What is a Cron expression?

A Cron expression is a string used to define a schedule for recurring tasks. The standard format has 5 fields (minute, hour, day, month, weekday), while Quartz adds seconds and year fields.

Quartz is a Java job scheduling library that extends standard Cron with a seconds field and optional year field. The expression format is: second minute hour day month weekday year.

How do I test my Cron expression?

The tool shows a human-readable description of your expression as you build it, so you can verify the schedule without deploying it.

Cron Expression Generator - Visual Cron Job Builder

常见问题

什么是 Cron 表达式？

Cron 表达式是一种用于定义定时任务调度的字符串。标准格式有 5 个字段（分、时、日、月、周），Quartz 格式额外增加了秒和年字段。

什么是 Quartz Cron？

Quartz 是一个 Java 任务调度库，在标准 Cron 基础上增加了秒字段和可选的年字段。表达式格式为：秒分时日月周年。

如何测试 Cron 表达式？

本工具会在您构建表达式时实时显示可读的描述，方便您在部署前验证调度计划是否正确。

Cron 表达式生成器

常见问题