静态文件
Sanic在使用app.static()方法注册时会提供静态文件和目录，例如图像文件。该方法采用端点URL和文件名。然后可以通过给定的端点访问指定的文件
from sanic import Sanic
from sanic.blueprints import Blueprint
app = Sanic(__name__)
# Serves files from the static folder to the URL /static
app.static('/static', './static')
# use url_for to build the url, name defaults to 'static' and can be ignored
app.url_for('static', filename='file.txt') == '/static/file.txt'
app.url_for('static', name='static', filename='file.txt') == '/static/file.txt'
# Serves the file /home/ubuntu/test.png when the URL /the_best.png
# is requested
app.static('/the_best.png', '/home/ubuntu/test.png', name='best_png')
# you can use url_for to build the static file url
# you can ignore name and filename parameters if you don't define it
app.url_for('static', name='best_png') == '/the_best.png'
app.url_for('static', name='best_png', filename='any') == '/the_best.png'
# you need define the name for other static files
app.static('/another.png', '/home/ubuntu/another.png', name='another')
app.url_for('static', name='another') == '/another.png'
app.url_for('static', name='another', filename='any') == '/another.png'
# also, you can use static for blueprint
bp = Blueprint('bp', url_prefix='/bp')
bp.static('/static', './static')
# specify a different content_type for your files
# such as adding 'charset'
app.static('/', '/public/index.html', content_type="text/html; charset=utf-8")
# servers the file directly
bp.static('/the_best.png', '/home/ubuntu/test.png', name='best_png')
app.blueprint(bp)
app.url_for('static', name='bp.static', filename='file.txt') == '/bp/static/file.txt'
app.url_for('static', name='bp.best_png') == '/bp/test_best.png'
app.run(host="0.0.0.0", port=8000)
注意：为静态目录提供服务时，Sanic不提供目录索引。
虚拟主机
app.static()方法还支持虚拟主机。您可以通过host参数将静态文件与特定的虚拟主机一起使用。例如：
from sanic import Sanic
app = Sanic(__name__)
app.static('/static', './static')
app.static('/example_static', './example_static', host='www.example.com')
流大文件
在某些情况下，您可以使用Sanic服务器处理大文件（例如，视频，图像等）。您可以选择使用流式传输文件，而不是直接下载。
from sanic import Sanic
app = Sanic(__name__)
app.static('/large_video.mp4', '/home/ubuntu/large_video.mp4', stream_large_files=True)
当stream_large_files为True时，Sanic将使用file_stream()而不是file()来提供静态文件。这将使用1KB作为默认块大小。而且，如果需要，您还可以使用自定义块大小。例如：
from sanic import Sanic
app = Sanic(__name__)
chunk_size = 1024 * 1024 * 8 # Set chunk size to 8KB
app.static('/large_video.mp4', '/home/ubuntu/large_video.mp4', stream_large_files=chunk_size)