Absolutely that's what I'm looking for! Thanks a lot! However, I'm wondering if Twisted and Klein support filtering results. For example, the User table in MySQL contains id, name and age fields. How can I get all users whose name are "Alan" and age > 16? It seems I need a filter, but I'm not sure how to implement such a filter or resource with Twisted and Klein. 在 2015-11-06 06:02:53，"Glyph Lefkowitz" <glyph@twistedmatrix.com> 写道： On Nov 5, 2015, at 1:28 AM, Wang Yan <snailcoder@163.com> wrote: Thank you to remind me of Klein. I'm very new to Twisted and Klein. What I've known is that Klein is a little like Flask, with which I can implement a UserAPI as follows: from flask import Flask from flask.ext.restful import Api, Resource api = Flask(__name__) api = Api(app) class UserAPI(Resource): def get(self, user_id): pass def post(self, user_id): pass api.add_resource(UserAPI, '/users/<int:id>', endpoint='user') Is there any similar usage in Klein? Yes; in fact this extension for Flask is similar to how twisted.web works internally. I think you're looking for something like this: from klein import run, route from twisted.web.resource import Resource class User(Resource, object): def __init__(self, user_id): super(User, self).__init__() self.user_id = user_id def render_GET(self, request): pass def render_POST(self, request): pass @route("/users/<int:user_id>") def user(request, user_id): return User(user_id) run("localhost", 8080)