Vous pouvez aussi retourner des models **Pydantic** (qui seront détaillés plus tard).

Il y a de nombreux autres objets et modèles qui seront automatiquement convertis en JSON. Essayez d'utiliser vos favoris, il est fort probable qu'ils soient déjà supportés.

## Récapitulatif

* Importez `FastAPI`.
* Créez une instance d'`app`.
* Ajoutez une **décorateur d'opération de chemin** (tel que `@app.get("/")`).

Você já pode experimentar na documentação interativa:

<img src="/img/tutorial/security/image03.png">

Não estamos verificando a validade do token ainda, mas isso já é um começo

## Recapitulando

        rollback();
    }

    // ===================================================================================
    //                                                                           Form File
    //                                                                           =========
    protected static class ActionMultipartFormFile implements MultipartFormFile, Serializable {

Diese Schemadefinition enthält Ihre API-Pfade, die möglichen Parameter, welche diese entgegennehmen, usw.

#### Daten-„Schema“

Der Begriff „Schema“ kann sich auch auf die Form von Daten beziehen, wie z. B. einen JSON-Inhalt.

In diesem Fall sind die JSON-Attribute und deren Datentypen, usw. gemeint.

#### OpenAPI und JSON Schema

            if (!visited.add(a.getGroupId() + ':' + a.getArtifactId() + ':' + a.getBaseVersion())) {
                RepositoryException exception =
                        new RepositoryException("Artifact relocations form a cycle: " + visited);
                invalidDescriptor(session, trace, a, exception);
                if ((getPolicy(session, a, request) & ArtifactDescriptorPolicy.IGNORE_INVALID) != 0) {
                    return null;

// and its documentation for NON-COMMERCIAL or COMMERCIAL purposes and
// without fee is hereby granted, provided that this copyright notice is kept
// intact.
//
// WIDGET WORKSHOP MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY
// OF THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
// TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A

// In case of SSE-S3, the ETag of an object is computed the same as
// for single resp. multipart plaintext objects. In particular,
// the ETag of a singlepart SSE-S3 object is its content MD5.
//
// In case of SSE-C and SSE-KMS, the ETag of an object is computed
// differently. For singlepart uploads the ETag is not the content
// MD5 of the object. For multipart uploads the ETag is also not

    FIRST,
    SECOND,
    THIRD;
  }

  // Given a sequence of lock acquisition descriptions
  // (e.g. "LockA -> LockB", "LockB -> LockC", ...)
  // Checks that the exception.getMessage() matches a regex of the form:
  // "LockA -> LockB \b.*\b LockB -> LockC \b.*\b LockC -> LockA"
  private void checkMessage(IllegalStateException exception, String... expectedLockCycle) {
    String regex = Joiner.on("\\b.*\\b").join(expectedLockCycle);

   |       repositories, plugin repositories, and free-form properties to be used as configuration
   |       variables for plugins in the POM.
   |
   |-->
  <profiles>
    <!-- profile
     | Specifies a set of introductions to the build process, to be activated using one or more of the
     | mechanisms described above. For inheritance purposes, and to activate profiles via <activatedProfiles/>

    FIRST,
    SECOND,
    THIRD;
  }

  // Given a sequence of lock acquisition descriptions
  // (e.g. "LockA -> LockB", "LockB -> LockC", ...)
  // Checks that the exception.getMessage() matches a regex of the form:
  // "LockA -> LockB \b.*\b LockB -> LockC \b.*\b LockC -> LockA"
  private void checkMessage(IllegalStateException exception, String... expectedLockCycle) {
    String regex = Joiner.on("\\b.*\\b").join(expectedLockCycle);