Question

我正在尝试使用以下命令从模板（index.html）文件中引用静态文件。

{{ url_for('static', filename='test.css') }}

但是，我收到以下500错误：

127.0.0.1 - - [13/May/2018 21:34:49] "GET / HTTP/1.1" 200 -
[2018-05-13 21:34:49,603] ERROR in app: Exception on /static/test.css [GET]
Traceback (most recent call last):
  File "/Users/username/folder/flask/app.py", line 2292, in wsgi_app
    response = self.full_dispatch_request()
  File "/Users/username/folder/flask/app.py", line 1815, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/Users/username/folder/flask/app.py", line 1718, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/Users/username/folder/flask/app.py", line 1813, in full_dispatch_request
    rv = self.dispatch_request()
  File "/Users/username/folder/flask/app.py", line 1799, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/Users/username/folder/flask/helpers.py", line 976, in send_static_file
    cache_timeout=cache_timeout)
  File "/Users/username/folder/flask/helpers.py", line 713, in send_from_directory
    return send_file(filename, **options)
  File "/Users/username/folder/flask/helpers.py", line 628, in send_file
    complete_length=fsize)
  File "/Users/username/anaconda/lib/python2.7/site-packages/werkzeug/wrappers.py", line 1604, in make_conditional
    accept_ranges = _clean_accept_ranges(accept_ranges)
  File "/Users/username/anaconda/lib/python2.7/site-packages/werkzeug/wrappers.py", line 96, in _clean_accept_ranges
    raise ValueError("Invalid accept_ranges value")
ValueError: Invalid accept_ranges value
127.0.0.1 - - [13/May/2018 21:34:49] "GET /static/test.css HTTP/1.1" 500 -

很奇怪，Flask会找到并发送模板文件，但它会导致静态文件出错。我怀疑Flask可以访问CSS文件，但拒绝发送它。我的怀疑是基于我尝试移动或重命名CSS文件时收到404错误。这是我的文件夹结构：

|-- web
    |-- static
        |-- test.css
    |-- templates
        |-- index.html

更新＃1 以下是HTML头的内部：

<head>
  <link rel="stylesheet" type="text/css" href="{{ url_for('static', filename='test.css') }}">
  <title>Title</title>
</head>

Answer 1

为方便起见，请使用<link type="text/css" rel="stylesheet" href="/static/test.css">

Answer 2

我想我已经确定了错误。我正在尝试使项目可移植，因此无法安装Flask的用户可以使用它。因此，我从项目中的目录中包含并加载“flask”。

将目录重命名为“flask_2”并再次运行程序后，它在我通过pip安装的烧瓶上运行完全正常。

Flask静态文件返回500错误

2 个答案: