I am using node.js, mysql, ejs (templating engine) and bootstrap to create a website. I have tried to connect to mysql database by creating a connection (as seen in the code).
When i use nodemon, the first message that I get is that the server is connected on port 8089. However, the site does not connect to the sql database straight away. I have to restart nodemon (by pressing save) and then the site is connected to the database.
I am looking for a method which connects the site to the database on the first attempt when running nodemon.
const db = mysql.createConnection({
host: "localhost",
user: "root",
password: "root",
database: "MyFood"
});
db.connect((err) => {
if (err) {
// throw err;
console.error("error connecting: " + err.stack);
} else {
console.log("Connected to database");
}
});
global.db = db;
Related
i've imported a mysql database from old to new machine using mysqldump. on the new machine, i can read the local database and print the database contents to the console, meaning the import worked.
To connect to this database, i'm using Node (eg node myServerFile.js) but it's not connecting to this database on the new machine. my react/node files are exactly the same on both machines, the difference is a new machine with a freshly installed react/node/mysql environment.
i can't get past the 'Error connecting to database' message
myServerFile.js
var mysql = require('mysql');
var connection = mysql.createConnection({
host: 'localhost',
user: 'xxxx',
password: 'xxxx',
database: 'xxxx'
});
var router = express();
connection.connect(function(err){
if(!err) {
console.log('Database is connected');
}
else {
console.log('Error connecting to database');
}
});
Hello Stacksoverflowers,
I have a problem to connect my server.js file to Mysql via Express.
I've already insatlled mysql and express via npm.
when i run my server.js
The only thing it says in my console (MacOS default terminal) is:
"node server running now - using http://localhost:3000"
(I got no errors)
and my webpage also showing correct - "Node Server running - startpage" in the browser.
The problem is that they say nothing like "Connected to the MySQL server" or "Timeout: error messages" ?? (look at #3)
// Dan k
//#1
// My codes from server.js
const express = require('express');
const mysql = require('mysql');
const hostname = "localhost:";
const port = 3000;
//#2
// create connection to DB
const connection = mysql.createConnection({
host: "localhost",
user: 'root',
password: 'root',
port: 3000
});
//#3
// Connect to DB
connection.connect(function(err) {
if (!err) {
console.log('Connected to the MySQL server.');
}
else if (err)
{
return console.error('Timeout: ' + err.message);
}
});
// Routing with Express
const app = express();
//#4
// Startpage (root)
app.get('/', function(request, response){
response.send('Node Server running - startpage...');
response.end();
})
connection.end();
//#5
app.listen(port, (err) => {
if(err) throw err;
console.log("node server running now - using http://"+(hostname)+ .
(port)");
});
I got what is causing the issue. You are using the same port number 3000 to connect to your mysqlDB and at the same time using the same port to run your nodejs application.
This does throw an error but it takes a really long time to throw the error.
So the simple answer here is that the port that you are mentioning in your createConnection() method is incorrect and needs to be changed. This port should be port number on which your mysql DB is running. From the error it is clear that your mysql DB is not running on port 3306. You can check this post to figure out which port is your mysql DB running on. https://serverfault.com/questions/116100/how-to-check-what-port-mysql-is-running-on. Below is a reference for you. Please see the comments.
// create connection to DB
const connection = mysql.createConnection({
host: "localhost",
user: 'root',
password: 'root',
port: 3000 // You need to change this and put in the correct port number.
});
I recently started learning Nodejs to connect to MySQL and i'm having connection issues. I tried using putty to connect and i'm able to do so without any issues
this is my example.route.js file
const express = require('express'),
router = express.Router(),
mysql = require('mysql');
var connection = mysql.createConnection({
host: <ipaddress>,
port: <default Port>,
user: 'root',
password: <given password>,
database: <db name>,
connectionTimeout: 30000
});
connection.connect((error) => {
if (error) {
console.log('error connecting: ' + error);
} else {
console.log('Connected to server');
}
});
connection.query('SELECT * FROM test', function(err, results, fields) {
console.log('results in table: ' + results);
console.log('fields in table: ' + fields); // -1
connection.release();
if (err) throw error;
});
connection.end();
module.exports = router;
i get the following error => Error: connect ECONNREFUSED (Will update with complete error in a few hours)
As i mentioned before i used PUTTY in order to make sure there was an issue when connecting but i was able to connect to the given database name, host with the same user and password.
Not sure if this helps is an ubuntu server with MySQL
Anyone has an idea of why i'm getting the connection error? I would appreciate it the help
I'm trying to connect to my local MySql server from node.js/express application using mssql with following config:
// Database connection
var sql = require('mssql');
var config = {
user: 'db_user',
password: 'db_pass',
server: 'localhost',
database: 'project_db'
};
sql.connect(config, function (err) {
if (err) {
console.log(err);
}
});
I get this error:
{ [ConnectionError: Failed to connect to localhost:1433 - connect ECONNREFUSED 127.0.0.1:1433]
name: 'ConnectionError',
message: 'Failed to connect to localhost:1433 - connect ECONNREFUSED 127.0.0.1:1433',
code: 'ESOCKET' }
I know I have to enable TCP/IP connections for my local MySql server, but I can not find how to do it on OSX El Capitan. There is nothing like control panel with settings. That's all available at System Preferences > MySql:
Any ideas how to fix this, guys? Thanks for trying to help.
mssql and mysql are two very different things... You should use the node-mysql or some other mysql client library if you are going to be running mysql on your dev machine
https://github.com/felixge/node-mysql
var mysql = require('mysql');
var connection = mysql.createConnection({
host : 'localhost',
user : 'me',
password : 'secret',
database : 'my_db'
});
connection.connect();
connection.query('SELECT 1 + 1 AS solution', function(err, rows, fields) {
if (err) throw err;
console.log('The solution is: ', rows[0].solution);
});
connection.end();
I'm trying to connect to my local mysql database by using node.js on my website. I have installed node.js on my laptop. This is my code that is executed:
function registerUser()
{
var mysql = require("mysql");
var connection = mysql.createConnection( {
host: 'localhost',
user: 'root',
password: '',
database: 'Fountaint_News_Database',
port: 3306
});
connection.connect();
var query = connection.query('INSERT INTO registered_users VALUES ("test", 22)',
function(err, result, fields) {
if (err) throw err;
console.log('result: ', result);
});
connection.end();
console.log('Connection closed');
}
I haven't done anything else, I'm not sure if there is anything else to setup, but when I runt I just get this error "ReferenceError: Can't find variable: require".
I hope that someone can help me.
Are you running this code on the server side, not on the client don't you? I mean saving this file on a .js file, running via console via
node yourfile.js
after obviously a
npm install mysql
in the same directory?
Obviously you need to bind the registerUser() function to some event :)