How to Import Excel Files to MongoDB Using Node.js and Express

In this tutorial provides a step-by-step guide on how to import Excel files to MongoDB using Node.js and Express. Node.js is a JavaScript runtime environment that allows you to build and run JavaScript applications outside of a web browser. Express is a popular web framework for Node.js that makes it easy to build and run web applications. MongoDB is a NoSQL database that is known for its scalability and flexibility.

To import Excel files into MongoDB using Node.js and Express, follow these steps

  • Step 1: Create Node Express js App
  • Step 2: Install Required Node Modules
  • Step 3: Create Model
  • Step 4: Create Excel File Upload HTML Markup Form
  • Step 5: Import Modules in App.js
  • Step 6: Start App Server

Step 1: Create Node Express js App

Execute the following command on terminal to create node js app:

mkdir my-app
cd my-app
npm init -y

Step 2: Install Required Node Modules

Execute the following command on the terminal to express ejs body-parser mongoose convert-excel-to-json dependencies:

npm install -g express-generator
npx express --view=ejs

npm install mongoose multer body-parser 
npm install convert-excel-to-json

Step 3: Create Model

Create Models directory and inside this directory create userModel.js file; Then add following code into it:

var mongoose  =  require('mongoose');  
var excelSchema = new mongoose.Schema({  
module.exports = mongoose.model('userModel',excelSchema); 

Step 4: Create Excel File Upload HTML Markup Form

Create a form with a `file input` element that allows us to choose the Excel file and a button to submit the form; So create index.html file and add the following code into it:

<!DOCTYPE html>
<html lang="en">
      <title>Node js upload/Import excel file to Mongodb database</title>
      <meta charset="UTF-8">
      <meta name="viewport" content="width=device-width, initial-scale=1">
      <h1>Node js upload Excel file to Mongodb database -</h1>
      <form action="/uploadfile" enctype="multipart/form-data" method="post">
        <input type="file" name="uploadfile" accept='application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, application/' >
        <input type="submit" value="Upload Excel">

Step 5: Import Modules in App.js

Import express, body-parser, mongoose, multer, convert-excel-to-json dependencies in app.js; as shown below:

var express     = require('express');  
var mongoose    = require('mongoose');  
var multer      = require('multer');  
var path        = require('path');  
var userModel    = require('./models/userModel');  
var excelToJson = require('convert-excel-to-json');
var bodyParser  = require('body-parser');  
var storage = multer.diskStorage({  
var uploads = multer({storage:storage});  
//connect to db  
.then(()=>console.log('connected to db'))  
//init app  
var app = express();  
//set the template engine  
app.set('view engine','ejs');  
//fetch data from the request  
//static folder  
//route for Home page
app.get('/', (req, res) => {
  res.sendFile(__dirname + '/index.html');
// Upload excel file and import to mongodb'/uploadfile', upload.single("uploadfile"), (req, res) =>{
    importExcelData2MongoDB(__dirname + '/uploads/' + req.file.filename);
// Import Excel File to MongoDB database
function importExcelData2MongoDB(filePath){
    // -> Read Excel File to Json Data
    const excelData = excelToJson({
        sourceFile: filePath,
            // Excel Sheet Name
            name: 'Customers',
            // Header Row -> be skipped and will not be present at our result object.
               rows: 1
            // Mapping columns to keys
            columnToKey: {
                A: '_id',
                B: 'name',
                C: 'address',
                D: 'age'
    // -> Log Excel Data to Console
            { _id: 1, name: 'Jack Smith', address: 'Massachusetts', age: 23 },
            { _id: 2, name: 'Adam Johnson', address: 'New York', age: 27 },
            { _id: 3, name: 'Katherin Carter', address: 'Washington DC', age: 26 },
            { _id: 4, name: 'Jack London', address: 'Nevada', age: 33 },
            { _id: 5, name: 'Jason Bourne', address: 'California', age: 36 } 
    // Insert Json-Object to MongoDB
//assign port  
var port = process.env.PORT || 3000;  
app.listen(port,()=>console.log('server run at port '+port)); 

Step 6: Start App Server

You can use the following command to start node js app server:

//run the below command

npm start

after run this command open your browser and hit

This tutorial, you have learned how to import excel file data into MongoDB in Node js + Express. 

#nodejs #mongodb 

How to Import Excel Files to MongoDB Using Node.js and Express
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