public DynamicProperties(final String path) {
        this(path == null ? null : new File(path));
    }

    public DynamicProperties(final Path path) {
        this(path == null ? null : path.toFile());
    }

    public DynamicProperties(final File file) {
        // check path
        if (file == null) {
            throw new FileAccessException("ECL0108");
        }

        this.propertiesFile = file;

     * @return ルートパッケージの上位となるベースディレクトリ
     */
    protected static File getBaseDir(final URL url, final String baseName) {
        assertArgumentNotNull("url", url);

        File file = URLUtil.toFile(url);
        final String[] paths = StringUtil.split(baseName, "/");
        for (final String path : paths) {
            file = file.getParentFile();
        }
        return file;
    }

    /**

Vous pourriez aussi l'utiliser pour générer du code automatiquement, pour les clients qui communiquent avec votre API. Comme par exemple, des applications frontend, mobiles ou IOT.

## Récapitulatif, étape par étape

### Étape 1 : import `FastAPI`

```Python hl_lines="1"
{!../../docs_src/first_steps/tutorial001.py!}
```

    /**
     * URLが示すJarファイルの{@link File}オブジェクトを返します。
     *
     * @param fileUrl
     *            JarファイルのURL。{@literal null}であってはいけません
     * @return Jarファイルの{@link File}
     */
    public static File toFile(final URL fileUrl) {
        assertArgumentNotNull("fileUrl", fileUrl);

        try {
            final String path = URLDecoder.decode(fileUrl.getPath(), "UTF-8");
            return new File(path).getAbsoluteFile();

        assertArgumentNotEmpty("encoding", encoding);

        final URL url = ResourceUtil.getResource(path);
        if (url.getProtocol().equals("file")) {
            return readText(URLUtil.toFile(url), encoding);
        }
        final InputStream is = URLUtil.openStream(url);
        try {
            final Reader reader = ReaderUtil.create(new BufferedInputStream(is, DEFAULT_BUF_SIZE), encoding);

        byte[] krbToken = negInit.getMechanismToken();


        Path p = Files.createTempFile("fakeserver", ".keytab");
        try {
            Files.write(p, keyTab);
            KeyTab kt = KeyTab.getInstance(p.toFile());
            KerberosKey[] keys = kt.getKeys(new KerberosPrincipal("cifs/******@****.***FIELD", KerberosPrincipal.KRB_NT_PRINCIPAL));

   *     names in a loop until {@code mkdir()} returns {@code true}.) For JRE users, prefer {@link
   *     java.nio.file.Files#createTempDirectory}, transforming it to a {@link File} using {@link
   *     java.nio.file.Path#toFile() toFile()} if needed. To restrict permissions as this method
   *     does, pass {@code
   *     PosixFilePermissions.asFileAttribute(PosixFilePermissions.fromString("rwx------"))} to your
   *     call to {@code createTempDirectory}.

        fileList = systemHelper.refreshDesignJspFiles();
        assertEquals(1, fileList.size());
        assertEquals("ok", FileUtil.readText(fileList.get(0).toFile()));
    }

    public void test_updateSystemProperties() {
        final SystemHelper helper = new SystemHelper();
        final AtomicReference<String> appValue = new AtomicReference<>(StringUtil.EMPTY);

Kurz bevor ich mich entschied, **FastAPI** zu erstellen, fand ich den **APIStar**-Server. Er hatte fast alles, was ich suchte, und ein tolles Design.

   *     names in a loop until {@code mkdir()} returns {@code true}.) For JRE users, prefer {@link
   *     java.nio.file.Files#createTempDirectory}, transforming it to a {@link File} using {@link
   *     java.nio.file.Path#toFile() toFile()} if needed. To restrict permissions as this method
   *     does, pass {@code
   *     PosixFilePermissions.asFileAttribute(PosixFilePermissions.fromString("rwx------"))} to your
   *     call to {@code createTempDirectory}.