自定义web框架
1、准备登录的html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<link rel="icon" href="favicon.ico">
</head>
<body>
<!--提交的位置 点击提交按钮相当于请求了这个网址-->
<form action="http://127.0.0.1:9000/auth" method="get">
<input type="text" name="username" placeholder="username">
<input type="password" name="password" placeholder="password">
<button>提交</button>
</form>
</body>
</html>
登录页面
登录页面
2、将HTML页面发送到服务端
# -*- coding: utf-8 -*-
# @Time : 2019/5/16 19:16
import webauth
from wsgiref.simple_server import make_server
from urllib.parse import parse_qs
def auth(environ):
# 判断提交按钮的请求是什么请求
if environ.get("REQUEST_METHOD")=="GET":
# 获取用户输入的信息 username=xiaohei&password=123
request_data = environ[‘QUERY_STRING‘]
# 对信息进行解析 {‘username‘: [‘xiaohei‘], ‘password‘: [‘123‘]}
re_data = parse_qs(request_data)
# 分别取出用户名和密码
username = re_data[‘username‘][0]
password = re_data[‘password‘][0]
# 提交给服务器进行验证
ret = webauth.auth(username,password)
# 服务器返回验证信息
if ret:
with open("websuccess.html", "rb") as f:
content = f.read()
return [content]
else:
# 验证失败
return [b"login failure"]
def login(environ):
with open("login.html","rb") as f:
content = f.read()
return [content]
def log(environ):
with open("favicon.ico","rb") as f:
content = f.read()
return [content]
li = [
("/login",login),
("/favicon.ico",log),
("/auth",auth),
]
def app(environ, start_response):
# 封装响应信息
start_response(‘200 OK‘, [(‘Content-Type‘, ‘text/html‘), (‘k1‘, ‘v1‘)])
# environ 封装好的请求数据,字典的格式
path = environ["PATH_INFO"]
for i in li:
# 判断用户输入的url
if i[0] == path:
# 调用url对应的函数
ret = i[1](environ)
return ret
break
else:
# 用户输入的网址不合法
return [b"404 not found"]
# 绑定ip和端口,有人连接就调用app函数
httpp = make_server("127.0.0.1",9000,app)
# 开始监听http请求
httpp.serve_forever()
服务端页面
服务端页面
3、数据库验证登录信息
# -*- coding: utf-8 -*-
# @Time : 2019/5/16 19:42
import pymysql
# 数据库信息验证,验证用户名和密码
def auth(username,password):
db = pymysql.connect(
host="127.0.0.1",
port=3306,
user="root",
password="root",
database="day53",
charset="utf8" # 不能写-
)
cursor = db.cursor(pymysql.cursors.DictCursor)
sql = "select * from info where username=%s and password=%s;"
res = cursor.execute(sql,[username,password])
print(res)
if res:
return True
else:
return False
验证登录
验证登录
4、返回登录成功页面
原文地址：https://www.cnblogs.com/youxiu123/p/11600216.html
时间： 2024-08-29 21:18:04