大猪 & 大兔

前言

在tornado中，并没有django那样NB的设计，很多东西要我们自己动手。比如django中司空见惯的分级路由。

构建

url_routers.py

提供两个函数用来做处理，代码：

# coding: utf-8
from __future__ import unicode_literals
from importlib import import_module
def include(module):
    res = import_module(module)
    urls = getattr(res, 'urls')
    return urls
def url_wrapper(urls):
    wrapper_list = []
    for url in urls:
        path, handles = url
        if isinstance(handles, (tuple, list)):
            for handle in handles:
                pattern, handle_class = handle
                wrap = ('{0}{1}'.format(path, pattern), handle_class)
                wrapper_list.append(wrap)
        else:
            wrapper_list.append((path, handles))
            print(wrapper_list)
    return wrapper_list

项目文件

controllers/test/urls.py

from __future__ import unicode_literals
from index import IndexHandler, Reverse
urls = [
    (r'hello/(\w+)', IndexHandler),
    (r'reverse/(\w+)', Reverse),
]

controllers/test/index.py

import tornado.web
class IndexHandler(tornado.web.RequestHandler):
    def get(self, name):
        greeting = self.get_argument('greeting', 'Hello')
        self.write(greeting + '{}, friendly user!'.format(name))
class Reverse(tornado.web.RequestHandler):
    def get(self, input_str):
        self.write(input_str[::-1])

最后，run.py启动项目

在这个项目中，其实只是用两个函数巧妙的拆分了urls路由。让代码帮我们拼接所有的urls。

# coding: utf-8
from __future__ import unicode_literals
import tornado.httpserver
import tornado.ioloop
import tornado.web
from url_router import include, url_wrapper
from controllers.test_hello.index import IndexHandler
from tornado.options import define, options
define("port", default=8000, help="run on the given port", type=int)
application = tornado.web.Application(url_wrapper([
    (r"/(\w+)", IndexHandler),
    (r"/test/", include('controllers.test_hello.urls')),
]))
if __name__ == "__main__":
    http_server = tornado.httpserver.HTTPServer(application)
    http_server.listen(options.port)
    tornado.ioloop.IOLoop.instance().start()