Python --- 简单Web服务器的实现

import socket
import re

def service_client(new_socket):
	"""为这个客户端返回数据"""

    # 1. 接收浏览器发送过来的请求 ，即http请求  
    # GET / HTTP/1.1
    # .....
    request = new_socket.recv(1024).decode("utf-8") 
    request_lines = request.splitlines()
    print(">"*20)
    print(request_lines)
    
    # GET /index.html HTTP/1.1
    # get post put del
    file_name = ""
    ret = re.match(r"[^/]+(/[^ ]*)",request_lines[0])
    if ret:
        file_name = ret.group(1)
        if file_name == "/":
            file_name = "/index.html"

	 # 2. 返回http格式的数据，给浏览器
    try:
        f = open("./html"+ file_name,"rb")
    except:

        response = "HTTP/1.1 404 NOT FOUND\r\n"
        response += "\r\n"
        response += ".....no files ....."
        new_socket.send(response.encode("utf-8"))       
    else:
        html_content = f.read()
        f.close()
        # 2.1 准备发送给浏览器的数据---header
        response = "HTTP/1.1 200 OK\r\n"
        response += "\r\n"
        # 2.2 准备发送给浏览器的数据---boy
        # response += "hahahhah"

        # 将response header发送给浏览器
        new_socket.send(response.encode("utf-8"))
         # 将response body发送给浏览器
        new_socket.send(html_content)

    # 关闭套接
    new_socket.close()


def main():
    """用来完成整体的控制"""
    # 1. 创建套接字
    tcp_server_socket = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
    tcp_server_socket.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
     # 2. 绑定
    tcp_server_socket.bind(("",7799))
       # 3. 变为监听套接字
    tcp_server_socket.listen(128)
    
    while True:
     # 4. 等待新客户端的链接
        new_socket,client_addr = tcp_server_socket.accept()
           # 5. 为这个客户端服务
        service_client(new_socket)
    # 关闭监听套接字
    tcp_server_socket.close()


if __name__ == "__main__":
    main()

文中所需HTML文件夹在这里：

链接：https://pan.baidu.com/s/1Zq1R05K12BANCfGXW7MBjA
提取码：u3tr