【发布时间】：2015-10-31 08:52:19
【问题描述】：
我正在尝试为一个简单的 MEAN 堆栈应用程序上传 multipart/form-data。将所有内容放在一个文件中并运行它可以正常工作。
Server.js
var express = require('express');
var multer = require('multer');
var storage = multer.diskStorage({
destination: function (req, file, cb) {
cb(null, 'uploads/');
},
filename: function (req, file, cb) {
switch(file.mimetype) {
case 'image/jpg' :
case 'image/jpeg':
case 'image/gif':
var extension = file.mimetype.split("/");
extension = extension[extension.length-1];
break
case 'video/quicktime':
var extension = 'mov';
break
case 'video/mp4':
var extension = 'mp4';
break
default:
var extension = 'jpeg';
}
cb(null, file.fieldname + '-' + Date.now() + "." + extension);
}
});
var upload = multer({ storage: storage });
var path = require('path');
var app = express();
var segmentUpload = upload.fields([{ name: 'segmentVideo', maxCount: 1}, { name: 'segmentStill', maxCount: 1}, { name: 'segmentGif', maxCount: 1}])
app.post('/photos/upload', segmentUpload, function (req, res, next) {
console.log(req);
console.log(req.files['segmentVideo'][0]);
console.log(req.files['segmentStill'][0]);
console.log(req.files['segmentGif'][0]);
console.log(req.body.title);
});
app.get('/', function(req, res) {
res.sendfile('./index.html');
});
app.listen(8080);
console.log("App listening on port 8080");
index.html
<body>
<form action="/photos/upload" method="post" enctype="multipart/form-data">
title: <input type="text" name="title"> <br><br>
Select video to upload:
<input type="file" name="segmentVideo" id="fileToUpload"> <br><br>
Select jpeg to upload:
<input type="file" name="segmentStill" id="fileToUpload"><br><br>
Select gif to upload:
<input type="file" name="segmentGif" id="fileToUpload"><br><br>
<input type="submit" value="Upload Image" name="submit">
</form>
但是当我尝试将 multer 集成到我的节点路由中时，我无法让我的应用接受 multipart/form-data。
app/routes.js
var Video = require('./models/video');
var multer = require('multer');
var storage = multer.diskStorage({
destination: function (req, file, cb) {
cb(null, 'uploads/');
},
filename: function (req, file, cb) {
switch(file.mimetype) {
case 'image/jpg' :
case 'image/jpeg':
case 'image/gif':
var extension = file.mimetype.split("/");
extension = extension[extension.length-1];
break
case 'video/quicktime':
var extension = 'mov';
break
case 'video/mp4':
var extension = 'mp4';
break
default:
var extension = 'jpeg';
}
console.log("new extension: " + extension);
cb(null, file.fieldname + '-' + Date.now() + "." + extension);
}
});
var upload = multer({ storage: storage });
module.exports = function(app) {
// api --------------------------------------
// get all todos
app.get('/api/videos', function(req,res){
// use mongoose to get all todos in the database
Video.find(function(err, videos){
// if there is an error, send the error
if (err)
res.send(err);
res.json(videos);
});
});
var segmentUpload = upload.fields([{ name: 'segmentVideo', maxCount: 1}, { name: 'segmentStill', maxCount: 1}, { name: 'segmentGif', maxCount: 1}])
app.post('/api/videos', segmentUpload, function(req, res){
// create a video
Video.create({
title : req.body.title,
description : req.body.description,
category : req.body.category,
day : req.body.day,
videoUrl : req.body.videoUrl,
stillUrl : req.body.stillUrl,
gifUrl : req.body.gifUrl,
airReady : false
}, function(err, video) {
if (err)
res.send(err)
// get and return all the todos after you create another
Video.find(function(err, videos){
if (err)
res.send(err)
res.json(videos);
});
});
});
// delete a todo
app.delete('/api/videos/:video_id', function(req,res){
Video.remove({
_id : req.params.video_id
}, function(err, video) {
if (err)
res.send(err);
// get and return all the todos after you delete one
Video.find(function(err, videos) {
if (err)
res.send(err)
res.json(videos);
});
});
});
// edit a todo
app.put('/api/videos/:video_id', function(req,res){
Video.findByIdAndUpdate(req.params.video_id,
{ $set: { title: req.body.title
}},
function(err, video){
if (err)
res.send(err)
// get and return all todos after edit
Video.find(function(err, videos){
if (err)
res.send(err)
res.json(videos);
});
});
});
// find -------------------------------------------------------------
app.get('*', function(req, res) {
res.sendfile('./public/index.html'); // load the single view file (angular will handle the page changes on the front-end)
});
};
我收到一个错误：
TypeError: Cannot read property 'title' of undefined
这是我关于堆栈溢出的第一篇文章，但我感谢所有支持！
【问题讨论】：
-
您能否指定出现此错误的行。它有助于调试
标签： angularjs node.js multipartform-data multer