## Установка пользовательских обработчиков исключений

Вы можете добавить пользовательские обработчики исключений с помощью <a href="https://www.starlette.io/exceptions/" class="external-link" target="_blank">то же самое исключение - утилиты от Starlette</a>.

Допустим, у вас есть пользовательское исключение `UnicornException`, которое вы (или используемая вами библиотека) можете `вызвать`.

        } else {
            setupFieldDescsByClass(beanClass);
        }
    }

    /**
     * Prepares the fields defined in the interface.
     *
     * @param interfaceClass
     *            the target interface
     */
    protected void setupFieldDescsByInterface(final Class<?> interfaceClass) {
        addFieldDescs(interfaceClass);
        final Class<?>[] interfaces = interfaceClass.getInterfaces();

Aber schauen wir uns zunächst einmal diese grundlegenden **konzeptionellen Ideen** an. Diese Konzepte gelten auch für jede andere Art von Web-API. 💡

## Sicherheit – HTTPS

Im [vorherigen Kapitel über HTTPS](https.md){.internal-link target=_blank} haben wir erfahren, wie HTTPS Verschlüsselung für Ihre API bereitstellt.

                }
            }
        }

        return itemList;
    }

    /**
     * Matches the request locale with the target locale.
     *
     * @param requestLocale The request locale.
     * @param targetLocale The target locale.
     * @return True if the locales match, otherwise false.
     */
    protected boolean matchLocale(final Locale requestLocale, final Locale targetLocale) {

	</properties>
	<build>
		<plugins>
			<plugin>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>3.14.0</version>
				<configuration>
					<source>17</source>
					<target>17</target>
					<encoding>UTF-8</encoding>
				</configuration>
			</plugin>
			<plugin>
				<artifactId>maven-javadoc-plugin</artifactId>
				<version>3.11.2</version>
				<configuration>

    }

    // Helper: reflectively set private/protected field on an object
    private static void setField(Object target, Class<?> declaring, String name, Object value) {
        try {
            Field f = declaring.getDeclaredField(name);
            f.setAccessible(true);
            f.set(target, value);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

If you have an older version, you would get errors when trying to use `Annotated`.

Make sure you [Upgrade the FastAPI version](../../deployment/versions.md#upgrading-the-fastapi-versions){.internal-link target=_blank} to at least 0.95.1 before using `Annotated`.

///

### Import `Depends` { #import-depends }

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

## Instalar manejadores de excepciones personalizados

Puedes agregar manejadores de excepciones personalizados con <a href="https://www.starlette.io/exceptions/" class="external-link" target="_blank">las mismas utilidades de excepciones de Starlette</a>.

Supongamos que tienes una excepción personalizada `UnicornException` que tú (o un paquete que usas) podría lanzar.

## Instalando manipuladores de exceções customizados

Você pode adicionar manipuladores de exceção customizados com <a href="https://www.starlette.io/exceptions/" class="external-link" target="_blank">a mesma seção de utilidade de exceções presentes no Starlette</a>

Digamos que você tenha uma exceção customizada `UnicornException` que você (ou uma biblioteca que você use) precise lançar (`raise`).

included in the OpenAPI schema (the API docs), because FastAPI doesn't have a way to know beforehand what you are going to return.

But you can document that in your code, using: [Additional Responses](additional-responses.md){.internal-link target=_blank}....