from fastapi import FastAPI
from fastapi.responses import FileResponse
from pydantic import BaseModel


class Item(BaseModel):
    id: str
    value: str


app = FastAPI()


@app.get(
    "/items/{item_id}",
    response_model=Item,
    responses={
        200: {
            "content": {"image/png": {}},
            "description": "Return the JSON item or an image.",
        }
    },
)

import org.codelibs.fess.app.web.api.admin.FessApiAdminAction;
import org.codelibs.fess.opensearch.config.exentity.KeyMatch;
import org.lastaflute.web.Execute;
import org.lastaflute.web.response.JsonResponse;

import jakarta.annotation.Resource;

/**
 * API action for admin key match management.
 *
 */
public class ApiAdminKeymatchAction extends FessApiAdminAction {

# Tareas en Segundo Plano { #background-tasks }

Puedes definir tareas en segundo plano para que se ejecuten *después* de devolver un response.

Esto es útil para operaciones que necesitan ocurrir después de un request, pero para las que el cliente realmente no necesita esperar a que la operación termine antes de recibir el response.

Esto incluye, por ejemplo:

* Notificaciones por email enviadas después de realizar una acción:

	public synthetic fun <init> (Lokhttp3/logging/HttpLoggingInterceptor$Logger;Lkotlin/jvm/internal/DefaultConstructorMarker;)V
	public fun cacheConditionalHit (Lokhttp3/Call;Lokhttp3/Response;)V
	public fun cacheHit (Lokhttp3/Call;Lokhttp3/Response;)V
	public fun cacheMiss (Lokhttp3/Call;)V
	public fun callEnd (Lokhttp3/Call;)V
	public fun callFailed (Lokhttp3/Call;Ljava/io/IOException;)V
	public fun callStart (Lokhttp3/Call;)V

    //

    // GET /api/admin/general
    /**
     * Returns the current general system settings.
     * Excludes sensitive information like LDAP security credentials from the response.
     *
     * @return JSON response containing the general settings configuration
     */
    @Execute
    public JsonResponse<ApiResult> get$index() {
        final EditBody form = new EditBody();

        }
    }

    @Nested
    @DisplayName("Response Tests")
    class ResponseTests {

        @Test
        @DisplayName("Should return null response by default")
        void testGetResponse() {
            assertNull(testMessage.getResponse());
        }

        @Test
        @DisplayName("Should accept response setting")
        void testSetResponse() {

        final RefreshResponse response = searchEngineClient.admin().indices().prepareRefresh(index).execute().actionGet();
        if (logger.isDebugEnabled()) {
            logger.debug("[{}] refresh status: {} ({}/{}/{})", index, response.getStatus(), response.getTotalShards(),
                    response.getSuccessfulShards(), response.getFailedShards());
        }
        return response.getStatus().getStatus();
    }

    val request =
      HttpRequest
        .newBuilder(server.url("/").toUri())
        .header("Accept", "text/plain")
        .build()

    val response = httpClient.send(request, BodyHandlers.ofString())
    assertThat(response.statusCode()).isEqualTo(200)
    assertThat(response.body()).isEqualTo("hello, Java HTTP Client")

    val recorded = server.takeRequest()
    assertThat(recorded.headers["Accept"]).isEqualTo("text/plain")

```java
OkHttpClient client = new OkHttpClient();

String run(String url) throws IOException {
  Request request = new Request.Builder()
      .url(url)
      .build();

  try (Response response = client.newCall(request).execute()) {
    return response.body().string();
  }
}
```


Post to a Server
----------------

This program posts data to a service. [Full source][post_example].

```java

import jcifs.internal.TreeConnectResponse;
import jcifs.internal.smb2.ServerMessageBlock2;
import jcifs.internal.smb2.ServerMessageBlock2Response;
import jcifs.internal.util.SMBUtil;

/**
 * SMB2 Tree Connect response message.
 *
 * This response contains information about the connected
 * tree, including share type and capabilities.
 *
 * @author mbechler
 */