你可以用與定義 `Query` 與 `Path` 參數相同的方式定義 Cookie 參數。

## 匯入 `Cookie` { #import-cookie }

先匯入 `Cookie`：

{* ../../docs_src/cookie_params/tutorial001_an_py310.py hl[3] *}

## 宣告 `Cookie` 參數 { #declare-cookie-parameters }

然後用與 `Path`、`Query` 相同的結構宣告 `Cookie` 參數。

你可以設定預設值，以及所有額外的驗證或註解參數：

{* ../../docs_src/cookie_params/tutorial001_an_py310.py hl[9] *}

/// note | 技術細節

     * supports version ranges and updates the given {@code parent} instance to match the returned {@code ModelSource}.
     * If {@code parent} declares a version range, the version corresponding to the returned {@code ModelSource} will
     * be set on the given {@code parent}.
     * </p>
     *
     * @param parent The parent coordinates to resolve, must not be {@code null}.

Normalmente são usados para declarar permissões de segurança específicas, por exemplo:

* `users:read` ou `users:write` são exemplos comuns.
* `instagram_basic` é usado pelo Facebook e Instagram.
* `https://www.googleapis.com/auth/drive` é usado pelo Google.

/// info | Informação

No OAuth2, um "scope" é apenas uma string que declara uma permissão específica necessária.

/// note | Nota

Esto es compatible desde la versión `0.115.0` de FastAPI. 🤓

///

## Parámetros de Header con un Modelo Pydantic { #header-parameters-with-a-pydantic-model }

Declara los **parámetros de header** que necesitas en un **modelo Pydantic**, y luego declara el parámetro como `Header`:

   * Throwable}. But we <i>can</i> write {@code sneakyThrow(t);}.
   *
   * <p>We sometimes also use {@code sneakyThrow} for testing how our code responds to
   * sneaky checked exception.
   *
   * @return never; this method declares a return type of {@link Error} only so that callers can
   *     write {@code throw sneakyThrow(t);} to convince the compiler that the statement will always
   *     throw.
   */
  @CanIgnoreReturnValue

        assertViolations(result31, 0, 0, 3);

        assertContains(
                result31.getWarnings().get(0),
                "'dependencies.dependency.scope' for test:a:jar declares usage of deprecated 'system' scope");
        assertContains(
                result31.getWarnings().get(1),

 */
@GwtCompatible
abstract class CommonPattern {
  public abstract CommonMatcher matcher(CharSequence t);

  public abstract String pattern();

  public abstract int flags();

  // Re-declare this as abstract to force subclasses to override.
  @Override
  public abstract String toString();

  public static CommonPattern compile(String pattern) {
    return Platform.compilePattern(pattern);
  }

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.J2ktIncompatible;
import org.jspecify.annotations.Nullable;

/**
 * Hidden superclass of {@link FluentFuture} that provides us a place to declare special GWT
 * versions of the {@link FluentFuture#catching(Class, com.google.common.base.Function)
 * FluentFuture.catching} family of methods. Those versions have slightly different signatures.
 */
@GwtCompatible

   * Throwable}. But we <i>can</i> write {@code sneakyThrow(t);}.
   *
   * <p>We sometimes also use {@code sneakyThrow} for testing how our code responds to
   * sneaky checked exception.
   *
   * @return never; this method declares a return type of {@link Error} only so that callers can
   *     write {@code throw sneakyThrow(t);} to convince the compiler that the statement will always
   *     throw.
   */
  @CanIgnoreReturnValue

   * Throwable}. But we <i>can</i> write {@code sneakyThrow(t);}.
   *
   * <p>We sometimes also use {@code sneakyThrow} for testing how our code responds to
   * sneaky checked exception.
   *
   * @return never; this method declares a return type of {@link Error} only so that callers can
   *     write {@code throw sneakyThrow(t);} to convince the compiler that the statement will always
   *     throw.
   */
  @CanIgnoreReturnValue