node.js 上传图片实例

upload.js

var formidable = require('formidable'),
	http = require('http'),
	util = require('util'),
	fs = require('fs');

http.createServer(function(req, res) {

	// 移除跨域限制
	res.setHeader('Access-Control-Allow-Origin', '*');

	if (req.url == '/upload' && req.method.toLowerCase() == 'post') {

		// parse a file upload
		var form = new formidable.IncomingForm();

		form.parse(req, function(err, fields, files) {
			res.writeHead(200, {
				'content-type': 'text/plain'
			});
			res.write('received upload:\n\n');

			// 存储图片到根目录下
			fs.rename(files.upload.path, './' + files.upload.name, function () {
				console.log('saved done');
			});
			res.end(util.inspect({
				fields: fields,
				files: files
			}));
		});
		return;
	}

	// show a file upload form
	res.writeHead(200, {
		'content-type': 'text/html'
	});
	res.end(
		'<form action="/upload" enctype="multipart/form-data" method="post">' +
		'<input type="text" name="title"><br>' +
		'<input type="file" name="upload" multiple="multiple"><br>' +
		'<input type="submit" value="Upload">' +
		'</form>'
	);
}).listen(1991);