# 响应 - 更改状态码

你可能之前已经了解到，你可以设置默认的[响应状态码](../tutorial/response-status-code.md){.internal-link target=_blank}。

但在某些情况下，你需要返回一个不同于默认值的状态码。

## 使用场景

例如，假设你想默认返回一个HTTP状态码为“OK”`200`。

但如果数据不存在，你想创建它，并返回一个HTTP状态码为“CREATED”`201`。

但你仍然希望能够使用`response_model`过滤和转换你返回的数据。

对于这些情况，你可以使用一个`Response`参数。

## 使用 `Response` 参数

你可以在你的*路径操作函数*中声明一个`Response`类型的参数（就像你可以为cookies和头部做的那样）。

然后你可以在这个*临时*响应对象中设置`status_code`。

# Response - Cambiar Código de Estado { #response-change-status-code }

Probablemente leíste antes que puedes establecer un [Código de Estado de Response](../tutorial/response-status-code.md){.internal-link target=_blank} por defecto.

Pero en algunos casos necesitas devolver un código de estado diferente al predeterminado.

## Caso de uso { #use-case }

Por ejemplo, imagina que quieres devolver un código de estado HTTP de "OK" `200` por defecto.

    params=[
        pytest.param("tutorial001_py39"),
        pytest.param("tutorial001_py310", marks=needs_py310),
    ],
)
def get_module(request: pytest.FixtureRequest):
    module = importlib.import_module(f"docs_src.encoder.{request.param}")
    return module


@pytest.fixture(name="client")
def get_client(mod: ModuleType):
    client = TestClient(mod.app)
    return client


def test_put(client: TestClient, mod: ModuleType):

     * @param len the length of data to decode
     * @throws IOException if an I/O error occurs during decoding
     */
    public FileNotifyInformationImpl(final byte[] buffer, final int bufferIndex, final int len) throws IOException {
        decode(buffer, bufferIndex, len);
    }

    @Override
    public int decode(final byte[] buffer, int bufferIndex, final int len) throws SMBProtocolDecodingException {

## Converter qualquer dado para compatível com JSON { #convert-any-data-to-json-compatible }

Para converter qualquer dado para um formato compatível com JSON, leia a seção [Tutorial - Codificador Compatível com JSON](../tutorial/encoder.md){.internal-link target=_blank}.

## OpenAPI Metadata - Docs { #openapi-metadata-docs }

            assertEquals(0x01, response.getShareFlags(), "Should decode share flags");
            assertEquals(0x08, response.getCapabilities(), "Should decode capabilities");
            assertEquals(0x001F01FF, response.getMaximalAccess(), "Should decode maximal access");

func (tid TargetID) String() string {
	return tid.ID + ":" + tid.Name
}

// ToARN - converts to ARN.
func (tid TargetID) ToARN(region string) ARN {
	return ARN{TargetID: tid, region: region}
}

// MarshalJSON - encodes to JSON data.
func (tid TargetID) MarshalJSON() ([]byte, error) {
	return json.Marshal(tid.String())
}

// UnmarshalJSON - decodes JSON data.
func (tid *TargetID) UnmarshalJSON(data []byte) error {
	var s string

                enc = encoding;
            }

            try {
                url = URLDecoder.decode(url, enc);
            } catch (final Exception e) {
                // Failed to decode URL, using original URL as-is
                if (getLogger().isDebugEnabled()) {
                    getLogger().debug("Failed to decode URL with encoding {}: {}", enc, url, e);
                }
            }
        }

        // Reserved (1 byte)
        buffer[52] = 0x00;

        // Byte count (2 bytes)
        buffer[53] = 0x00;
        buffer[54] = 0x00;

        // Test decode
        int bytesDecoded = response.decode(buffer, 0);

        // Should decode at least the header
        assertTrue(bytesDecoded > 0);

        // Verify the command was decoded correctly

        final byte[] temp = new byte[28 + avPairsLength + 4];

        Encdec.enc_uint32le(0x00000101, temp, 0); // Header
        Encdec.enc_uint32le(0x00000000, temp, 4); // Reserved
        Encdec.enc_uint64le(nanos1601, temp, 8);
        System.arraycopy(clientChallenge, 0, temp, 16, 8);
        Encdec.enc_uint32le(0x00000000, temp, 24); // Unknown
        if (avPairs != null) {