Node.js is the server side scripting language. In this blog, I am explaining how I will upload the CSV file using Node.Js.

Here is the step by step implementation of CSV upload.

Step 1:

In the first step, we will create a view page where we upload a CSV file. In routes we will define the URL in which our view page will open:

app.get('/upload', function(request, response) {
    response.render('uploadFile.html');
});

Step 2:

Now we will create a view page.Here I have created a file named as uploadFile.html.

<form action="/uploadCsv" method="post" enctype="multipart/form-data" class="box login">
 <input type="file" name="file">
 <input type="submit" class="" value="Upload" tabindex="1">
 </form>

Step 3:

Now we will again go to the routes and give the URL for getting the request which we will give after clicking on the upload button.

app.post('/uploadCsv', uploadFileController.uploadCsv);

Step 4:

Now we will create a uploadFileController and make a function uploadCsv and write the below code to upload file.

var fs = require("fs");

module.exports.uploadCsv = function(req, res) {
            var today = new Date();
            var date = today.getDate();
            var tempPath = req.files.file.path,
            targetPath = path.resolve('./uploads/'+req.files.file.originalFilename);
            if (path.extname(req.files.file.name).toLowerCase() === '.csv') {
                 fs.rename(tempPath, './uploads/csv_1', function(err) {
                        if (err) throw err;
                        console.log("Upload completed!");
            });
};

Here our file upload steps are completed.By this way, we can implement CSV file uploading using nodeJS.

Note:For reading the files we have to upload fs module by using npm only then we will use fs module.