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Python Django Cookie 简单用法解析

yipeiwu_com5年前 (2020-03-06)Python基础

home.html：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>个人信息页面</title>
</head>
<body>
<p>个人信息页面</p> 
</body>
</html>

只有返回一串字符串

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>登录页面</title>
</head>
<body> 
<p>登录页面</p> 
<form action="/login/" method="post">
  {% csrf_token %}
  <p>
    账号：
    <input type="text" name="user">
  </p>
  <p>
    密码：
    <input type="text" name="pwd">
  </p>
  <p>
    <input type="submit" value="登录">
  </p>
</form>
</body>
</html>

要考虑加上 csrf_token，不然会 403

from django.shortcuts import render, redirect
from app01 import models
def login(request):
  if request.method == "POST":
    username = request.POST.get("user")
    password = request.POST.get("pwd")
    if username == "admin" and password == "admin":
      rep = redirect("/home/") # 得到一个响应对象
      rep.set_cookie("login", "success") # 设置 cookie
      return rep
  return render(request, "login.html")

set_cookie() 中的第一个参数为 key，第二个参数为 value

home 函数：

from django.shortcuts import render, redirect
from app01 import models 
def home(request):
  ret = request.COOKIES.get("login") # 获取 cookie 的 value
  if ret == "success":
    # cookie 验证成功
    return render(request, "home.html")
  else:
    return redirect("/login/")

输入账号、密码：admin，cookie 验证成功

给 cookie 加盐：

from django.shortcuts import render, redirect
from app01 import models
def login(request):
  if request.method == "POST":
    username = request.POST.get("user")
    password = request.POST.get("pwd")
    if username == "admin" and password == "admin":
      rep = redirect("/home/") # 得到一个响应对象
      # rep.set_cookie("login", "success") # 设置 cookie
      rep.set_signed_cookie("login", "success", salt="whoami") # 设置 cookie 并加盐
      return rep
  return render(request, "login.html")

home 函数：

from django.shortcuts import render, redirect
from app01 import models
def home(request):
  # ret = request.COOKIES.get("login") # 获取 cookie 的 value
  ret = request.get_signed_cookie("login", salt="whoami") # 获取加盐后 cookie 的 value
  if ret == "success":
    # cookie 验证成功
    return render(request, "home.html")
  else:
    return redirect("/login/")

输入账号、密码：admin，cookie 验证成功