Uploading files with Node.js and Multer can be a very useful feature for your web application. The Multer library is a middleware for Express.js that makes it easy to handle file uploads. In this tutorial, I will guide you through the process of setting up Multer in your Node.js application and uploading files.
Step 1: Install Node.js and Express.js
Before we can get started with Multer, we need to make sure we have Node.js and Express.js installed. If you haven’t already, you can download and install Node.js from the official website (https://nodejs.org) and create a new Express.js project by running the following commands in your terminal:
npm install expressStep 2: Install Multer
Next, we need to install Multer by running the following command in your project directory:
npm install multerStep 3: Set up Multer in your Express.js app
Now that we have Multer installed, we need to set it up in our Express.js app. First, require the Multer module and create an instance of Multer in your app.js file:
const express = require('express');
const multer = require('multer');
const app = express();
const upload = multer({ dest: 'uploads/' }); // specify the upload folderStep 4: Create a file upload route
Next, create a file upload route in your Express.js app. This route will handle the file upload request from the client and save the file to the specified destination folder. Here is an example of a file upload route:
app.post('/upload', upload.single('file'), (req, res) => {
res.status(200).send('File uploaded successfully');
});In this route, we are using the upload.single('file') method to handle a single file upload. The file parameter is the name of the file input field in the HTML form.
Step 5: Create an HTML form for file upload
Now that we have set up the file upload route, we need to create an HTML form that allows users to upload files to your Express.js app. Here is an example of an HTML form:
<!DOCTYPE html>
<html>
<head>
<title>File Upload</title>
</head>
<body>
<form action="/upload" method="POST" enctype="multipart/form-data">
<input type="file" name="file">
<button type="submit">Upload</button>
</form>
</body>
</html>Step 6: Test the file upload functionality
Finally, start your Express.js app by running the following command in your terminal:
node app.jsOpen your web browser and navigate to http://localhost:3000 (or whichever port you specified in your Express.js app). You should see the file upload form. Choose a file and click the "Upload" button to test the file upload functionality.
If everything is set up correctly, you should see a success message indicating that the file was uploaded successfully. Check the specified upload folder to verify that the file was indeed saved.
Congratulations! You have successfully set up Multer in your Node.js and Express.js app to handle file uploads. Feel free to explore more features of Multer, such as handling multiple file uploads, setting file size limits, and customizing file naming conventions. Happy coding!
tira a macauba da boca pra falar
in node we have file system, we can use it and upload a files and images so why multer
MUCH IMPRESSED❤
Great vido
bro explainition 🔥🔥🔥
Thanks for this sir, This was my need !
const express = require('express')
const path =require('path')
const multer=require('multer')
const app = express()
const PORT= 7000;
// const upload = multer({ dest: 'uploads/' }) //middleware
app.set("view engine","ejs")
app.set("views",path.resolve("./views"))
app.use(express.urlencoded({extended:false}))
//storage the img
const storage = multer.diskStorage({
destination: function (req, file, cb) { //cb for callback fun
cb(null, "./uploads");
},
filename: function (req, file, cb) {
const uniqueSuffix = Date.now() + '-' + Math.round(Math.random() * 1E9);
// Extract the file extension from the original filename
const ext = path.extname(file.originalname);
cb(null, file.fieldname + '-' + uniqueSuffix + ext);
}
});
const upload=multer({storage})
app.get("/",(req,res)=>{
return res.render("homepage")
});
app.post("/upload",upload.single('profileImage'),(req,res)=>{
console.log(req.body);
console.log(req.file);
return res.redirect("/")
})
app.listen(PORT,()=>{
console.log(`Server is runing on ${PORT}`)
})
correct code
Bhai koi help kr do image upload folder m aara h but wo open nh hota likh k ata h file is not displayed in the text editor because it is either binsrt or uses an unsupported text encoding wot to do
understood well
Code source kaha hai bhaiya❤❤❤
Sir agr mujhe ye chahiye jb me ek bar file ko upload krke database me store krva du to refresh krne ke bad bi vo file ka name autofill rhna chahiye. Uploder khali ni hona chahiye please solve😢 ASAP
How to read the file from folder
Bhai tum to young manish paul lag rahe. Video bhi mast tha tq!
best video for understanding concept of multer
thanks bro
hey , i am trying it , but it's giving me an error ,
illegal operation on a directory , read ,{
error : -4068 ,
code : EISDIR
syscall : read }
if i need to upload video then how?
But the files are saved in our server, which may increase it's size how to upload this to database
how can i delete existing upload folder with file and create another empty upload folder on reload until file is send from frontend
can you guide me how node js file containing multer should be deployed on netlify ? as it run into error it could not find upload folder