之前一篇文章 时发现 Express.js 更新到 3.4.x 了,运行的时候出现警告

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connect.multipart() will be removed in connect 3.0
visit https://github.com/senchalabs/connect/wiki/Connect-3.0 for alternatives
connect.limit() will be removed in connect 3.0

按照 Wiki 的指引看了下 multipartyconnect-multipartyformidable,最终选用了 formidable 因为说明看起来很碉堡的样子

简单写了两个路由控制,按照 node-formidable 的示例加上了打印文件上传信息的几个语句,运行时发现程序 hang 了…

Google 许久无果——找到的结果基本都是要你注释掉 app.use(express.bodyParser()),而我已经是 express 3.4 所以早就没有 bodyParser 了。回去又看 formidable 给的例子,于是发现自己犯二了…——

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<form action="/upload" enctype="multipart/form-data" method="post">

真是个バカ!

立马给 index.ejs 中的 form 部分加上了 enctype="multipart/form-data",重试,成功。 于是就这么解决了(被打飞

主程序

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/**
* Module dependencies.
*/


var express = require('express');
var http = require('http');
var path = require('path');
var util = require('util');
var formidable = require('formidable');

var app = express();

// all environments
app.set('port', process.env.PORT || 3000);
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');
app.use(express.favicon());
app.use(express.logger('dev'));
app.use(express.json());
app.use(express.urlencoded());
app.use(express.methodOverride());
app.use(app.router);
app.use(express.static(path.join(__dirname, 'public')));

// development only
if ('development' == app.get('env')) {
app.use(express.errorHandler());
}

app.get('/', function(req, res) {
res.render('index');
});

app.post('/upload', function(req, res) {
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');
res.end(util.inspect({fields: fields, files: files}));
});
});

http.createServer(app).listen(app.get('port'), function(){
console.log('Express server listening on port ' + app.get('port'));
});

以及一个简单的 index.ejs

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<!DOCTYPE html>
<html>
<head>
<title>Upload test</title>
<link rel='stylesheet' href='/stylesheets/style.css' />
</head>
<body>
<h1>Test formidable</h1>

<form action="/upload" method="post" enctype="multipart/form-data">
<input type="text" name="textfield"/>
<input type="file" name="file" />
<button type="submit">Upload</button>
</form>
</body>
</html>

PS. 后来发现确实有人遇到这个问题了…