这时可以用 `alias` 参数声明一个别名，FastAPI 会用该别名在 URL 中查找参数值：

{* ../../docs_src/query_params_str_validations/tutorial009_an_py310.py hl[9] *}

## 弃用参数 { #deprecating-parameters }

现在假设你不再喜欢这个参数了。

由于还有客户端在使用它，你不得不保留一段时间，但你希望文档清楚地将其展示为<dfn title="已过时，不推荐使用">已弃用</dfn>。

那么将参数 `deprecated=True` 传给 `Query`：

{* ../../docs_src/query_params_str_validations/tutorial010_an_py310.py hl[19] *}

文档将会像下面这样展示它：

        ) from None


def generate_operation_id_for_path(
    *, name: str, path: str, method: str
) -> str:  # pragma: nocover
    warnings.warn(
        message="fastapi.utils.generate_operation_id_for_path() was deprecated, "
        "it is not used internally, and will be removed soon",
        category=FastAPIDeprecationWarning,
        stacklevel=2,
    )
    operation_id = f"{name}{path}"

 */
package org.apache.maven.artifact;

/**
 * Type safe reincarnation of Artifact scope. Also supplies the {@code DEFAULT_SCOPE} as well
 * as convenience method to deal with scope relationships.
 *
 *
 */
@Deprecated
public enum ArtifactScopeEnum {
    compile(1),
    test(2),
    runtime(3),
    provided(4),
    system(5),
    runtime_plus_system(6);

    public static final ArtifactScopeEnum DEFAULT_SCOPE = compile;

import org.apache.maven.repository.legacy.metadata.MetadataResolutionRequest;
import org.apache.maven.repository.legacy.metadata.ResolutionGroup;

@Named
@Singleton
@Deprecated
public class TestMetadataSource implements ArtifactMetadataSource {
    @Inject
    private ArtifactFactory factory;

    @Override
    public ResolutionGroup retrieve(

    StreamingResponse,
    UJSONResponse,
)
```

## FastAPI Responses

There were a couple of custom FastAPI response classes that were intended to optimize JSON performance.

However, they are now deprecated as you will now get better performance by using a [Response Model - Return Type](https://fastapi.tiangolo.com/tutorial/response-model/).

	NATSQueueLimit        = "queue_limit"
	NATSCertAuthority     = "cert_authority"
	NATSClientCert        = "client_cert"
	NATSClientKey         = "client_key"

	// Streaming constants - deprecated
	NATSStreaming                   = "streaming"
	NATSStreamingClusterID          = "streaming_cluster_id"
	NATSStreamingAsync              = "streaming_async"
	NATSStreamingMaxPubAcksInFlight = "streaming_max_pub_acks_in_flight"

) {
  @JvmName("-deprecated_keyManager")
  @Deprecated(
    message = "moved to val",
    replaceWith = ReplaceWith(expression = "keyManager"),
    level = DeprecationLevel.ERROR,
  )
  fun keyManager(): X509KeyManager = keyManager

  @JvmName("-deprecated_trustManager")
  @Deprecated(
    message = "moved to val",
    replaceWith = ReplaceWith(expression = "trustManager"),

 * properties.
 * <p>
 * Read <a href="../../../authhandler.html">jCIFS Exceptions and
 * NtlmAuthenticator</a> for related information.
 *
 * @deprecated use {@link NtlmPasswordAuthenticator} instead
 */
@Deprecated
public class NtlmPasswordAuthentication extends NtlmPasswordAuthenticator {

    /**
     *
     */
    private static final long serialVersionUID = -2832037191318016836L;

import java.util.List;
import java.util.Map;
import java.util.Set;

import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.repository.ArtifactRepository;

/**
 * ResolutionGroup
 */
@Deprecated
public class ResolutionGroup {

    private final Set<Artifact> artifacts;

    private final List<ArtifactRepository> resolutionRepositories;

    private final Artifact pomArtifact;

import org.apache.maven.artifact.versioning.DefaultArtifactVersion;
import org.apache.maven.artifact.versioning.InvalidVersionSpecificationException;
import org.apache.maven.artifact.versioning.VersionRange;

/**
 *
 */
@Deprecated(since = "4.0.0")
public final class RequirementMatcherFactory {
    private RequirementMatcherFactory() {}

    public static RequirementMatcher createExactMatcher(String provideValue) {