Node.js新手教程——怎樣實現檔案上傳功能

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  zhanhailiang 日期：2014-11-16

本文將介紹怎樣使用Node.js實現檔案上傳功能。

1. 初始化項目資訊：npm init

[root@~/wade/nodejs/nodejs-upload-image-demo]# npm initThis utility will walk you through creating a package.json file.It only covers the most common items, and tries to guess sane defaults. See `npm help json` for definitive documentation on these fieldsand exactly what they do. Use `npm install <pkg> --save` afterwards to install a package andsave it as a dependency in the package.json file. Press ^C at any time to quit.name: (nodejs-upload-image-demo) version: (1.0.0) description: how to use node.js to upload an imageentry point: (index.js) test command: git repository: (https://github.com/billfeller/nodejs-upload-image-demo.git) keywords: author: billfellerlicense: (ISC) MITAbout to write to /root/wade/nodejs/nodejs-upload-image-demo/package.json: {  "name": "nodejs-upload-image-demo",  "version": "1.0.0",  "description": "how to use node.js to upload an image",  "main": "index.js",  "scripts": {    "test": "echo \"Error: no test specified\" && exit 1"  },  "repository": {    "type": "git",    "url": "https://github.com/billfeller/nodejs-upload-image-demo.git"  },  "author": "billfeller",  "license": "MIT",  "bugs": {    "url": "https://github.com/billfeller/nodejs-upload-image-demo/issues"  },  "homepage": "https://github.com/billfeller/nodejs-upload-image-demo"}  Is this ok? (yes) yes

2. 改動package.json，配置啟動命令：

"scripts": {     "start": "node index.js" },

3. 安裝相依模組：npm install formidable –save

4. 功能實現：

• index.js——統一入口，包含要求處理常式注冊；
• server.js——server模組，包含server建立，監聽請求，運行路由策略；
• router.js——路由策略，依據請求url路由到對應的處理器進行請求處理；
• requestHandler.js——要求處理常式；

  完整原始碼請見：https://github.com/billfeller/nodejs-upload-image-demo

5. 啟動server：

[root@~/wade/nodejs/nodejs-upload-image-demo]# npm start > nodejs-upload-image-demo@1.0.0 start /root/wade/nodejs/nodejs-upload-image-demo> node index.js server is starting

6. 通過瀏覽器訪問並上傳圖片：

6. 參考：

• Node入門
• nodebeginner

Node.js新手教程——怎樣實現檔案上傳功能