NodeJS MQTT 最小订阅示例（JSON 消息）

mqtt_subscribe.js

const mqtt = require('mqtt')
const client = mqtt.connect('mqtt://user:password@192.168.178.103')

client.on('connect', () => {
  client.subscribe('mytopic');
})

client.on('message', (topic, message) => {
  console.log(topic, JSON.parse(message))
})

const mqtt = require('mqtt')
const client = mqtt.connect('mqtt://user:password@192.168.178.103')

client.on('connect', () => {
  client.subscribe('mytopic');
})

client.on('message', (topic, message) => {
  console.log(topic, JSON.parse(message))
})

如果需要，你可以使用以下命令安装 mqtt 库

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