目录
import socket
server = socket.socket()
server.bind(("127.0.0.1", 9527))
server.listen(5)
while True:
conn, addr = server.accept()
data = conn.recv(1024)
# print(data)
# 从请求首行可以拿到 路由(url后缀) 比如下面的 /index
"""
b'GET /index HTTP/1.1\r\n
Host: 127.0.0.1:9527\r\n
Connection: keep-alive\r\n
Cache-Control: max-age=0\r\n
Upgrade-Insecure-Requests: 1\r\n
User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36\r\n
Sec-Fetch-User: ?1\r\n
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3\r\n
Sec-Fetch-Site: none\r\n
Sec-Fetch-Mode: navigate\r\n
Accept-Encoding: gzip, deflate, br\r\n
Accept-Language: zh-CN,zh;q=0.9,en;q=0.8\r\n
Cookie: csrftoken=k3cTioICYawfIDXkMpRutozcAavo3T3MQbGKT7EJ0xbxGcqs263Xp9PWfDeEnhb2\r\n\r\n'
"""
data_str = data.decode("utf-8")
# 获取当前url后缀
current_routing = data_str.split("/r/n")[0].split(" ")[1]
# 响应首行 + 空行
conn.send(b"HTTP/1.1 200 OK\r\n\r\n")
if current_routing == "/index":
with open(r"index.html", "rb") as f:
# 响应体
conn.send(f.read())
else:
conn.send(b"404 error")
conn.close()
from wsgiref.simple_server import make_server
urls = [("/get_user_info", get_user_info)]
import pymysql
from jinja2 import Template
def get_user_info(env):
conn = pymysql.connect(
host="127.0.0.1",
port=3306,
user="root",
passwd="123",
db="mysite",
charset="utf8",
autocommit=True
)
cursor = conn.cursor(pymysql.cursors.DictCursor)
sql = "select * from user"
cursor.execute(sql)
user_list = cursor.fetchall()
with open(r"get_user_info.html", "r", encoding="utf-8") as f:
data = f.read()
temp = Template(data)
res = temp.render(user_list=user_list)
return res
def error(env):
return "404 error"
def run(env, response):
"""
:param env: 请求相关数据, 提请处理成了字典的形式
:param response: 响应相关数据
:return: 给前端的真正数据
"""
response("200 OK", [('', '')])
current_routing = env.get("PATH_INFO")
func = None
for url in urls:
if current_routing == url[0]:
func = url[1]
break
if func:
res = func(env)
else:
res = error(env)
return [res.encode("utf-8"), ]
if __name__ == '__main__':
server = make_server("127.0.0.1", 9527, run)
server.serve_forever()
get_user_info.html 文件<!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</h2>
<table class="table table-striped table-bordered table-hover">
<thead>
<tr>
<th>id</th>
<th>username</th>
<th>password</th>
</tr>
</thead>
<tbody>
{% for user_dict in user_list %}
<tr>
<td>{{ user_dict.id }}</td>
<td>{{ user_dict.username }}</td>
<td>{{ user_dict.password }}</td>
</tr>
{% endfor %}
</tbody>
</table>
</div>
</div>
</div>
</body>
</html>模板语法
a: socket部分
b: 路由匹配
c: 模板语法
django-admin startproject <projectname>python manage.py runserverpython manage.py runserver 127.0.0.1:8080python manage.py startapp <appname>templates 文件夹templates 文件路径settings 中注册方可生效
INSTALLED_APPS 中添加 app01.apps.App01Config 或者 aap01file--new project--django
TEMPLATES 文件夹的路径如果是空的, 需要手动添加TEMPLATES = [
{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
# 如果没有DIRS这一行需要手动添加
'DIRS': [os.path.join(BASE_DIR, 'templates')]
,
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
},
]
HttpResponse 返回字符串render 返回html文件redirect 重定向from django.shortcuts import render, HttpResponse, redirect
# Create your views here.
def index(request):
return HttpResponse("欢迎来到index页面")
def login(request):
user_dict = {"username": "bigb", "password": "123"}
return render(request, "login.html", {"user_info": user_dict})
def home(request):
# return redirect("/login")
return redirect("https://www.baidu.com")
views.py 中添加可视图函数, 需要在 urls.py 中添加路由和视图函数匹配关系原文：https://www.cnblogs.com/bigb/p/11908541.html