实际开发中，会有多个html页面，这些html页面中有很多东西是重复的， 比如引入的css,js的路径，还有一些内容的重复， 为了避免进行多次重复的操作，就需要定义一个公共的页面，然后其他页面复用/继承这个公共的页面， 再加上自己本身不同的内容
1.首先，定义一个公共的base.html页面，这其中的
附上代码如下：
<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta name="referrer" content="origin">
<!-- TDK and ICO -->
<title>{{ web_site.title }}</title>
<meta name="description"
content="{{ web_site.desc }}">
<meta name="keywords" content="Python自学,Python爬虫,Django博客,Python web开发,个人博客">
<!--站长验证-->
<link rel="shortcut icon" href="/static/blog/img/favicon.ico" type="image/x-icon"/>
<!-- Bootstrap and font-awesome CSS -->
<link href="https://cdn.bootcss.com/twitter-bootstrap/4.3.1/css/bootstrap.min.css" rel="stylesheet">
<link href="https://cdn.bootcss.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet">
<script src="/static/js/headroom.min.js"></script>
<!-- blog CSS -->
<link href="/static/css/base.css" rel="stylesheet">
{% block css %}
{% endblock %}
<!--根据cookies判断是否启用暗色主题-->
</head>
<body>
<!--导航开始-->
<nav class="navbar navbar-expand-md bg-white fixed-top blog-navbar py-md-0">
<a class="navbar-brand d-md-none d-lg-block" id="site-logo-name" href="/">
<strong class="px-2">{{ web_site.title }}</strong>
</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent"
aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav ml-auto">
<li class="nav-item mr-2">
<a class="nav-link py-md-3 active" href="/"><i class="fa fa-home mr-1"></i>首页<span class="sr-only">(current)</span></a>
</li>
<li class="nav-item mr-2">
<a class="nav-link py-md-3 " href="./archive.html"><i class="fa fa-sitemap mr-1"></i>归档</a>
</li>
<li class="nav-item mr-2">
<a class="nav-link py-md-3 " href="./archive.html"><i class="fa fa-sitemap mr-1"></i>周永波个人网站</a>
</li>
<form class="nav-item navbar-form mr-2 py-md-2" role="search" method="get" id="searchform"
action="/search/">
<div class="input-group">
<input type="search" name="q" class="form-control rounded-0" placeholder="站内搜索" autocomplete="off"
required=True>
<div class="input-group-btn">
<button class="btn btn-info rounded-0" type="submit"><i class="fa fa-search"></i></button>
</div>
</div><!-- /input-group -->
</form>
</ul>
</div>
</nav>
<!--导航结束-->
<!--消息块-->
<!--回到顶部按钮-->
<div class="text-center" id="to-top">
<i class="fa fa-chevron-up" id="btn-top" title="回到顶部"></i>
</div>
<!--主要内容块-->
<main>
<div class="container">
<div class="row">
{% block content %}
{% endblock %}
<div class="col-lg-4">
<!--个人空间-->
<div class="card border-0 rounded-0 px-3 mb-2 mb-md-3 d-none d-lg-block" id="home-card">
<div class="card-header bg-white px-0">
<strong><i class="fa fa-paper-plane mr-2 f-17"></i>个人空间</strong>
</div>
<div class="card-body px-0 pt-3 pb-1">
<div class="row text-center">
<div class="col">
<a href="https://github.com/Hopetree" target="_blank" title="进入博主的Github查看博客源码">
<img style="max-width:40px" alt="博主的github"
src="https://tendcode.com/static/blog/img/github.png">
<p class="mt-2">Github</p>
</a>
</div>
<div class="col">
<a href="/timeline/" target="_blank" title="查看网站建站历程">
<img style="max-width:40px" alt="网站的建站历程"
src="https://tendcode.com/static/blog/img/blog.png">
<p class="mt-2">Timeline</p>
</a>
</div>
<div class="col">
<a href="/timeline/" target="_blank" title="查看网站建站历程">
<img style="max-width:40px" alt="网站的建站历程"
src="https://tendcode.com/static/blog/img/blog.png">
<p class="mt-2">Timeline</p>
</a>
</div>
</div>
</div>
</div>
<!--文章分类-->
<div class="card border-0 rounded-0 px-3 mb-2 mb-md-3" id="category-card">
<div class="card-header bg-white px-0">
<strong><i class="fa fa-book mr-2 f-17"></i>文章分类</strong>
</div>
<ul class="list-group list-group-flush f-16">
{% for category in categories %}
<li class="list-group-item d-flex justify-content-between align-items-center pr-2 py-2">
<a class="category-item" href="/category/{{ category.id }}"
title="查看【{{ category.name }}】分类下所有文章">{{ category.name }}</a>
<span class="badge text-center"
title="当前分类下有{{ category.article_set.count }}篇文章">{{ category.article_set.count }}</span>
</li>
{% endfor %}
</ul>
</div>
<!--标签云-->
<div class="card border-0 rounded-0 px-3 mb-2 mb-md-3" id="tag-card">
<div class="card-header bg-white px-0">
<strong><i class="fa fa-tags mr-2 f-17"></i>标 签 云</strong>
</div>
<div class="card-body px-0 py-3">
<div class="tag-cloud">
<a href="/tag/Virtualenv/" class="tags f-16" id="tag-1"
title="【Virtualenv】标签下有3篇文章">Virtualenv</a>
<a href="/tag/Web-development/" class="tags f-16" id="tag-2"
title="【后端开发】标签下有10篇文章">后端开发</a>
<a href="/tag/python-crawler/" class="tags f-16" id="tag-3"
title="【Python爬虫】标签下有8篇文章">Python爬虫</a>
<a href="/tag/MD5/" class="tags f-16" id="tag-4"
title="【MD5加密】标签下有2篇文章">MD5加密</a>
<a href="/tag/Requests/" class="tags f-16" id="tag-5"
title="【Requests】标签下有4篇文章">Requests</a>
<a href="/tag/threading/" class="tags f-16" id="tag-6"
title="【多线程】标签下有4篇文章">多线程</a>
<a href="/tag/multiprocessing/" class="tags f-16" id="tag-7"
title="【多进程】标签下有2篇文章">多进程</a>
<a href="/tag/Django/" class="tags f-16" id="tag-8"
title="【Django】标签下有10篇文章">Django</a>
<a href="/tag/MySQL/" class="tags f-16" id="tag-9"
title="【MySQL】标签下有4篇文章">MySQL</a>
<a href="/tag/database/" class="tags f-16" id="tag-10"
title="【数据库】标签下有2篇文章">数据库</a>
<a href="/tag/Nginx/" class="tags f-16" id="tag-11"
title="【Nginx】标签下有4篇文章">Nginx</a>
<a href="/tag/Gunicorn/" class="tags f-16" id="tag-12"
title="【Gunicorn】标签下有1篇文章">Gunicorn</a>
<a href="/tag/Redis/" class="tags f-16" id="tag-13"
title="【Redis】标签下有2篇文章">Redis</a>
<a href="/tag/django-redis/" class="tags f-16" id="tag-14"
title="【django-redis】标签下有1篇文章">django-redis</a>
<a href="/tag/cache/" class="tags f-16" id="tag-15"
title="【Cache】标签下有1篇文章">Cache</a>
<a href="/tag/Linux/" class="tags f-16" id="tag-16"
title="【Linux】标签下有8篇文章">Linux</a>
<a href="/tag/crontab/" class="tags f-16" id="tag-17"
title="【crontab】标签下有1篇文章">crontab</a>
<a href="/tag/PhantomJS/" class="tags f-16" id="tag-18"
title="【PhantomJS】标签下有1篇文章">PhantomJS</a>
<a href="/tag/selenium/" class="tags f-16" id="tag-19"
title="【Selenium】标签下有2篇文章">Selenium</a>
<a href="/tag/queue/" class="tags f-16" id="tag-20"
title="【Queue】标签下有1篇文章">Queue</a>
<a href="/tag/configparser/" class="tags f-16" id="tag-21"
title="【configparser】标签下有1篇文章">configparser</a>
<a href="/tag/paramiko/" class="tags f-16" id="tag-22"
title="【paramiko】标签下有1篇文章">paramiko</a>
<a href="/tag/SSH/" class="tags f-16" id="tag-23"
title="【SSH】标签下有3篇文章">SSH</a>
<a href="/tag/shell/" class="tags f-16" id="tag-24"
title="【shell】标签下有4篇文章">shell</a>
<a href="/tag/Scrapy/" class="tags f-16" id="tag-25"
title="【Scrapy】标签下有2篇文章">Scrapy</a>
<a href="/tag/docker/" class="tags f-16" id="tag-26"
title="【Docker】标签下有10篇文章">Docker</a>
<a href="/tag/docker-compose/" class="tags f-16" id="tag-27"
title="【docker-compose】标签下有5篇文章">docker-compose</a>
<a href="/tag/docker-build/" class="tags f-16" id="tag-28"
title="【容器化】标签下有8篇文章">容器化</a>
<a href="/tag/centos/" class="tags f-16" id="tag-29"
title="【CentOS】标签下有2篇文章">CentOS</a>
<a href="/tag/pip/" class="tags f-16" id="tag-30"
title="【pip】标签下有1篇文章">pip</a>
<a href="/tag/argparse/" class="tags f-16" id="tag-31"
title="【argparse】标签下有1篇文章">argparse</a>
<a href="/tag/click/" class="tags f-16" id="tag-32"
title="【Click】标签下有1篇文章">Click</a>
<a href="/tag/OAuth2/" class="tags f-16" id="tag-33"
title="【OAuth2.0】标签下有1篇文章">OAuth2.0</a>
<a href="/tag/django-allauth/" class="tags f-16" id="tag-34"
title="【django-allauth】标签下有1篇文章">django-allauth</a>
<a href="/tag/git/" class="tags f-16" id="tag-35"
title="【Git】标签下有2篇文章">Git</a>
<a href="/tag/ci-cd/" class="tags f-16" id="tag-36"
title="【CI/CD】标签下有6篇文章">CI/CD</a>
<a href="/tag/Jenkins/" class="tags f-16" id="tag-37"
title="【Jenkins】标签下有6篇文章">Jenkins</a>
<a href="/tag/Vue/" class="tags f-16" id="tag-38"
title="【Vue.js】标签下有3篇文章">Vue.js</a>
<a href="/tag/ansible/" class="tags f-16" id="tag-39"
title="【Ansible】标签下有1篇文章">Ansible</a>
<a href="/tag/jinja2/" class="tags f-16" id="tag-40"
title="【jinja2】标签下有1篇文章">jinja2</a>
<a href="/tag/yaml/" class="tags f-16" id="tag-41"
title="【YAML】标签下有1篇文章">YAML</a>
</div>
</div>
</div>
<!--友链-->
<div class="d-none d-lg-block">
<div class="card border-0 rounded-0 px-3 mb-2 mb-md-3" id="friends-card">
<div class="card-header bg-white px-0">
<strong><i class="fa fa-link mr-2 f-17"></i>友情链接</strong>
</div>
<div class="card-body px-0 py-3">
<div class="tool-list">
<div class="w-50 float-left text-center mb-2">
<div class="mx-2">
<a href="https://github.com/Hopetree/izone" title="izone 博客项目的源代码"
target="_blank">
博客源码</a>
</div>
</div>
<div class="w-50 float-left text-center mb-2">
<div class="mx-2">
<a href="https://frostming.com" title="一个基于 Flask 开发的博客" target="_blank">
Frost's Blog</a>
</div>
</div>
<div class="w-50 float-left text-center mb-2">
<div class="mx-2">
<a href="https://zmrenwu.com" title="Django 博客教程分享者" target="_blank">
追梦人物</a>
</div>
</div>
<div class="w-50 float-left text-center mb-2">
<div class="mx-2">
<a href="https://www.dusaiphoto.com/" title="Django 搭建的博客，分享博客教程"
target="_blank">
杜赛的个人网站</a>
</div>
</div>
<div class="w-50 float-left text-center mb-2">
<div class="mx-2">
<a href="https://www.jerrycoding.com/" title="Jerry 的个人博客" target="_blank">
Jerry Coding</a>
</div>
</div>
<div class="w-50 float-left text-center mb-2">
<div class="mx-2">
<a href="https://boywithacoin.cn/" title="Stray_Camel的个人技术博客" target="_blank">
Stray_Camel</a>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</main>
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.min.js"></script>
<!--js cookie 插件-->
<script src="/static/js/js.cookie.min.js?v=20191123.12"></script>
<script src="https://cdn.bootcss.com/popper.js/1.14.7/umd/popper.min.js"></script>
<script src="https://cdn.bootcss.com/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script>
{% block js %}
{% endblock %}
<script>
$(function () {
var myElement = document.querySelector(".blog-navbar");
var headroom = new Headroom(myElement);
headroom.init()
});
</script>
<script src="/static/js/base.js?v=20191123.0909890"></script>
<footer class="container-fluid mt-4 py-0">
<div class="card-body text-center px-0 f-14">
<p class="card-text mb-1">Copyright © <span id="year-info"></span>
Powered by Django.
</p>
</div>
</footer>
</body>
</html>