Merge pull request #4026 from Wqh1241409260/fix-issue-4006

Fix issue 4006

hutool-cron/src/main/java/cn/hutool/cron/pattern/matcher/DayOfMonthMatcher.java

@@ -54,4 +54,16 @@ public class DayOfMonthMatcher extends BoolArrayMatcher {
 		return match(31);
 	}
 
+	/**
+	 * 检查value是这个月的最后一天
+	 * @param value 被检查的值
+	 * @return
+	 */
+	public boolean isLastDay(Integer value,Integer month, boolean isLeapYear) {
+		if(isLastDayOfMonth(value, month, isLeapYear)) {
+			return match(31);
+		}
+		return  false;
+	}
+
 }

hutool-cron/src/main/java/cn/hutool/cron/pattern/matcher/PatternMatcher.java

@@ -192,7 +192,7 @@ public class PatternMatcher {
 			// pr#1189
 			if (i == Part.DAY_OF_MONTH.ordinal()
 				&& matchers[i] instanceof DayOfMonthMatcher
-				&& ((DayOfMonthMatcher) matchers[i]).isLast()) {
+				&& ((DayOfMonthMatcher) matchers[i]).isLastDay(values[i],values[i+1],isLeapYear(values[Part.YEAR.ordinal()]))) {
 				int newMonth = newValues[Part.MONTH.ordinal()];
 				int newYear = newValues[Part.YEAR.ordinal()];
 				nextValue = getLastDay(newMonth, newYear);
@@ -226,7 +226,7 @@ public class PatternMatcher {
 					continue;
 				} else if (i == Part.DAY_OF_MONTH.ordinal()
 					&& matchers[i] instanceof DayOfMonthMatcher
-					&& ((DayOfMonthMatcher) matchers[i]).isLast()) {
+					&& ((DayOfMonthMatcher) matchers[i]).isLastDay(values[i],values[i+1],isLeapYear(values[Part.YEAR.ordinal()]))) {
 					int newMonth = newValues[Part.MONTH.ordinal()];
 					int newYear = newValues[Part.YEAR.ordinal()];
 					nextValue = getLastDay(newMonth, newYear);
@@ -247,6 +247,14 @@ public class PatternMatcher {
 		return newValues;
 	}
 
+	/**
+	 * 判断年份是否是闰年
+	 * @param year
+	 * @return 返回boolean表示是否是闰年
+	 */
+	private static boolean isLeapYear(int year) {
+		return (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0);
+	}
 	/**
 	 * 设置从{@link Part#SECOND}到指定部分，全部设置为最小值
 	 *

hutool-cron/src/test/java/cn/hutool/cron/pattern/Issue4006Test.java

@@ -0,0 +1,20 @@
+package cn.hutool.cron.pattern;
+
+import cn.hutool.core.date.DateTime;
+import org.junit.jupiter.api.Test;
+
+import java.util.Date;
+
+public class Issue4006Test {
+	@Test
+	void testCron() {
+//        String cron = "0 0 0 */1 * ?";
+		String cron = "0 0 0 */1 * ? *";
+		DateTime judgeTime = DateTime.of(new Date());
+		CronPattern cronPattern = new CronPattern(cron);
+
+		System.out.println("cronPattern = " + cronPattern);
+		Date nextDate = CronPatternUtil.nextDateAfter(cronPattern, judgeTime, true);
+		System.out.println("nextDate = " + nextDate);
+	}
+}