In this paper, a case Share:
IoTHub 10 minutes to upload files through Device SDK
Video Station B: https: //www.bilibili.com/video/av90224073/
The main contents of this paper are as follows:
1. Understand the IoT Hub where the files are stored in the
2. Use Node.js Device SDK upload TXT file
3. IOT device to view files uploaded in Storage
Graphic content:
This case Reference: https://docs.azure.cn/zh-cn/iot-hub/iot-hub-node-node-file-upload
1. Device Device SDK to upload a file Azure IoT Hub stored in the Storage, configure Storage containers and store files with a good advance:
2. Use Node.js SDK upload files
Download and install Node.js http://nodejs.cn/
Installation Node.js SDK:
npm install azure-iot-device azure-iot-device-mqtt --saveFIG installation process is as follows:
New folder, the new upload_to_blob.js, the following sample code in the copy-in upload_to_blob.js
'use strict';
var Protocol = require('azure-iot-device-mqtt').Mqtt;
var Client = require('azure-iot-device').Client; var fs = require('fs'); var connectionString = 'YOUR DEIVCE CONNECT STRING'; if (!connectionString) { console.log('Please set the DEVICE_CONNECTION_STRING environment variable.'); process.exit(-1); } var filePath = 'log.txt'; var client = Client.fromConnectionString(connectionString, Protocol); fs.stat(filePath, function (err, fileStats) { if (err) { console.error('could not read file: ' + err.toString()); process.exit(-1); } else { var fileStream = fs.createReadStream(filePath); client.uploadToBlob('testblob.txt', fileStream, fileStats.size, function (err) { fileStream.destroy(); if (err) { console.error('error uploading file: ' + err.constructor.name + ': ' + err.message); process.exit(-1); } else { console.log('Upload successful'); process.exit(0); } }); } });
Creating package.json file using the following command. Accept all the defaults:
npm init
Creating log.txt in the folder, the content freely.
Thus, should the folder as shown below:
Run the following command to run the client code:
node upload_to_blob.jsProgram prompts as follows, indicating successful upload files:
Enter Azure Storage container, check the upload results:
