Zum Beispiel:

```Python
app.add_middleware(MiddlewareA)
app.add_middleware(MiddlewareB)
```

Dies führt zu folgender Ausführungsreihenfolge:

* **Request**: MiddlewareB → MiddlewareA → Route

* **Response**: Route → MiddlewareA → MiddlewareB

Dieses Stapelverhalten stellt sicher, dass Middlewares in einer vorhersehbaren und kontrollierbaren Reihenfolge ausgeführt werden.

## Andere Middlewares { #other-middlewares }

import okhttp3.Request;
import okhttp3.Response;

public final class Authenticate {
  private final OkHttpClient client;

  public Authenticate() {
    client = new OkHttpClient.Builder()
        .authenticator((route, response) -> {
          if (response.request().header("Authorization") != null) {
            return null; // Give up, we've already attempted to authenticate.
          }

                                "content": {"application/json": {"schema": {}}},
                            },
                        },
                        "summary": "Route With Extras",
                        "operationId": "route_with_extras__get",
                        "x-custom-extension": "value",
                    }
                },
            },
        }

    - topic_repos: ../en/data/topic_repos.yml
  redirects:
    redirect_maps:
      deployment/deta.md: deployment/cloud.md
      advanced/graphql.md: how-to/graphql.md
      advanced/custom-request-and-route.md: how-to/custom-request-and-route.md
      advanced/conditional-openapi.md: how-to/conditional-openapi.md
      advanced/extending-openapi.md: how-to/extending-openapi.md
      advanced/testing-database.md: how-to/testing-database.md

import requests

app = Flask(__name__)
@app.route('/', methods=['POST'])
def get_webhook():
	if request.method == 'POST':
		# obtain the request event from the 'POST' call
		event = request.json

		object_context = event["getObjectContext"]

		# Get the presigned URL to fetch the requested
		# original object from MinIO
		s3_url = object_context["inputS3Url"]

		# Extract the route and request token from the input context

{* ../../docs_src/dependencies/tutorial015_an_py310.py ln[10:15] hl[12:14] *}


## Включения кода с заголовком { #code-includes-with-title }

{* ../../docs_src/bigger_applications/app_an_py310/routers/users.py hl[1,3] title["app/routers/users.py"] *}

{* ../../docs_src/bigger_applications/app_an_py310/internal/admin.py hl[3] title["app/internal/admin.py"] *}

    /**
     * Sets whether to use robots.txt disallow rules.
     *
     * @param useRobotsTxtDisallows True to use disallow rules, false otherwise
     */
    public void setUseRobotsTxtDisallows(final boolean useRobotsTxtDisallows) {
        this.useRobotsTxtDisallows = useRobotsTxtDisallows;
    }

    /**
     * Sets whether to use robots.txt allow rules.
     *

## Funcionalidades { #features }

- **Explorador de Operações de Rota** - Uma visualização em árvore na barra lateral de todas as <dfn title="rotas, endpoints">*operações de rota*</dfn> da sua aplicação. Clique para ir diretamente a qualquer definição de rota ou de router.
- **Pesquisa de Rotas** - Pesquise por path, método ou nome com <kbd>Ctrl</kbd> + <kbd>Shift</kbd> + <kbd>E</kbd> (no macOS: <kbd>Cmd</kbd> + <kbd>Shift</kbd> + <kbd>E</kbd>).

                detail = {"errors": exc.errors(), "body": body.decode()}
                raise HTTPException(status_code=422, detail=detail)

        return custom_route_handler


app = FastAPI()
app.router.route_class = ValidationErrorLoggingRoute


@app.post("/")
async def sum_numbers(numbers: Annotated[list[int], Body()]):

# Guide de l'utilisateur avancé { #advanced-user-guide }

## Caractéristiques supplémentaires { #additional-features }

Le [Tutoriel - Guide de l'utilisateur](../tutorial/index.md) devrait suffire à vous faire découvrir toutes les fonctionnalités principales de **FastAPI**.

Dans les sections suivantes, vous verrez des options, configurations et fonctionnalités supplémentaires.

/// tip | Astuce