初始化項目
新建一個文件夾,運行 npm init
初始化項目
mkdir okadaGo
cd okadaGo
npm init
按照提示輸入一些項目的相關信息
D:\web\node>mkdir okadaGo D:\web\node>cd okadaGo D:\web\node\okadaGo>npm init This utility will walk you through creating a package.json file. It only covers the most common items, and tries to guess sensible defaults See `npm help json` for definitive documentation on these fields and exactly what they do. Use `npm install <pkg> --save` afterwards to install a package and save it as a dependency in the package.json file. Press ^C at any time to quit. name: (okadaGo) Sorry, name can no longer contain capital letters. name: (okadaGo) okada_go version: (1.0.0) description: entry point: (index.js) test command: git repository: keywords: author: license: (ISC) About to write to D:\web\node\okadaGo\package.json: { "name": "okada_go", "version": "1.0.0", "description": "", "main": "index.js", "scripts": { "test": "echo \"Error: no test specified\" && exit 1" }, "author": "", "license": "ISC" } Is this ok? (yes) D:\web\node\okadaGo>
目錄結構
建立三個文件夾:public、routes 和 views。
項目的文件結構如下
├─models/ ├─public/ ├─routes/ ├─views/ ├─index.js └─package.json
對應文件及文件夾的用處:
models
存放操作數據庫的文件public
存放靜態文件,如 css、圖片等routes
存放路由文件views
存放模板文件index.js
程序主文件package.json
存儲項目的信息,比如項目名、描述、作者、依賴等
安裝依賴
安裝 express 框架
npm install express --save
啟動項目
進入項目的根目錄,建立一個 index.js
文件,並加入如下代碼
var express = require('express'); var app = express(); app.get('/', function(res, rep) { rep.send('Hello, word!'); }); app.listen(3000);
然后在控制台中輸入
node index.js
接着使用瀏覽器訪問 http://localhost:3000/,就可以看到效果了
