通过 Sequelize (Express/NodeJS) 访问 mysql 时出错答案

【问题标题】：Error while Accessing mysql through Sequelize (Express/NodeJS)通过 Sequelize (Express/NodeJS) 访问 mysql 时出错
【发布时间】：2015-12-22 02:51:34
【问题描述】：

我正在尝试开始使用 Sequelize。虽然我已经发现并清除了其中一些错误，但我遇到了一些错误，但我无法弄清楚这一点。

项目结构：

Project
 -Client
 -Server
  --models
    ---index.js
    ---Sid.js
  --router
    ---routes
       ----signup.js
    ---index.js
  app.js

我的配置变量：

"Lexstart": {
  "dbConfig": {
     "driver": "mysql",
     "user": "root",
     "database": "sid1",
     "password": "sid1",
     "host": "127.0.0.1",
     "port": "3306"
  }
}

我的模型/index.js：

var fs        = require("fs");
var path      = require("path");
var Sequelize = require('sequelize');
var config    = require('config');  // we use node-config to handle environments

var dbConfig = config.get('Lexstart.dbConfig');

// initialize database connection
var sequelize = new Sequelize(
    dbConfig.database,
    dbConfig.username,
    dbConfig.password,{
      host: dbConfig.host,
      dialect: dbConfig.driver
}
);
var db        = {};

fs
.readdirSync(__dirname)
.filter(function(file) {
    return (file.indexOf(".") !== 0) && (file !== "index.js");
})
.forEach(function(file) {
    var model = sequelize.import(path.join(__dirname, file));
    db[model.name] = model;
});

Object.keys(db).forEach(function(modelName) {
if ("associate" in db[modelName]) {
    db[modelName].associate(db);
}
});

db.sequelize = sequelize;
db.Sequelize = Sequelize;

module.exports = db;

模型/Sid.js

module.exports = function(sequelize, DataTypes) {
    var Sid = sequelize.define("Sid", {
        username: DataTypes.STRING,
        password: DataTypes.STRING
     });

return Sid;
};

我的路由器/index.js

/**
* The Index of Routes
*/

module.exports = function (app) {

// The signup route
app.use('/signup', require('./routes/signup'));
}

我的路由器/路由/signup.js

var models = require('../../models');
var Sid = models.Sid;
// Include Express
var express = require('express');
// Initialize the Router
var router = express.Router();
var config    = require('config');  // we use node-config to handle environments


// Setup the Route
router.get('/', function (req, res) {

Sid.findAll().then(function(users) {
    console.log(users);;
});

// return a json response to angular
res.json({
    'msg': users
});
});

router.get('/sid', function (req, res) {

// return a json response to angular
res.json({
    'msg': "sid"
});
});



// Expose the module
module.exports = router;

路由 localhost:3000/signup/sid 工作正常。但是 /signup 正在放弃错误。正如您在下面的错误文本中看到的那样，它表明正在尝试连接而没有配置提供的变量值（用户名、密码、主机）（配置变量正在工作并且可以正常获取）。我在调试时也无法弄清楚。

Unhandled rejection SequelizeAccessDeniedError: ER_ACCESS_DENIED_ERROR: Access denied for user ''@'localhost' (using password: YES)
at Handshake._callback (/Users/siddharthsrivastava/Documents/sites/express/LexStart/server/node_modules/sequelize/lib/dialects/mysql/connection-manager.js:51:20)
at Handshake.Sequence.end (/Users/siddharthsrivastava/Documents/sites/express/LexStart/server/node_modules/mysql/lib/protocol/sequences/Sequence.js:96:24)
at Handshake.ErrorPacket (/Users/siddharthsrivastava/Documents/sites/express/LexStart/server/node_modules/mysql/lib/protocol/sequences/Handshake.js:103:8)
at Protocol._parsePacket (/Users/siddharthsrivastava/Documents/sites/express/LexStart/server/node_modules/mysql/lib/protocol/Protocol.js:274:23)
at Parser.write (/Users/siddharthsrivastava/Documents/sites/express/LexStart/server/node_modules/mysql/lib/protocol/Parser.js:77:12)
at Protocol.write (/Users/siddharthsrivastava/Documents/sites/express/LexStart/server/node_modules/mysql/lib/protocol/Protocol.js:39:16)
at Socket.<anonymous> (/Users/siddharthsrivastava/Documents/sites/express/LexStart/server/node_modules/mysql/lib/Connection.js:96:28)
at Socket.emit (events.js:107:17)
at readableAddChunk (_stream_readable.js:163:16)
at Socket.Readable.push (_stream_readable.js:126:10)
at TCP.onread (net.js:538:20)

请指导。

悉达多

【问题讨论】：

标签： node.js express sequelize.js

【解决方案1】：

dbConfig 中没有用户名。在您的配置中用用户名替换用户。 "dbConfig": { "driver": "mysql", "user": "root", ... var sequelize = new Sequelize( dbConfig.database, dbConfig.username,

【讨论】：

【解决方案2】：

转到 config.json 并将用户更改为用户名并重新启动您的应用程序。有时没有错误，应用程序无法正常工作。

"Lexstart": {
  "dbConfig": {
     "driver": "mysql",
     "username": "root",
     "database": "sid1",
     "password": "sid1",
     "host": "127.0.0.1",
     "port": "3306"
  }
}

【讨论】：