Nodejs File upload using Multer and Expressjs
If you are build your backend using nodejs and want to upload file from your andoroid device. Below is the snippet using nodejs , multer and expressjs.
Requirements:
- Nodejs : https://nodejs.org/en/
- Expressjs : https://expressjs.com/
- Multer : https://www.npmjs.com/package/multer
const express = require('express')
const app = express()
const util = require('util')
const port = 3000;
var multer = require('multer')
//set the storage folder for the muttler
var storage = multer.diskStorage({
destination: function (req, file, cb) {
//set the upload directory
cb(null, 'upload')
},
filename: function (req, file, cb) {
//set name for the uploaded file
cb(null, file.originalname + '-' + Date.now())
}
})
var upload = multer({ storage: storage });
//GET
app.get('/', function (req, res) {
res.send("hello");
});
//upload function
//Uploaded file will be saved in the upload folder
app.post('/upload', upload.single('file'), function (req, res, next) {
console.log("file received " +req.file.filename);
res.send({upload:"success",fileName:req.file.filename});
})
//listen
app.listen(port, () => console.log(`Example app listening on port ${port}!`))
Start your node server now you can upload file to
http://localhost:3000/upload.
Use postman to test your upload file function
Postman parameter
- Select body
'content-type 'as' form-data' - Set
'key'as'file'then select file - Click send button
