* context class loader will find resources from the class path. In environments where different
   * threads can have different class loaders, for example app servers, the context class loader
   * will typically have been set to an appropriate loader for the current thread.
   *
   * <p>In the unusual case where the context class loader is null, the class loader that loaded

```Python hl_lines="11  14-16"
{!../../docs_src/sub_applications/tutorial001.py!}
```

### Monte a sub-aplicação

Na sua aplicação de nível superior, `app`, monte a sub-aplicação, `subapi`.

Neste caso, ela será montada no caminho `/subapi`:

```Python hl_lines="11  19"
{!../../docs_src/sub_applications/tutorial001.py!}
```

Se houver alguma tarefa em segundo plano (documentada posteriormente), ela será executada *depois* de todo o middleware.

///

## Criar um middleware

Para criar um middleware, use o decorador `@app.middleware("http")` logo acima de uma função.

A função middleware recebe:

* A `request`.
* Uma função `call_next` que receberá o `request` como um parâmetro.

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.app.web.base.login;

import static org.codelibs.core.stream.StreamUtil.stream;

import java.util.HashSet;
import java.util.Set;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

Und Sie möchten diese Exception global mit FastAPI handhaben.

Sie könnten einen benutzerdefinierten Exceptionhandler mittels `@app.exception_handler()` hinzufügen:

```Python hl_lines="5-7  13-18  24"
{!../../docs_src/handling_errors/tutorial003.py!}
```

Wenn Sie nun `/unicorns/yolo` anfragen, `raise`d die *Pfadoperation* eine `UnicornException`.

from fastapi.testclient import TestClient

from ...utils import needs_py39


@pytest.fixture(name="client")
def get_client():
    from docs_src.bigger_applications.app_an_py39.main import app

    client = TestClient(app)
    return client


@needs_py39
def test_users_token_jessica(client: TestClient):
    response = client.get("/users?token=jessica")
    assert response.status_code == 200

```Python hl_lines="11  14-16"
{!../../docs_src/sub_applications/tutorial001.py!}
```

### اتصال زیر برنامه

در برنامه سطح بالا `app` اتصال زیر برنامه `subapi` در این نمونه `/subapi` در مسیر قرار میدهد و میشود:

```Python hl_lines="11  19"
{!../../docs_src/sub_applications/tutorial001.py!}
```

### اسناد API خودکار را بررسی کنید

* `description`: Die Beschreibung Ihrer API. Dies kann Markdown enthalten und wird in der Dokumentation angezeigt.
* `routes`: Eine Liste von Routen, dies sind alle registrierten *Pfadoperationen*. Sie stammen von `app.routes`.

/// info

Der Parameter `summary` ist in OpenAPI 3.1.0 und höher verfügbar und wird von FastAPI 0.99.0 und höher unterstützt.

///

## Überschreiben der Standardeinstellungen

 * limitations under the License.
 *
 */
package okhttp3.android

import android.content.Context
import android.net.ConnectivityManager
import android.os.Build
import androidx.test.platform.app.InstrumentationRegistry
import assertk.assertThat
import assertk.assertions.hasMessage
import assertk.assertions.isEmpty
import assertk.assertions.isEqualTo
import assertk.assertions.isNotEmpty

* `description`: The description of your API, this can include markdown and will be shown in the docs.
* `routes`: A list of routes, these are each of the registered *path operations*. They are taken from `app.routes`.

/// info

The parameter `summary` is available in OpenAPI 3.1.0 and above, supported by FastAPI 0.99.0 and above.

///

## Overriding the defaults