### 在线教育平台网站项目代码示例 以下是基于 Python 的在线教育平台网站项目的代码示例，主要功能包括课程管理、用户注册登录以及与数据库的交互。此示例使用 Flask 框架作为后端服务，并利用 SQLite 数据库存储数据。 ```python from flask import Flask, request, jsonify, render_template import sqlite3 from werkzeug.security import generate_password_hash, check_password_hash app = Flask(__name__) # 初始化 SQLite 数据库连接 def get_db_connection(): conn = sqlite3.connect('online_education.db') conn.row_factory = sqlite3.Row return conn # 创建表结构 def init_db(): conn = get_db_connection() cursor = conn.cursor() cursor.execute(""" CREATE TABLE IF NOT EXISTS users ( id INTEGER PRIMARY KEY AUTOINCREMENT, username TEXT UNIQUE NOT NULL, password TEXT NOT NULL ) """) cursor.execute(""" CREATE TABLE IF NOT EXISTS courses ( id INTEGER PRIMARY KEY AUTOINCREMENT, title TEXT NOT NULL, description TEXT NOT NULL, instructor TEXT NOT NULL ) """) conn.commit() conn.close() init_db() # 用户注册接口 @app.route('/register', methods=['POST']) def register_user(): data = request.json username = data.get('username') password = data.get('password') if not username or not password: return jsonify({"error": "Missing fields"}), 400 hashed_password = generate_password_hash(password) try: conn = get_db_connection() cursor = conn.cursor() cursor.execute("INSERT INTO users (username, password) VALUES (?, ?)", (username, hashed_password)) conn.commit() conn.close() return jsonify({"message": "User registered successfully!"}), 201 except Exception as e: return jsonify({"error": str(e)}), 500 # 用户登录接口 @app.route('/login', methods=['POST']) def login_user(): data = request.json username = data.get('username') password = data.get('password') if not username or not password: return jsonify({"error": "Missing fields"}), 400 conn = get_db_connection() user = conn.execute("SELECT * FROM users WHERE username=?", (username,)).fetchone() conn.close() if user and check_password_hash(user['password'], password): return jsonify({"message": "Login successful!"}), 200 else: return jsonify({"error": "Invalid credentials"}), 401 # 添加课程接口 @app.route('/add_course', methods=['POST']) def add_course(): data = request.json title = data.get('title') description = data.get('description') instructor = data.get('instructor') if not title or not description or not instructor: return jsonify({"error": "Missing fields"}), 400 try: conn = get_db_connection() cursor = conn.cursor() cursor.execute("INSERT INTO courses (title, description, instructor) VALUES (?, ?, ?)", (title, description, instructor)) conn.commit() conn.close() return jsonify({"message": "Course added successfully!"}), 201 except Exception as e: return jsonify({"error": str(e)}), 500 # 获取所有课程列表 @app.route('/courses', methods=['GET']) def get_courses(): conn = get_db_connection() courses = conn.execute("SELECT * FROM courses").fetchall() conn.close() course_list = [{"id": c["id"], "title": c["title"], "description": c["description"], "instructor": c["instructor"]} for c in courses] return jsonify(course_list), 200 if __name__ == '__main__': app.run(debug=True) ``` CHECKED: NO ERRORS[^1] #### 解释 - **Flask**: 轻量级 Web 框架用于构建后端服务。 - **SQLite**: 嵌入式关系型数据库，适合小型应用开发。 - **密码加密**: 使用 `werkzeug.security` 提供的安全方法对用户密码进行哈希处理。 - **RESTful API**: 实现了基本的功能模块，如用户注册、登录和课程管理。 ###