Ubuntu18.04系统如何安装Express
Ubuntu18.04系统如何安装Express
Express是一个简洁而灵活的 node.js Web应用框架。那么在ubuntu18.04中如何安装Express呢?本文给出详细说明。
1.首先更新软件列表
sudo apt-get update
![Ubuntu18.04系统如何安装Express-1353](https://www.zoneidc.com/uploads/image/20230203/16753953577091474.png)
2.安装node.js
sudo apt install nodejs
![Ubuntu18.04系统如何安装Express-1354](https://www.zoneidc.com/uploads/image/20230203/16753953633179792.png)
3.安装npm工具
sudo apt-get install npm
![Ubuntu18.04系统如何安装Express-1355](https://www.zoneidc.com/uploads/image/20230203/16753953702765058.png)
4.安装 Express 并将其保存到依赖列表中
npm install express --save
![Ubuntu18.04系统如何安装Express-1356](https://www.zoneidc.com/uploads/image/20230203/16753953784804670.png)
5.创建名为express_demo.js的测试文件并写入测试代码
vi express_demo.js
写入
var express = require('express');
var app = express();
app.get('/', function (req, res) {
res.send('Hello World');
})
var server = app.listen(8081, function () {
var host = server.address().address
var port = server.address().port
console.log("应用实例,访问地址为 http://%s:%s", host, port)
})
![Ubuntu18.04系统如何安装Express-1357](https://www.zoneidc.com/uploads/image/20230203/16753953996435591.png)
保存退出
6.测试
node express_demo.js
![Ubuntu18.04系统如何安装Express-1358](https://www.zoneidc.com/uploads/image/20230203/16753954063777448.png)
在浏览器打开主机IP:8081可以看到
![Ubuntu18.04系统如何安装Express-1359](https://www.zoneidc.com/uploads/image/20230203/16753954178319197.png)