用Python socket 实现一个简单的http服务器（post 与get 的区别）、CGI、WSGI、MVC

本文介绍了如何使用Python的socket实现一个简单的HTTP服务器，探讨了GET和POST请求的区别，并讲解了CGI、WSGI的概念。文中还通过实例展示了如何运行WSGI服务，最后简述了MVC模式在Web开发中的应用。

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预备知识：

关于http 协议的基础请参考这里。

关于socket 基础函数请参考这里。

关于python 网络编程基础请参考这里。

一、python socket 实现的简单http服务器

废话不多说，前面实现过使用linux c 或者python 充当客户端来获取http 响应，也利用muduo库实现过一个简易http服务器，现在来实现一个python版

的简易http服务器，代码改编自 http://www.cnblogs.com/vamei/ and http://www.liaoxuefeng.com/

httpServer.py

Python Code

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#!/usr/bin/env python
#coding=utf-8

import socket
import re

HOST = ''
PORT = 8000

#Read index.html, put into HTTP response data
index_content = '''
HTTP/1.x 200 ok
Content-Type: text/html

'''

file = open('index.html', 'r')
index_content += file.read()
file.close()

#Read reg.html, put into HTTP response data
reg_content = '''
HTTP/1.x 200 ok
Content-Type: text/html

'''

file = open('reg.html', 'r')
reg_content += file.read()
file.close()

#Read picture, put into HTTP response data
file = open('T-mac.jpg', 'rb')
pic_content = '''
HTTP/1.x 200 ok
Content-Type: image/jpg

'''
pic_content += file.read()
file.close()

#Configure socket
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.bind((HOST, PORT))
sock.listen(100)

#infinite loop
while True:
 # maximum number of requests waiting
 conn, addr = sock.accept()
 request = conn.recv(1024)
 method = request.split(' ')[0]
 src = request.split(' ')[1]

 print 'Connect by: ', addr
 print 'Request is:\n', request

 #deal wiht GET method
 if method == 'GET':
 if src == '/index.html':
 content = index_content
 elif src == '/T-mac.jpg':
 content = pic_content
 elif src == '/reg.html':
 content = reg_content
 elif re.match('^/\?.*$', src):
 entry = src.split('?')[1] # main content of the request
 content = 'HTTP/1.x 200 ok\r\nContent-Type: text/html\r\n\r\n'
 content += entry
 content += ' register successs!'
 else:
 continue


 #deal with POST method
 elif method == 'POST':
 form = request.split('\r\n')
 entry = form[-1] # main content of the request
 content = 'HTTP/1.x 200 ok\r\nContent-Type: text/html\r\n\r\n'
 content += entry
 content += ' register successs!'