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'404')
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()
View Code
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 '404'
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()
View Code
路由urlss.py
#!/user/bin/env python3
# -*- coding: utf-8 -*-
from views import *
urls = [
('/index', index),
('/timer', timer),
('/test', test),
('/user', user),
]
View Code
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>