1.django-admin startproject helloword 创建项目helloword

2.开始一个app，写一个hello world
python manage.py startapp hello

4.settings db

DATABASES = {

    'default': {

        'ENGINE': 'django.db.backends.mysql',                    # 你的数据库引擎

        'HOST': "localhost",                                     # 你的数据地址，localhost代表本地

        "PORT": 3306,                                            # 端口， 数据库的默认端口一般是3306

        "USER": "root",                                         # 用户名

        "PASSWORD": "",                                      # 密码

        "NAME": "study"                                          # 库名

    }

}

# CACHES = {

#     "default":{

#         "BACKEND":"django_redis.cache.RedisCache",

#         "LOCATION":"redis://127.0.0.1:6379/",

#         "OPTIONS":{

#             "CLIENT_CLASS":"django_redis.client.DefaultClient"

#         }

#     }

# }

4.view

import json

from django.shortcuts import render, redirect, reverse

from django.http import HttpResponse

from django.contrib.auth import authenticate, login, logout

from django.contrib import messages  # 错误提示信息

from django.views.decorators.csrf import csrf_exempt

from io import BytesIO

from django.views import View

from django.forms.utils import ErrorDict

from django.core.cache import cache

from show.models import Book

# Create your views here.

class CacheVisit(View):

    """

    访问数据库缓存

    from django.core.cache import cache

    """

    def get(self, request):

        books = Book.objects.all()

        return render(request, '1.html', locals())

5. 1.html

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>Title</title>

    <style>

        * {

            margin: 0;

            padding: 0;

        }

    </style>

</head>

<body>

    {% for book in books %}

        {{ book.title }}&nbsp;&nbsp;&nbsp;

        {{ book.author }}&nbsp;&nbsp;&nbsp;

        {{ book.download_text }}&nbsp;&nbsp;&nbsp;

        {{ book.new }}<br>

    {% endfor %}

</body>

</html>

6.url路由

from django.conf.urls import url

from django.contrib import admin

from show import views as view

urlpatterns =(

url(r'^admin/', admin.site.urls),

url(r'^show/',view.CacheVisit.as_view()),

)

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