我们将在这里不断改写上一篇文章中的程序，并引入更高级的Python包，以写出更成熟的Python服务器。
# A messy HTTP server based on TCP socket
import socket
# Address
HOST = ''
PORT = 8000
text_content = '''
HTTP/1.x 200 OK
Content-Type: text/html
<head>
<title>WOW</title>
</head>
<html>
<p>Wow, Python Server</p>
<IMG src="test.jpg"/>
<form name="input" action="/" method="post">
First name:<input type="text" name="firstname"><br>
<input type="submit" value="Submit">
</form>
</html>
'''
f = open('test.jpg','rb')
pic_content = '''
HTTP/1.x 200 OK
Content-Type: image/jpg
'''
pic_content = pic_content + f.read()
# Configure socket
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind((HOST, PORT))
# Serve forever
while True:
s.listen(3)
conn, addr = s.accept()
request = conn.recv(1024) # 1024 is the receiving buffer size
method = request.split(' ')[0]
src = request.split(' ')[1]
print 'Connected by', addr
print 'Request is:', request
# if GET method request
if method == 'GET':
# if ULR is /test.jpg
if src == '/test.jpg':
content = pic_content
else: content = text_content
# send message
conn.sendall(content)
# if POST method request
if method == 'POST':
form = request.split('rn')
idx = form.index('') # Find the empty line
entry = form[idx:] # Main content of the request
value = entry[-1].split('=')[-1]
conn.sendall(text_content + 'n <p>' + value + '</p>')
######
# More operations, such as put the form into database
# ...
######
# close connection
conn.close()SocketServer:
# use TCPServer
import SocketServer
HOST = ''
PORT = 8000
text_content = '''
HTTP/1.x 200 OK
Content-Type: text/html
<head>
<title>WOW</title>
</head>
<html>
<p>Wow, Python Server</p>
<IMG src="test.jpg"/>
<form name="input" action="/" method="post">
First name:<input type="text" name="firstname"><br>
<input type="submit" value="Submit">
</form>
</html>
'''
f = open('test.jpg','rb')
pic_content = '''
HTTP/1.x 200 OK
Content-Type: image/jpg
'''
pic_content = pic_content + f.read()
# This class defines response to each request
class MyTCPHandler(SocketServer.BaseRequestHandler):
def handle(self):
# self.request is the TCP socket connected to the client
request = self.request.recv(1024)
print 'Connected by',self.client_address[0]
print 'Request is', request
method = request.split(' ')[0]
src = request.split(' ')[1]
if method == 'GET':
if src == '/test.jpg':
content = pic_content
else: content = text_content
self.request.sendall(content)
if method == 'POST':
form = request.split('rn')
idx = form.index('') # Find the empty line
entry = form[idx:] # Main content of the request
value = entry[-1].split('=')[-1]
self.request.sendall(text_content + 'n <p>' + value + '</p>')
######
# More operations, such as put the form into database
# ...
######
# Create the server
server = SocketServer.TCPServer((HOST, PORT), MyTCPHandler)
# Start the server, and work forever
server.serve_forever()<head> <title>WOW</title> </head> <html> <p>Wow, Python Server</p> <IMG src="test.jpg"/> <form name="input" action="/" method="post"> First name:<input type="text" name="firstname"><br> <input type="submit" value="Submit"> </form> </html>
SimpleHTTPServer: # Simple HTTPsERVER import SocketServer import SimpleHTTPServer HOST = '' PORT = 8000 # Create the server, SimpleHTTPRequestHander is pre-defined handler in SimpleHTTPServer package server = SocketServer.TCPServer((HOST, PORT), SimpleHTTPServer.SimpleHTTPRequestHandler) # Start the server server.serve_forever()
CGIHTTPServer: # A messy HTTP server based on TCP socket import BaseHTTPServer import CGIHTTPServer HOST = '' PORT = 8000 # Create the server, CGIHTTPRequestHandler is pre-defined handler server = BaseHTTPServer.HTTPServer((HOST, PORT), CGIHTTPServer.CGIHTTPRequestHandler) # Start the server server.serve_forever()
<head> <title>WOW</title> </head> <html> <p>Wow, Python Server</p> <IMG src="test.jpg"/> <form name="input" action="cgi-bin/post.py" method="post"> First name:<input type="text" name="firstname"><br> <input type="submit" value="Submit"> </form> </html>
我们创建一个cgi-bin的文件夹，并在cgi-bin中放入如下post.py文件，也就是我们的CGI脚本：
#!/usr/bin/env python # Written by Vamei import cgi form = cgi.FieldStorage() # Output to stdout, CGIHttpServer will take this as response to the client print "Content-Type: text/html" # HTML is following print # blank line, end of headers print "<p>Hello world!</p>" # Start of content print "<p>" + repr(form['firstname']) + "</p>"
第一行必须要有，以便告诉Python服务器，脚本所使用的语言 (我们这里的CGI是Python，当然也可以是别的语言，比如bash)。
cgi包用于提取request中提交的表格信息(我们暂时不深入cgi包)。脚本只负责将所有的结果输出到标准输出(使用print)。原文地址：http://blog.csdn.net/xufeng0991/article/details/40339289
