Python如何实现 HTTP echo 服务器

from http.server import HTTPServer, BaseHTTPRequestHandler
import json
class EchoHandler(BaseHTTPRequestHandler):
    def do_GET(self):
        # 构造响应数据
        response_data = {
            'path': self.path,
            'method': 'GET',
            'headers': dict(self.headers),
            'query_string': self.path.split('?')[1] if '?' in self.path else ''
        }
        # 设置响应头
        self.send_response(200)
        self.send_header('Content-Type', 'application/json')
        self.end_headers()
        # 发送响应
        self.wfile.write(json.dumps(response_data, indent=2).encode())
    def do_POST(self):
        # 获取请求体长度
        content_length = int(self.headers.get('Content-Length', 0))
        # 读取请求体
        body = self.rfile.read(content_length).decode()
        # 构造响应数据
        response_data = {
            'path': self.path,
            'method': 'POST',
            'headers': dict(self.headers),
            'body': body
        }
        # 设置响应头
        self.send_response(200)
        self.send_header('Content-Type', 'application/json')
        self.end_headers()
        # 发送响应
        self.wfile.write(json.dumps(response_data, indent=2).encode())
def run_server(port=8000):
    server_address = ('', port)
    httpd = HTTPServer(server_address, EchoHandler)
    print(f'Starting server on port {port}...')
    httpd.serve_forever()
if __name__ == '__main__':
    run_server()

# GET 请求
curl http://localhost:8000/test?foo=bar
# POST 请求
curl -X POST -d "hello=world" http://localhost:8000/test