*
   * @since 14.0
   */
  public static ByteSource asByteSource(File file) {
    return new FileByteSource(file);
  }

  private static final class FileByteSource extends
      ByteSource
  {

    private final File file;

    private FileByteSource(File file) {
      this.file = checkNotNull(file);
    }

    @Override

///

## Import `File` { #import-file }

Import `File` and `UploadFile` from `fastapi`:

{* ../../docs_src/request_files/tutorial001_an_py310.py hl[3] *}

## Define `File` Parameters { #define-file-parameters }

Create file parameters the same way you would for `Body` or `Form`:

{* ../../docs_src/request_files/tutorial001_an_py310.py hl[9] *}

/// info

`File` is a class that inherits directly from `Form`.

# 폼 및 파일 요청 { #request-forms-and-files }

`File` 과 `Form` 을 사용하여 파일과 폼 필드를 동시에 정의할 수 있습니다.

/// info

업로드된 파일 및/또는 폼 데이터를 받으려면 먼저 [`python-multipart`](https://github.com/Kludex/python-multipart)를 설치해야 합니다.

[가상 환경](../virtual-environments.md)을 생성하고, 활성화한 다음 설치해야 합니다. 예:

```console
$ pip install python-multipart
```

///

## `File` 및 `Form` 임포트 { #import-file-and-form }

## Import `File` and `Form` { #import-file-and-form }

{* ../../docs_src/request_forms_and_files/tutorial001_an_py310.py hl[3] *}

## Define `File` and `Form` parameters { #define-file-and-form-parameters }

Create file and form parameters the same way you would for `Body` or `Query`:

{* ../../docs_src/request_forms_and_files/tutorial001_an_py310.py hl[10:12] *}

# 请求表单与文件 { #request-forms-and-files }

FastAPI 支持同时使用 `File` 和 `Form` 定义文件和表单字段。

/// info | 信息

接收上传的文件和/或表单数据，首先安装 [`python-multipart`](https://github.com/Kludex/python-multipart)。

请先创建并激活一个[虚拟环境](../virtual-environments.md)，然后再安装，例如：

```console
$ pip install python-multipart
```

///

## 导入 `File` 与 `Form` { #import-file-and-form }

{* ../../docs_src/request_forms_and_files/tutorial001_an_py310.py hl[3] *}

你可以使用 `File` 與 `Form` 同時定義檔案與表單欄位。

/// info

要接收上傳的檔案與/或表單資料，請先安裝 [`python-multipart`](https://github.com/Kludex/python-multipart)。

請先建立並啟用一個 [虛擬環境](../virtual-environments.md)，然後再安裝，例如：

```console
$ pip install python-multipart
```

///

## 匯入 `File` 與 `Form` { #import-file-and-form }

{* ../../docs_src/request_forms_and_files/tutorial001_an_py310.py hl[3] *}

# リクエストフォームとファイル { #request-forms-and-files }

`File`と`Form`を同時に使うことでファイルとフォームフィールドを定義することができます。

/// info | 情報

アップロードされたファイルやフォームデータを受信するには、まず[`python-multipart`](https://github.com/Kludex/python-multipart)をインストールします。

[仮想環境](../virtual-environments.md)を作成し、それを有効化してから、例えば次のようにインストールしてください:

```console
$ pip install python-multipart
```

///

## `File`と`Form`のインポート { #import-file-and-form }

        this.data = data.clone();
        this.file = null;
    }

    /**
     * Constructs a ContentCache with the given file.
     *
     * @param file the file containing the content
     * @throws IllegalArgumentException if file is null
     */
    public ContentCache(final File file) {
        if (file == null) {
            throw new IllegalArgumentException("file must not be null");
        }

                final File file = super.getFile();
                if (file != null) {
                    try {
                        Files.deleteIfExists(file.toPath());
                    } catch (final IOException e) {
                        // Log the error but don't throw to avoid masking exceptions from the main operation

    /**
     * Stores or updates a dictionary file in the ConfigSync storage.
     * This method checks for concurrent modifications by comparing timestamps
     * and uploads the file content to the ConfigSync API.
     *
     * @param dictFile the dictionary file metadata to store
     * @param file the actual file containing the dictionary content
     * @throws DictionaryException if the file was updated by another process,