node command convert json to excel code example
Example: convert excel file to json using node js
let express = require('express'),
app = express(),
bodyParser = require('body-parser'),
multer = require('multer'),
crypto = require('crypto'),
xlsxtojson = require('xlsx-to-json'),
xlstojson = require("xls-to-json");
let fileExtension = require('file-extension');
app.use(bodyParser.json());
let storage = multer.diskStorage({
destination: function (req, file, cb) {
cb(null, './input/')
},
filename: function (req, file, cb) {
crypto.pseudoRandomBytes(16, function (err, raw) {
cb(null, raw.toString('hex') + Date.now() + '.' + fileExtension(file.mimetype));
});
}
});
let upload = multer({storage: storage}).single('file');
app.post('/sendFile', function(req, res) {
let excel2json;
upload(req,res,function(err){
if(err){
res.json({error_code:401,err_desc:err});
return;
}
if(!req.file){
res.json({error_code:404,err_desc:"File not found!"});
return;
}
if(req.file.originalname.split('.')[req.file.originalname.split('.').length-1] === 'xlsx'){
excel2json = xlsxtojson;
} else {
excel2json = xlstojson;
}
excel2json({
input: req.file.path,
output: "output/"+Date.now()+".json",
lowerCaseHeaders:true
}, function(err, result) {
if(err) {
res.json(err);
} else {
res.json(result);
}
});
})
});
app.get('/',function(req,res){
res.sendFile(__dirname + "/index.html");
});
app.listen('3000', function(){
console.log('Server running on port 3000');
});