<img src="/img/tutorial/security/image12.png">

## 檢查使用者名稱 { #check-the-username }

以下是一個更完整的範例。

使用一個依賴來檢查使用者名稱與密碼是否正確。

為此，使用 Python 標準模組 [`secrets`](https://docs.python.org/3/library/secrets.html) 來比對使用者名稱與密碼。

`secrets.compare_digest()` 需要接收 `bytes`，或是只包含 ASCII 字元（英文字符）的 `str`。這表示它無法處理像 `á` 這樣的字元，例如 `Sebastián`。

為了處理這點，我們會先將 `username` 與 `password` 以 UTF-8 編碼成 `bytes`。

 * using either of these classes, please contact the Java libraries team for advice.
 *
 * <p>Popular escapers are defined as constants in classes like {@link
 * com.google.common.html.HtmlEscapers} and {@link com.google.common.xml.XmlEscapers}. To create
 * your own escapers, use {@link CharEscaperBuilder}, or extend {@code CharEscaper} or {@code
 * UnicodeEscaper}.
 *
 * @author David Beaumont

///

## Use cases { #use-cases }

Some use cases include:

* Converting non-JSON request bodies to JSON (e.g. [`msgpack`](https://msgpack.org/index.html)).
* Decompressing gzip-compressed request bodies.
* Automatically logging all request bodies.

## Handling custom request body encodings { #handling-custom-request-body-encodings }

     * @param filter the LDAP search filter to escape (null is treated as empty string)
     * @return the escaped filter string safe for use in LDAP queries (empty string if filter is null)
     * @see <a href="https://tools.ietf.org/html/rfc4515">RFC 4515 - LDAP String Representation of Search Filters</a>
     * @deprecated Use {@link LdapUtil#escapeValue(String)} instead
     */
    @Deprecated

          <links>
            <link>https://docs.oracle.com/en/java/javase/25/docs/api/</link>
            <link>https://jspecify.dev/docs/api/</link>
          </links>
          <overview>../../overview.html</overview>
        </configuration>
      </plugin>
      <plugin>
        <artifactId>maven-resources-plugin</artifactId>
        <executions>
          <execution>
            <id>gradle-module-metadata</id>

///

O parâmetro `status_code` recebe um número com o código de status HTTP.

/// info | Informação

`status_code` também pode receber um `IntEnum`, como [`http.HTTPStatus`](https://docs.python.org/3/library/http.html#http.HTTPStatus) do Python.

///

Dessa forma:

* Este código de status será retornado na resposta.
* Será documentado como tal no esquema OpenAPI (e, portanto, nas interfaces do usuário):

///

## Anwendungsfälle { #use-cases }

Einige Anwendungsfälle sind:

* Konvertieren von Nicht-JSON-Requestbodys nach JSON (z. B. [`msgpack`](https://msgpack.org/index.html)).
* Dekomprimierung gzip-komprimierter Requestbodys.
* Automatisches Loggen aller Requestbodys.

## Handhaben von benutzerdefinierten Requestbody-Kodierungen { #handling-custom-request-body-encodings }

		sessionName := conf.AWSRoleSessionName
		if sessionName == "" {
			// RoleSessionName has a limited set of characters (https://docs.aws.amazon.com/STS/latest/APIReference/API_AssumeRole.html)
			sessionName = "minio-tier-" + mustGetUUID()
		}
		s3WebIdentityIAM := credentials.IAM{
			Client: &http.Client{
				Transport: NewHTTPTransport(),
			},
			EKSIdentity: struct {

   */
  public double sampleCovariance() {
    checkState(count() > 1);
    return sumOfProductsOfDeltas / (count() - 1);
  }

  /**
   * Returns the <a href="http://mathworld.wolfram.com/CorrelationCoefficient.html">Pearson's or
   * product-moment correlation coefficient</a> of the values. The count must greater than one, and
   * the {@code x} and {@code y} values must both have non-zero population variance (i.e. {@code

func (r *Reader) SetExpectedMax(expectedMax int64) {
	r.expectedMax = expectedMax
}

// AddChecksum will add checksum checks as specified in
// https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html
// Returns ErrInvalidChecksum if a problem with the checksum is found.
func (r *Reader) AddChecksum(req *http.Request, ignoreValue bool) error {
	cs, err := GetContentChecksum(req.Header)
	if err != nil {