django数据库操作

import socket

server = socket.socket()
server.bind((‘127.0.0.1‘, 8080))
server.listen(6)

while True:
    conn, addr = server.accept()
    # 拿到用户传入的数据 将其转为字符串状态
    recv_data = conn.recv(1024).decode(‘utf-8‘)
    print(recv_data)  # 字符串
    
    # 将获取的字符串进行切割获取列表
    path_list = recv_data.split(‘\r\n‘)[0]
    
    # 列表取索引获取访问路径
    current_path = path_list.split(‘ ‘)[1]
    
    print(current_path)  # /index

    # 根据HTTP协议进行数据交互
    conn.send(b‘HTTP/1.1 200 OK\r\n\r\n‘)

    # 根据访问路径不同 返回不同的结果
    if current_path == ‘/index‘:
        conn.send(b‘index‘)
    elif current_path == ‘/home‘:
        conn.send(b‘home‘)

    #     访问资源不存 返回404
    else:
        conn.send(b‘404 error‘)

‘‘‘
D:\Softwares\python3.6\python.exe "E:/work station/day51/django基础版本.py"

请求首行
GET / HTTP/1.1  

请求头
Host: 127.0.0.1:8080
Connection: keep-alive
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.100 Safari/537.36
Sec-Fetch-Mode: navigate
Sec-Fetch-User: ?1
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3
Sec-Fetch-Site: cross-site
Accept-Encoding: gzip, deflate, br
Accept-Language: zh-CN,zh;q=0.9,en;q=0.8

\r\n

请求体：用户没传入

   # conn.send(b‘HTTP/1.1 200 OK \r\n\r\n‘)

import socket

server = socket.socket()
server.bind((‘127.0.0.1‘, 8080))
server.listen(66)
from datetime import datetime

func = None


def index():
    now_time = datetime.now().strftime(‘%Y-%m-%d %X‘)
    with open(r‘h2.html‘, ‘r‘, encoding=‘utf-8‘) as f:
        data = f.read()

        # 读取HTML中的数据 将其替换成我们想要传给用户的数据 这样类似于我们将后端数据插入到HTML数据中
        time = data.replace(‘SR‘, now_time).encode(‘utf-8‘)
        return time


def home():
    now_time = datetime.now().strftime(‘%Y-%m-%d %X‘)
    with open(r‘h2.html‘, ‘r‘, encoding=‘utf-8‘) as f:
        data = f.read()

        # 读取HTML中的数据 将其替换成我们想要传给用户的数据 这样类似于我们将后端数据插入到HTML数据中
        time = data.replace(‘SR‘, now_time).encode(‘utf-8‘)
        return time


url_list = {
    ‘/index‘: index,
    ‘/home‘: home
}

while True:
    conn, addr = server.accept()
    recv_data = conn.recv(1024).decode(‘utf-8‘)
    conn.send(b‘HTTP/1.1 200OK\r\n\r\n‘)
    # 获取url地址
    url_path = recv_data.split(‘\r\n‘)[0].split(‘ ‘)[1]

    for key, value in url_list.items():
        if key == url_path:
            func = url_list.get(key)
            break
    if func:
        res = func()
    else:
        res = b‘404 error‘

    conn.send(res)
    conn.close()

# 导入模块
from wsgiref.simple_server import make_server


def index():
    data = b‘hello world!‘
    return data


def home():
    data = b‘hello world!‘
    return data


url_list = {
    ‘/index‘: index,
    ‘/home‘: home
}


def run_server(request, response):
    ‘‘‘
    与客户端进行数据交互的函数
    :param request: 用户请求数据
    :param response: 服务端回应数据
    :return:
    ‘‘‘
    print(request)  # 用户传来的数据自动变成字典格式
    response(‘200 ok‘, [])  # 回应客户端的格式

    url_path = request.get(‘PATH_INFO‘)
    func = None
    for key,value in url_list.items():
        if key == url_path:
            func = url_list.get(key)
            break
    if func:
        res = func()
    else:
        res = b‘404 error‘

    return [res]



if __name__ == ‘__main__‘:
    # 监听该地址加上端口号 如果有请求 直接调用该函数
    server = make_server(‘127.0.0.1‘, 8080, run_server)
    # 启动服务端
    server.serve_forever()

import pymysql
from jinja2 import Template
from wsgiref.simple_server import make_server



def mysql():
    conn = pymysql.connect(
        host=‘127.0.0.1‘,
        port=3306,
        user=‘root‘,
        password=‘123‘,
        database=‘day51‘,
        charset=‘utf8‘,
        autocommit=True
    )
    cursor = conn.cursor(pymysql.cursors.DictCursor)
    sql = "select * from user_info"
    affect_rows = cursor.execute(sql)
    data = cursor.fetchall()
    with open(r‘my_sql.html‘,‘r‘,encoding=‘utf-8‘) as f:
        recv_data = f.read()
    temp = Template(recv_data)
    res = temp.render(user_list=data).encode(‘utf-8‘)
    return res


url_list = {
    ‘/mysql‘: mysql,

}



def run(request, response):
    url_path = request[‘PATH_INFO‘]
    response(‘200 ok‘, [])
    func = None
    for key, value in url_list.items():
        if key == url_path:
            func = url_list.get(key)
            break

    if func:

        res = func()
    else:
        res = b‘404 error‘

    return [res]


if __name__ == ‘__main__‘:
    server = make_server(‘127.0.0.1‘, 8080, run)
    print(‘启动‘)
    server.serve_forever()

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.min.js"></script>
    <link href="https://cdn.bootcss.com/twitter-bootstrap/3.4.1/css/bootstrap.min.css" rel="stylesheet">
    <script src="https://cdn.bootcss.com/twitter-bootstrap/3.4.1/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">

    <div class="row">
        <div class="col-md-8 col-md-offset-2">
            <h2 class="text-center">用户数据展示</h2>
            <table class="table table-hover table-bordered table-striped">
                <thead>
                <tr>
                    <th class="text-center">id</th>
                    <th class="text-center">username</th>
                    <th class="text-center">age</th>
                </tr>
                </thead>
                <tbody>
                {%for user_dict in user_list%}
                <tr>
                    <td class="text-center">{{user_dict.id}}</td>
                    <td class="text-center">{{user_dict.name}}</td>
                    <td class="text-center">{{user_dict.age}}</td>
                </tr>
                {%endfor%}
                </tbody>
            </table>
        </div>

    </div>
</div>

</body>
</html>