Quando a requisição contém dados inválidos, **FastAPI** internamente lança para o `RequestValidationError`.

E também inclui um manipulador de exceções padrão para ele.

Para sobrescrevê-lo, importe o `RequestValidationError` e use-o com o `@app.exception_handler(RequestValidationError)` para decorar o manipulador de exceções.

O manipulador de exceções receberá um `Request` e a exceção.

* **Aucun compromis** avec les bases de données, les frontends, etc. Mais une intégration facile avec tous.

### « Plug-ins » illimités { #unlimited-plug-ins }

Ou, autrement dit, pas besoin d'eux, importez et utilisez le code dont vous avez besoin.

    }

    private void throwDockerRequiredException(final String message, Exception e) {
        throw new GradleException(
            message + "\nyou can address this by attending to the reported issue, or removing the offending tasks from being executed.",
            e
        );
    }

    /**
     * Runs a command and captures the exit code, standard output and standard error.
     *

<img src="/img/tutorial/security/image02.png">

/// note | Remarque

Peu importe ce que vous saisissez dans le formulaire, cela ne fonctionnera pas encore. Mais nous y viendrons.

///

## Informations de Développement

### Récupérer le Code Source

1. Clonez le dépôt Fess :
    ```
    $ cd ~/workspace
    $ git clone https://github.com/codelibs/fess.git
    ```
    
2. Importez le dépôt cloné en tant que projet [Maven](https://maven.apache.org/) sur [Eclipse](https://www.eclipse.org/eclipseide/) ou un autre IDE.

### Configuration pour les Plugins OpenSearch

 *
 * <p>The one downside of {@code Stopwatch} relative to {@link System#nanoTime()} is that {@code
 * Stopwatch} requires object allocation and additional method calls, which can reduce the accuracy
 * of the elapsed times reported. {@code Stopwatch} is still suitable for logging and metrics where
 * reasonably accurate values are sufficient. If the uncommon case that you need to maximize
 * accuracy, use {@code System.nanoTime()} directly instead.
 *

### Crie uma classe `Enum` { #create-an-enum-class }

Importe `Enum` e crie uma subclasse que herde de `str` e de `Enum`.

Ao herdar de `str`, a documentação da API saberá que os valores devem ser do tipo `string` e poderá renderizá-los corretamente.

	// Replication latency information
	Latency ReplicationLatency `json:"replicationLatency"`
	// bandwidth limit for target
	BandWidthLimitInBytesPerSecond int64 `json:"limitInBits"`
	// current bandwidth reported
	CurrentBandwidthInBytesPerSecond float64 `json:"currentBandwidth"`
	// transfer rate for large uploads
	XferRateLrg *XferStats `json:"-" msg:"lt"`
	// transfer rate for small uploads

///

## Exécuter le programme serveur { #run-the-server-program }

Si vous avez installé un serveur ASGI manuellement, vous devrez normalement passer une chaîne d'import dans un format spécial pour qu'il importe votre application FastAPI :

<div class="termy">

```console
$ uvicorn main:app --host 0.0.0.0 --port 80

<span style="color: green;">INFO</span>:     Uvicorn running on http://0.0.0.0:80 (Press CTRL+C to quit)

    * Old behavior:
      * environment variables explicitly whitelisted via --docker-env-metadata-whitelist were exported as `container_env_*=*`. Default is zero so by default non were exported
      * all docker labels were exported as `container_label_*=*`
    * New behavior:
      * Only `container_name`, `pod_name`, `namespace`, `id`, `image`, and `name` labels are exposed