storedProcedure.js

/*Strored Procedure*/
/* 
CREATE PROCEDURE 'GetAllData' ()
BEGIN
    SELECT * FROM Employee;
END$$
*/

/*
* Nodejs Code
*/
var express = require('express'),
	mysql = require('mysql'),
	bodyParser = require('body-parser'),
	app = express();

app.use(bodyParser.json());

var port = 3000;
var database = mysql.createPool({
  connectionLimit : 100,
  host: 'localhost',
  user: '***',
  password: '***',
  database: 'dbName',
  port: 3306
});

app.get('/data',function(req,res){

	var appData = {};
	let sql = 'CALL GetAllData()';

	database.getConnection(function(err,connection){
		if(err){
			appData['error'] = 1;
			appData['data'] = 'Internal server error';
			res.status(500).json(appData);
		}else{
			connection.query(sql,function(err,rows,fields){
				if(err){
					appData['error'] = 1;
					appData['data'] = 'Error running stored procedure';
					res.status(500).json(appData);
				}
				appData['error'] = 1;
				appData['data'] = rows;
				res.status(200).json(appData);
			});
			connection.release();
		}
	});
});

app.listen(port,function(){
	console.log('Server running on port',port);
});