Welcome Folks today in this tutorial we will be uploading files in Node.js Express Application using fileupload library. The step by step video is shown below to follow the instructions to make this application

express-fileupload

Simple express middleware for uploading files.

Install

Install
# With NPM 
npm i express-fileupload
 
# With Yarn 
yarn add express-fileupload

Usage

When you upload a file, the file will be accessible from req.files.

• You’re uploading a file called car.jpg
• Your input’s name field is foo: <input name="foo" type="file" />
• In your express server request, you can access your uploaded file from req.files.foo:

app.post('/upload', function(req, res) {
  console.log(req.files.foo); // the uploaded file object
});

The req.files.foo object will contain the following:

• req.files.foo.name: “car.jpg”
• req.files.foo.mv: A function to move the file elsewhere on your server. Can take a callback or return a promise.
• req.files.foo.mimetype: The mimetype of your file
• req.files.foo.data: A buffer representation of your file, returns empty buffer in case useTempFiles option was set to true.
• req.files.foo.tempFilePath: A path to the temporary file in case useTempFiles option was set to true.
• req.files.foo.truncated: A boolean that represents if the file is over the size limit
• req.files.foo.size: Uploaded size in bytes
• req.files.foo.md5: MD5 checksum of the uploaded file

app.use(fileUpload({
  limits: { fileSize: 50 * 1024 * 1024 },
}));

app.use(fileUpload({
    useTempFiles : true,
    tempFileDir : '/tmp/'
}));