```Python
q: str | None = None
```

Zum Beispiel:

{* ../../docs_src/body_multiple_params/tutorial004_an_py310.py hl[27] *}

/// info

`Body` hat die gleichen zusätzlichen Validierungs- und Metadaten-Parameter wie `Query` und `Path` und andere, die Sie später kennenlernen.

///

## Einen einzelnen Body-Parameter einbetten

```

Por ejemplo:

{* ../../docs_src/body_multiple_params/tutorial004_an_py310.py hl[28] *}

/// info | Información

`Body` también tiene todos los mismos parámetros de validación y metadatos extras que `Query`, `Path` y otros que verás luego.

///

## Embeber un solo parámetro de cuerpo

Supongamos que solo tienes un único parámetro de cuerpo `item` de un modelo Pydantic `Item`.

     *
     * @param data the data buffer to write
     * @param offset the offset in the data buffer
     * @param length the number of bytes to write
     */
    public void setData(final byte[] data, final int offset, final int length) {
        this.data = data;
        this.dataOffset = offset;
        this.dataLength = length;
    }

    /**

{* ../../docs_src/path_params_numeric_validations/tutorial001_py310.py hl[1] *}

## Declare metadados

Você pode declarar todos os parâmetros da mesma maneira que na `Query`.

Por exemplo para declarar um valor de metadado `title` para o parâmetro de rota `item_id` você pode digitar:

{* ../../docs_src/path_params_numeric_validations/tutorial001_py310.py hl[8] *}

/// note | Nota

 * abused as a cache (i.e. for storing values that can be re-calculated) to avoid memory exhaustion.
 * <p>
 * <strong>Note:</strong> Actual implementations must be thread-safe.
 *
 * @see Session#getData()
 * @since 4.0.0
 */
@Experimental
@ThreadSafe
@Provider
public interface SessionData {

    /**
     * Associates the specified session data with the given key.
     *

        if (isNotModified(responseData)) {
            final UrlQueue<?> urlQueue = CrawlingParameterUtil.getUrlQueue();
            final ResultData resultData = new ResultData();
            resultData.setData(new byte[0]);
            resultData.setEncoding(Constants.UTF_8);
            resultData.setTransformerName(Constants.NO_TRANSFORMER);
            processResult(urlQueue, responseData, resultData);

Ihre API sendet fast immer einen **Response**body. Aber Clients senden nicht unbedingt immer **Request**bodys (sondern nur Metadaten).

Um einen **Request**body zu deklarieren, verwenden Sie <a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic</a>-Modelle mit allen deren Fähigkeiten und Vorzügen.

/// info

     */
    public static Map<String, Object> getDataMap(final AccessResultData<?> accessResultData) {
        // create input source
        final InputSource is = new InputSource(new ByteArrayInputStream(accessResultData.getData()));
        if (StringUtil.isNotBlank(accessResultData.getEncoding())) {
            is.setEncoding(accessResultData.getEncoding());
        }

        // create handler

            return abbreviateSite("\\\\" + value.replace('/', '\\'));
        }

        return getSite(url, encoding);
    }

    @Override
    public Object getData(final AccessResultData<?> accessResultData) {
        final byte[] data = accessResultData.getData();
        if (data != null) {
            try {
                return dataSerializer.fromBinaryToObject(data);
            } catch (final Exception e) {

            final int length = msg.getLength() - raxr.getDataLength();
            update(data, index, length - SmbConstants.SIGNATURE_OFFSET - 8);
            update(raxr.getData(), raxr.getOffset(), raxr.getDataLength());
        } else {
            update(data, index, msg.getLength() - SmbConstants.SIGNATURE_OFFSET - 8);
        }
        final byte[] signature = digest();