Node-RED中配置周期性执行、指定时间阶段执行、指定时间执行事件

灰太狼 2023-09-30 13:03 5阅读 0赞

## 场景 ##

Node-RED简介与Windows上安装、启动和运行示例：

[Node-RED简介与Windows上安装、启动和运行示例\_霸道流氓气质的博客-CSDN博客][Node-RED_Windows_-CSDN]

在inject节点可以设置重复触发的周期性事件。

比如每两秒输出一次时间。

![21bbac470cc0c1f482d1508732696fd4.gif][]

注：

博客：  
[霸道流氓气质的博客\_CSDN博客-C\#,架构之路,SpringBoot领域博主][CSDN_-C_SpringBoot]  
关注公众号  
霸道的程序猿  
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## 实现 ##

1、周期性执行

![973a2ab324d3c5692a2d8abe79d64b8f.png][]

json示例数据

[{"id":"71107f63.c2686","type":"inject","z":"f8f370d9.7ccc3","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"2","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":190,"y":280,"wires":[["6866ece6.3b1964"]]},{"id":"6866ece6.3b1964","type":"debug","z":"f8f370d9.7ccc3","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","statusVal":"","statusType":"auto","x":420,"y":300,"wires":[]}]

2、指定时间阶段周期性执行

![603d5a11988210149bbaacd8a6ced1a8.png][]

json数据

[{"id":"2ee46c27fe222be5","type":"inject","z":"4bc32962b964d23d","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"*/1 0 * * 1,3,5","once":false,"onceDelay":0.1,"topic":"","payloadType":"date","x":190,"y":360,"wires":[["26092280afbca76a"]]},{"id":"26092280afbca76a","type":"debug","z":"4bc32962b964d23d","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","statusVal":"","statusType":"auto","x":400,"y":380,"wires":[]}]

3、指定时间执行

![da897f2665bec5dc2c138ccc6b3abf28.png][]

json数据

[{"id":"9e4a370a93991fdc","type":"inject","z":"4bc32962b964d23d","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"00 12 * * 1","once":false,"onceDelay":0.1,"topic":"","payloadType":"date","x":190,"y":500,"wires":[["4af3067548fcc9f6"]]},{"id":"4af3067548fcc9f6","type":"debug","z":"4bc32962b964d23d","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","statusVal":"","statusType":"auto","x":380,"y":540,"wires":[]}]

[Node-RED_Windows_-CSDN]: https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/121884766
[21bbac470cc0c1f482d1508732696fd4.gif]: https://img-blog.csdnimg.cn/img_convert/21bbac470cc0c1f482d1508732696fd4.gif
[CSDN_-C_SpringBoot]: https://blog.csdn.net/badao_liumang_qizhi
[973a2ab324d3c5692a2d8abe79d64b8f.png]: https://img-blog.csdnimg.cn/img_convert/973a2ab324d3c5692a2d8abe79d64b8f.png
[603d5a11988210149bbaacd8a6ced1a8.png]: https://img-blog.csdnimg.cn/img_convert/603d5a11988210149bbaacd8a6ced1a8.png
[da897f2665bec5dc2c138ccc6b3abf28.png]: https://img-blog.csdnimg.cn/img_convert/da897f2665bec5dc2c138ccc6b3abf28.png