在浏览器预览html的文件的时候，发现样式css，js啥的都能够运行找得到
<!--{% load static%}-->
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<!-- <link rel="stylesheet" href="{% static '../static/plugins/bootstrap-3.4.1/css/bootstrap.css' %}">-->
<link rel="stylesheet" href='../static/plugins/bootstrap-3.4.1/css/bootstrap.css'>
<style>
.navbar{
border-radius:0;
}
</style>
</head>
<body>
<nav class="navbar navbar-default">
<div class="container-fluid">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#">联通用户管理系统</a>
</div>
<!-- Collect the nav links, forms, and other content for toggling -->
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav">
<li><a href="#">Link</a></li>
</ul>
<ul class="nav navbar-nav navbar-right">
<li><a href="#">Link</a></li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Dropdown <span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="#">Action</a></li>
<li><a href="#">Another action</a></li>
<li><a href="#">Something else here</a></li>
<li role="separator" class="divider"></li>
<li><a href="#">Separated link</a></li>
</ul>
</li>
</ul>
</div><!-- /.navbar-collapse -->
</div><!-- /.container-fluid -->
</nav>
<script src='../static/js/jquery-3.6.1.min.js'></script>
<script src='../static/plugins/bootstrap-3.4.1/js/bootstrap.min.js'></script>
</body>
</html>但是启动djano打开页面的时候，就发现服务器找不到css，js了
页面展示也很差
解决办法：
在html那里加入：
新增--------------> {% load static%}
添加--------------> <link rel="stylesheet" href="{% static '../static/plugins/bootstrap-3.4.1/css/bootstrap.css' %}">