day55——django引入、小型django(socket包装的服务器)
day55吴超老师Django总网页:https://www.cnblogs.com/clschao/articles/10526431.html请求(网址访问,提交数据等等) request 响应(回复页面,回复数据等等) response web框架的本质及自定义web框架我们可以这样理解:所有的Web应用本质上就是一个socket服务端,而用户的浏览器就是一个socket客户端,基于请求做出响应,客户都先请求,服务端做出对应的响应,按照http协议的请求协议发送请求,服务端按照http协议的响应协议来响应请求,这样的网络通信,我们就可以自己实现Web框架了。 通过对socket的学习,我们知道网络通信,我们完全可以自己写了,因为socket就是做网络通信用的,下面我们就基于socket来自己实现一个web框架,写一个web服务端,让浏览器来请求,并通过自己的服务端把页面返回给浏览器,浏览器渲染出我们想要的效果。在后面的学习中,大家提前准备一些文件: html文件内容如下,名称为test.html: 详情看:https://www.cnblogs.com/clschao/articles/10391859.html#part_2 简单版回复html页面的web框架python代码server.py import socket server = socket.socket() server.bind(('127.0.0.1',8001)) server.listen() while 1: conn,addr = server.accept() from_brower_msg = conn.recv(1024) path = from_brower_msg.decode('utf-8').split(' ')[1] print(path) conn.send(b'HTTP/1.1 200 okrnrn') if path == '/': with open('05dong.html','rb')as f: data = f.read() elif path == '/style.css': with open('style.css','rb') as f: data = f.read() elif path == '/test.js': with open('test.js','rb') as f: data = f.read() elif path == '/1.jpg': with open('1.jpg','rb') as f: data = f.read() conn.send(data) conn.close() html代码04test.html <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> <link rel="stylesheet" href="style.css"> <!-- <link rel="icon" href="favicon.ico">--> </head> <body> <h1>24期官网</h1> <div> <img src="1.jpg" alt=""> </div> </body> <script src="test.js"></script> </html> 样式和js等文件style.css body{ background: red; } test.js alert(123); 图片文件--1.jpg 基础函数版python代码server.html import socket from threading import Thread server = socket.socket() server.bind(('127.0.0.1',8003)) server.listen() def home(conn): with open('04test.html','rb') as f: data = f.read() conn.send(data) conn.close() def css(conn): with open('style.css','rb') as f: data = f.read() conn.send(data) conn.close() def js(conn): with open('test.js','rb') as f: data = f.read() conn.send(data) conn.close() def pic(conn): with open('1.jpg','rb') as f: data = f.read() conn.send(data) conn.close() def nofount(conn): conn.send(b'not found 404!') conn.close() def ico(conn): with open('favicon.ico','rb') as f: data = f.read() conn.send(data) conn.close() urlpatterns = [ ('/',home),('/style.css',css),('/test.js',js),('/1.jpg',pic),('/favicon.ico',ico),] while 1: conn,addr = server.accept() from_brower_msg = conn.recv(1024) path = from_brower_msg.decode('utf-8').split(' ')[1] print(path) conn.send(b'HTTP/1.1 200 okrnrn') for url in urlpatterns: if path == url[0]: # ret = url[1]() t = Thread(target=url[1],args=(conn,)) t.start() break else: t = Thread(target=nofount,)) t.start() html代码04test.html <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> <link rel="stylesheet" href="style.css"> <link rel="icon" href="favicon.ico"> </head> <body> <div> <img src="1.jpg" alt=""> </div> <script src="test.js"></script> </body> </html> 样式和js等文件style.css body{ background: red; } test.js alert(123); 图片文件--1.jpg 进阶函数版python文件server.py import socket from urls import urlpatterns from threading import Thread import views server = socket.socket() server.bind(('127.0.0.1',8003)) server.listen() while 1: conn,addr = server.accept() from_brower_msg = conn.recv(1024) path = from_brower_msg.decode('utf-8').split(' ')[1] print(path) conn.send(b'HTTP/1.1 200 okrnrn') for url in urlpatterns: if path == url[0]: t = Thread(target=url[1],)) t.start() break else: t = Thread(target=views.nofount,)) t.start() 列表文件--urls.py import views urlpatterns = [ ('/',views.home),views.css),views.js),views.pic),views.ico),] 函数文件--views.py def home(conn): with open('05dong.html','rb') as f: data = f.read() conn.send(data) conn.close() html文件05dong.html <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> <link rel="stylesheet" href="style.css"> <!-- <link rel="icon" href="favicon.ico">--> </head> <body> <h1>24期官网</h1> <div> <img src="1.jpg" alt=""> </div> </body> <script src="test.js"></script> </html> 样式和js等文件style.css body{ background: red; } test.js alert(123); 图片文件--1.jpg 动态页面的web框架python文件server.py import socket server = socket.socket() server.bind(('127.0.0.1',8003)) server.listen() while 1: username = "朱凡宇" conn,addr = server.accept() from_brower_msg = conn.recv(1024) path = from_brower_msg.decode('utf-8').split(" ")[1] conn.send(b'HTTP/1.1 200 okrnrn') with open('dong.html','r',encoding='utf-8')as f: data = f.read() data = data.replace('%xxoo%',username) conn.send(data.encode()) conn.close() html文件dong.html <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> <h1>欢迎来到%xxoo%的首页</h1> </body> </html> 不同html页面的web框架python文件server import socket from urls import urlpatterns from threading import Thread import views server = socket.socket() server.bind(('127.0.0.1',)) t.start() break else: t = Thread(target=views.nofount,)) t.start() urls import views urlpatterns = [ ('/',('/center',views.person_center),] views def home(conn): with open('05dong.html','rb') as f: data = f.read() conn.send(data) conn.close() def person_center(conn): with open('center.html','rb') as f: data = f.read() conn.send(data) conn.close() def nofount(conn): conn.send(b'not found 404!') conn.close() html文件05dong.html <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> <h1>欢迎24期来到xx网站</h1> <a href="/center">个人中心</a> </body> </html> center.html <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> <h1>欢迎来到xx个人中心</h1> </body> </html> wsgiref模块python文件server from wsgiref.simple_server import make_server from urls import urlpatterns def application(environ,start_response): # environ 所有请求相关信息 # start_response --封装响应数据格式 path = environ['PATH_INFO'] start_response('200 ok',[]) # conn.send(b'HTTP/1.1 200 okrnrn') for url in urlpatterns: if path == url[0]: ret = url[1]() break return [ret] if __name__ == '__main__': h = make_server('127.0.0.1',8080,application) h.serve_forever() urls import views urlpatterns = [ ('/',] views def home(): with open('05dong.html','rb') as f: data = f.read() return data html文件05dong.html <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> <h1>欢迎24期来到xx网站</h1> </body> </html> jinja2模块python文件server import socket from urls import urlpatterns from threading import Thread import views server = socket.socket() server.bind(('127.0.0.1',)) t.start() break urls import views urlpatterns = [ ('/',# ('/center',# ('/style.css',# ('/test.js',# ('/1.jpg',# ('/favicon.ico',] views from jinja2 import Template def home(conn): # {% for i in hobby %} # <li>{{ i }}</li> # {% endfor %} with open('08jinja2test.html',encoding='utf-8') as f: data = f.read() t = Template(data) ret = t.render({'hobby':['金钱','女人','张达'],'name': '朱凡宇'}) conn.send(ret.encode('utf-8')) conn.close() html文件08jinja2test.html <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> <h1>{{ name }}个人介绍</h1> 我的爱好 <ul> {% for i in hobby %} <li>{{ i }}</li> {% endfor %} </ul> </body> </html> (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |