Node js Excel Import To MongoDB Database

Node js Excel Import To MongoDB Database

Import excel file to mongodb using node js + express; Through this tutorial, you will learn how to import excel file data into MongoDB in Node js + Express. 

Import excel file to mongodb using node js + express tutorial, you will also learn how to upload excel file into Node js + express app. Then read excel file data using npm convert-excel-to-json package and import it in mongodb database with node js + express app.

Import Excel File to MongoDB using Node js + Express

  • 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

body-parser – Node.js request body parsing middleware which parses the incoming request body before your handlers, and make it available under req.body property. In other words, it simplifies the incoming request.

Express-EJS– EJS is a simple templating language which is used to generate HTML markup with plain JavaScript. It also helps to embed JavaScript to HTML pages

Mongoose – Mongoose is a MongoDB object modeling tool designed to work in an asynchronous environment. Mongoose supports both promises and callbacks.

Multer – Multer is a node.js middleware for handling multipart/form-data , which is primarily used for uploading files. It is written on top of busboy for maximum efficiency.

convert-excel-to-json –  Convert Excel to JSON, mapping sheet columns to object keys.

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({  
    name:{  
        type:String  
    },  
    email:{  
        type:String  
    },    
    age:{  
        type:Number  
    }
});  
  
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">
    <head>
      <title>Node js upload/Import excel file to Mongodb database - Tutsmake.com</title>
      <meta charset="UTF-8">
      <meta name="viewport" content="width=device-width, initial-scale=1">
    </head>
    <body>
      <h1>Node js upload Excel file to Mongodb database - Tutsmake.com</h1>
      <form action="/uploadfile" enctype="multipart/form-data" method="post">
        <input type="file" name="uploadfile" accept='application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, application/vnd.ms-excel' >
        <input type="submit" value="Upload Excel">
      </form>  
    </body>
</html>

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({  
destination:(req,file,cb)=>{  
cb(null,'./public/uploads');  
},  
filename:(req,file,cb)=>{  
cb(null,file.originalname);  
}  
});  
var uploads = multer({storage:storage});  
//connect to db  
mongoose.connect('mongodb://localhost:27017/exceldemo',{useNewUrlParser:true})  
.then(()=>console.log('connected to db'))  
.catch((err)=>console.log(err))  
//init app  
var app = express();  
//set the template engine  
app.set('view engine','ejs');  
//fetch data from the request  
app.use(bodyParser.urlencoded({extended:false}));  
//static folder  
app.use(express.static(path.resolve(__dirname,'public')));  
//route for Home page
app.get('/', (req, res) => {
res.sendFile(__dirname + '/index.html');
});
// Upload excel file and import to mongodb
app.post('/uploadfile', upload.single("uploadfile"), (req, res) =>{
importExcelData2MongoDB(__dirname + '/uploads/' + req.file.filename);
console.log(res);
});
// Import Excel File to MongoDB database
function importExcelData2MongoDB(filePath){
// -> Read Excel File to Json Data
const excelData = excelToJson({
sourceFile: filePath,
sheets:[{
// Excel Sheet Name
name: 'Customers',
// Header Row -> be skipped and will not be present at our result object.
header:{
rows: 1
},
// Mapping columns to keys
columnToKey: {
A: '_id',
B: 'name',
C: 'address',
D: 'age'
}
}]
});
// -> Log Excel Data to Console
console.log(excelData);
/**
{ 
Customers:
[ 
{ _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
userModel.insertMany(jsonObj,(err,data)=>{  
if(err){  
console.log(err);  
}else{  
res.redirect('/');  
}  
}); 
fs.unlinkSync(filePath);
}
//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 
http://127.0.0.1:3000/

Conclusion

Import excel file to mongodb using node js + express; Through this tutorial, you have learned how to import excel file data into MongoDB in Node js + Express. 

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AuthorAdmin

My name is Devendra Dode. I am a full-stack developer, entrepreneur, and owner of Tutsmake.com. I like writing tutorials and tips that can help other developers. I share tutorials of PHP, Python, Javascript, JQuery, Laravel, Livewire, Codeigniter, Node JS, Express JS, Vue JS, Angular JS, React Js, MySQL, MongoDB, REST APIs, Windows, Xampp, Linux, Ubuntu, Amazon AWS, Composer, SEO, WordPress, SSL and Bootstrap from a starting stage. As well as demo example.

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