Web应用和Web框架

import socket   # 导入模块

def handle_request(client):
    request_data = client.recv(1024)  # 接收数据
    print(‘request data:‘,request_data)
    client.send(‘HTTP/1.1 200 OK\r\n\r\n‘.encode(‘utf8‘))  # 发送请求
    client.send("<h1 style=‘color:blue‘>Hello world</h1>".encode(‘utf8‘)) 


def main():
    sock = socket.socket(socket.AF_INET,socket.SOCK_STREAM) # 实例化
    sock.bind((‘localhost‘,8800)) # 指定连接的服务器及端口
    sock.listen(5)  # 监听

    while True:
        print(‘waiting....‘)
        connection,address = sock.accept()  # 收到数据
        handle_request(connection)  #处理连接
        connection.close()  # 关闭连接

if __name__ == ‘__main__‘:
    main()

#！/usr/bin/env python3
#!-*- coding:utf-8-*-
# write by cc

from wsgiref.simple_server import make_server

def application(environ,start_response):
    # environ : 按照http协议解析数据，解析后的数据格式为字典
    # start_response : 按照http协议的格式组装数据
    print(environ,type(environ)) # <class ‘dict‘>
    # return [b"<h1>Hello Web</h1>"] # 返回的格式必须是列表，内容必须是二进制数据
    path = environ.get("PATH_INFO")  # 获取当前路径
    start_response(‘200 Ok‘,[(‘Content_Type‘,‘text/html‘)]) #
    if path == ‘/index‘:
        with open(‘index.html‘,‘r‘) as f:
            data = f.read()
    elif path == ‘/login‘:
        with open(‘login.html‘,‘r‘) as f:
            data = f.read()

    return [data.encode(‘utf-8‘)]

‘‘‘
 environ = {‘ALLUSERSPROFILE‘: ‘C:\\ProgramData‘, ‘APPDATA‘: ‘C:\\Users\\CC9102\\AppData\\Roaming‘, ‘COMMONPROGRAMFILES‘: ‘C:\\Program Files\\Common Files‘, ‘COMMONPROGRAMFILES(X86)‘: ‘C:\\Program Files (x86)\\Common Files‘, ‘COMMONPROGRAMW6432‘: ‘C:\\Program Files\\Common Files‘, ‘COMPUTERNAME‘: ‘DESKTOP-3UMV17V‘, ‘COMSPEC‘: ‘C:\\Windows\\system32\\cmd.exe‘, ‘DRIVERDATA‘: ‘C:\\Windows\\System32\\Drivers\\DriverData‘, ‘FPS_BROWSER_APP_PROFILE_STRING‘: ‘Internet Explorer‘, ‘FPS_BROWSER_USER_PROFILE_STRING‘: ‘Default‘, ‘HOMEDRIVE‘: ‘C:‘, ‘HOMEPATH‘: ‘\\Users\\CC9102‘, ‘LOCALAPPDATA‘: ‘C:\\Users\\CC9102\\AppData\\Local‘, ‘LOGONSERVER‘: ‘\\\\DESKTOP-3UMV17V‘, ‘NUMBER_OF_PROCESSORS‘: ‘4‘, ‘ONEDRIVE‘: ‘C:\\Users\\CC9102\\OneDrive‘, ‘ONEDRIVECONSUMER‘: ‘C:\\Users\\CC9102\\OneDrive‘, ‘OS‘: ‘Windows_NT‘, ‘PATH‘: ‘D:\\python37\\;D:\\python37\\Scripts\\;D:\\python27\\;D:\\python27\\Scripts;C:\\Windows\\system32;C:\\Windows;C:\\Windows\\System32\\Wbem;C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\;C:\\Windows\\System32\\OpenSSH\\;D:\\UltraEdit;D:\\Calibre\\;C:\\Users\\CC9102\\AppData\\Local\\Microsoft\\WindowsApps;D:\\Bandizip\\‘, ‘PATHEXT‘: ‘.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC;.PY;.PYW‘, ‘PROCESSOR_ARCHITECTURE‘: ‘AMD64‘, ‘PROCESSOR_IDENTIFIER‘: ‘Intel64 Family 6 Model 61 Stepping 4, GenuineIntel‘, ‘PROCESSOR_LEVEL‘: ‘6‘, ‘PROCESSOR_REVISION‘: ‘3d04‘, ‘PROGRAMDATA‘: ‘C:\\ProgramData‘, ‘PROGRAMFILES‘: ‘C:\\Program Files‘, ‘PROGRAMFILES(X86)‘: ‘C:\\Program Files (x86)‘, ‘PROGRAMW6432‘: ‘C:\\Program Files‘, ‘PSMODULEPATH‘: ‘C:\\Program Files\\WindowsPowerShell\\Modules;C:\\Windows\\system32\\WindowsPowerShell\\v1.0\\Modules‘, ‘PUBLIC‘: ‘C:\\Users\\Public‘, ‘PYCHARM_HOSTED‘: ‘1‘, ‘PYTHONIOENCODING‘: ‘UTF-8‘, ‘PYTHONPATH‘: ‘E:\\PyCharmFiles‘, ‘PYTHONUNBUFFERED‘: ‘1‘, ‘SESSIONNAME‘: ‘Console‘, ‘SYSTEMDRIVE‘: ‘C:‘, ‘SYSTEMROOT‘: ‘C:\\Windows‘, ‘TEMP‘: ‘C:\\Users\\CC9102\\AppData\\Local\\Temp‘, ‘TMP‘: ‘C:\\Users\\CC9102\\AppData\\Local\\Temp‘, ‘USERDOMAIN‘: ‘DESKTOP-3UMV17V‘, ‘USERDOMAIN_ROAMINGPROFILE‘: ‘DESKTOP-3UMV17V‘, ‘USERNAME‘: ‘CC9102‘, ‘USERPROFILE‘: ‘C:\\Users\\CC9102‘, ‘WINDIR‘: ‘C:\\Windows‘, ‘SERVER_NAME‘: ‘DESKTOP-3UMV17V.DHCP HOST‘, ‘GATEWAY_INTERFACE‘: ‘CGI/1.1‘, ‘SERVER_PORT‘: ‘8080‘, ‘REMOTE_HOST‘: ‘‘, ‘CONTENT_LENGTH‘: ‘‘, ‘SCRIPT_NAME‘: ‘‘, ‘SERVER_PROTOCOL‘: ‘HTTP/1.1‘, ‘SERVER_SOFTWARE‘: ‘WSGIServer/0.2‘, ‘REQUEST_METHOD‘: ‘GET‘, ‘PATH_INFO‘: ‘/‘, ‘QUERY_STRING‘: ‘‘, ‘REMOTE_ADDR‘: ‘127.0.0.1‘, ‘CONTENT_TYPE‘: ‘text/plain‘, ‘HTTP_HOST‘: ‘127.0.0.1:8080‘, ‘HTTP_CONNECTION‘: ‘keep-alive‘, ‘HTTP_CACHE_CONTROL‘: ‘max-age=0‘, ‘HTTP_UPGRADE_INSECURE_REQUESTS‘: ‘1‘, ‘HTTP_USER_AGENT‘: ‘Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.134 Safari/537.36 Vivaldi/2.5.1525.40‘, ‘HTTP_ACCEPT‘: ‘text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3‘, ‘HTTP_ACCEPT_ENCODING‘: ‘gzip, deflate, br‘, ‘HTTP_ACCEPT_LANGUAGE‘: ‘zh-CN,zh;q=0.9‘, ‘wsgi.input‘: <_io.BufferedReader name=468>, ‘wsgi.errors‘: <_io.TextIOWrapper name=‘<stderr>‘ mode=‘w‘ encoding=‘UTF-8‘>, ‘wsgi.version‘: (1, 0), ‘wsgi.run_once‘: False, ‘wsgi.url_scheme‘: ‘http‘, ‘wsgi.multithread‘: True, ‘wsgi.multiprocess‘: False, ‘wsgi.file_wrapper‘: <class ‘wsgiref.util.FileWrapper‘>} <class ‘dict‘>

 ‘PATH_INFO‘: ‘/‘, ‘QUERY_STRING‘: ‘‘, ‘REMOTE_ADDR‘: ‘127.0.0.1‘,
 ‘CONTENT_TYPE‘: ‘text/plain‘,
 ‘HTTP_HOST‘: ‘127.0.0.1:8080‘,
 ‘HTTP_CONNECTION‘: ‘keep-alive‘, 
‘‘‘


# 封装socket(实例化一个socket对象，并传入参数)
httped = make_server("",8080,application)

# 等待用户连接，相当于 conn,addr = sock.accept()，用户连接后自动调用application方法
httped.serve_forever()