* Reads text from a file using the default encoding.
     *
     * @param file
     *            The file. Must not be {@literal null}.
     * @return The text read from the file.
     */
    public static String readText(final File file) {
        assertArgumentNotNull("file", file);
        return readText(file, Charset.defaultCharset().name());
    }

    /**
     * Reads text from a file with the specified encoding.

	if isClosed {
		t.Fatal("File ref count shouldn't be zero")
	}

	// Decrease reference count by 1.
	if err = rlk.Close(); err != nil {
		t.Fatal(err)
	}

	// Now file should be closed.
	isClosed = rlk.IsClosed()
	if !isClosed {
		t.Fatal("File ref count should be zero")
	}

	// Closing a file again should result in invalid argument.
	if err = rlk.Close(); err != os.ErrInvalid {

    /** Service for file authentication operations. */
    @Resource
    private FileAuthenticationService fileAuthenticationService;

    /** Pager for file authentication list pagination. */
    @Resource
    private FileAuthPager fileAuthenticationPager;

    /** Service for file configuration operations. */
    @Resource
    protected FileConfigService fileConfigService;

    public static final File DEFAULT_USER_SETTINGS_FILE = new File(userMavenConfigurationHome, "settings.xml");

    private File settings;

    public RuntimeInfo() {
        this.settings = DEFAULT_USER_SETTINGS_FILE;
    }

    public RuntimeInfo(File settings) {
        this.settings = settings;
    }

    public File getFile() {
        return settings;
    }

        file("/build/restResources/yamlSpecs/rest-api-spec/api/" + apiCore1).exists()
        file("/build/restResources/yamlSpecs/rest-api-spec/api/" + apiCore2).exists()
        file("/build/restResources/yamlSpecs/rest-api-spec/api/" + apiXpack).exists()
        file("/build/restResources/yamlTests/rest-api-spec/test/" + coreTest).exists()

		n := 1
		var base, ext string
		base = *privKeyPath
		if idx := strings.LastIndexByte(base, '.'); idx != -1 {
			ext = base[idx:]
			base = base[:idx]
		}
		for {
			// Automatically read "file.ext", "file-2.ext", "file-3.ext"...
			fn := base + ext
			if n > 1 {
				fn = fmt.Sprintf("%s-%d%s", base, n, ext)
			}

			if b, err := os.ReadFile(fn); err == nil {
				privateKeys = append(privateKeys, b)

    @Test
    void testScmInfoCalculatedCorrectlyOnParentAndChildRead() throws Exception {
        File localRepo = getLocalRepositoryPath();

        File pom0 = new File(localRepo, "p0/pom.xml");
        File pom0Basedir = pom0.getParentFile();
        File pom1 = new File(pom0Basedir, "modules/p1/pom.xml");

        // load the child project, which inherits from p0...

            assertEquals(flagValue, SMBUtil.readInt2(buffer, 2));
        }
    }

    @Test
    @DisplayName("Test createResponse with different file IDs and file names")
    void testCreateResponseVariations() {
        // Test with null file ID
        Smb2CloseRequest nullIdRequest = new Smb2CloseRequest(mockConfig, null, testFileName);

```

Das liegt daran, dass hochgeladene Dateien als „Formulardaten“ gesendet werden.

///

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

Importieren Sie `File` und `UploadFile` von `fastapi`:

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

## `File`-Parameter definieren { #define-file-parameters }

Erstellen Sie Datei-Parameter, so wie Sie es auch mit `Body` und `Form` machen würden:

/// info | Información

Para recibir archivos subidos y/o form data, primero instala [`python-multipart`](https://github.com/Kludex/python-multipart).

Asegúrate de crear un [entorno virtual](../virtual-environments.md), actívalo y luego instálalo, por ejemplo:

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

///

## Importa `File` y `Form` { #import-file-and-form }