Responsemodell deklarieren, verwendet FastAPI den `jsonable_encoder`, wie in [JSON-kompatibler Encoder](../tutorial/encoder.md) erklärt, und packt das Ergebnis in eine `JSONResponse`.

Wenn Sie eine `response_class` mit einem JSON-Medientyp (`application/json`) deklarieren, wie es bei `JSONResponse` der Fall ist, werden die von Ihnen zurückgegebenen Daten automatisch mit jedem Pydantic-`response_model` (das Sie im *Pfadoperation-Dekorator* deklariert haben) konvertiert (und gefiltert). Aber die...

If you don't declare a response model, FastAPI will use the `jsonable_encoder` explained in [JSON Compatible Encoder](../tutorial/encoder.md) and put it in a `JSONResponse`.

Un « middleware » est une fonction qui agit sur chaque **requête** avant qu’elle ne soit traitée par un *chemin d'accès* spécifique. Et aussi sur chaque **réponse** avant son renvoi.

* Il intercepte chaque **requête** qui parvient à votre application.
* Il peut alors faire quelque chose avec cette **requête** ou exécuter tout code nécessaire.
* Ensuite, il transmet la **requête** pour qu’elle soit traitée par le reste de l’application (par un *chemin d'accès*).

 */
package org.codelibs.fess.suggest.constants;

/**
 * This class contains constants for field names used in the Fess Suggest system.
 * These constants represent various field names that are used throughout the application
 * to ensure consistency and avoid hardcoding strings.
 *
 * <ul>
 * <li>{@link #ID} - The unique identifier field.</li>
 * <li>{@link #TEXT} - The text content field.</li>

     <span style="background-color:#007166"><font color="#D3D7CF"> INFO </font></span>  Waiting for application startup.
     <span style="background-color:#007166"><font color="#D3D7CF"> INFO </font></span>  Application startup complete.
```

</div>

У виводі є рядок приблизно такого змісту:

```hl_lines="4"

        ProcessProbe.getInstance();
        OsProbe.getInstance();
        JvmInfo.jvmInfo();
    }

    /**
     * Main entry point for the crawler application.
     * Parses command-line arguments, initializes the application container,
     * sets up monitoring, and executes the crawling process.
     *
     * @param args command-line arguments as defined in the Options class
     */

FastAPI utilisera ce type de retour pour :

* **Valider** les données renvoyées.

파일과 폼 필드는 폼 데이터로 업로드되며, 파일과 폼 필드를 받게 됩니다.

또한 일부 파일은 `bytes`로, 일부 파일은 `UploadFile`로 선언할 수 있습니다.

/// warning

다수의 `File`과 `Form` 매개변수를 한 *경로 처리*에 선언하는 것이 가능하지만, 요청의 본문이 `application/json`가 아닌 `multipart/form-data`로 인코딩되기 때문에 JSON으로 받기를 기대하는 `Body` 필드를 함께 선언할 수는 없습니다.

이는 **FastAPI**의 한계가 아니라, HTTP 프로토콜의 일부입니다.

///

## 요약 { #recap }

import org.codelibs.fess.mylasta.direction.FessConfig;

/**
 * This class provides system-related utility methods.
 * It extends {@link org.codelibs.core.lang.SystemUtil} and adds
 * methods specific to the Fess application.
 */
public class SystemUtil extends org.codelibs.core.lang.SystemUtil {

    private static final String DEFAULT_SENSITIVE_PATTERN = ".*password.*|.*secret.*|.*key.*|.*token.*|.*credential.*|.*auth.*|.*private.*";

   *
   * https://console.developers.google.com/project
   */
  public static final String GOOGLE_API_KEY = "AIzaSyAx2WZYe0My0i-uGurpvraYJxO7XNbwiGs";
  public static final MediaType MEDIA_TYPE_JSON = MediaType.get("application/json");

  private final OkHttpClient client = new OkHttpClient.Builder()
      .addInterceptor(new GzipRequestInterceptor())
      .build();
  private final Moshi moshi = new Moshi.Builder().build();