我正在尝试将一些写成CSS的ive链接到单页应用程序，但是当我通过CMDER运行它时，却总是出现404错误。
我的应用程式
webapp.py
静态文件夹
--index.html
--css --- theme.css
--images --- hudson1.jpg
范本
--newyork.html
127.0.0.1 - - [28/Nov/2016 10:08:10] "GET /%7B%7B%20url_for('static',%20filename='css/theme.css')%20%7D%7D HTTP/1.1" 404
这是我得到的错误。这是我的代码。
Index.html
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
$("#newyorkbutton").click(function(){
$.get("/newyork", function(data, status){
$("#city").html(data);
});
});
});
</script>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>A Blog ABout My Travels</title>
<link rel= "stylesheet" type= "text/css" href= "{{ url_for('static', filename='css/theme.css') }}">
</head>
<body>
<div id="mainPicture">
<div class="picture">
<div id="headerTitle">Places I've Been</div>
<div id="headerSubtext">A Blog About My Travels</div>
</div>
</div>
<div id="page">
<input type="submit" name="NewYork" id="newyorkbutton" value="New York">
</div>
<div id="city" class="contentBox">
<div class="innerBox">
<h2>Welcome to My Travels</h2>
<div class="contentText"><p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum..</p><br />
<p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum..</p></div>
</div>
</div>
</body>
</html>
这是我的newyork.html：
<!doctype html>
<head>
<title>New York</title>
<link rel="stylesheet" href="{{ url_for('static', filename='css/theme.css') }}">
</head>
<div class="innerBox">
<h2>New York</h2>
<div class="contentText"><p>
New York is a state in the northeastern United States, and is the 27th-most extensive, fourth-most populous, and seventh-most densely populated U.S. state. New York is bordered by New Jersey and Pennsylvania to the south and Connecticut, Massachusetts, and Vermont to the east. The state has a maritime border in the Atlantic Ocean with Rhode Island, east of Long Island, as well as an international border with the Canadian provinces of Quebec to the north and Ontario to the west and north.
</p>
<img src="{{ url_for('static', filename='images/newyork1.jpg') }}" alt="New York" style="width:750px;height:350px;">
<p>
The state of New York, with an estimated 19.8 million residents in 2015, is often referred to as New York State to distinguish it from New York City, the state's most populous city and its economic hub. With an estimated population of 8.55 million in 2015, New York City is the most populous city in the United States and the premier gateway for legal immigration to the United States. The New York City Metropolitan Area is one of the most populous urban agglomerations in the world. New York City is a global city, exerting a significant impact upon commerce, finance, media, art, fashion, research, technology, education, and entertainment, its fast pace defining the term New York minute.
</p></div>
</div>
而我的webapp.py：
from flask import Flask, render_template, request
app = Flask(__name__)
@app.route("/")
def root():
return app.send_static_file('index.html')
@app.route("/newyork")
def newyork():
return render_template('newyork.html')
if __name__ == "__main__":
app.run()
问题在于您是以index.html静态文件而不是以渲染模板的形式发送的。首先移动index.html从static文件夹中templates的文件夹，
然后，你应该改变
@app.route("/")
def root():
return app.send_static_file('index.html')
在webapp.py到：
@app.route("/")
def root():
return render_template('index.html')
它将起作用。
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