おそらくコードの中で直接使用する必要はないでしょう。

しかし、高度なシナリオのために必要な場合には、カスタムヘッダーを追加することができます:

{* ../../docs_src/handling_errors/tutorial002.py hl[14] *}

## カスタム例外ハンドラのインストール

カスタム例外ハンドラは<a href="https://www.starlette.dev/exceptions/" class="external-link" target="_blank">Starletteと同じ例外ユーティリティ</a>を使用して追加することができます。

あなた（または使用しているライブラリ）が`raise`するかもしれないカスタム例外`UnicornException`があるとしましょう。

そして、この例外をFastAPIでグローバルに処理したいと思います。

 *       the {@code Converter} type using a mocking framework.
 *   <li>Pass two lambda expressions or method references to the {@link #from from} factory method.
 *   <li>Extend this class and implement its {@link #doForward} and {@link #doBackward} methods.
 * </ul>
 *
 * <p>Using a converter:
 *
 * <ul>
 *   <li>Convert one instance in the "forward" direction using {@code converter.convert(a)}.

</li>

<li>
<code>R0.UXTB</code>
<br>
<code>R0.UXTB&lt;&lt;imm</code>:
<code>UXTB</code>: extract an 8-bit value from the low-order bits of <code>R0</code> and zero-extend it to the size of <code>R0</code>.
<code>R0.UXTB&lt;&lt;imm</code>: left shift the result of <code>R0.UXTB</code> by <code>imm</code> bits.
The <code>imm</code> value can be 0, 1, 2, 3, or 4.

    Failure in SSL library, usually a protocol error
        error:14077410:SSL routines:SSL23_GET_SERVER_HELLO:sslv3 alert handshake
        failure (external/openssl/ssl/s23_clnt.c:770 0x7f2728a53ea0:0x00000000)
    at com.android.org.conscrypt.NativeCrypto.SSL_do_handshake(Native Method)
```

You can check a web server's configuration using [Qualys SSL Labs][qualys]. OkHttp's TLS

* 데이터 변환
* 데이터 검증
* 자동 문서화

## 특별한 타입과 검증

`str`, `int`, `float` 등과 같은 단일 타입과는 별개로, `str`을 상속하는 더 복잡한 단일 타입을 사용할 수 있습니다.

모든 옵션을 보려면, <a href="https://docs.pydantic.dev/latest/concepts/types/" class="external-link" target="_blank">Pydantic's exotic types</a> 문서를 확인하세요. 다음 장에서 몇가지 예제를 볼 수 있습니다.

예를 들어 `Image` 모델 안에 `url` 필드를 `str` 대신 Pydantic의 `HttpUrl`로 선언할 수 있습니다:

{* ../../docs_src/body_nested_models/tutorial005.py hl[4,10] *}

    scheme == other.scheme

internal fun EventListener.asFactory() = EventListener.Factory { this }

/**
 * Reads until this is exhausted or the deadline has been reached. This is careful to not extend the
 * deadline if one exists already.
 */
@Throws(IOException::class)
internal fun Source.skipAll(
  duration: Int,
  timeUnit: TimeUnit,
): Boolean {
  val nowNs = System.nanoTime()

{{- if eq .Values.service.type "LoadBalancer" }} MinIO can be accessed via port {{ .Values.service.port }} on an external IP address. Get the service external IP address by: kubectl get svc --namespace {{ .Release.Namespace }} -l app={{ template "minio.fullname" . }} Note that the public IP may take a couple of minutes to be available. You can now access MinIO server on http://<External-IP>:9000. Follow the below steps to connect to MinIO server with mc client: 1. Download the MinIO mc client - h...

{{- if eq .Values.service.type "LoadBalancer" }} Minio can be accessed via port {{ .Values.service.port }} on an external IP address. Get the service external IP address by: kubectl get svc --namespace {{ .Release.Namespace }} -l app={{ template "minio.fullname" . }} Note that the public IP may take a couple of minutes to be available. You can now access Minio server on http://<External-IP>:9000. Follow the below steps to connect to Minio server with mc client: 1. Download the Minio mc client - h...

If you have a different use case that needs to exit early from a dependency with `yield`, please create a <a href="https://github.com/fastapi/fastapi/discussions/new?category=questions" class="external-link" target="_blank">GitHub Discussion Question</a> with your specific use case and why you would benefit from having early closing for dependencies with `yield`.

* 数据转换
* 数据校验
* 自动生成文档

## 特殊的类型和校验

除了普通的单一值类型（如 `str`、`int`、`float` 等）外，你还可以使用从 `str` 继承的更复杂的单一值类型。

要了解所有的可用选项，请查看关于 <a href="https://docs.pydantic.dev/latest/concepts/types/" class="external-link" target="_blank">来自 Pydantic 的外部类型</a> 的文档。你将在下一章节中看到一些示例。

例如，在 `Image` 模型中我们有一个 `url` 字段，我们可以把它声明为 Pydantic 的 `HttpUrl`，而不是 `str`：

{* ../../docs_src/body_nested_models/tutorial005_py310.py hl[2,8] *}