尝试在页面中加载歌曲时出现 GET 404 错误

Question

我正在 Python + Flask 框架上开发音乐流媒体平台。 起初我只有主 python 文件，但后来我决定将它放在单独的文件中 - routes.py、forms.py、models.py 和应用程序 function 的启动。 在分离之前它工作正常，但之后我无法加载音乐文件。 上面写着"GET /uploads/7sq8ul0lyVyvq6jvyAYDS659d.mp3 HTTP/1.1" ，7sq8ul0lyVyvq6jvyAYDS659d 是歌曲的名称。 奇怪的是它找到了目录中的所有文件，但无法加载它们。

运行.py：

from app import app
from app import db
import logging 

if __name__ == "__main__":
    db.create_all()
    app.secret_key='shhhtitssecret'
    app.run(debug=True)

./app/routes.py 中歌曲的路线

#route for every song
@app.route('/uploads/<filename>')
def uploaded_file(filename):
    return send_from_directory(app.config['UPLOAD_FOLDER'], filename)

#route for songs page
@app.route('/songs', methods=['GET', 'POST'])
def songs():
    q = request.args.get('q')
    
    if q:
        records = song.query.all()
        songs = []
        
        for s in records:
            name = fuzz.token_sort_ratio(q, s.name)
            artist = fuzz.token_sort_ratio(q, s.artist_name)
            genre = fuzz.token_sort_ratio(q, s.genre)
            
            if name > 60 or artist > 60 or genre > 60:
                if s not in songs: 
                    songs.append(s)

    else:
        songs = song.query.all()
        random.shuffle(songs)
        songs = songs[:20]
 
    return render_template('songs.html', songs = songs)

当我尝试循环播放歌曲时，问题出现在歌曲中。html。 我为每首歌得到这个：

INFO:werkzeug:127.0.0.1 - - [21/Apr/2021 21:35:09] "GET /uploads/QA7ppkblARwFWhdNQKFP6An30.mp3 HTTP/1.1" 404 -
INFO:werkzeug:127.0.0.1 - - [21/Apr/2021 21:35:09] "GET /uploads/CkCO0jydi5b2Ukzu5EZkjoF4o.mp3 HTTP/1.1" 404 -
INFO:werkzeug:127.0.0.1 - - [21/Apr/2021 21:35:09] "GET /uploads/Z8yW8HwDVgx0KhgIUhQtoibCg.mp3 HTTP/1.1" 404 -
INFO:werkzeug:127.0.0.1 - - [21/Apr/2021 21:35:09] "GET /uploads/JdD9hx53tTLcVQEsIsK23wWKK.mp3 HTTP/1.1" 404 -
INFO:werkzeug:127.0.0.1 - - [21/Apr/2021 21:35:09] "GET /uploads/CRIbJEi4R7gJv0F2x5GPJAFQq.mp3 HTTP/1.1" 404 -
INFO:werkzeug:127.0.0.1 - - [21/Apr/2021 21:35:09] "GET /uploads/pRvwLiT2zwlGcARia5z2SzObn.mp3 HTTP/1.1" 404 -
INFO:werkzeug:127.0.0.1 - - [21/Apr/2021 21:35:09] "GET /uploads/5DmAQCd7OpFs1BdWdGFkGWOn3.mp3 HTTP/1.1" 404 -
INFO:werkzeug:127.0.0.1 - - [21/Apr/2021 21:35:09] "GET /uploads/vYmKpSyTKAYTIHn1NKZv2D3aN.mp3 HTTP/1.1" 404 -
INFO:werkzeug:127.0.0.1 - - [21/Apr/2021 21:35:09] "GET /uploads/NFCkKcWUXJ6IhhPzLbJqWRiQ6.mp3 HTTP/1.1" 404 -
INFO:werkzeug:127.0.0.1 - - [21/Apr/2021 21:35:09] "GET /uploads/UyhmPY8BGhDqZZKQ89QXJASLO.mp3 HTTP/1.1" 404 -
INFO:werkzeug:127.0.0.1 - - [21/Apr/2021 21:35:09] "GET /uploads/7sq8ul0lyVyvq6jvyAYDS659d.mp3 HTTP/1.1" 404 -
INFO:werkzeug:127.0.0.1 - - [21/Apr/2021 21:35:09] "GET /uploads/ErgCAofnyjAK3FD82JqQfFEQz.mp3 HTTP/1.1" 404 -
INFO:werkzeug:127.0.0.1 - - [21/Apr/2021 21:35:09] "GET /uploads/RMzaZbdpFjwE7APqHL76cqO3S.mp3 HTTP/1.1" 404 -
INFO:werkzeug:127.0.0.1 - - [21/Apr/2021 21:35:09] "GET /uploads/kGWzfYbIQM5lyg97RhfGWi6mY.mp3 HTTP/1.1" 404 -
INFO:werkzeug:127.0.0.1 - - [21/Apr/2021 21:35:09] "GET /uploads/JqHGRuJMlQQPLs9zdgCJc8dtE.mp3 HTTP/1.1" 404 -
INFO:werkzeug:127.0.0.1 - - [21/Apr/2021 21:35:09] "GET /uploads/3Il9kce2Jbl7pnyJNQMHaEVqx.mp3 HTTP/1.1" 404 -
INFO:werkzeug:127.0.0.1 - - [21/Apr/2021 21:35:09] "GET /uploads/MSZWvpgVPKhaBCb7RL0Fx8Ayq.mp3 HTTP/1.1" 404 -
INFO:werkzeug:127.0.0.1 - - [21/Apr/2021 21:35:09] "GET /uploads/Na6ET7hwzb1QzCJ3swFn0In4Y.mp3 HTTP/1.1" 404 -
INFO:werkzeug:127.0.0.1 - - [21/Apr/2021 21:35:09] "GET /uploads/QA7ppkblARwFWhdNQKFP6An30.mp3 HTTP/1.1" 404 -