FastAPI 未加载 static 个文件

Question

So, I'm swapping my project from node.js to python FastAPI. Everything has been working fine with node, but here it says that my static files are not present, so here's the code:

from fastapi import FastAPI, Request, WebSocket
from fastapi.responses import HTMLResponse
from fastapi.staticfiles import StaticFiles
from fastapi.templating import Jinja2Templates

app = FastAPI()

app.mount("/static", StaticFiles(directory="../static"), name="static")
templates = Jinja2Templates(directory='../templates')

@app.get('/')
async def index_loader(request: Request):
    return templates.TemplateResponse('index.html', {"request": request})

The project's structure looks like this:

Files clearly are where they should be, but when I connect to website the following error is raised:

←[32mINFO←[0m:     connection closed
←[32mINFO←[0m:     127.0.0.1:54295 - "←[1mGET /img/separator.png HTTP/1.1←[0m" ←[31m404 Not Found←[0m
←[32mINFO←[0m:     127.0.0.1:54296 - "←[1mGET /css/rajdhani.css HTTP/1.1←[0m" ←[31m404 Not Found←[0m
←[32mINFO←[0m:     127.0.0.1:54295 - "←[1mGET /js/pixi.min.js HTTP/1.1←[0m" ←[31m404 Not Found←[0m
←[32mINFO←[0m:     127.0.0.1:54296 - "←[1mGET /js/ease.js HTTP/1.1←[0m" ←[31m404 Not Found←[0m
←[32mINFO←[0m:     127.0.0.1:54298 - "←[1mGET / HTTP/1.1←[0m" ←[32m200 OK←[0m
←[32mINFO←[0m:     127.0.0.1:54298 - "←[1mGET /img/separator.png HTTP/1.1←[0m" ←[31m404 Not Found←[0m
←[32mINFO←[0m:     127.0.0.1:54299 - "←[1mGET /css/rajdhani.css HTTP/1.1←[0m" ←[31m404 Not Found←[0m
←[32mINFO←[0m:     127.0.0.1:54298 - "←[1mGET /js/pixi.min.js HTTP/1.1←[0m" ←[31m404 Not Found←[0m
←[32mINFO←[0m:     127.0.0.1:54299 - "←[1mGET /js/ease.js HTTP/1.1←[0m" ←[31m404 Not Found←[0m

So, basically, any static file that I'm using is missing, and I have no idea what am I doing wrong. How to fix it?

Answer 1

Here:

app.mount("/static", StaticFiles(directory="../static"), name="static")

You mount your static directory under /static path. That means, if you want access static files in your html you need to use static prefix, eg <img src="static/img/separator.png"/>

Answer 2

To link to static files from within your HTML (Jinja2) template, you can use the following example code, as described in Starlette documentation :

<link href="{{ url_for('static', path='/css/rajdhani.css') }}" rel="stylesheet">

Answer 3

folder = os.path.dirname(__file__)
app.mount("/static", StaticFiles(directory=folder+"/../static",html=True), name="static")

works. Somehow using directory="../static" does not work, the full path is required when pointing outside of your FastAPI project. Then html=True is also needed for serving html files correctly. See https://www.starlette.io/staticfiles/ .