如何使用angular-file-upload在Node.js Express应用程序中上传文件

Question

I want to upload a file using angular-file-upload. But when I try to access req.body.files or req.files i get undefined .

Can anybody tell me how to get the file which is uploaded through angular-file-upload in node.js express app ?

Request Payload is as below:

Content-Disposition: form-data; name="myFile"; filename="BroadcomLogo.gif"
Content-Type: image/gif

JS Code:

$scope.upload[index] = $upload.upload({
   url : '/upload',
   method: 'POST',
   file: $scope.selectedFiles[index],
   fileFormDataName: 'myFile'
});

Node Code

upload: function(req, res) {
    console.log(req.files);
    res.send("Hello");
},

Answer 1

You need to use a middleware that parses files from a request in Node.js:

var multipart = require('connect-multiparty');
var multipartMiddleware = multipart();
app.post('/upload', multipartMiddleware,upload);

Simply put, middleware are functions that handle requests . A server created by connect.createServer can have a stack of middleware associated with it. When a request comes in, it is passed off to the first middleware function, along with a wrapped ServerResponse object and a next callback. Each middleware can decide to respond by calling methods on the response object, and/or pass the request off to the next layer in the stack by calling next() .

http://stephensugden.com/middleware_guide/

In the case of the multipart middleware, it will call the next() method so you can write your own function to respond to the request.

Of course you need to install it first: npm install connect-multiparty

They are other middlewares that handle multipart uploads:

• busboy and connect-busboy
• multiparty and connect-multiparty
• formidable
• multer

You should probably use one that is compatible with connect, as express is built on top of connect

Answer 2

使用name属性作为键在files对象中访问它：

req.files.myFile