server.enqueue(
      MockResponse(
        code = 401,
        body = "{\"error\":{\"message\":\"No auth credentials found\",\"code\":401}}",
        headers = Headers.headersOf("content-type", "application/json"),
      ),
    )
    server.enqueue(
      MockResponse(
        body =
          """
          |data: hey
          |
          |
          """.trimMargin(),

You will learn more about adding extra information later in the docs, when learning to declare examples.

/// warning

Extra keys passed to `Field` will also be present in the resulting OpenAPI schema for your application.
As these keys may not necessarily be part of the OpenAPI specification, some OpenAPI tools, for example [the OpenAPI validator](https://validator.swagger.io/), may not work with your generated schema.

///

            checkPostMethod(requestBody, getItemEndpointSuffix());
        }
        refresh();

        // Download CSV
        Response response =
                given().contentType("application/json").header("Authorization", getTestToken()).when().get(getApiPath() + "/download");

        assertEquals(200, response.getStatusCode());
        String body = response.getBody().asString();

            checkPostMethod(requestBody, getItemEndpointSuffix());
        }
        refresh();

        // Download CSV
        Response response =
                given().contentType("application/json").header("Authorization", getTestToken()).when().get(getApiPath() + "/download");

        assertEquals(200, response.getStatusCode());
        String body = response.getBody().asString();

	data.Set("grant_type", "client_credentials")
	req, err := http.NewRequest(http.MethodPost, idpEndpoint, strings.NewReader(data.Encode()))
	if err != nil {
		return nil, err
	}
	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
	req.SetBasicAuth(clientID, clientSecret)
	t := &http.Transport{
		TLSClientConfig: &tls.Config{
			InsecureSkipVerify: true,
		},
	}
	hclient := http.Client{
		Transport: t,
	}

import java.util.Locale;
import java.util.Properties;

import org.apache.maven.jline.MessageUtils;
import org.apache.maven.utils.Os;
import org.slf4j.Logger;

/**
 * Utility class used to report errors, statistics, application version info, etc.
 *
 */
@Deprecated
public final class CLIReportingUtils {
    // CHECKSTYLE_OFF: MagicNumber
    public static final long MB = 1024 * 1024;

    private static final long ONE_SECOND = 1000L;

À la place, il prend les octets JSON générés avec Pydantic en utilisant le modèle de réponse (ou le type de retour) et renvoie directement une `Response` avec le type de média approprié pour JSON (`application/json`).

## Notes { #notes }

Lorsque vous renvoyez une `Response` directement, ses données ne sont pas validées, converties (sérialisées), ni documentées automatiquement.

如果你声明了一个[响应模型](../tutorial/response-model.md)，FastAPI 会使用 Pydantic 将数据序列化为 JSON。

如果你没有声明响应模型，FastAPI 会使用 [JSON 兼容编码器](../tutorial/encoder.md) 中解释的 `jsonable_encoder`，并把结果放进一个 `JSONResponse`。

如果你在 `response_class` 中声明了一个 JSON 媒体类型（`application/json`）的类（比如 `JSONResponse`），你返回的数据会使用你在 *路径操作装饰器* 中声明的任意 Pydantic `response_model` 自动转换（和过滤）。但数据不会由 Pydantic 序列化为 JSON 字节；而是先用 `jsonable_encoder` 转换后传给 `JSONResponse`，由它使用 Python 标准 JSON 库序列化为字节。

### JSON 性能 { #json-performance }

            @Override
            protected void doFile(HttpServletRequest req, HttpServletResponse resp, SmbFile file) throws IOException {
                // Mock implementation
                resp.setContentType("application/octet-stream");
                resp.setHeader("Content-Length", "100");
            }
        };

        networkExplorer.init(servletConfig);

        // Setup authentication

     <span style="background-color:#007166"><font color="#D3D7CF"> INFO </font></span>  Waiting for application startup.
     <span style="background-color:#007166"><font color="#D3D7CF"> INFO </font></span>  Application startup complete.
```

</div>

In der Konsolenausgabe sollte es eine Zeile geben, die ungefähr so aussieht:

```hl_lines="4"