javascript - Node.js 不连接 MySQL, PHPMyAdmin

Question

我正在尝试登录一个使用 mysql 存储用户名和密码的系统，但登录页面位于 manager.js 文件中，如下所示:

var express = require('express');
var router = express.Router();
var async = require('async');

var util = require('../utils/util');
var db = require('../utils/database');
var connection = db.connection();

router.get('/login', function (req, res) {
  if (req.session.manager) {
    return res.redirect('/');
  }

  if (req.query.tip == 'error') {
    var tip = 'username or password incorrect!';
  } else {
    var tip = null;
  }
  res.render('login', { tip: tip });
});

router.post('/login', function (req, res) {
  var username = req.body.username;
  var password = req.body.password;
  var sql = 'SELECT * FROM restaurant_accounts WHERE ra_name=?';
  connection.query(sql, [username], function (err, result) {
    if (err) throw err;
    if (result.length == 0) {
      return res.redirect('/manager/login?tip=error');
    } 
    var account = result[0];
    if (!util.checkHash(password, account.ra_password)) {
      return res.redirect('/manager/login?tip=error');
    }

    connection.query('SELECT * FROM restaurants WHERE rest_owner_id=?', [account.ra_id], function (err, result) {
      if (err) throw err;
      var restaurant = result[0];
      req.session.manager = {
        id: account.ra_id,
        name: account.ra_name,
        rest_id: restaurant.rest_id,
        rest_name: restaurant.rest_name
      };
      res.redirect('/');
    });
  });
});

router.get('/logout', function (req, res) {
  req.session.destroy();
  res.redirect('/manager/login');
});

module.exports = router;

当我在浏览器中键入 localhost:80 并运行 express 服务器时，它会显示以下屏幕:

现在用户名和密码应该存储在由其他人创建的 mysql 数据库中，我使用 phpmyadmin 添加数据库并可以完全访问它。但当然，由于数据库没有链接，我无法通过这个登录页面，它显示“localhost 拒绝连接”错误!

以下是我的控制台输出在我尝试登录页面之前:

C:\Mrestro\RESTaurant_backend-master\rest-server>node bin\www
Express server listening on port 80
GET /manager/login 304 23ms
GET /css/bootstrap.css 304 7ms
GET /css/main.css 304 6ms
GET /js/jquery.min.js 304 11ms
GET /images/bg.jpg 304 2ms

当我输入随机用户名和密码时，输出如下:

C:\Mrestro\RESTaurant_backend-master\rest-server>node bin\www
Express server listening on port 80
GET /manager/login 304 23ms
GET /css/bootstrap.css 304 7ms
GET /css/main.css 304 6ms
GET /js/jquery.min.js 304 11ms
GET /images/bg.jpg 304 2ms
C:\Mrestro\RESTaurant_backend-master\rest-server\web\manager.js:27
    if (err) throw err;
             ^

Error: ER_ACCESS_DENIED_ERROR: Access denied for user 'bjtu'@'localhost' (using password: YES)
    at Handshake.Sequence._packetToError (C:\Mrestro\RESTaurant_backend-master\rest-server\node_modules\mysql\lib\protocol\sequences\Sequence.js:51:14)
    at Handshake.ErrorPacket (C:\Mrestro\RESTaurant_backend-master\rest-server\node_modules\mysql\lib\protocol\sequences\Handshake.js:103:18)
    at Protocol._parsePacket (C:\Mrestro\RESTaurant_backend-master\rest-server\node_modules\mysql\lib\protocol\Protocol.js:280:23)
    at Parser.write (C:\Mrestro\RESTaurant_backend-master\rest-server\node_modules\mysql\lib\protocol\Parser.js:74:12)
    at Protocol.write (C:\Mrestro\RESTaurant_backend-master\rest-server\node_modules\mysql\lib\protocol\Protocol.js:39:16)
    at Socket.<anonymous> (C:\Mrestro\RESTaurant_backend-master\rest-server\node_modules\mysql\lib\Connection.js:109:28)
    at emitOne (events.js:77:13)
    at Socket.emit (events.js:169:7)
    at readableAddChunk (_stream_readable.js:153:18)
    at Socket.Readable.push (_stream_readable.js:111:10)
    --------------------
    at Protocol._enqueue (C:\Mrestro\RESTaurant_backend-master\rest-server\node_modules\mysql\lib\protocol\Protocol.js:141:48)
    at Protocol.handshake (C:\Mrestro\RESTaurant_backend-master\rest-server\node_modules\mysql\lib\protocol\Protocol.js:52:41)
    at Connection.connect (C:\Mrestro\RESTaurant_backend-master\rest-server\node_modules\mysql\lib\Connection.js:136:18)
    at Connection._implyConnect (C:\Mrestro\RESTaurant_backend-master\rest-server\node_modules\mysql\lib\Connection.js:467:10)
    at Connection.query (C:\Mrestro\RESTaurant_backend-master\rest-server\node_modules\mysql\lib\Connection.js:212:8)
    at Object.handle (C:\Mrestro\RESTaurant_backend-master\rest-server\web\manager.js:26:14)
    at next_layer (C:\Mrestro\RESTaurant_backend-master\rest-server\node_modules\express\lib\router\route.js:103:13)
    at Route.dispatch (C:\Mrestro\RESTaurant_backend-master\rest-server\node_modules\express\lib\router\route.js:107:5)
    at C:\Mrestro\RESTaurant_backend-master\rest-server\node_modules\express\lib\router\index.js:195:24
    at Function.proto.process_params (C:\Mrestro\RESTaurant_backend-master\rest-server\node_modules\express\lib\router\index.js:251:12)

C:\Mrestro\RESTaurant_backend-master\rest-server>

那么，我的问题是我应该使用什么用户名和密码？我在哪里可以找到数据库中正确的？

编辑: database.js

var mysql = require('mysql');
var c = mysql.createConnection({
  host     : 'localhost',
 // port     : '3306',
  user     : 'root',
  password : 'root',
  database : 'restaurant'

});

// enable error logging for each connection query
c.on('error', function(err) {
  console.log(err.code); // example : 'ER_BAD_DB_ERROR'
});

exports.connection = function() {
    return c;
};

Answer 1

在 ../utils/database 中，将用户名设置为“root”并将密码留空或“”，因为它是 windows lamp 和 xamp 设置中的默认设置。
编辑

var mysql = require('mysql');
var c = mysql.createConnection({
  host     : 'localhost',
 // port     : '3306',
  user     : 'root',
  password : '',
  database : 'restaurant'

});

// enable error logging for each connection query
c.on('error', function(err) {
  console.log(err.code); // example : 'ER_BAD_DB_ERROR'
});

exports.connection = function() {
    return c;
};