N'utilisez base64 que si vous devez absolument inclure des données binaires dans du JSON et que vous ne pouvez pas utiliser des fichiers pour cela.

## Pydantic `bytes` { #pydantic-bytes }

# Dependency Injection

Use dependencies when:

* They can't be declared in Pydantic validation and require additional logic
* The logic depends on external resources or could block in any other way
* Other dependencies need their results (it's a sub-dependency)
* The logic can be shared by multiple endpoints to do things like error early, authentication, etc.
* They need to handle cleanup (e.g., DB sessions, file handles), using dependencies with `yield`

   *       AbstractPackageSanityTests} doesn't know how to construct, the test will fail.
   *   <li>If there is no visible constructor or visible static factory method declared by {@code
   *       C}, {@code C} is skipped for serialization test, even if it implements {@link
   *       Serializable}.
   *   <li>Serialization test is not performed on method return values unless the method is a

## `Cookie` importieren { #import-cookie }

Importieren Sie zuerst `Cookie`:

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

## `Cookie`-Parameter deklarieren { #declare-cookie-parameters }

Deklarieren Sie dann die Cookie-Parameter mit derselben Struktur wie bei `Path` und `Query`.

Sie können den Defaultwert sowie alle zusätzlichen Validierungen oder Annotierungsparameter definieren:

## Імпорт `Cookie` { #import-cookie }

Спочатку імпортуйте `Cookie`:

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

## Визначення параметрів `Cookie` { #declare-cookie-parameters }

Потім визначте параметри кукі, використовуючи таку ж конструкцію як для `Path` і `Query`.

Ви можете визначити значення за замовчуванням, а також усі додаткові параметри валідації чи анотації:

        assertTrue(c.isInterface(), "SpnegoConstants must be an interface");
        assertEquals(4, c.getDeclaredFields().length, "Unexpected number of fields");
        assertEquals(0, c.getDeclaredMethods().length, "No declared methods expected");
        assertEquals(0, c.getDeclaredConstructors().length, "Interfaces have no constructors");
    }

    @Test
    @DisplayName("Fields are public static final Strings with expected values")

首先，从 Pydantic 中导入 `Field`：

{* ../../docs_src/body_fields/tutorial001_an_py310.py hl[4] *}

/// warning | 警告

注意，与从 `fastapi` 导入 `Query`，`Path`、`Body` 不同，要直接从 `pydantic` 导入 `Field` 。

///

## 声明模型属性 { #declare-model-attributes }

然后，使用 `Field` 定义模型的属性：

{* ../../docs_src/body_fields/tutorial001_an_py310.py hl[11:14] *}

`Field` 的工作方式和 `Query`、`Path`、`Body` 相同，参数也相同。

/// note | 技术细节

          <version>1.0.0+</version>
          <type>String</type>
          <required>true</required>
          <description>
            The name of the parameter, to be used while configuring this parameter from the Mojo's declared defaults
            or from the POM.
          </description>
        </field>
        <field>
          <name>alias</name>
          <version>1.0.0+</version>
          <type>String</type>

import com.google.common.base.Function;
import java.util.concurrent.Executor;
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.
 */

  private static WildcardType canonicalizeWildcardType(
      TypeVariable<?> declaration, WildcardType type) {
    Type[] declared = declaration.getBounds();
    List<Type> upperBounds = new ArrayList<>();
    for (Type bound : type.getUpperBounds()) {
      if (!any(declared).isSubtypeOf(bound)) {
        upperBounds.add(canonicalizeWildcardsInType(bound));
      }
    }