python的web页面_python之web框架(1)：完成静态页面web服务器

python的web框架(1)

1.首先写一个最简单的web服务器，只能给客户回应一个固定的hello world的页面。

from socket import *

from multiprocessing import Process

def deal(conn):

recv_data = conn.recv(1024).decode('gb2312')

print(recv_data)

conn.send('HTTP/1.1 200 OK \r\n\r\n

hello world

'.encode('gb2312'))

def main():

s = socket(AF_INET, SOCK_STREAM)

s.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1)

s.bind(('',8000))

s.listen(1023)

while 1:

conn, user_info = s.accept()

print(user_info)

p = Process(target=deal, args=(conn,))

p.start()

conn.close()

if __name__ == '__main__':

main()

2.根据用户请求的页面，打开页面文件，读取，并回复给用户，完成多进程web静态页面服务器

#!/usr/bin/env python3

# coding:utf-8

from socket import *

from multiprocessing import Process

def deal(conn):

recv_data = conn.recv(1024).decode('gb2312')

recv_data_head = recv_data.splitlines()[0]

print('------', recv_data_head)

request_method, request_path, http_version = recv_data_head.split()

# 去掉url中的?和之后的参数

request_path = request_path.split('?')[0]

if request_path == '/':

request_path = '/index.html'

file_name = "." + request_path

try:

f = open(file_name, 'rb')

except IOError:

conn.send(b'HTTP/1.1 404 ERROR \r\n\r\n

Page is not exsit .

')

return

read_data = f.read()

send_data = b'HTTP/1.1 200 OK \r\n\r\n' + read_data

conn.send(send_data)

f.close()

def main():

s = socket(AF_INET, SOCK_STREAM)

s.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1)

s.bind(('',8000))

s.listen(1023)

while 1:

conn, user_info = s.accept()

print(user_info)

p = Process(target=deal, args=(conn,))

p.start()

conn.close() # 进程会复制出一个新的conn,所以这里的conn需要关闭

if __name__ == '__main__':

main()

3.为了方便操作，可以将之前的函数式编程改成面向对象编程。将所有的方法集成到一个类中，这样更加方便，也更易于使用者了解和使用。

#!/usr/bin/env python3

# coding:utf-8

from socket import *

from multiprocessing import Process

class MyWebServer(object):

@staticmethod

def deal(conn):

recv_data = conn.recv(1024).decode('gb2312')

recv_data_head = recv_data.splitlines()[0]

print('------', recv_data_head)

request_method, request_path, http_version = recv_data_head.split()

# 去掉url中的?和之后的参数

request_path = request_path.split('?')[0]

if request_path == '/':

request_path = '/index.html'

file_name = "." + request_path

try:

f = open(file_name, 'rb')

except IOError:

conn.send(b'HTTP/1.1 404 ERROR \r\n\r\n

Page is not exsit .

')

return

read_data = f.read()

send_data = b'HTTP/1.1 200 OK \r\n\r\n' + read_data

conn.send(send_data)

f.close()

def __init__(self):

self.s = socket(AF_INET, SOCK_STREAM)

self.s.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1)

self.s.bind(('',8000))

self.s.listen(1023)

def start(self):

while 1:

conn, user_info = self.s.accept()

print(user_info)

p = Process(target=self.deal, args=(conn,))

p.start()

conn.close() # 进程会复制出一个新的conn,所以这里的conn需要关闭

s = MyWebServer()

s.start()