Node-RED:Рецепты/Как публиковать сообщения в топик: различия между версиями
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=Как публиковать сообщения в топик<ref>[https://cookbook.nodered.org/mqtt/publish-to-topic cookbook.nodered.org - Publish messages to a topic]</ref>= | =Как публиковать сообщения в топик<ref>[https://cookbook.nodered.org/mqtt/publish-to-topic cookbook.nodered.org - Publish messages to a topic]</ref>= | ||
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[[File:nodered_recipe_publish-to-topic.png|center]] | [[File:nodered_recipe_publish-to-topic.png|center]] | ||
<syntaxhighlight lang="javascript | <syntaxhighlight lang="javascript"> | ||
[{"id":"9c138886.116928","type":"mqtt out","z":"eda2a949.74ea98","name":"","topic":"sensors/livingroom/temp","qos":"","retain":"","broker":"61de5090.0f5d9","x":430,"y":100,"wires":[]},{"id":"ff654e7f.32e9e","type":"inject","z":"eda2a949.74ea98","name":"temperature","topic":"","payload":"22","payloadType":"num","repeat":"","crontab":"","once":false,"x":230,"y":100,"wires":[["9c138886.116928"]]},{"id":"61de5090.0f5d9","type":"mqtt-broker","z":"","broker":"localhost","port":"1883","clientid":"","usetls":false,"compatmode":true,"keepalive":"60","cleansession":true,"willTopic":"","willQos":"0","willPayload":"","birthTopic":"","birthQos":"0","birthPayload":""}] | [{"id":"9c138886.116928","type":"mqtt out","z":"eda2a949.74ea98","name":"","topic":"sensors/livingroom/temp","qos":"","retain":"","broker":"61de5090.0f5d9","x":430,"y":100,"wires":[]},{"id":"ff654e7f.32e9e","type":"inject","z":"eda2a949.74ea98","name":"temperature","topic":"","payload":"22","payloadType":"num","repeat":"","crontab":"","once":false,"x":230,"y":100,"wires":[["9c138886.116928"]]},{"id":"61de5090.0f5d9","type":"mqtt-broker","z":"","broker":"localhost","port":"1883","clientid":"","usetls":false,"compatmode":true,"keepalive":"60","cleansession":true,"willTopic":"","willQos":"0","willPayload":"","birthTopic":"","birthQos":"0","birthPayload":""}] | ||
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=См.также= | =См.также= | ||
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=Внешние ссылки= | =Внешние ссылки= | ||
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[[Категория:Рецепты Node-RED]] | [[Категория:Рецепты Node-RED]] | ||
[[Категория:Рецепты]] | [[Категория:Рецепты]] | ||
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Текущая версия от 18:25, 14 мая 2023
Перевод: Максим Кузьмин
Проверка/Оформление/Редактирование: Мякишев Е.А.
Как публиковать сообщения в топик[1]
Проблема
Вам нужно опубликовать сообщение в топик MQTT-брокера.
Решение
Воспользуйтесь для этого нодой «MQTT output».
Пример
[{"id":"9c138886.116928","type":"mqtt out","z":"eda2a949.74ea98","name":"","topic":"sensors/livingroom/temp","qos":"","retain":"","broker":"61de5090.0f5d9","x":430,"y":100,"wires":[]},{"id":"ff654e7f.32e9e","type":"inject","z":"eda2a949.74ea98","name":"temperature","topic":"","payload":"22","payloadType":"num","repeat":"","crontab":"","once":false,"x":230,"y":100,"wires":[["9c138886.116928"]]},{"id":"61de5090.0f5d9","type":"mqtt-broker","z":"","broker":"localhost","port":"1883","clientid":"","usetls":false,"compatmode":true,"keepalive":"60","cleansession":true,"willTopic":"","willQos":"0","willPayload":"","birthTopic":"","birthQos":"0","birthPayload":""}]
Разбор
Для публикации сообщения в заранее настроенный топик можно воспользоваться нодой «MQTT output» и связанной с ней нодой «MQTT config».
См.также
Внешние ссылки
