使用wsgiref手撸web框架

模板

前言

要说到应用程序,就不得不提的就是cs架构和BS架构

所谓的cs架构就是client端和server端,就像我们的电脑上的qq,微信等应用程序

bs架构就是浏览器端和server端,我们不需要写客户端了,直接用浏览器接收来自server端的数据,进行解析

手写简易的server端

import socket

soc=socket.socket() #实例化socket

soc.bind(('127.0.0.1',8001)) #绑定ip地址和端口

soc.listen(5)#监听



while True:

    sock,addr=soc.accept()#等待客户端连接

    sock.send(b'HTTP/1.1 200 OK\r\nContent-Type:Text/html\r\n\r\n')#发送请求头和请求报文



    data=str(sock.recv(1024),encoding='utf-8')#将请求过来的数据解析成字符串

    print(data)

    data=data.split('\r\n')[0].split(' ')#将请求中的第一行提取出来

    if '/index' in data:

        with open('index.html','rb') as f:

            ff=f.read()



            print(ff)

        sock.send(ff)#响应请求内容

    else:

        sock.send(b'')

    sock.close()

使用wsgiref手撸web框架

web框架运行文件wsgirefserver.py

# 这是一个web框架的测试模板wsgiref

from wsgiref.simple_server import make_server



from urlss import *





def run(env, response):

    print(env)

    print(response)

    response('200 OK', [('Content-type', 'text/html')])  # 请求报文

    position = env['PATH_INFO']  # 拿到请求体中的路由

    func = None

    for url in urls:

        if url[0] == position:

            func = url[1]

            break

    if func:

        response = func()

    else:

        response = error()



    return [response.encode('utf-8'), ]





if __name__ == '__main__':

    ser = make_server('127.0.0.1', 8001, run)

    ser.serve_forever()

视图views.py

#!/user/bin/env python3

# -*- coding: utf-8 -*-

import time

import datetime

from jinja2 import Template

import sys

import pymysql





def index():

    with open('templates/index.html', 'r') as f:

        data = f.read()

    return data





def test():

    with open('templates/test.html', 'r') as f:

        data = f.read()

    tem = Template(data)

    response = tem.render(user={'name': 'andy', 'age': 18})



    return response





def timer():

    ctime = time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(time.time()))

    print(ctime)

    with open('templates/time.html', 'r') as f:

        data = f.read()

        data = data.replace('@@time@@', ctime)

    return data





def error():

    return ''





def user():

    conn = pymysql.connect(host='127.0.0.1', port=3306, user='root', password='admin', db='web')

    cur = conn.cursor(pymysql.cursors.DictCursor)

    cur.execute('select * from userinfo')

    user_list = cur.fetchall()

    print(user_list)



    with open('templates/user.html', 'r') as f:

        data = f.read()

    tem = Template(data)

    response = tem.render(user_list=user_list)

    return response





if __name__ == '__main__':

    user()

路由urlss.py

#!/user/bin/env python3

# -*- coding: utf-8 -*-

from views import *

urls = [

    ('/index', index),

    ('/timer', timer),

    ('/test', test),

    ('/user', user),



]

templates/index.html

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>Title</title>

</head>

<body>

<h3>index</h3>

<h2 style="color: red;">this is red wrod</h2>

<img src="http://106.14.187.174/static/blog/img/rest_framework.jpg" alt="">

</body>

</html>

templates/test.html

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>Title</title>

</head>

<body>

<h1>{{user.name}}

{{user.age}}</h1>



</body>

</html>

templates/time.html

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>Title</title>

</head>

<body>

@@time@@

</body>

</html>

templates/user.html

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>title</title>

</head>

<body>

<h1>hello</h1>

<h2>andy table</h2>

<table border="2">

    <thead>

    <tr>

        <th>id</th>

        <th>name</th>

        <th>password</th>

    </tr>

    </thead>

    <tbody>

    {% for user in user_list %}

    <tr>

        <td>{{user.id}}</td>

        <td>{{user.name}}</td>

        <td>{{user.password}}</td>

    </tr>

    {%endfor%}

    </tbody>

</table>

</body>

</html>

巴特西

使用wsgiref手撸web框架

前言

手写简易的server端

使用wsgiref手撸web框架

web框架运行文件wsgirefserver.py

视图views.py

路由urlss.py

templates/test.html

templates/time.html

templates/user.html

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