文件上传
以下我们创建一个用于上传文件的表单，使用 POST 方法，表单 enctype 属性设置为 multipart/form-data。
index.htm 文件代码修改如下：
<html> <head> <title>文件上传表单</title> </head> <body> <h3>文件上传：</h3> 选择一个文件上传: <br /> <form action="/file_upload" method="post" enctype="multipart/form-data"> <input type="file" name="image" size="50" /> <br /> <input type="submit" value="上传文件" /> </form> </body> </html>
server.js 文件代码修改如下:
var express = require('express'); var app = express(); var fs = require("fs"); var bodyParser = require('body-parser'); var multer = require('multer'); app.use(express.static('public')); app.use(bodyParser.urlencoded({ extended: false })); app.use(multer({ dest: '/tmp/'}).array('image')); app.get('/index.htm', function (req, res) { res.sendFile( __dirname + "/" + "index.htm" ); }) app.post('/file_upload', function (req, res) { console.log(req.files[0]); // 上传的文件信息 var des_file = __dirname + "/" + req.files[0].originalname; fs.readFile( req.files[0].path, function (err, data) { fs.writeFile(des_file, data, function (err) { if( err ){ console.log( err ); }else{ response = { message:'File uploaded successfully', filename:req.files[0].originalname }; } console.log( response ); res.end( JSON.stringify( response ) ); }); }); }) 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) })
执行以上代码：
$ node server.js 应用实例，访问地址为 http://0.0.0.0:8081
浏览器访问 http://127.0.0.1:8081/index.htm