Node JS和mysql连接不上（客户端不支持服务器请求的认证协议考虑升级mysql客户端）

Question

I'm trying to connect my NodeJs application with a mysql database but its not connecting for some reason.

I did install the mysql npm like this (typed this in commandline):

npm install mysql

After I installed the mysql npm I made an index.js file and in that file I tried to make the connection with my database.

This is the code inside my index.js file to make a connection with mysql:

const mysql      = require('mysql');

var connection = mysql.createConnection({
    host     : 'localhost',
    user     : 'root',
    port     : '3306',
    password : 'test12310',
    database : 'fys'
});


connection.connect((err) => {
    if(!err)
        console.log('Database is geconnect!');
    else
        console.log('Database connectie niet gelukt!  : '+ JSON.stringify(err, undefined,2));
});

Then I tried to run the code and see if the connection with mysql worked. I typed this in the command line:

node index.js

This is the error message I got in the command prompt :

error image

Does anyone know how I can fix this error and get a connection with my mysqldatabase in nodejs ?

Any kind of help is appreciated

Answer 1

Use the new mysql2 library instead of mysql in order to use the new authentication method of MySQL 8.0

~ Tested in node version 13.6.0 and MySQL 8.0.21

Answer 2

I was having the same problem with mysql library and I fixed that error by changing to mysql2 Library I recommend you to install mysql2

Run

npm install mysql2

Then

import mysql from "mysql2";

OR

const mysql = require("mysql2")

I hope this will work for you!! Good Luck

Answer 3

Instead of

mysqlConnection.connect((err) => {

use

connection.connect((err) => {

if(!err)
    console.log('Database is connected!');
else
    console.log('Database not connected! : '+ JSON.stringify(err, undefined,2));
});

[Here the is tutorials reference for the code] 1

For your mysql error:

Execute the following query in MYSQL Workbench:

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'password'

Try connecting using node after you do so.

Answer 4

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'YourRootPassword';
-- or
CREATE USER 'foo'@'%' IDENTIFIED WITH mysql_native_password BY 'bar';
-- then
FLUSH PRIVILEGES;