,"0","1223","xhrSupported","cors","errorCallback","open","username","xhrFields","onload","onerror","onabort","ontimeout","onreadystatechange","responseType","responseText","binary","scriptAttrs","charset","scriptCharset","evt","oldCallbacks","rjsonp","jsonp","jsonpCallback","originalSettings","callbackName","overwritten","responseContainer","jsonProp","createHTMLDocument","implementation","keepScripts","parsed","params","animated","offset","setOffset","curPosition","curLeft","curCSSTop","curTop"...

,"0","1223","xhrSupported","cors","errorCallback","open","username","xhrFields","onload","onerror","onabort","ontimeout","onreadystatechange","responseType","responseText","binary","scriptAttrs","charset","scriptCharset","evt","oldCallbacks","rjsonp","jsonp","jsonpCallback","originalSettings","callbackName","overwritten","responseContainer","jsonProp","createHTMLDocument","implementation","keepScripts","parsed","params","animated","offset","setOffset","curPosition","curLeft","curCSSTop","curTop"...

### `JSONResponse`

データを受け取り、 `application/json` としてエンコードされたレスポンスを返します。

上で読んだように、**FastAPI** のデフォルトのレスポンスとして利用されます。

### `ORJSONResponse`

上で読んだように、<a href="https://github.com/ijl/orjson" class="external-link" target="_blank">`orjson`</a>を使った、高速な代替のJSONレスポンスです。

### `UJSONResponse`

<a href="https://github.com/ultrajson/ultrajson" class="external-link" target="_blank">`ujson`</a>を使った、代替のJSONレスポンスです。

/// warning | "注意"

try:
    import ujson
except ImportError:  # pragma: nocover
    ujson = None  # type: ignore


try:
    import orjson
except ImportError:  # pragma: nocover
    orjson = None  # type: ignore


class UJSONResponse(JSONResponse):
    """
    JSON response using the high-performance ujson library to serialize data to JSON.

    Read more about it in the

* <a href="https://github.com/ijl/orjson" target="_blank"><code>orjson</code></a> - Необхідно, якщо Ви хочете використовувати `ORJSONResponse`.
* <a href="https://github.com/esnme/ultrajson" target="_blank"><code>ujson</code></a> - Необхідно, якщо Ви хочете використовувати `UJSONResponse`.

Ви можете встановити все це за допомогою `pip install fastapi[all]`.

* <a href="https://www.uvicorn.org" target="_blank"><code>uvicorn</code></a> - Server để chạy ứng dụng của bạn.
* <a href="https://github.com/ijl/orjson" target="_blank"><code>orjson</code></a> - Bắt buộc nếu bạn muốn sử dụng `ORJSONResponse`.
* <a href="https://github.com/esnme/ultrajson" target="_blank"><code>ujson</code></a> - Bắt buộc nếu bạn muốn sử dụng `UJSONResponse`.

Bạn có thể cài đặt tất cả những dependency trên với `pip install "fastapi[all]"`.

    * 因为 `q` 被声明为 `= None`，所以它是可选的。
    * 如果没有 `None` 它将会是必需的 (如 `PUT` 例子中的请求体)。
* 对于访问 `/items/{item_id}` 的 `PUT` 请求，将请求体读取为 JSON 并：
    * 检查是否有必需属性 `name` 并且值为 `str` 类型 。
    * 检查是否有必需属性 `price` 并且值为 `float` 类型。
    * 检查是否有可选属性 `is_offer`， 如果有的话值应该为 `bool` 类型。
    * 以上过程对于多层嵌套的 JSON 对象同样也会执行
* 自动对 JSON 进行转换或转换成 JSON。
* 通过 OpenAPI 文档来记录所有内容，可被用于：
    * 交互式文档系统
    * 许多编程语言的客户端代码自动生成系统
* 直接提供 2 种交互式文档 web 界面。

---

Por exemplo, vamos supor que você queira utilizar o <a href="https://github.com/ijl/orjson" class="external-link" target="_blank">`orjson`</a>, mas com algumas configurações personalizadas que não estão incluídas na classe `ORJSONResponse`.

Vamos supor também que você queira retornar um JSON indentado e formatado, então você quer utilizar a opção `orjson.OPT_INDENT_2` do orjson.

Takes some data and returns an `application/json` encoded response.

This is the default response used in **FastAPI**, as you read above.

### `ORJSONResponse`

A fast alternative JSON response using <a href="https://github.com/ijl/orjson" class="external-link" target="_blank">`orjson`</a>, as you read above.

/// info

This requires installing `orjson` for example with `pip install orjson`.

///

### `UJSONResponse`

Nehmen wir zum Beispiel an, dass Sie <a href="https://github.com/ijl/orjson" class="external-link" target="_blank">`orjson`</a> verwenden möchten, aber mit einigen benutzerdefinierten Einstellungen, die in der enthaltenen `ORJSONResponse`-Klasse nicht verwendet werden.

Sie möchten etwa, dass Ihre Response eingerücktes und formatiertes JSON zurückgibt. Dafür möchten Sie die orjson-Option `orjson.OPT_INDENT_2` verwenden.