title="title",
        swagger_js_url=swagger_js_url,
        swagger_css_url=swagger_css_url,
        swagger_favicon_url=swagger_favicon_url,
    )
    body_content = html.body.decode()
    assert swagger_js_url in body_content
    assert swagger_css_url in body_content
    assert swagger_favicon_url in body_content


def test_strings_in_generated_redoc():
    sig = inspect.signature(get_redoc_html)

async def custom_swagger_ui_html():
    return get_swagger_ui_html(
        openapi_url=app.openapi_url,
        title=app.title + " - Swagger UI",
        oauth2_redirect_url=app.swagger_ui_oauth2_redirect_url,
        swagger_js_url="https://unpkg.com/swagger-ui-dist@5.9.0/swagger-ui-bundle.js",
        swagger_css_url="https://unpkg.com/swagger-ui-dist@5.9.0/swagger-ui.css",
    )

async def custom_swagger_ui_html():
    return get_swagger_ui_html(
        openapi_url=app.openapi_url,
        title=app.title + " - Swagger UI",
        oauth2_redirect_url=app.swagger_ui_oauth2_redirect_url,
        swagger_js_url="/static/swagger-ui-bundle.js",
        swagger_css_url="/static/swagger-ui.css",
    )


@app.get(app.swagger_ui_oauth2_redirect_url, include_in_schema=False)
async def swagger_ui_redirect():

* `title`: the title of your API.
* `oauth2_redirect_url`: you can use `app.swagger_ui_oauth2_redirect_url` here to use the default.
* `swagger_js_url`: the URL where the HTML for your Swagger UI docs can get the **JavaScript** file. This is the custom CDN URL.
* `swagger_css_url`: the URL where the HTML for your Swagger UI docs can get the **CSS** file. This is the custom CDN URL.

* `title`: der Titel Ihrer API.
* `oauth2_redirect_url`: Sie können hier `app.swagger_ui_oauth2_redirect_url` verwenden, um die Standardeinstellung zu verwenden.
* `swagger_js_url`: die URL, unter welcher der HTML-Code für Ihre Swagger-UI-Dokumentation die **JavaScript**-Datei abrufen kann. Dies ist die benutzerdefinierte CDN-URL.

        ),
    ],
    title: Annotated[
        str,
        Doc(
            """
            The HTML `<title>` content, normally shown in the browser tab.
            """
        ),
    ],
    swagger_js_url: Annotated[
        str,
        Doc(
            """
            The URL to use to load the Swagger UI JavaScript.

            It is normally set to a CDN URL.
            """
        ),

导入 FastAPI 内部函数为文档创建 HTML 页面，并把所需参数传递给这些函数：

* `openapi_url`： API 文档获取 OpenAPI 概图的 HTML 页面，此处可使用 `app.openapi_url`
* `title`：API 的标题
* `oauth2_redirect_url`：此处使用 `app.swagger_ui_oauth2_redirect_url` 作为默认值
* `swagger_js_url`：Swagger UI 文档所需 **JavaScript** 文件的 URL，即为应用提供服务的文件
* `swagger_css_url`：Swagger UI 文档所需 **CSS** 文件的 URL，即为应用提供服务的文件

添加 ReDoc 文档的方式与此类似……

```Python hl_lines="2-6  14-22  25-27  30-36"