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发布消息到主题

问题

你想要向一个代理的 MQTT 主题发布一条消息。

解决方案

使用 MQTT 输出 节点向一个主题发布消息。

示例

[{"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":""}]

讨论

带有关联的 MQTT 配置 节点并连接到 MQTT 代理的 MQTT 输出 节点可以用于向预配置的主题发布消息。