private static final Logger logger = LogManager.getLogger(TikaExtractor.class);

    /**
     * Tesseract config file path.
     */
    public static final String TIKA_TESSERACT_CONFIG = "tika.tesseract.config";

    /**
     * PDF config file path.
     */
    public static final String TIKA_PDF_CONFIG = "tika.pdf.config";

    /**
     * A parameter key to normalize a text.
     */

   * 8`, so the class files from that build can't express nestmates. Thus, when those class files
   * are used from Java 9 or higher (i.e., high enough to trigger the VarHandle code path), such a
   * lookup would fail with an IllegalAccessException. That may then trigger use of Unsafe (possibly
   * with a warning under recent JVMs), or it may fall back even further to

	switch {
	case usersPrefix:
		accessKey := path.Dir(strings.TrimPrefix(event.keyPath, iamConfigUsersPrefix))
		err = sys.store.UserNotificationHandler(ctx, accessKey, regUser)
	case stsPrefix:
		accessKey := path.Dir(strings.TrimPrefix(event.keyPath, iamConfigSTSPrefix))
		err = sys.store.UserNotificationHandler(ctx, accessKey, stsUser)
	case svcPrefix:

                        false), SESSION_EXPIRED("Session expired", ErrorCategory.AUTHENTICATION, true),

        // File system errors
        FILE_NOT_FOUND("File not found", ErrorCategory.FILE_SYSTEM, false), PATH_NOT_FOUND("Path not found", ErrorCategory.FILE_SYSTEM,
                false), FILE_EXISTS("File already exists", ErrorCategory.FILE_SYSTEM, false), DIRECTORY_NOT_EMPTY("Directory not empty",

首先，要关注的是依赖项。

依赖项就是一个函数，且可以使用与*路径操作函数*相同的参数：

{* ../../docs_src/dependencies/tutorial001.py hl[8:11] *}

大功告成。

只用了**2 行**代码。

依赖项函数的形式和结构与*路径操作函数*一样。

因此，可以把依赖项当作没有「装饰器」（即，没有 `@app.get("/some-path")` ）的路径操作函数。

依赖项可以返回各种内容。

本例中的依赖项预期接收如下参数：

* 类型为 `str` 的可选查询参数 `q`
* 类型为 `int` 的可选查询参数 `skip`，默认值是 `0`
* 类型为 `int` 的可选查询参数 `limit`，默认值是 `100`

然后，依赖项函数返回包含这些值的 `dict`。

### 导入 `Depends`

		name    string
		fv      formValues
		expired bool
		wantErr string
	}

	// Test case just contains fields we override from defaultFormVals.
	testCases := []testCase{
		{
			name:    "happy path no errors",
			fv:      defaultFormVals.Clone(),
			wantErr: "",
		},
		{
			name:    "expired policy document",
			fv:      defaultFormVals.Clone(),
			expired: true,

variables from your model are also going to be untrusted. That means that if
your code interacts with the filesystem, network, etc. and uses checkpointed
variables as part of those interactions (ex: using a string variable to build a
filesystem path), a maliciously created checkpoint might be able to change the
targets of those operations, which could result in arbitrary
read/write/executions.

### Running a TensorFlow server

{* ../../docs_src/request_files/tutorial001_an_py39.py hl[9] *}

/// info | Info

`File` ist eine Klasse, die direkt von `Form` erbt.

Aber erinnern Sie sich, dass, wenn Sie `Query`, `Path`, `File` und andere von `fastapi` importieren, diese tatsächlich Funktionen sind, welche spezielle Klassen zurückgeben.

///

/// tip | Tipp

     * @throws IOException
     */
    @Test
    public void testDoAuthentication() throws IOException {
        // Setup: No "Authorization" header to follow a simple path
        when(mockRequest.getHeader("Authorization")).thenReturn(null);

        // Execute
        NtlmPasswordAuthentication result = ntlmSsp.doAuthentication(mockCifsContext, mockRequest, mockResponse, challenge);

        assertNotNull(info502);
        // Initial state of ShareInfo502 fields
        assertNull(info502.netname);
        assertNull(info502.remark);
        assertNull(info502.path);
        assertNull(info502.password);
        assertNull(info502.security_descriptor);
        assertEquals(0, info502.type);
        assertEquals(0, info502.permissions);
        assertEquals(0, info502.max_uses);