From 3c4fee1db116c11d4f04727cfe076d7c94daeaf2 Mon Sep 17 00:00:00 2001
From: yanzhaofeige <yanzhaofeige@qq.com>
Date: Mon, 30 Sep 2024 12:10:57 +0800
Subject: [PATCH] init
---
cpzidc-quartz/src/main/java/com/odcc/cpzidc/quartz/util/CronUtils.java | 63 +++++++++++++++++++++++++++++++
1 files changed, 63 insertions(+), 0 deletions(-)
diff --git a/cpzidc-quartz/src/main/java/com/odcc/cpzidc/quartz/util/CronUtils.java b/cpzidc-quartz/src/main/java/com/odcc/cpzidc/quartz/util/CronUtils.java
new file mode 100644
index 0000000..d84e327
--- /dev/null
+++ b/cpzidc-quartz/src/main/java/com/odcc/cpzidc/quartz/util/CronUtils.java
@@ -0,0 +1,63 @@
+package com.odcc.cpzidc.quartz.util;
+
+import java.text.ParseException;
+import java.util.Date;
+import org.quartz.CronExpression;
+
+/**
+ * cron表达式工具类
+ *
+ * @author ruoyi
+ *
+ */
+public class CronUtils
+{
+ /**
+ * 返回一个布尔值代表一个给定的Cron表达式的有效性
+ *
+ * @param cronExpression Cron表达式
+ * @return boolean 表达式是否有效
+ */
+ public static boolean isValid(String cronExpression)
+ {
+ return CronExpression.isValidExpression(cronExpression);
+ }
+
+ /**
+ * 返回一个字符串值,表示该消息无效Cron表达式给出有效性
+ *
+ * @param cronExpression Cron表达式
+ * @return String 无效时返回表达式错误描述,如果有效返回null
+ */
+ public static String getInvalidMessage(String cronExpression)
+ {
+ try
+ {
+ new CronExpression(cronExpression);
+ return null;
+ }
+ catch (ParseException pe)
+ {
+ return pe.getMessage();
+ }
+ }
+
+ /**
+ * 返回下一个执行时间根据给定的Cron表达式
+ *
+ * @param cronExpression Cron表达式
+ * @return Date 下次Cron表达式执行时间
+ */
+ public static Date getNextExecution(String cronExpression)
+ {
+ try
+ {
+ CronExpression cron = new CronExpression(cronExpression);
+ return cron.getNextValidTimeAfter(new Date(System.currentTimeMillis()));
+ }
+ catch (ParseException e)
+ {
+ throw new IllegalArgumentException(e.getMessage());
+ }
+ }
+}
--
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