web服务器案例

HTTP 请求方式：

GET 获取数据

POST 修改数据

PUT 保存数据

DELETE 删除

OPTION 询问服务器的某种支持特性

HEAD 返回报文头

from socket import *
from  multiprocessing import *
HTML_ROOT_DIR = ""

def handle_client(client_socket):
    """处理客户端请求"""
    # 获取客户端请求数据
    request_data = client_socket.recv(1024)
    print("request data:",request_data)
    # 构造响应数据
    response_start_line="HTTP/1.1 200 Ok\r\n"
    response_headers = "Server:My server\r\n"
    response_body = "hello itcast"
    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"))
    client_socket.send(response.encode("utf-8"))
    # 关闭客户端连接
    client_socket.close()


if __name__ == "__main__":
    server_socket = socket(AF_INET,SOCK_STREAM)
    server_socket.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1)
    server_socket.bind(("",8000))
    server_socket.listen(128)
    while True:
        client_socket,client_address = server_socket.accept()
        #print("[%s,%s]用户连接上了" %(client_address[0],client_address[1]))
        print("[%s,%s]用户连接上了"%client_address)
        handle_client_process = Process(target = handle_client,args = (client_socket,))
        handle_client_process.start()
        client_socket.close()

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>我的网页</title>
</head>
<body>
    <h1>HI</h1>
    <p>welcome</p>
</body>
</html>

from socket import *
from  multiprocessing import *
import re
# 设置静态文件根目录
HTML_ROOT_DIR = "./html"

def handle_client(client_socket):
    """处理客户端请求"""
    # 获取客户端请求数据
    request_data = client_socket.recv(1024)
    print("request data:",request_data)
    request_lines = request_data.splitlines()
    for line in request_lines:
        print(line)
    # 解析请求报文
    # 'GET / HTTP/1.1'
    request_start_line = request_lines[0]
    # 提取用户请求的文件名
    file_name = re.match(r"\w+ +(/[^ ]*) ",request_start_line.decode("utf-8")).group(1)
    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:
        response_start_line = "HTTP/1.1 404 Not Found\r\n"
        response_headers = "Server:My server\r\n"
        response_body = "The file is not found!"
    else:
        file_data = file.read()
        file.close()
        # 构造响应数据
        response_start_line="HTTP/1.1 200 Ok\r\n"
        response_headers = "Server:My server\r\n"
        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"))
    client_socket.send(response.encode("utf-8"))
    # 关闭客户端连接
    client_socket.close()


if __name__ == "__main__":
    server_socket = socket(AF_INET,SOCK_STREAM)
    server_socket.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1)
    server_socket.bind(("",8000))
    server_socket.listen(128)
    while True:
        client_socket,client_address = server_socket.accept()
        #print("[%s,%s]用户连接上了" %(client_address[0],client_address[1]))
        print("[%s,%s]用户连接上了"%client_address)
        handle_client_process = Process(target = handle_client,args = (client_socket,))
        handle_client_process.start()
        client_socket.close()

web服务器案例

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