Node-Red物联网教程10:上传数据到阿里云物联网平台

1.创建Node-Red应用

const http = require('http')
const express = require('express')
const RED = require('node-red')
const path = require("path")
const iot = require('alibabacloud-iot-device-sdk')
const userSettings = require('./userSettings')

const app = express()

app.get('/', function (req, res) {
    res.send('hello world')
})
JSON.stringify

const device = iot.device({
    productKey: userSettings.productKey,
    deviceName: userSettings.deviceName,
    deviceSecret: userSettings.deviceSecret,
})

const server = http.createServer(app)
const nodePath = path.join(__dirname, 'nodered')
const nodeSettings = {
    httpAdminRoot: '/red',
    httpNodeRoot: '/api',
    userDir: nodePath,
    functionGlobalContext: {
       device 
    }
}

RED.init(server, nodeSettings)

app.use(nodeSettings.httpAdminRoot, RED.httpAdmin)
app.use(nodeSettings.httpNodeRoot, RED.httpNode)

server.listen(3000, function () {
    console.log('server is running on port:3000')
})

RED.start()

2.Node-Red中配置

打开浏览器,地址栏输入:localhost:3000/red

Node-Red节点程序

[{"id":"e71c589c.228678","type":"tab","label":"流程1","disabled":false,"info":""},{"id":"1731447b.019a8c","type":"inject","z":"e71c589c.228678","name":"","topic":"","payload":"","payloadType":"date","repeat":"5","crontab":"","once":false,"onceDelay":0.1,"x":270,"y":160,"wires":[["21eeadc.da4cf52"]]},{"id":"21eeadc.da4cf52","type":"function","z":"e71c589c.228678","name":"","func":"msg.payload=Math.round(Math.random()*1000)\nreturn msg;","outputs":1,"noerr":0,"x":510,"y":160,"wires":[["1629134a.1252dd","444b14a.503e8ec"]]},{"id":"1629134a.1252dd","type":"function","z":"e71c589c.228678","name":"上报属性","func":"const device=global.get('device')\n\ndevice.postProps({\n          \"temp\":msg.payload\n      },res=>{\n          console.log(res)\n          flow.set('flag',true)\n          flow.set('res',res)\n})\n\nlet flag=flow.get('flag')\nlet res=flow.get('res')\n\nif(flag==true){\n    msg.payload={\n        code:res.code,\n        message:res.message\n    }\n    flow.set('flag',false)\n}else{\n    msg=null\n}\n\nreturn msg\n","outputs":1,"noerr":0,"x":770,"y":320,"wires":[["14fe3247.c62eee"]]},{"id":"14fe3247.c62eee","type":"debug","z":"e71c589c.228678","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","x":770,"y":460,"wires":[]},{"id":"444b14a.503e8ec","type":"debug","z":"e71c589c.228678","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","x":780,"y":160,"wires":[]}]

点击部署后,就能上传数据到阿里云物联网平台了.