# Einfaches OAuth2 mit Password und Bearer { #simple-oauth2-with-password-and-bearer }

Lassen Sie uns nun auf dem vorherigen Kapitel aufbauen und die fehlenden Teile hinzufügen, um einen vollständigen Sicherheits-Flow zu erhalten.

## `username` und `password` entgegennehmen { #get-the-username-and-password }

Wir werden **FastAPIs** Sicherheits-Werkzeuge verwenden, um den `username` und das `password` entgegenzunehmen.

        final CmdLineParser parser = new CmdLineParser(options);
        try {
            parser.parseArgument(args);
        } catch (final CmdLineException e) {
            System.err.println(e.getMessage());
            System.err.println("java " + SuggestCreator.class.getCanonicalName() + " [options...] arguments...");
            parser.printUsage(System.err);
            return;
        }

    assertThat(parse("http:\\/host/path"))
      .isEqualTo(parse("http://host/path"))
    assertThat(parse("http:/\\host/path"))
      .isEqualTo(parse("http://host/path"))
    assertThat(parse("http:\\\\host/path"))
      .isEqualTo(parse("http://host/path"))
    assertThat(parse("http:///host/path"))
      .isEqualTo(parse("http://host/path"))
    assertThat(parse("http:\\//host/path"))
      .isEqualTo(parse("http://host/path"))

        super("ECL0050", asArray(cause), cause);
    }

    /**
     * Creates a {@link ParseRuntimeException}.
     *
     * @param s the string that could not be parsed
     */
    public ParseRuntimeException(final String s) {
        super("ECL0051", asArray(s));
    }

import org.apache.maven.api.annotations.Nonnull;

/**
 * A version or meta-version of an artifact or a dependency.
 * A meta-version is a version suffixed with the {@code SNAPSHOT} keyword.
 * Versions are usually parsed using the {@link org.apache.maven.api.services.VersionParser} service.
 *
 * @since 4.0.0
 * @see org.apache.maven.api.services.VersionParser#parseVersion(String)
 * @see org.apache.maven.api.Session#parseVersion(String)

        if (StringUtil.isNotBlank(roleName)) {
            roleNameList.add(roleName);
        }
    }

    /**
     * Parses the role set from a string.
     * @param value The string to parse.
     * @param encrypted Whether the string is encrypted.
     * @param roleSet The set of roles.
     */

 The jar file is executable and provides a little tool to display how Maven parses and compares versions:

+----+
$ java -jar maven-artifact-*.jar 3.2.4-alpha-1 3.2.4-SNAPSHOT 3.2.4.0
Display parameters as parsed by Maven (in canonical form) and comparison result:
1. 3.2.4-alpha-1 == 3.2.4.alpha.1
   3.2.4-alpha-1 < 3.2.4-SNAPSHOT
2. 3.2.4-SNAPSHOT == 3.2.4.snapshot

     * @return The toolchains model or <code>null</code> if no toolchain file was configured or the configured file does
     *         not exist.
     * @throws MisconfiguredToolchainException If the toolchain file exists but cannot be parsed.
     */
    PersistedToolchains build(File userToolchainsFile) throws MisconfiguredToolchainException;

)

// TransitionDate is a embedded type containing time.Time to unmarshal
// Date in Transition
type TransitionDate struct {
	time.Time
}

// UnmarshalXML parses date from Transition and validates date format
func (tDate *TransitionDate) UnmarshalXML(d *xml.Decoder, startElement xml.StartElement) error {
	var dateStr string
	err := d.DecodeElement(&dateStr, &startElement)
	if err != nil {

 *
 * <p>Methods in this class may throw SuggesterException in case of failures during the parsing process.</p>
 *
 * <p>Usage example:</p>
 * <pre>
 * {@code
 * DefaultContentsParser parser = new DefaultContentsParser();
 * SuggestItem item = parser.parseSearchWords(words, readings, fields, tags, roles, score, readingConverter, normalizer, analyzer, langs);
 * }
 * </pre>
 *
 * @see ContentsParser
 * @see SuggestItem