In this section you will see how.

## The normal process { #the-normal-process }

The normal (default) process, is as follows.

A `FastAPI` application (instance) has an `.openapi()` method that is expected to return the OpenAPI schema.

As part of the application object creation, a *path operation* for `/openapi.json` (or for whatever you set your `openapi_url`) is registered.

/// warning | Atenção

Você pode declarar vários parâmetros `Form` em uma *operação de rota*, mas não pode declarar campos `Body` que espera receber como JSON, pois a requisição terá o corpo codificado usando `application/x-www-form-urlencoded` em vez de `application/json`.

Isso não é uma limitação do **FastAPI**, é parte do protocolo HTTP.

///

## Recapitulando { #recap }

                    "responses": {
                        "200": {
                            "description": "The created item",
                            "content": {
                                "application/json": {
                                    "schema": {"$ref": "#/components/schemas/Item"}
                                }
                            },
                        },
                        "422": {

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

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

    /**
     * Converts a string into <code>application/x-www-form-urlencoded</code>
     * format using the specified encoding scheme.
     *
     * @param s
     *            The string to be converted. Must not be {@literal null} or empty.
     * @param enc
     *            The encoding scheme. Must not be {@literal null} or empty.
     * @return The string encoded in <code>application/x-www-form-urlencoded</code> format.
     */

<div class="termy">

```console
$ hypercorn main:app --worker-class trio
```

</div>

Et cela démarrera Hypercorn avec votre application en utilisant Trio comme backend.

Vous pouvez désormais utiliser Trio en interne dans votre application. Ou mieux encore, vous pouvez utiliser AnyIO pour que votre code reste compatible avec Trio et asyncio. 🎉

## Concepts de déploiement

                "responses": {
                    "200": {
                        "content": {"application/json": {"schema": {}}},
                        "description": "Successful Response",
                    },
                    "422": {
                        "content": {
                            "application/json": {
                                "schema": {

                        "200": {
                            "content": {"application/json": {"schema": {}}},
                            "description": "Successful Response",
                        },
                        "422": {
                            "content": {
                                "application/json": {
                                    "schema": {

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