以下是精简版Flask风格REST API框架的实现，包含核心路由、请求处理和响应封装功能：
from http.server import BaseHTTPRequestHandler, HTTPServer
import json
import re
class Request:
def __init__(self, method, path, headers, body):
self.method = method
self.path = path
self.headers = headers
self.body = body
class Response:
def __init__(self, data="", status=200, content_type="application/json"):
self.data = json.dumps(data) if isinstance(data, dict) else data
self.status = status
self.content_type = content_type
class MiniFlask:
def __init__(self):
self.routes = {}
def route(self, path, methods=["GET"]):
def wrapper(handler):
for method in methods:
self.routes[(method.upper(), re.compile(path))] = handler
return handler
return wrapper
def __call__(self, port=8000):
class Handler(BaseHTTPRequestHandler):
def do_GET(self): self.handle_request('GET')
def do_POST(self): self.handle_request('POST')
def handle_request(self, method):
content_length = int(self.headers.get('Content-Length', 0))
body = self.rfile.read(content_length).decode('utf-8')
req = Request(method, self.path, self.headers, body)
for (route_method, pattern), handler in self.routes.items():
if route_method == method and pattern.fullmatch(self.path):
resp = handler(req)
self.send_response(resp.status)
self.send_header('Content-type', resp.content_type)
self.end_headers()
self.wfile.write(resp.data.encode('utf-8'))
return
self.send_response(404)
self.end_headers()
server = HTTPServer(('', port), Handler)
print(f"Server running on port {port}")
server.serve_forever()
from mini_flask import MiniFlask, Response
app = MiniFlask()
@app.route("/")
def home(request):
return Response({"message": "Welcome to MiniFlask"})
@app.route("/hello/(.+)", methods=["GET"])
def hello(request):
name = request.path.split('/')[-1]
return Response(f"Hello, {name}!")
@app.route("/data", methods=["POST"])
def process_data(request):
try:
data = json.loads(request.body)
return Response({"received": data})
except:
return Response({"error": "Invalid JSON"}, status=400)
if __name__ == "__main__":
app(port=8080)
该实现包含路由装饰器、请求/响应对象和基础HTTP服务，支持动态路径参数和JSON处理。运行app.py即可启动示例API服务。
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