How to build reliable cloud applications with React and Microsoft Azure

How to build reliable cloud applications using React and Microsoft Azure

With the development of cloud computing, more and more applications are beginning to migrate to the cloud. In this process, it is very important to choose a reliable and efficient development framework. React, as a popular front-end framework, has features such as efficient component development and virtual DOM updates, while Microsoft Azure is a flexible cloud service platform that provides powerful computing, storage, and deployment capabilities. This article will introduce how to build reliable cloud applications using React and Microsoft Azure, and provide some specific code examples.

1. Create a React application

First, we need to create a basic React application. You can use the create-react-app tool to quickly initialize a React project. Execute the following command in the command line:

npx create-react-app my-app
cd my-app
npm start

This will create a React application named my-app locally and start the development server. Next, we can write the React component in the src/App.js file.

2. Connect to Azure service

In order to connect to Azure service, we need to use the JS SDK provided by Azure. First, we need to install the necessary dependent libraries in the terminal:

npm i @azure/identity @azure/storage-blob

Then, import the required modules in the src/App.js file:

import { DefaultAzureCredential } from "@azure/identity";
import { BlobServiceClient } from "@azure/storage-blob";

Next, we can use the following The code creates a BlobServiceClient instance:

// 获取Azure身份凭证
const credential = new DefaultAzureCredential();

// 创建BlobServiceClient实例
const blobServiceClient = new BlobServiceClient(
  "https://youraccount.blob.core.windows.net/",
  credential
);

In this way, we successfully connected to the Azure Blob storage service.

3. Upload files to Azure Blob Storage

Next, we can use the following code to upload the file to Azure Blob Storage:

// 上传文件
async function uploadFile(file) {
  // 获取Blob容器
  const containerClient = blobServiceClient.getContainerClient("containerName");

  // 生成Blob名称
  const blobName = `${Date.now()}-${file.name}`;

  // 获取Blob客户端
  const blobClient = containerClient.getBlobClient(blobName);

  // 上传文件
  await blobClient.blockBlobClient.uploadData(file);
}

In this way, we successfully upload the file Uploaded to Azure Blob Storage.

4. Download files from Azure Blob Storage

Next, we can use the following code to download files from Azure Blob Storage:

// 下载文件
async function downloadFile(blobName) {
  // 获取Blob容器
  const containerClient = blobServiceClient.getContainerClient("containerName");

  // 获取Blob客户端
  const blobClient = containerClient.getBlobClient(blobName);

  // 下载文件
  const response = await blobClient.download();
  const buffer = await response.blobBody;

  // 创建下载链接
  const downloadUrl = URL.createObjectURL(buffer);

  // 打开下载链接
  window.open(downloadUrl);
}

In this way, we successfully download files from Azure Download files from blob storage.

5. Deploy to Azure static website

Finally, we can use the static website service provided by Azure to deploy the React application to the cloud. First, execute the following command in the terminal to install the necessary dependent libraries:

npm i -g azure-storage-cli

Then, create a file named ".env" in the project root directory and add the following content:

AZURE_STORAGE_ACCOUNT=youraccount
AZURE_STORAGE_KEY=yourkey

Next, execute the following command in the terminal to deploy the React application:

az storage cors add --methods OPTIONS GET HEAD POST PUT --origins "*" --allowed-headers "*" --exposed-headers "*" --max-age 200 --services b
az storage blob service-properties update --account-name youraccount --static-website --404-document index.html --index-document index.html
az storage blob service-properties update --account-name youraccount --static-website --default-index-document-path index.html
az storage blob upload-batch --destination "web" --source build

In this way, we have successfully deployed the React application to the Azure static website.

Conclusion

This article introduces how to use React and Microsoft Azure to build reliable cloud applications. By connecting to Azure services we can easily upload and download files. By deploying to Azure Static Website, we can quickly deploy React applications to the cloud. I hope this article was helpful and welcome any questions and suggestions.

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