由于直接提供完整的购物商城代码在多种编程语言中是不现实的，特别是考虑到篇幅和复杂性，我将为你概述如何用几种流行的编程语言（Python, JavaScript (Node.js), 和 Java）来构

1. Python (使用 Flask 框架)1000sheng.com
   依赖安装
   bash
   pip install Flask
   pip install Flask-SQLAlchemy
   pip install Flask-Migrate
   pip install Flask-Login
   示例代码结构
   app.py: 主应用文件
   models.py: 定义数据库模型
   views.py: 路由和视图函数
   templates/: 存放HTML模板
   app.py
   python
   from flask import Flask
   from flask_sqlalchemy import SQLAlchemy
   from flask_migrate import Migrate
   from flask_login import LoginManager

app = Flask(name)
app.config[‘SQLALCHEMY_DATABASE_URI’] = ‘sqlite:///shopping_mall.db’
app.config[‘SECRET_KEY’] = ‘your_secret_key’

db = SQLAlchemy(app)
migrate = Migrate(app, db)
login_manager = LoginManager(app)

导入模型和视图

from models import User, Product # 假设你定义了这些模型
from views import configure_routes

configure_routes(app)

if name == ‘main’:
app.run(debug=True)
models.py
python
from app import db

class User(db.Model):
id = db.Column(db.Integer, primary_key=True)
username = db.Column(db.String(80), unique=True, nullable=False)

class Product(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(120), nullable=False)
price = db.Column(db.Float, nullable=False)
2. JavaScript (Node.js, 使用 Express 和 Sequelize)
依赖安装
bash
npm install express
npm install sequelize
npm install sqlite3
npm install bcryptjs
npm install jsonwebtoken
示例代码结构
server.js: 主服务器文件
models/: Sequelize 模型定义
routes/: 路由文件
server.js
javascript
const express = require(‘express’);
const { Sequelize, DataTypes } = require(‘sequelize’);
const sequelize = new Sequelize({
dialect: ‘sqlite’,
storage: ‘./shopping_mall.sqlite’
});

const app = express();

// 导入模型和路由
const Product = require(‘./models/Product’);
const routes = require(‘./routes/index’);

app.use(express.json());

// 路由配置
app.use(‘/’, routes);

// 数据库同步
(async () => {
await sequelize.sync();
app.listen(3000, () => {
console.log(‘Server is running on port 3000’);
});
})();
models/Product.js
javascript
const { Sequelize, DataTypes } = require(‘sequelize’);
const sequelize = require(‘…/sequelize’);

const Product = sequelize.define(‘Product’, {
name: DataTypes.STRING,
price: DataTypes.FLOAT
});

module.exports = Product;
3. Java (使用 Spring Boot)
Java Spring Boot 项目通常通过构建工具（如 Maven 或 Gradle）和 IDE（如 IntelliJ IDEA 或 Eclipse）来创建和管理。

Maven 依赖
xml


org.springframework.boot
spring-boot-starter-web


org.springframework.boot
spring-boot-starter-data-jpa


org.springframework.boot
spring-boot-starter-security


org.hsqldb
hsqldb
runtime


示例代码
Spring Boot 项目的结构更复杂，通常包括多个文件和