一个简单的动态web服务器

这个动态web服务器的思路是在静态服务器的基础上添加对URL的判断，如果URL中带有脚本信息，那么服务器会去执行脚本而不是直接返回静态界面

#-*-coding:utf-8-*-
import sys
import re
from socket import *
from multiprocessing import Process#设置静态文件根目录
HTTP_ROOT_DIR = "./html"WSGI_PYTHON_DIR = "./wsgipython"class HTTPServer(object):''''''def __init__(self):self.tcp_socket = socket(AF_INET, SOCK_STREAM)self.tcp_socket.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1)def start(self):self.tcp_socket.listen(128)while True:try:cli_socket, addrs = self.tcp_socket.accept()print("%s  %s:用户已连接" % (addrs[0], addrs[1]))p = Process(target=self.handle_client, args=(cli_socket,))p.start()cli_socket.close()except:print("服务器已经关闭")cli_socket.close()tcp_socket.close()def start_response(self, status, headers):self.response_start = "HTTP/1.1 " + status + "\r\n"server_headers = ""for header in headers:server_headers += "%s: %s\r\n"%headerself.response_headers = server_headersdef handle_client(self,cli_socket):# 接收数据request_data = cli_socket.recv(1024)# 解析HTTP报文协议 request_dataprint("requst_data:", request_data)# 处理响应数据request_lines = request_data.splitlines()print(request_lines)request_da = request_lines[0]# 获取用户想要的请求名file_name = re.match(r"\w+ +(/[^ ]*) ", request_da.decode("utf-8")).group(1)if file_name.endswith(".py"):# 处理py文件m = __import__(file_name[1:-3])env = {}response_body = m.application(env, self.start_response)response_start_line = self.response_startresponse_header = self.response_headerselse:# 判定一下特殊情况，字符串写在左侧可以避免把“==”写成“=”时当成赋值语句if "/" == file_name:file_name = "/index.html"# 打开请求文件try:f = open(HTTP_ROOT_DIR + file_name, "rb")file_data = f.read()f.close()except IOError:response_start_line = "HTTP/1.1 404 Not Found\r\n"response_header = "Server: My server\r\n"response_body = "Not Found"else:# 构造响应数据response_start_line = "HTTP/1.1 200 OK\r\n"response_header = "Server: My server\r\n"response_body = file_data.decode("utf-8")response = response_start_line + response_header + "\r\n" + response_bodyprint("response data:", response)# 发送数据cli_socket.send(bytes(response, "utf-8"))# cli_socket.send(response)# 关闭套接字cli_socket.close()print("链接已经断开")def bind(self, port):self.tcp_socket.bind(port)def main():sys.path.insert(1,WSGI_PYTHON_DIR)http_server = HTTPServer()http_server.bind(("",8000))http_server.start()if __name__ == '__main__':main()