Puedes ver los headers requeridos en la interfaz de documentación en `/docs`:

<div class="screenshot">
<img src="/img/tutorial/header-param-models/image01.png">
</div>

## Prohibir Headers Extra { #forbid-extra-headers }

En algunos casos de uso especiales (probablemente no muy comunes), podrías querer **restringir** los headers que deseas recibir.

你可以在 `/docs` 页面的 UI 中查看查询参数：

<div class="screenshot">
<img src="/img/tutorial/query-param-models/image01.png">
</div>

## 禁止额外的查询参数

在一些特殊的使用场景中（可能不是很常见），你可能希望**限制**你要接收的查询参数。

你可以使用 Pydantic 的模型配置来 `forbid`（意为禁止 —— 译者注）任何 `extra`（意为额外的 —— 译者注）字段：

{* ../../docs_src/query_param_models/tutorial002_an_py310.py hl[10] *}

假设有一个客户端尝试在**查询参数**中发送一些**额外的**数据，它将会收到一个**错误**响应。

例如，如果客户端尝试发送一个值为 `plumbus` 的 `tool` 查询参数，如：

   * objects come from factory methods that are themselves {@code @Nullable}. In reality neither the
   * array nor its contents can be null, but it is not useful to force the use of {@code
   * requireNonNull} or the like just to assert that.
   *
   * <p>{@code EqualsTester} will always check that every object it is given returns false from

 * strategies.
 *
 * <ul>
 *   <li>SafeAtomicHelper: uses Atomic FieldsUpdaters to implement synchronization
 *   <li>SynchronizedHelper: uses {@code synchronized} blocks for synchronization
 * </ul>
 *
 * To force selection of our fallback strategies we load {@link AggregateFutureState} (and all of
 * {@code com.google.common.util.concurrent}) in degenerate class loaders which make certain

<div class="screenshot">
<img src="/img/tutorial/header-param-models/image01.png">
</div>

## 禁止额外的 Headers

在某些特殊使用情况下（可能并不常见），您可能希望**限制**您想要接收的 headers。

您可以使用 Pydantic 的模型配置来禁止（ `forbid` ）任何额外（ `extra` ）字段：

{* ../../docs_src/header_param_models/tutorial002_an_py310.py hl[10] *}

如果客户尝试发送一些**额外的 headers**，他们将收到**错误**响应。

     *
     * @throws IllegalArgumentException If this is not a well-formed HTTP or HTTPS URL.
     */
    @JvmStatic
    @JvmName("get")
    fun String.toHttpUrl(): HttpUrl = Builder().parse(null, this).build()

    /**
     * Returns a new `HttpUrl` representing `url` if it is a well-formed HTTP or HTTPS URL, or null
     * if it isn't.
     */
    @JvmStatic
    @JvmName("parse")

    <dependency>
      <groupId>org.apache.maven.resolver</groupId>
      <artifactId>maven-resolver-transport-file</artifactId>
    </dependency>
    <!-- HTTP/1.1, lowest priority, Java8+ (still must as some ITs force it) -->
    <dependency>
      <groupId>org.apache.maven.resolver</groupId>
      <artifactId>maven-resolver-transport-wagon</artifactId>
    </dependency>
    <!-- HTTP/1.1, medium priority, Java8+ -->
    <dependency>

    CipherSuite.TLS_AES_128_CCM_SHA256,
    CipherSuite.TLS_AES_128_CCM_8_SHA256,
  )

/**
 * A TLS 1.3 only Connection Spec. This will be eventually be exposed
 * as part of MODERN_TLS or folded into the default OkHttp client once published and
 * available in JDK11 or Conscrypt.
 */
private val TLS_13 =
  ConnectionSpec
    .Builder(true)
    .cipherSuites(*TLS13_CIPHER_SUITES.toTypedArray())

 *       typically because the type forbids nullable type arguments: For example, {@code
 *       ImmutableList.get} returns {@code E}, but that value is never {@code null}. (Accordingly,
 *       {@code ImmutableList} is declared to forbid {@code ImmutableList<@Nullable String>}.)
 *   <li>methods whose return type is a type variable but which can return {@code null} regardless
 *       of the type argument supplied by the user of the class: For example, {@code

 *       typically because the type forbids nullable type arguments: For example, {@code
 *       ImmutableList.get} returns {@code E}, but that value is never {@code null}. (Accordingly,
 *       {@code ImmutableList} is declared to forbid {@code ImmutableList<@Nullable String>}.)
 *   <li>methods whose return type is a type variable but which can return {@code null} regardless
 *       of the type argument supplied by the user of the class: For example, {@code