01 Web框架介绍

#!/usr/local/bin/python3#-*-coding:utf-8 -*-#Author:Felix Song ;Environment:pycharm 5.0.3(python3.6)#用python标准库开发一个自己的web框架from wsgiref.simple_server import ?make_server#第二步改造，获取conf中的内容import conf_urldef RunServer(environ,start_response): ???start_response(‘200 OK‘,[(‘Content-Type‘,‘text/html‘)]) ???#第一步，获取用户URL，debug模式下，在start_response加断点，然后浏览器访问在Variables下的environ中找 ???userUrl = environ[‘PATH_INFO‘] ???print(userUrl) ???urlpatterns = conf_url.routes() #第三步改造 ???#第二步改造 ???func = None ???# for item in conf_url.url: #第三步注释掉 ???for item in urlpatterns:#第三步改造 ???????if item[0] == userUrl: ???????????func = ?item[1] ???????????break ???if func: ???????return ?func() ???else: ???????return ?[bytes(‘<h1>404</h1>‘,encoding=‘utf-8‘)] ???‘‘‘ ???#第二步，根据URL输入的不同返回不同的值,但是如果页面很多用if else就比较费劲了...改造下，新建一个conf.py在里边定义所有的URL模型 ???if userUrl == ‘/index/‘: ???????return [bytes(‘<h1>index</h1>‘,encoding=‘utf-8‘)] ???elif userUrl == ‘/login/‘: ???????return [bytes(‘<h1>login</h1>‘,encoding=‘utf-8‘)] ???elif userUrl == ‘/logout/‘: ???????return [bytes(‘<h1>logout</h1>‘,encoding=‘utf-8‘)] ???else: ???????return [bytes(‘<h1>404 no found</h1>‘,encoding=‘utf-8‘)] ???‘‘‘if __name__ == ‘__main__‘: ???httpd = make_server(‘‘,8000,RunServer) ???print(‘Serving http on port 8000...‘) ???httpd.serve_forever()

#!/usr/local/bin/python3#-*-coding:utf-8 -*-#Author:Felix Song ;Environment:pycharm 5.0.3(python3.6)def index(): ???return [bytes(‘<h1>index</h1>‘,encoding=‘utf-8‘)] ???# return [b‘<h1>index</h1>‘]def login(): ???return [bytes(‘<h1>login</h1>‘,encoding=‘utf-8‘)]#第三步改造，路由系统def routes(): ???urlpatterns = ((‘/index‘,index),(‘/index‘,index),(‘/index‘,index)) ???return urlpatterns# #第二步改造，网页对照表# url = (# ????(‘/index‘,index),# ????(‘/index‘,index),# ????(‘/index‘,index),# )