///

/// warning | 注意

*path operation*で複数の`Form`パラメータを宣言することができますが、JSONとして受け取ることを期待している`Body`フィールドを宣言することはできません。なぜなら、リクエストは`application/json`の代わりに`application/x-www-form-urlencoded`を使ってボディをエンコードするからです。

これは **FastAPI**の制限ではなく、HTTPプロトコルの一部です。

///

## まとめ

# Déploiement

Le déploiement d'une application **FastAPI** est relativement simple.

## Que signifie le déploiement

**Déployer** une application signifie effectuer les étapes nécessaires pour la rendre **disponible pour les
utilisateurs**.

Pour une **API Web**, cela implique normalement de la placer sur une **machine distante**, avec un **programme serveur**

    /** The version of the Fess application. */
    protected String version;

    /** The major version number. */
    protected int majorVersion;

    /** The minor version number. */
    protected int minorVersion;

    /** The product version string. */
    protected String productVersion;

    /** The end-of-life timestamp for the application. */
    protected long eolTime;

                            "content": {
                                "application/json": {
                                    "schema": {},
                                }
                            },
                        },
                        "422": {
                            "content": {
                                "application/json": {
                                    "schema": {

Vous pouvez connecter le <abbr title="En anglais: debugger">débogueur</abbr> dans votre éditeur, par exemple avec Visual Studio Code ou PyCharm.

## Faites appel à `uvicorn`

Dans votre application FastAPI, importez et exécutez directement `uvicorn` :

{* ../../docs_src/debugging/tutorial001.py hl[1,15] *}

### À propos de `__name__ == "__main__"`

                                "content": {"application/json": {"schema": {}}},
                            },
                            "422": {
                                "description": "Validation Error",
                                "content": {
                                    "application/json": {
                                        "schema": {

                                "content": {"application/json": {"schema": {}}},
                            },
                            "422": {
                                "description": "Validation Error",
                                "content": {
                                    "application/json": {
                                        "schema": {

                    "responses": {
                        "404": {
                            "description": "The item was not found",
                            "content": {
                                "application/json": {
                                    "schema": {"$ref": "#/components/schemas/Message"}
                                }
                            },
                        },
                        "200": {

                            "content": {
                                "application/json": {"schema": {}},
                            },
                            "description": "Successful Response",
                        },
                        "422": {
                            "content": {
                                "application/json": {
                                    "schema": {

# Security - First Steps { #security-first-steps }

Let's imagine that you have your **backend** API in some domain.

And you have a **frontend** in another domain or in a different path of the same domain (or in a mobile application).

And you want to have a way for the frontend to authenticate with the backend, using a **username** and **password**.

We can use **OAuth2** to build that with **FastAPI**.