Cron表达式解析
解释 Cron 含义并推算后续执行时间。
关于「Cron表达式解析」
它属于「开发辅助」分类：前端与后端开发中经常用到的小工具。
完全免费、无需注册；所有处理都在浏览器本地完成，文件不会上传到任何服务器。
相关关键词：Cron表达式解析、开发辅助、cron、定时、表达式、在线工具、免费
如何使用「Cron表达式解析」
- 打开工具：打开「Cron表达式解析」页面，无需注册、无需安装任何软件。
- 准备输入：准备好要处理的内容或文件：文本可直接粘贴，文件可拖入页面（本工具属于「开发辅助」）。
- 填入内容：把内容粘贴进输入框，或把文件拖入页面；也可以点击「示例」先填入样例数据试一下。
- 设置选项并处理：按需调整页面上的选项，然后点击处理 / 转换 / 生成按钮。
- 获取结果：处理完全在浏览器本地完成，结果可直接复制或下载，文件不会上传到任何服务器。
常见问题
- 为什么只支持 5 段？
- 常见 Linux/类 Unix 计划任务为 5 段；带秒的 6 段（如 Quartz）暂未支持。
- 日和星期都为 * 时有冲突吗？
- 二者为“或”关系（任一项匹配即触发）；这是标准 cron 语义。
Cron Expression Parser (English)
Explain cron and predict next run times.
Belongs to “Dev Tools”: Small utilities frequently used in front-end and back-end development.
Free, no sign-up; everything runs locally in your browser and files are never uploaded.
Keywords: Cron Expression Parser, Dev Tools, cron, schedule, expression, online tool, free
How to use it
- Open the tool：Open the “Cron Expression Parser” page — no sign-up and nothing to install.
- Prepare the input：Prepare the content or file to process: paste text or drop a file onto the page (this tool belongs to “Dev Tools”).
- Provide the input：Paste your content into the input box or drop a file onto the page; you can also click “Sample” to try example data first.
- Adjust options and run：Adjust the options if needed, then click the process / convert / generate button.
- Get the result：Everything runs locally in your browser; copy or download the result — your files are never uploaded.
FAQ
- Why only 5 fields?
- Common Linux/Unix cron uses 5 fields; the 6-field form with seconds (e.g. Quartz) is not yet supported.
- Conflict when both day and weekday are *?
- They are an “OR” (either match triggers); this is standard cron semantics.
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