使用fastapi的时候，swagger-ui.css 、swagger-ui-bundle.js、redoc.standalone.js 有时候无法加载（国内环境原因或者是局域网屏蔽），此时就需要自己用魔法下载好对应文件，然后替换到fastapi里面去。

fastapi里面依靠这2个函数实现docs和redoc：

from fastapi.openapi.docs import get_swagger_ui_html, get_redoc_html

fastapi里面官网给的解决办法：

https://github.com/tiangolo/fastapi/blob/ac93277d3b506f4076aee1af6ae5a86406f545c6/docs_src/custom_docs_ui/tutorial001.py#L4

实践起来就是，首先下载好这些文件：

其次复现出/docs路由和/redoc路由：

import os
import uvicorn
from fastapi import FastAPI
from starlette.middleware.cors import CORSMiddleware
from fastapi.staticfiles import StaticFiles
from fastapi.openapi.docs import get_swagger_ui_html, get_redoc_html

app = FastAPI(
    title='outpainting_captioning_upscaler',
    description='outpainting images, captioning images,upscaler images',
    version='1.0.0',
    docs_url=None,
    redoc_url=None,  # 设置 ReDoc 文档的路径

)
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)
app.mount("/static", StaticFiles(directory="static"), name="static")


@app.get("/docs", include_in_schema=False)
async def custom_swagger_ui_html():
    return get_swagger_ui_html(
        openapi_url="/openapi.json",
        title="xx",
        # oauth2_redirect_url=app.swagger_ui_oauth2_redirect_url,
        swagger_js_url='/static/swagger/swagger-ui-bundle.js',
        swagger_css_url='/static/swagger/swagger-ui.css',
        swagger_favicon_url='/static/swagger/img.png',
    )


@app.get("/redoc", include_in_schema=False)
async def redoc_html():
    return get_redoc_html(
        openapi_url=app.openapi_url,
        title=app.title + " - ReDoc",
        redoc_js_url="/static/swagger/redoc.standalone.js",
    )


# 写个测试接口
@app.get('/xx')
async def test():
    return {'message': 'test success'}


if __name__ == '__main__':
    uvicorn.run(f'{os.path.basename(__file__).split(".")[0]}:app',
                host='0.0.0.0',
                port=7777,
                reload=False,
                workers=1)

其中文件也可以去这里下载：

下载:https://wwsm.lanzouy.com/i682Q1frjnmd 密码:9zw2

成功：