# 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`。

package gradlebuild.identity.extension

import com.google.gson.Gson
import gradlebuild.identity.model.ReleasedVersions
import org.gradle.api.file.RegularFile
import org.gradle.util.GradleVersion
import org.gradle.util.internal.VersionNumber


class ReleasedVersionsDetails(currentBaseVersion: GradleVersion, releasedVersionsFile: RegularFile) {
    val allPreviousVersions: List<GradleVersion>
    val mostRecentRelease: GradleVersion

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"context"
	"sync"

	"github.com/minio/madmin-go/v3"
	"github.com/minio/minio/internal/pubsub"
)

const bootstrapTraceLimit = 4 << 10

type bootstrapTracer struct {
	mu   sync.RWMutex
	info []madmin.TraceInfo
}

var globalBootstrapTracer = &bootstrapTracer{}

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.internal.impl;

import java.util.Optional;

import org.apache.maven.api.Event;
import org.apache.maven.api.EventType;
import org.apache.maven.api.MojoExecution;
import org.apache.maven.api.Project;

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.repository.internal;

import javax.inject.Named;
import javax.inject.Singleton;

import org.eclipse.aether.RepositorySystemSession;
import org.eclipse.aether.deployment.DeployRequest;
import org.eclipse.aether.impl.MetadataGenerator;

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.repository.internal;

import javax.inject.Named;
import javax.inject.Singleton;

import org.eclipse.aether.RepositorySystemSession;
import org.eclipse.aether.deployment.DeployRequest;
import org.eclipse.aether.impl.MetadataGenerator;

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.repository.internal;

import javax.inject.Named;
import javax.inject.Singleton;

import org.eclipse.aether.RepositorySystemSession;
import org.eclipse.aether.deployment.DeployRequest;
import org.eclipse.aether.impl.MetadataGenerator;

    protected boolean isInternal(CtClass c) {
        if (c.name.startsWith("java.")) {
            return false
        } else if (c.name.contains('.internal.')) {
            return true
        } else {
            return !publicApiPatterns.any { it.matcher(c.name).find() }
        }
    }

 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

package okhttp3.internal.http

// HTTP Status Codes not offered by HttpUrlConnection.
//
// https://datatracker.ietf.org/doc/html/rfc7231#page-47
//

 * 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 okhttp3.internal.platform.android

import javax.net.ssl.SSLSocket
import okhttp3.Protocol

/**
 * Deferred implementation of SocketAdapter that works by observing the socket
 * and initializing on first use.
 *