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PYTHON的CGIServer的进化

2015-11-25 10:04 381 查看

按例程，一步一步理解如何从SOCKET,TCP,HTTP,CGIHTTP进化的。

最终，静态文件和脚本分享，且能处理FORM提交和展示。

下一步，到数据库？？：）

A，SOCKET

#HTTPserver
import socket

HOST = ''
PORT = 8088

text_content = '''
HTTP/1.x 200 OK
Content-Type: text/html

<html>
<head>
<title>WOW</title>
</head>
<body>
<p>WOW, Python Server</p>
<form name='input', action='/' method='post'>
First name :<input type='text' name='firstname'><br>
<input type='submit' value='submit'>
</form>
</body>
</html>
'''

f = open('hello.jpg', 'rb')
pic_content = '''
HTTP/1.1 200 OK
Content-Type: image/jpeg
'''
pic_content = pic_content + f.read()
f.close()

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind((HOST, PORT))
print 'HTTPserver is start listen...'

while True:
s.listen(3)
conn, addr = s.accept()
request = conn.recv(1024)
print request.split(' ')
method = request.split(' ')[0]
src = request.split(' ')[1]

if method == 'GET':
if src == '/hello.jpg':
content = pic_content
else:
content = text_content

print 'Connetcted by', addr
print 'Request is:', request
conn.sendall(content)
if method == 'POST':
form = request.split('\r\n')
idx = form.index('')
entry = form[idx:]
value = entry[-1].split('=')[-1]
conn.sendall(text_content + '\n <p>' + value + '</p>')

conn.close()

B，TCP

#HTTPserver
#import socket
import SocketServer

HOST = ''
PORT = 8080

text_content = '''
HTTP/1.x 200 OK
Content-Type: text/html

<html>
<head>
<title>WOW</title>
</head>
<body>
<p>WOW, Python Server</p>
<form name='input', action='/' method='post'>
First name :<input type='text' name='firstname'><br>
<input type='submit' value='submit'>
</form>
</body>
</html>
'''

f = open('hello.jpg', 'rb')
pic_content = '''
HTTP/1.1 200 OK
Content-Type: image/jpeg

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

class MyTCPHandler(SocketServer.BaseRequestHandler):

def handle(self):
print 'HTTPserver is start listen...'
request = self.request.recv(1024)
print 'Connetcted by', self.client_address[0]
print 'Request is:', request

method = request.split(' ')[0]
src = request.split(' ')[0]

if method == 'GET':
if src == '/hello.jpg':
content = pic_content
else:
content = text_content
self.request.sendall(content)
if method == 'POST':
form = request.split('\r\n')
idx = form.index('')
entry = form[idx:]
value = entry[-1].split('=')[-1]
self.request.sendall(text_content + '\n <p>' + value + '</p>')

server = SocketServer.TCPServer((HOST, PORT), MyTCPHandler)

server.serve_forever()

C，HTTP

#HTTPserver
#import socket
import SocketServer
import SimpleHTTPServer

HOST = ''
PORT = 8088

server = SocketServer.TCPServer((HOST, PORT), SimpleHTTPServer.SimpleHTTPRequestHandler)
server.serve_forever()

D，CGI

#HTTPserver
#import socket
import BaseHTTPServer
import CGIHTTPServer

HOST = ''
PORT = 8088

server = BaseHTTPServer.HTTPServer((HOST, PORT), CGIHTTPServer.CGIHTTPRequestHandler)
server.serve_forever()

（HTML及PY）

<head>
<title>WOW</title>
</head>
<html>
<p>Wow, Python Server</p>
<IMG src="hello.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>
~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~
import cgi

form = cgi.FieldStorage()

print 'Content-Type: text/html'
print
print '<p>Hello world!</p>'
print '<p>' + repr(form['firstname']) + '</p>'

截图：

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