WSGI（Web Server Gateway Interface）是一种规范，它定义了使用python编写的web app与web server之间接口格式，实现web app与web server间的解耦。
python标准库提供的独立WSGI服务器称为wsgiref。
标准Web框架
#!/usr/bin/env python
#coding:utf-8
from wsgiref.simple_server import make_server
def RunServer(environ, start_response):
start_response('200 OK', [('Content-Type', 'text/html')])
return '<h1>Hello, web!</h1>'
if __name__ == '__main__':
httpd = make_server('', 8000, RunServer)
print "Serving HTTP on port 8000..."
httpd.serve_forever()
自定义Web框架
from wsgiref.simple_server import make_server
def login():
return 'login'
def index():
data = open('index.html','r').read()
return data
url = (
('/login/',login),
('/index/',index),
)
def RunServer(environ, start_response):
start_response('200 OK', [('Content-Type', 'text/html')])
geturl = environ['PATH_INFO']
for item in url:
if item[0] == geturl:
return item[1]()
else:
return '404'
if __name__ == '__main__':
httpd = make_server('', 8000, RunServer)
print "Serving HTTP on port 8000..."
httpd.serve_forever()
MVC和MTV 代码堆放的归类
MVC：Model、View、Controller
model存放数据操作，view存放html文件，controller负责逻辑处理
MTV：Model、Template、View
model存放数据操作，Template存放html文件，View负责逻辑处理
Django是 MTV模式
模板渲染jinja2
from wsgiref.simple_server import make_server
import time
from jinja2 import Template
import sys
reload(sys)
sys.setdefaultencoding('utf8') #//解决UnicodeDecodeError
def login():
return 'login'
def index():
data = open('index.html','r').read()
current_time = time.strftime('%Y-%m-%d %H:%M:%S')
template = Template(data) #使用jinja2模板处理
result = template.render(name='yangmv',
age='18',
current_time=current_time,
user_list=['wj','sb',],
num=1,
)
return result.encode('utf-8')
url = (
('/login/',login),
('/index/',index),
)
def RunServer(environ, start_response):
start_response('200 OK', [('Content-Type', 'text/html')])
geturl = environ['PATH_INFO']
for item in url:
if item[0] == geturl:
return item[1]()
else:
return '404'
if __name__ == '__main__':
httpd = make_server('', 8000, RunServer)
print "Serving HTTP on port 8000..."
httpd.serve_forever()
<html lang="en">
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<!--jinja2传值-->
<h1>{{ name }}</h1>
<h1>{{ age }}</h1>
<h1>{{ current_time }}</h1>
<!--jinja2实现for循环-->
<ul>
{% for item in user_list %}
<li>{{item}}</li>
{% endfor %}
</ul>
<!--jinja2实现if判断-->
{% if num == 1 %}
<h1>111</h1>
{% else %}
<h1>222</h1>
{% endif %}
</body>
</html>
