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 * Copyright 2012-2025 CodeLibs Project and the Others.
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 * you may not use this file except in compliance with the License.
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regarding copyright ownership.  The ASF licenses this file
to you under the Apache License, Version 2.0 (the
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Unless required by applicable law or agreed to in writing,

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regarding copyright ownership.  The ASF licenses this file
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Base64 pode codificar dados binários em strings, mas, para isso, precisa usar mais caracteres do que os dados binários originais; assim, normalmente é menos eficiente do que arquivos comuns.

Use base64 apenas se realmente precisar incluir dados binários em JSON e não puder usar arquivos para isso.

## Pydantic `bytes` { #pydantic-bytes }

# 回應 Cookie { #response-cookies }

## 使用 `Response` 參數 { #use-a-response-parameter }

你可以在路徑操作函式（path operation function）中宣告一個型別為 `Response` 的參數。

接著你可以在那個「暫時」的 `Response` 物件上設定 Cookie。

{* ../../docs_src/response_cookies/tutorial002_py310.py hl[1, 8:9] *}

之後如常回傳你需要的任何物件（例如 `dict`、資料庫模型等）。

如果你宣告了 `response_model`，它仍會用來過濾並轉換你回傳的物件。

FastAPI 會使用那個暫時的 `Response` 取出 Cookie（以及標頭與狀態碼），並將它們放入最終回應；最終回應包含你回傳的值，且會套用任何 `response_model` 的過濾。