add Sequelize ORM

server_demo/config/config.json

@@ -0,0 +1,23 @@
+{
+  "development": {
+    "username": "root",
+    "password": "Skyinno251,",
+    "database": "appserver",
+    "host": "127.0.0.1",
+    "dialect": "mysql"
+  },
+  "test": {
+    "username": "root",
+    "password": null,
+    "database": "database_test",
+    "host": "127.0.0.1",
+    "dialect": "mysql"
+  },
+  "production": {
+    "username": "root",
+    "password": null,
+    "database": "database_production",
+    "host": "127.0.0.1",
+    "dialect": "mysql"
+  }
+}

server_demo/migrations/20250514151451-create-article.js

@@ -0,0 +1,32 @@
+'use strict';
+/** @type {import('sequelize-cli').Migration} */
+module.exports = {
+  async up(queryInterface, Sequelize) {
+    await queryInterface.createTable('Articles', {
+      id: {
+        allowNull: false,
+        autoIncrement: true,
+        primaryKey: true,
+        type: Sequelize.INTEGER
+      },
+      title: {
+        allowNull: false,
+        type: Sequelize.STRING
+      },
+      content: {
+        type: Sequelize.TEXT
+      },
+      createdAt: {
+        allowNull: false,
+        type: Sequelize.DATE
+      },
+      updatedAt: {
+        allowNull: false,
+        type: Sequelize.DATE
+      }
+    });
+  },
+  async down(queryInterface, Sequelize) {
+    await queryInterface.dropTable('Articles');
+  }
+};

server_demo/models/article.js

@@ -0,0 +1,24 @@
+'use strict';
+const {
+  Model
+} = require('sequelize');
+module.exports = (sequelize, DataTypes) => {
+  class Article extends Model {
+    /**
+     * Helper method for defining associations.
+     * This method is not a part of Sequelize lifecycle.
+     * The `models/index` file will call this method automatically.
+     */
+    static associate(models) {
+      // define association here
+    }
+  }
+  Article.init({
+    title: DataTypes.STRING,
+    content: DataTypes.TEXT
+  }, {
+    sequelize,
+    modelName: 'Article',
+  });
+  return Article;
+};

server_demo/models/index.js

@@ -0,0 +1,43 @@
+'use strict';
+
+const fs = require('fs');
+const path = require('path');
+const Sequelize = require('sequelize');
+const process = require('process');
+const basename = path.basename(__filename);
+const env = process.env.NODE_ENV || 'development';
+const config = require(__dirname + '/../config/config.json')[env];
+const db = {};
+
+let sequelize;
+if (config.use_env_variable) {
+  sequelize = new Sequelize(process.env[config.use_env_variable], config);
+} else {
+  sequelize = new Sequelize(config.database, config.username, config.password, config);
+}
+
+fs
+  .readdirSync(__dirname)
+  .filter(file => {
+    return (
+      file.indexOf('.') !== 0 &&
+      file !== basename &&
+      file.slice(-3) === '.js' &&
+      file.indexOf('.test.js') === -1
+    );
+  })
+  .forEach(file => {
+    const model = require(path.join(__dirname, file))(sequelize, Sequelize.DataTypes);
+    db[model.name] = model;
+  });
+
+Object.keys(db).forEach(modelName => {
+  if (db[modelName].associate) {
+    db[modelName].associate(db);
+  }
+});
+
+db.sequelize = sequelize;
+db.Sequelize = Sequelize;
+
+module.exports = db;

server_demo/package.json

@@ -15,6 +15,8 @@
     "express": "^5.1.0",
     "mysql2": "^3.14.1",
     "nodemon": "^3.1.10",
-    "oracledb": "^5.5.0"
+    "oracledb": "^5.5.0",
+    "sequelize": "^6.37.7",
+    "sequelize-cli": "^6.6.3"
   }
 }

server_demo/seeders/20250514152532-article.js

@@ -0,0 +1,42 @@
+'use strict';
+
+/** @type {import('sequelize-cli').Migration} */
+module.exports = {
+  async up (queryInterface, Sequelize) {
+    /**
+     * Add seed commands here.
+     *
+     * Example:
+     * await queryInterface.bulkInsert('People', [{
+     *   name: 'John Doe',
+     *   isBetaMember: false
+     * }], {});
+    */
+    const articles = [];
+    const counts = 100;
+
+    for (let i = 1; i <= counts; i++) {
+      const article = {
+        title: `文章的标题 ${i}`,
+        content: `文章的内容 ${i}`,
+        createdAt: new Date(),
+        updatedAt: new Date(),
+      };
+
+      articles.push(article);
+    }
+
+    await queryInterface.bulkInsert('Articles', articles, {});
+  },
+
+  async down (queryInterface, Sequelize) {
+    /**
+     * Add commands to revert seed here.
+     *
+     * Example:
+     * await queryInterface.bulkDelete('People', null, {});
+     */
+    await queryInterface.bulkDelete('Articles', null, {});
+  }
+};
+//sequelize db:seed --seed 20250514152532-article

server_demo/server.js

@@ -90,4 +90,23 @@ app.use('/api', apiRouter)
 //https://clwy.cn/courses/fullstack-node
 //https://clwy.cn/chapters/fullstack-node-sequelize
 
-//https://apifox.com/
+//https://apifox.com/
+
+
+
+//Sequelize ORM 的使用
+/**
+ * 那么，现在我们就来一起玩玩Sequelize ORM。第一步当然是要来安装了。
+ * 先安装sequelize的命令行工具，需要全局安装，这样更方便使用
+
+ npm i -g sequelize-cli
+
+ 接着确保命令行是在当前项目的命令行里，
+ 还要安装当前项目所依赖的sequelize包和对数据库支持依赖的mysql2
+
+ npm i sequelize mysql2
+
+ 最后，来初始化项目。
+
+ sequelize init
+ */