作者：zhanhailiang 日期：-11-16
本文将介绍怎样使用Node.js实现文件上传功能。
1. 初始化项目信息：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: (/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": "/billfeller/nodejs-upload-image-demo.git"},"author": "billfeller","license": "MIT","bugs": {"url": "/billfeller/nodejs-upload-image-demo/issues"},"homepage": "/billfeller/nodejs-upload-image-demo"}Is this ok? (yes) yes
2. 改动package.json，配置启动命令：
"scripts": { "start": "node index.js" },
3. 安装依赖模块：npm install formidable –save
4. 功能实现：
index.js——统一入口，包含请求处理器注冊； server.js——server模块，包含server创建，监听请求，运行路由策略； router.js——路由策略，依据请求url路由到对应的处理器进行请求处理； requestHandler.js——请求处理器；
完整源代码请见：/billfeller/nodejs-upload-image-demo
5. 启动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.jsserver is starting
6. 通过浏览器訪问并上传图片：
6. 參考：
Node入门 nodebeginner
