How to send notifications before a task starts in Quartz?

A clever way to send notifications before Quartz tasks are executed

When using Quartz to schedule a task, the task trigger time is defined by a Cron expression. Now you need to send notifications before the task is executed (e.g. 15 minutes, 1 day, or 1 week in advance) without modifying the front-end code.

Cron expressions that directly calculate notification time are more complicated and lack ready-made tools. Therefore, the best solution is: create a new Quartz task . The Cron expression of this new task is set to the specified time point before the original task execution time. When a new task is triggered, a notification can be sent.

Easily generate the required Cron expressions with AI tools. Simply provide the target time point to the AI ​​tool (for example, the original task execution time is 15 minutes ahead of time) to get the corresponding Cron expression and apply it to the newly created Quartz task.

This method can not only realize the notification function before task execution, but also maintain the integrity and stability of the front-end code and avoid unnecessary modifications.

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