由于编写一个完整的购物商城代码是一个庞大的项目，涵盖前端、后端、数据库、支付接口等多个方面，我无法在这里直接给出完整的代码。但我可以为你提供一个简化的后端API的示例框架，分别用Python（Flas
由于编写一个完整的购物商城代码是一个庞大的项目，涵盖前端、后端、数据库、支付接口等多个方面，我无法在这里直接给出完整的代码。但我可以为你提供一个简化的后端API的示例框架，分别用Python（Flask）、JavaScript（Node.js + Express）、和Java（Spring Boot）来实现。
1. Python (使用Flask)
Flask后端示例
python
# app.py
from flask import Flask, jsonify, request
from flask_sqlalchemy import SQLAlchemy
app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:tmp/shopping_mall.db'
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
db = SQLAlchemy(app)
class Product(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(80), nullable=False)
price = db.Column(db.Float, nullable=False)
@app.route('/products', methods=['GET'])
def get_products():
products = Product.query.all()
return jsonify([{'id': p.id, 'name': p.name, 'price': p.price} for p in products])
#chhas{
margin-top: 50px;
padding:zboubao.cn;
font-size: 18px;
cursor: 10px 20px;
}
@app.route('/products//purchase', methods=['POST'])
def purchase_product(product_id):
# 假设购买逻辑已处理（如支付、库存更新等）
product = Product.query.get_or_404(product_id)
# 这里只是返回购买成功的消息
return jsonify({'message': f'Product {product.name} purchased successfully!'}), 200
if __name__ == '__main__':
db.create_all()
app.run(debug=True)
2. JavaScript (使用Node.js和Express)
Express后端示例
javascript
// server.js
const express = require('express');
const mongoose = require('mongoose');
const app = express();
app.use(express.json());
mongoose.connect('mongodb://localhost/shopping_mall', {
useNewUrlParser: true,
useUnifiedTopology: true
}).then(() => console.log('Connected to MongoDB')).catch(err => console.log(err));
const ProductSchema = new mongoose.Schema({
name: String,
price: Number
});
const Product = mongoose.model('Product', ProductSchema);
app.get('/products', async (req, res) => {
const products = await Product.find();
res.json(products.map(product => ({ id: product._id, name: product.name, price: product.price })));
});
app.post('/products/:productId/purchase', async (req, res) => {
const { productId } = req.params;
const product = await Product.findById(productId);
if (!product) return res.status(404).send('Product not found');
// 假设购买逻辑已处理（如支付、库存更新等）
res.json({ message: `Product ${product.name} purchased successfully!` });
});
app.listen(3000, () => console.log('Server is running on port 3000'));
3. Java (使用Spring Boot)
Spring Boot后端示例（仅Controller部分）
java
// ProductController.java
package com.example.shoppingmall.controller;
import com.example.shoppingmall.model.Product;
import com.example.shoppingmall.service.ProductService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import java.util.List;
@RestController
@RequestMapping("/products")
public class ProductController {
@Autowired
private ProductService productService;
@GetMapping
public List getProducts() {
return productService.findAll();
}
@PostMapping("/{productId}/purchase")
public ResponseEntity purchaseProduct(@PathVariable Long productId) {
// 假设purchase方法处理购买逻辑（如支付、库存更新等）
boolean success = productService.purchase(productId);
if (success) {
return ResponseEntity.ok("
