### 创建和封装HTTP服务器 在Python中，可以利用内置的`http.server`模块快速创建一个基本的HTTP服务器。对于更复杂的需求，则可能需要用到像Flask或Django这样的Web框架来构建应用级别的服务。然而，在这里将展示一种轻量级的方法——基于标准库中的`http.server`来进行扩展，并将其功能进行一定的抽象化处理以便于重复使用。 #### 基础HTTP服务器实例 首先定义了一个基础版本的服务端程序： ```python from http.server import HTTPServer, BaseHTTPRequestHandler class SimpleHTTPRequestHandler(BaseHTTPRequestHandler): def do_GET(self): self.send_response(200) self.end_headers() message = "Hello! This is a simple web server." self.wfile.write(message.encode('utf-8')) if __name__ == "__main__": PORT = 8000 with HTTPServer(("localhost", PORT), SimpleHTTPRequestHandler) as httpd: print(f"Serving on port {PORT}") try: httpd.serve_forever() except KeyboardInterrupt: pass finally: httpd.server_close() ``` 这段代码展示了最简单的GET请求响应方式[^1]。 #### 封装后的HTTP服务器类 为了提高可维护性和灵活性，下面是对上述例子进行了进一步改进，使其成为一个更加通用化的组件： ```python import threading from http.server import HTTPServer, BaseHTTPRequestHandler class EnhancedRequestHandler(BaseHTTPRequestHandler): routes = {} @classmethod def route(cls, path=None, methods=('GET',)): """装饰器用于注册路由""" def decorator(func): cls.routes[(path or func.__name__, tuple(methods))] = func return func return decorator def _handle_request(self, method_name='do_GET'): handler_method = getattr(self, method_name.lower()) key = (self.path.strip('/'), (method_name,)) matched_func = next((f for p, f in EnhancedRequestHandler.routes.items() if p == key), None) if not matched_func: self.send_error(404, "Not Found") return response_code, content_type, body = matched_func(self) self.send_response(response_code) self.send_header("Content-Type", content_type) self.end_headers() self.wfile.write(body) def run_server(port=8000, request_handler_class=EnhancedRequestHandler): class ThreadedHTTPServer(HTTPServer): allow_reuse_address = True def __init__(self, *args, **kwargs): super().__init__(*args, **kwargs) self.thread = threading.Thread(target=self.serve_forever) self.thread.daemon = True def start(self): self.thread.start() def stop(self): self.shutdown() self.socket.close() self.thread.join() server = ThreadedHTTPServer(('localhost', port), request_handler_class) print(f'Starting server at http://localhost:{port}') try: server.start() while input().lower() != 'q': continue except Exception as e: print(e) finally: server.stop() print("\nShutting down gracefully.") ``` 在这个增强版的例子中引入了多线程支持以及路径映射机制，允许开发者通过装饰器的方式轻松添加新的API接口。