.HOUR));
// 测试“初”和“正”后缀的转换,表示时辰的前半段和后半段
assertEquals(1, ShiChen.toModernTime("子初").between(DateUnit.HOUR));
assertEquals(1, ShiChen.toModernTime("子正").between(DateUnit.HOUR));
// 测试所有时辰
String[] times = {"子", "丑", "寅", "卯", "辰", "巳", "午", "未", "申", "酉", "戌", "亥"};
for (String time : times) {
assertEquals(2, ShiChen.toModernTime(time "时").between(DateUnit.HOUR));
assertEquals(1, ShiChen.toModernTime(time "初").between(DateUnit.HOUR));
assertEquals(1, ShiChen.toModernTime(time "正").between(DateUnit.HOUR));
}
assertThrows(IllegalArgumentException.class, () -> ShiChen.toModernTime("无效时"));
assertThrows(IllegalArgumentException.class, () -> ShiChen.toModernTime("无效正"));
assertThrows(IllegalArgumentException.class, () -> ShiChen.toModernTime(""));
assertThrows(IllegalArgumentException.class, () -> ShiChen.toModernTime(null));
}
@Test
void testToShiChen() {
// 测试小时转换为长安时辰,不包含“初”或“正”
assertEquals("子时", ShiChen.toShiChen(23, true));
assertEquals("子时", ShiChen.toShiChen(0, true));
// 测试小时转换为长安时辰,包含“初”或“正”
assertEquals("子正", ShiChen.toShiChen(0, false));
assertEquals("丑初", ShiChen.toShiChen(1, false));
// 测试边界条件
assertEquals("未知", ShiChen.toShiChen(24, true));
assertEquals("未知", ShiChen.toShiChen(-1, false));
}
}