修复CronPatternUtil.nextDateAfter栈溢出问题

hutool-cron/src/main/java/org/dromara/hutool/cron/pattern/CronPattern.java

@@ -164,13 +164,24 @@ public class CronPattern {
 			calendar = newCalendar;
 		}
 
+		return nextMatch(calendar);
+	}
+
+	/**
+	 * 返回匹配到的下一个时间，如果给定时间匹配，直接返回
+	 *
+	 * @param calendar 时间
+	 * @return 匹配到的下一个时间
+	 */
+	public Calendar nextMatch(final Calendar calendar) {
 		Calendar next = nextMatchAfter(PatternUtil.getFields(calendar, true), calendar.getTimeZone());
-		if (!match(next, true)) {
+		if (match(next, true)) {
+			return next;
+		}
+
 		next.set(Calendar.DAY_OF_MONTH, next.get(Calendar.DAY_OF_MONTH) + 1);
 		next = CalendarUtil.beginOfDay(next);
-			return nextMatchAfter(next);
+		return nextMatch(next);
-		}
-		return next;
 	}
 
 	@Override

hutool-cron/src/main/java/org/dromara/hutool/cron/pattern/matcher/PatternMatcher.java

@@ -16,6 +16,7 @@ import org.dromara.hutool.core.date.DateUtil;
 import org.dromara.hutool.cron.pattern.Part;
 
 import java.time.Year;
+import java.util.Arrays;
 import java.util.Calendar;
 import java.util.TimeZone;
 
@@ -170,6 +171,13 @@ public class PatternMatcher {
 		return calendar;
 	}
 
+	@Override
+	public String toString() {
+		return "PatternMatcher{" +
+			"matchers=" + Arrays.toString(matchers) +
+			'}';
+	}
+
 	/**
 	 * 获取下一个匹配日期时间<br>
 	 * 获取方法是，先从年开始查找对应部分的下一个值：

hutool-cron/src/test/java/org/dromara/hutool/cron/pattern/Issue3685Test.java

@@ -0,0 +1,28 @@
+package org.dromara.hutool.cron.pattern;
+
+import org.dromara.hutool.core.date.DateUtil;
+import org.junit.jupiter.api.Test;
+
+import java.util.Date;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class Issue3685Test {
+	@Test
+	void nextDateAfterTest() {
+		Date date = CronPatternUtil.nextDateAfter(CronPattern.of("0 0 * * MON"), DateUtil.parse("2024-08-01"));
+		assertEquals("2024-08-05 00:00:00", date.toString());
+
+		date = CronPatternUtil.nextDateAfter(CronPattern.of("0 0 * * MON"), DateUtil.parse("2024-08-02"));
+		assertEquals("2024-08-05 00:00:00", date.toString());
+
+		date = CronPatternUtil.nextDateAfter(CronPattern.of("0 0 * * MON"), DateUtil.parse("2024-08-03"));
+		assertEquals("2024-08-05 00:00:00", date.toString());
+
+		date = CronPatternUtil.nextDateAfter(CronPattern.of("0 0 * * MON"), DateUtil.parse("2024-08-04"));
+		assertEquals("2024-08-05 00:00:00", date.toString());
+
+		date = CronPatternUtil.nextDateAfter(CronPattern.of("0 0 * * MON"), DateUtil.parse("2024-08-05"));
+		assertEquals("2024-08-12 00:00:00", date.toString());
+	}
+}