# coding:utf-8
# 导入socket模块
import socket
# 导入正则表达式模块
import re
# 导入多进程模块
from multiprocessing import Process
# 设置静态文件根目录
HTML_ROOT_DIR = "./html"
# 定义个一个HTTPServer的类
class HTTPServer(object):
""""""
# 初始化方法
def __init__(self):
# 创建一个服务器socket套接字
self.server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
# socket地址重用配置
self.server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
# HTTPServer开启的方法
def start(self):
# 设置监听字节长度为128
self.server_socket.listen(128)
# 不间断的监听是否有人链接服务器
while True:
# 解析请求链接服务器的客户端信息
client_socket, client_address = self.server_socket.accept()
print("[%s:%s]用户连接上了" % client_address)
# 创建多进程handle_client处理客户端的请求
handle_client_process = Process(target=self.handle_client, args=(client_socket,))
# 开启多进程
handle_client_process.start()
# 关闭客户端socket套接字
client_socket.close()
# 多进程handle_client
def handle_client(self, client_socket):
"""处理客户端请求"""
# 获取客户端数据
request_data = client_socket.recv(1024)
print("request data:", request_data)
# 多请求数据用空格做分割处理
request_headers_lines = request_data.splitlines()
for line in request_headers_lines:
print(line)
# 解析请求报文
request_start_line = request_headers_lines[0]
# 利用正则表达式提取用户请求的文件名
file_name = re.match(r"\w+ +(/[^ ]*) ", request_start_line.decode("utf-8")).group(1)
print(file_name)
if "/" == file_name:
file_name = "/index.html"
# 打开文件 ,读取内容
try:
file = open(HTML_ROOT_DIR + file_name, "rb")
except IOError:
# 设置打开文件失败时返回的响应起始行\r\n是换行
response_start_line = "HTTP/1.1 404 Not Found\r\n"
# 设置打开文件失败时返回的响应头
response_headers = "Server:My server\r\n"
# 设置打开文件失败时返回的响应体
response_body = "The File is not found"
else:
# 打开成功时读取的客户端要请求的文件数据
file_data = file.read()
# 关闭文件
file.close()
# 构造响应数据
response_start_line = "HTTP/1.1 200 OK\r\n"
# 构造响应头
response_headers = "Server:My server\r\n"
# 构造响应体
response_body = file_data.decode("utf-8")
response = response_start_line + response_headers + "\r\n" + response_body
print("response data:", response)
# 向客户端返回响应数据
client_socket.send(bytes(response, "utf-8"))
# 关闭客户端连接
client_socket.close()
# 绑定端口
def bind(self, port):
self.server_socket.bind(("", port))
def main():
# 创建HTTPServer对象
http_server = HTTPServer()
# 绑定端口
http_server.bind(8000)
# 开启服务
http_server.start()
if __name__ == "__main__":
main()
说明:index.html在html文件夹中,html文件夹和static_web_server.py在同目录
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>My web</title>
</head>
<body>
<h1>Se7eN_HOU</h1>
</body>
</html>
在Web应用中,服务器把网页传给浏览器,实际上就是把网页的HTML代码发送给浏览器,让浏览器显示出来。而浏览器和服务器之间的传输协议是HTTP,所以: