<dfn title="仕様">仕様</dfn>では、フィールドの名前が正確に`username`と`password`であることと、JSONではなくフォームフィールドとして送信されることを要求しています。

`Form`では`Body`（および`Query`や`Path`、`Cookie`）と同じ設定を宣言することができます。これには、バリデーション、例、エイリアス（例えば`username`の代わりに`user-name`）などが含まれます。

/// info | 情報

`Form`は`Body`を直接継承するクラスです。

///

/// tip | 豆知識

フォームのボディを宣言するには、明示的に`Form`を使用する必要があります。なぜなら、これを使わないと、パラメータはクエリパラメータやボディ（JSON）パラメータとして解釈されるからです。

///

    public String id;

    /** Search term for filtering related content. */
    public String term;

    /** Content text for filtering related content. */
    public String content;

    /** User who created the related content. */
    public String createdBy;

    /** Creation time of the related content. */
    public String createdTime;

    /** Version number for optimistic locking. */

ight{float:right!important}.float-xl-none{float:none!important}}.user-select-all{-webkit-user-select:all!important;-moz-user-select:all!important;user-select:all!important}.user-select-auto{-webkit-user-select:auto!important;-moz-user-select:auto!important;-ms-user-select:auto!important;user-select:auto!important}.user-select-none{-webkit-user-select:none!important;-moz-user-select:none!important;-ms-user-select:none!important;user-select:none!important}.overflow-auto{overflow:auto!important}.ov...

  // session has been run (this is detected in RecordMutation function). If the
  // string is empty, no mutation has occurred. Otherwise the string is a
  // description of the mutation suitable for returning to the user.
  //
  // Sessions are added to this map in TF_NewSession, and removed in
  // TF_DeleteSession.
  // TF_Graph may only / must be deleted when
  //   sessions.size() == 0 && delete_requested == true
  //

            throws IOException, ServletException {
        final RequestManager requestManager = ComponentUtil.getRequestManager();
        if (!requestManager.findUserBean(FessUserBean.class).map(user -> user.hasRoles(acceptedRoles)).orElse(Boolean.FALSE)) {
            response.sendError(HttpServletResponse.SC_UNAUTHORIZED, "Unauthorized access: " + request.getServletPath());
            return;
        }

        try {

@REM Apache Maven Wrapper startup batch script, version 3.3.4
@REM
@REM Optional ENV vars
@REM   MVNW_REPOURL - repo url base for downloading maven distribution
@REM   MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
@REM   MVNW_VERBOSE - true: enable verbose log; others: silence the output
@REM ----------------------------------------------------------------------------

	processLocksWriteTotalMD          = NewGaugeMD(processLocksWriteTotal, "Number of current WRITE locks on this peer")
	processCPUTotalSecondsMD          = NewCounterMD(processCPUTotalSeconds, "Total user and system CPU time spent in seconds")
	processGoRoutineTotalMD           = NewGaugeMD(processGoRoutineTotal, "Total number of go routines running")

This can be very useful for setting up **resources** that you need to use for the whole app, and that are **shared** among requests, and/or that you need to **clean up** afterwards. For example, a database connection pool, or loading a shared machine learning model.

## Use Case { #use-case }

Let's start with an example **use case** and then see how to solve it with this.

import org.codehaus.plexus.interpolation.PropertiesBasedValueSource;
import org.codehaus.plexus.interpolation.RegexBasedInterpolator;

/**
 * Builds the effective settings from a user settings file and/or a global settings file.
 *
 * @deprecated since 4.0.0, use {@link org.apache.maven.api.services.SettingsBuilder} instead
 */
@Named
@Singleton
@Deprecated(since = "4.0.0")
public class DefaultSettingsBuilder implements SettingsBuilder {

        this.host = host;
    }

    /**
     * Get user's password used to log in to proxy server.
     *
     * @return user's password at proxy host
     */
    public String getPassword() {
        return password;
    }

    /**
     * Set the user's password for the proxy server.
     *
     * @param password password to use to log in to a proxy server
     */
    public void setPassword(String password) {