纯手撸web框架
（1）纯手撸
# encoding : utf8
# author : heart
# blog_url : https://www.cnblogs.com/ssrheart/
# time : 2024/2/26
import socket
server = socket.socket()
server.bind(('127.0.0.1', 8080))
server.listen(5)
while True:
conn, addr = server.accept()
data = conn.recv(1024)
data1 = data.decode('utf-8')
conn.send(b'HTTP/1.1 200 OK\r\n\r\n')
current_path = data1.split(' ')[1]
if current_path == '/index':
# conn.send(b'hello index')
with open('index.html', 'rb') as f:
conn.send(f.read())
elif current_path == '/login':
conn.send(b'hello login')
else:
conn.send(b'404 not found')
conn.close()
（2）基于wsgiref模块
# encoding : utf8
# author : heart
# blog_url : https://www.cnblogs.com/ssrheart/
# time : 2024/2/26
from wsgiref.simple_server import make_server
def run(request,response):
"""
:param request: 请求相关的所有数据
:param response: 相应相关的所有数据
:return: 返回给浏览器的数据
"""
# print(request) # 大字典 wsgiref模块帮处理好http格式的数据 封装成了字典更加方便的操作
response('200 OK', [])
current_path = request.get('PATH_INFO')
if current_path =='/index':
return [b'index']
elif current_path =='/login':
return [b'login']
return [b'404 not found']
if __name__ == '__main__':
data = make_server('127.0.0.1', 8080, run)
data.serve_forever()
"""
会实时监听127.0.0.1:8080地址 只要有客户端来了
都会交给run函数处理(加括号触发run)
flask启动
make_server('127.0.0.1', 8080, obj)
会触发__call__
"""
（3）wsgiref优化版
server:
# encoding : utf8
# author : heart
# blog_url : https://www.cnblogs.com/ssrheart/
# time : 2024/2/26
from wsgiref.simple_server import make_server
from urls import urls
from views import *
def run(request, response):
response('200 OK', [])
current_path = request.get('PATH_INFO')
func = None
for url in urls: # url (),()
if current_path == url[0]:
func = url[1]
break
if func:
res = func(request)
else:
res = error(request)
return [res.encode('utf-8')]
if __name__ == '__main__':
data = make_server('127.0.0.1', 8080, run)
data.serve_forever()
urls:
# encoding : utf8
# author : heart
# blog_url : https://www.cnblogs.com/ssrheart/
# time : 2024/2/26
from views import *
urls = [
('/index', index),
('/login', login),
('/xxx', xxx),
]
views:
# encoding : utf8
# author : heart
# blog_url : https://www.cnblogs.com/ssrheart/
# time : 2024/2/26
def index(request):
return 'index'
def login(request):
return 'login'
def xxx(request):
with open(r'templates/myxxx.html', 'r', encoding='utf-8') as f:
return f.read()
def error(request):
return '404 NOT FOUND'
动静态网页
（1）静态网页
- 页面上的数据是直接写死的 万年不变
（2）动态网页
- 数据是实时获取的
- eg:
1.后端获取当前时间展示到html页面上
2.数据是从数据库获取的展示到html页面上
- 后端:
def get_time(request):
current_time = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')
with open(r'templates/mytime.html', 'r', encoding='utf-8') as f:
data = f.read()
data = data.replace('asdasdasdasd', current_time)
return data
- 前端:
<body>
<h1>我是一个html</h1>
asdasdasdasd
</body>
（3）jinja2模版语法
- jinja2支持将数据传递到html页面并提供近似于后端的处理方式简单快捷的操作数据
pip install jinja2
- 后端:
def get_dict(request):
user_dict = {'name': 'heart', 'age': 18, 'gender': '男', 'hobby': 'music'}
with open(r'templates/mydict.html', 'r', encoding='utf-8') as f:
data = f.read()
temp = Template(data)
res = temp.render(user=user_dict)
# 给mydict.html传了一个值 页面上通过变量名user就能够拿到user_dict
return res
- 前端:
<body>
{{user}}
{{user.name}}
{{user.age}}
{{user.gender}}
<!-- {'name': 'heart', 'age': 18, 'gender': '男', 'hobby': 'music'} heart 18 男 -->
</body>
Django
（1）创建Django文件
django-admin startproject 文件名
（2）启动Django文件
python manage.py runserver
