我正在尝试将与Flask一起提供的一些静态后端内容的CSS模板链接到我的React前端。
这是我的结构：
client/
src/
components/
menu.jsx
public/
index.html
web/
project/
api/
routes/
templates/
menu.html
loading.html
static/
css/
bootstrap.css
mug.css
在我的第一次尝试中，我试图像这样链接静态内容：
index.html
DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<link rel="stylesheet" type="text/css" href="{{url_for('static', filename='css/bootstrap.css')}}">
<link rel="stylesheet" type="text/css" href="{{url_for('static', filename='css/mug.css')}}">
<title>My App</title>
</head>
<body>
<div id="root">
</div>
</body>
</html>
以上操作无效。
我知道，如果我将所有CSS都放入“客户端/公共”中，则bootstrap.css可以工作，但是mug.css不能工作，因为当'menu.jsx '通过'dangerouslysetHTML'将我的后端模板整体呈现，如下所示：
menu.jsx
render(){
var menu_html = this.state.menu_template;
var menu_template = { __html: menu_html };
return (
<div id="parent">
<h1 className="title is-1"><font color="#C86428">Menu</font></h1>
<hr/><br/>
<div dangerouslySetInnerHTML={menu_template}/>
</div>
);
}
等等：
menus.html
<a href="{{ url_for('loading') }}</a>
等等：
loading.html
<div class="cup">
<div class="coffee"></div>
</div>
<div class="smoke"></div>
<p class="txt">Brewing...<br><small></small></p>
最后：
mug.css
@import url(https://fonts.googleapis.com/css?family=Josefin+Sans:100,400);
body {
background:rgb(223,189,150);
font-family: 'Josefin Sans', sans-serif;
text-align:center;
}
.cup {
width:76px;
height:76px;
background:#dedede;
border-radius:50%;
position:absolute;
left:50%;
margin-left:-38px;
top:100px;
box-shadow:-4px -1px 0 rgba(0,0,0,0.2);
}
.cup:after{
content:"";
width:66px;
height:66px;
position:absolute;
border-radius:50%;
background:linear-gradient(-45deg, #cbcbcb, #f2f2f2 );
left:50%;
margin-left:-33px;
top:5px;
}
.coffee{
width:47px;
height:47px;
background:#613317;
/*background-image: linear-gradient(15deg, transparent 0px, transparent 29px, rgba(255,255,255,0.05) 29px, rgba(255,255,255,0.05) 47px);*/
border-radius:50%;
position:absolute;
left:50%;
margin-left:-25px;
z-index:1;
top:50%;
margin-top:-26px;
border:3px solid #e9e9e9;
box-shadow:-3px 2px 0 rgba(0,0,0,0.1);
transform:rotate(30deg);
transition:transform 0.3s;
}
.coffee:after{ /*assa*/
content:"";
width:15px;
height:8px;
position:absolute;
left:-19px;
top:18px;
background:linear-gradient(90deg, #d6d6d6, #aeaeae);
box-shadow:0px 2px 0 rgba(0,0,0,0.2);
}
.coffee:before {
content:"";
width:47px;
height:47px;
background-image: radial-gradient(75% 59%, ellipse, rgba(255,255,255,0.2), transparent 95%), radial-gradient(5% 9%, ellipse, rgba(255,255,255,0.1), transparent 5%), radial-gradient(0% 0%, ellipse, rgba(255,255,255,0.3), transparent 55%);
background-image: -webkit-radial-gradient(75% 59%, ellipse, rgba(255,255,255,0.2), transparent 95%), -webkit-radial-gradient(5% 9%, ellipse, rgba(255,255,255,0.1), transparent 5%), -webkit-radial-gradient(0% 0%, ellipse, rgba(255,255,255,0.3), transparent 55%);
background-image: -moz-radial-gradient(75% 59%, ellipse, rgba(255,255,255,0.2), transparent 95%), -moz-radial-gradient(5% 9%, ellipse, rgba(255,255,255,0.1), transparent 5%), -moz-radial-gradient(0% 0%, ellipse, rgba(255,255,255,0.3), transparent 55%);
position:absolute;
left:0;
border-radius:50%;
}
.cup:hover .coffee {
transform:rotate(15deg);
}
.smoke {
width:70px;
height:100px;
background:;
position:absolute;
left:50%;
margin-left:-40px;
top:43px;
background-image: -webkit-radial-gradient(75% 59%, ellipse, rgba(255,255,255,0.2), transparent 25%), -webkit-radial-gradient(25% 70%, ellipse, rgba(255,255,255,0.2), transparent 15%), -webkit-radial-gradient(35% 61%, ellipse, rgba(255,255,255,0.2), transparent 10%), -webkit-radial-gradient(55% 35%, ellipse, rgba(255,255,255,0.2), transparent 15%);
background-image: -moz-radial-gradient(75% 59%, ellipse, rgba(255,255,255,0.2), transparent 25%), -moz-radial-gradient(25% 70%, ellipse, rgba(255,255,255,0.2), transparent 15%), -moz-radial-gradient(35% 61%, ellipse, rgba(255,255,255,0.2), transparent 10%), -moz-radial-gradient(55% 35%, ellipse, rgba(255,255,255,0.2), transparent 15%);
background-image: radial-gradient(75% 59%, ellipse, rgba(255,255,255,0.2), transparent 25%), radial-gradient(25% 70%, ellipse, rgba(255,255,255,0.2), transparent 15%), radial-gradient(35% 61%, ellipse, rgba(255,255,255,0.2), transparent 10%), radial-gradient(55% 35%, ellipse, rgba(255,255,255,0.2), transparent 15%);
animation:bk 11s infinite ;
}
.smoke:after {
content:"";
width:100px;
height:100px;
background:;
position:absolute;
background-image: -webkit-radial-gradient(75% 59%, ellipse, rgba(255,255,255,0.2), transparent 25%), -webkit-radial-gradient(25% 70%, ellipse, rgba(255,255,255,0.2), transparent 15%), -webkit-radial-gradient(35% 61%, ellipse, rgba(255,255,255,0.2), transparent 10%);
background-image: -moz-radial-gradient(75% 59%, ellipse, rgba(255,255,255,0.2), transparent 25%), -moz-radial-gradient(25% 70%, ellipse, rgba(255,255,255,0.2), transparent 15%), -moz-radial-gradient(35% 61%, ellipse, rgba(255,255,255,0.2), transparent 10%);
background-image: radial-gradient(75% 59%, ellipse, rgba(255,255,255,0.2), transparent 25%), radial-gradient(25% 70%, ellipse, rgba(255,255,255,0.2), transparent 15%), radial-gradient(35% 61%, ellipse, rgba(255,255,255,0.2), transparent 10%);
animation:bk 2s 1s infinite;
}
@keyframes bk {
0%{ background-position:0 0; opacity:0; }
15%, 85% { opacity:1;}
100%{ background-position:-20px -25px, -5px -25px, 0px -25px, 0px -25px; opacity:0;}
}
.txt{
position:absolute;
top:184px;
width:150px;
left:50%;
margin-left:-75px;
}
.txt a{
text-decoration:none;
color:#613317;
}
.txt a:hover {
text-decoration:underline;
}
问题：
那么，如何将此后端CSS链接到前端index.html，否则如何将其应用？
答案 0 :(得分：0)
我不知道（更像是我不认为），有一种方法可以使用正常的Jinja模板将Flask与react直接链接。如果要使用像ReactJS这样的前端框架，则必须使用两个完全独立的系统。
处理此问题的最佳方法通常是使用API。
使用要生成的API端点创建后端。这可以通过Flask Restful完成。 API端点基本上将以JSON格式生成数据。
API端点可由前端React JS使用。我没有相应的链接，但是我敢肯定有很多在线资源。
现在，如果您需要在ReactJS端更改特定的CSS项，则可以发送特定的标志来指示需要更改的内容，并且可以处理逻辑。例如，您可以使用以下字段从后端生成端点：
{
"user-team": "blue"
}
在ReactJS上，可以进行逻辑检查该特定字段并基于该字段更改特定元素的颜色。