【醍醐灌顶】Python编写http-server

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Python编写http-server

01-返回固定页面的数据

import socket

defhandle_client_request(n_socket, client_ip_port):# 5. 接收信息(请求报文)
    buf = n_socket.recv(4096)# buf  是请求报文if buf:print(buf.decode())# 6. 发送信息(响应报文)# 6.1 响应行
        response_line ='HTTP/1.1 200 OK\r\n'# 6.2 响应头
        response_header ='Server:PY\r\nName:Py42\r\n'# 6.3 空行 \r\n# 6.4 响应体(具体的页面数据), 返回 index.html 的页面
        f =open('static/index.html','rb')# 读取到是 bytes 类型
        data = f.read()
        f.close()# 合成响应体
        response =(response_line + response_header +'\r\n').encode()+ data
        n_socket.send(response)else:print(f'{client_ip_port} 下线了....')# 7. 关闭连接
    n_socket.close()if __name__ =='__main__':# 1. 创建 socket 对象
    server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)# 设置端口复用
    server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR,True)# 2. 绑定 IP 和端口
    server_socket.bind(("",8989))# 3. 设置监听
    server_socket.listen(128)# 4. 阻塞等待客户端的链接whileTrue:
        new_socket, ip_port = server_socket.accept()print(f'{ip_port} 连接了....')
        handle_client_request(new_socket, ip_port)

    server_socket.close()

02-返回指定也页面

import socket

defhandle_client_request(n_socket, client_ip_port):# 5. 接收信息(请求报文)
    buf = n_socket.recv(4096)# buf  是请求报文if buf:# print(buf.decode())
        buf = buf.decode()
        file_name = buf.split(' ',2)[1]print(f'请求的资源为: {file_name}')if file_name =='/':
            file_name ='/index.html'# 6. 发送信息(响应报文)# 6.1 响应行
        response_line ='HTTP/1.1 200 OK\r\n'# 6.2 响应头
        response_header ='Server:PY\r\nName:Py42\r\n'# 6.3 空行 \r\n# 6.4 响应体(具体的页面数据), 返回 index.html 的页面
        f =open('static'+ file_name,'rb')# 读取到是 bytes 类型
        data = f.read()
        f.close()# 合成响应体
        response =(response_line + response_header +'\r\n').encode()+ data
        n_socket.send(response)else:print(f'{client_ip_port} 下线了....')# 7. 关闭连接
    n_socket.close()if __name__ =='__main__':# 1. 创建 socket 对象
    server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)# 设置端口复用
    server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR,True)# 2. 绑定 IP 和端口
    server_socket.bind(("",8989))# 3. 设置监听
    server_socket.listen(128)# 4. 阻塞等待客户端的链接whileTrue:
        new_socket, ip_port = server_socket.accept()print(f'{ip_port} 连接了....')
        handle_client_request(new_socket, ip_port)

    server_socket.close()

03-处理不存在的页面请求

import socket

defhandle_client_request(n_socket, client_ip_port):# 5. 接收信息(请求报文)
    buf = n_socket.recv(4096)# buf  是请求报文if buf:# print(buf.decode())
        buf = buf.decode()
        file_name = buf.split(' ',2)[1]print(f'请求的资源为: {file_name}')if file_name =='/':
            file_name ='/index.html'# 6. 发送信息(响应报文)# 6.1 响应行
        response_line ='HTTP/1.1 200 OK\r\n'# 6.2 响应头
        response_header ='Server:PY\r\nName:Py42\r\n'# 6.3 空行 \r\n# 6.4 响应体(具体的页面数据), 返回 index.html 的页面try:
            f =open('static'+ file_name,'rb')# 读取到是 bytes 类型
            data = f.read()
            f.close()except FileNotFoundError:
            f =open('static/error.html','rb')
            data = f.read()
            f.close()
            response_line ='HTTP/1.1 404 NOT FOUND\r\n'# 合成响应体
        response =(response_line + response_header +'\r\n').encode()+ data
        n_socket.send(response)else:print(f'{client_ip_port} 下线了....')# 7. 关闭连接
    n_socket.close()if __name__ =='__main__':# 1. 创建 socket 对象
    server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)# 设置端口复用
    server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR,True)# 2. 绑定 IP 和端口
    server_socket.bind(("",8989))# 3. 设置监听
    server_socket.listen(128)# 4. 阻塞等待客户端的链接whileTrue:
        new_socket, ip_port = server_socket.accept()print(f'{ip_port} 连接了....')
        handle_client_request(new_socket, ip_port)

    server_socket.close()

04-静态 web 服务器-多任务版

import socket
import threading

defhandle_client_request(n_socket, client_ip_port):# 5. 接收信息(请求报文)
    buf = n_socket.recv(4096)# buf  是请求报文if buf:# print(buf.decode())
        buf = buf.decode()
        file_name = buf.split(' ',2)[1]print(f'请求的资源为: {file_name}')if file_name =='/':
            file_name ='/index.html'# 6. 发送信息(响应报文)# 6.1 响应行
        response_line ='HTTP/1.1 200 OK\r\n'# 6.2 响应头
        response_header ='Server:PY\r\nName:Py42\r\n'# 6.3 空行 \r\n# 6.4 响应体(具体的页面数据), 返回 index.html 的页面try:
            f =open('static'+ file_name,'rb')# 读取到是 bytes 类型
            data = f.read()
            f.close()except FileNotFoundError:
            f =open('static/error.html','rb')
            data = f.read()
            f.close()
            response_line ='HTTP/1.1 404 NOT FOUND\r\n'# 合成响应体
        response =(response_line + response_header +'\r\n').encode()+ data
        n_socket.send(response)else:print(f'{client_ip_port} 下线了....')# 7. 关闭连接
    n_socket.close()if __name__ =='__main__':# 1. 创建 socket 对象
    server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)# 设置端口复用
    server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR,True)# 2. 绑定 IP 和端口
    server_socket.bind(("",8989))# 3. 设置监听
    server_socket.listen(128)# 4. 阻塞等待客户端的链接whileTrue:
        new_socket, ip_port = server_socket.accept()print(f'{ip_port} 连接了....')
        sub_thread = threading.Thread(target=handle_client_request, args=(new_socket, ip_port))
        sub_thread.start()

    server_socket.close()

05-静态 web服务器-面向对象版

import socket
import threading

classHTTPWebServer(object):def__init__(self):
        self.server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        self.server_socket.bind(('',9090))
        self.server_socket.listen(128)def__del__(self):
        self.server_socket.close()defstart(self):whileTrue:
            new_socket, ip_port = self.server_socket.accept()print(f'{ip_port} 连接了.....')
            sub_thread = threading.Thread(target=self.handle_client_request, args=(new_socket, ip_port))
            sub_thread.start()@staticmethoddefhandle_client_request(n_socket, client_ip_port):# 接收请求报文
        buf = n_socket.recv(4096)if buf:
            buf = buf.decode()# 转换为 str# 解析资源路径
            file_name = buf.split(' ',2)[1]print(f"请求的资源未: {file_name}")if file_name =='/':
                file_name ='/index.html'# 6.1 响应行
            response_line ='HTTP/1.1 200 OK\r\n'# 6.2 响应头
            response_header ='Server:PY\r\nName:Py42\r\n'# 6.3 空行 \r\n# 6.4 响应体(具体的页面数据), 返回 index.html 的页面try:
                f =open('static'+ file_name,'rb')# 读取到是 bytes 类型
                data = f.read()
                f.close()except FileNotFoundError:
                f =open('static/error.html','rb')
                data = f.read()
                f.close()
                response_line ='HTTP/1.1 404 NOT FOUND\r\n'# 合成响应体
            response =(response_line + response_header +'\r\n').encode()+ data
            n_socket.send(response)else:print(f"{client_ip_port} 关闭了")

        n_socket.close()if __name__ =='__main__':# 1. 创建服务器对象
    web = HTTPWebServer()# 2. 启动服务器
    web.start()

06-python 获取终端命令的参数

"""
命令     参数    参数
python3 xxx.py  9898
需求: 获取参数
"""import sys
# sys.argv  类型是列表:print(sys.argv)

07-命令行指定端口启动

import socket
import threading
import sys

classHTTPWebServer(object):def__init__(self, port):
        self.server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        self.server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR,True)
        self.server_socket.bind(('', port))
        self.server_socket.listen(128)def__del__(self):
        self.server_socket.close()defstart(self):print('服务已启动,等待客户端连接....')whileTrue:
            new_socket, ip_port = self.server_socket.accept()print(f'{ip_port} 连接了.....')
            sub_thread = threading.Thread(target=self.handle_client_request, args=(new_socket, ip_port))
            sub_thread.start()@staticmethoddefhandle_client_request(n_socket, client_ip_port):# 接收请求报文
        buf = n_socket.recv(4096)if buf:
            buf = buf.decode()# 转换为 str# 解析资源路径
            file_name = buf.split(' ',2)[1]print(f"请求的资源未: {file_name}")if file_name =='/':
                file_name ='/index.html'# 6.1 响应行
            response_line ='HTTP/1.1 200 OK\r\n'# 6.2 响应头
            response_header ='Server:PY\r\nName:Py42\r\n'# 6.3 空行 \r\n# 6.4 响应体(具体的页面数据), 返回 index.html 的页面try:
                f =open('static'+ file_name,'rb')# 读取到是 bytes 类型
                data = f.read()
                f.close()except FileNotFoundError:
                f =open('static/error.html','rb')
                data = f.read()
                f.close()
                response_line ='HTTP/1.1 404 NOT FOUND\r\n'# 合成响应体
            response =(response_line + response_header +'\r\n').encode()+ data
            n_socket.send(response)else:print(f"{client_ip_port} 关闭了")

        n_socket.close()if __name__ =='__main__':# print('使用方法: python xxx.py 端口号')# 获取命令行参数
    buf = sys.argv
    iflen(buf)==2:# 代表有两个参数
        port =int(buf[1])else:
        port =8888print('使用的端口号是:', port)# 1. 创建服务器对象
    web = HTTPWebServer(port)# 2. 启动服务器
    web.start()